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Get Error Details

get-error-details
Read-onlyIdempotent

Fetch temporary local diagnostic details for an unexpected tool or resource-read failure using the correlation ID returned with the failed call.

Instructions

Returns temporary local diagnostic details for an unexpected tool or resource-read failure. The result may contain paths and user-authored identifiers, is intended only for the trusted local agent, and must never be submitted externally.

Input Schema

NameRequiredDescriptionDefault
correlationIdYesCorrelation identifier returned with the failed tool invocation.

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed1 schema field changedv1.0.5
    • changedOutput schema / oneOf
      Previous value: -[
      -  {
      -    "properties": {
      -      "data": {
      -        "description": "Tool-specific result payload.",
      -        "properties": {
      -          "error": {
      -            "description": "Captured diagnostic record for the failed tool invocation.",
      -            "properties": {
      -              "cancellationRequested": {
      -                "description": "Whether cancellation had been requested when the failure occurred.",
      -                "type": "boolean"
      -              },
      -              "correlationId": {
      -                "description": "Correlation identifier assigned to the captured failure.",
      -                "format": "uuid",
      -                "type": "string"
      -              },
      -              "dotNetVersion": {
      -                "description": ".NET runtime version used by the server.",
      -                "type": "string"
      -              },
      -              "durationMilliseconds": {
      -                "description": "Tool execution duration in milliseconds before failure.",
      -                "type": "integer"
      -              },
      -              "exceptions": {
      -                "description": "Captured exception chain for the failure.",
      -                "items": {
      -                  "properties": {
      -                    "component": {
      -                      "description": "Roslyn Workbench component in which the exception originated.",
      -                      "enum": [
      -                        "Unknown",
      -                        "RoslynWorkbench",
      -                        "Roslyn",
      -                        "DotNet"
      -                      ],
      -                      "type": "string"
      -                    },
      -                    "message": {
      -                      "description": "Exception message included with the user's consent.",
      -                      "type": "string"
      -                    },
      -                    "stackFrames": {
      -                      "description": "Diagnostic stack frames retained from the exception and classified by owning component.",
      -                      "items": {
      -                        "properties": {
      -                          "assembly": {
      -                            "description": "Assembly name, when available.",
      -                            "type": [
      -                              "string",
      -                              "null"
      -                            ]
      -                          },
      -                          "component": {
      -                            "description": "Roslyn Workbench component that owns this frame.",
      -                            "enum": [
      -                              "Unknown",
      -                              "RoslynWorkbench",
      -                              "Roslyn",
      -                              "DotNet"
      -                            ],
      -                            "type": "string"
      -                          },
      -                          "file": {
      -                            "description": "First-party source file path recorded by symbols, when available.",
      -                            "type": [
      -                              "string",
      -                              "null"
      -                            ]
      -                          },
      -                          "line": {
      -                            "description": "One-based source line number, when available.",
      -                            "type": [
      -                              "integer",
      -                              "null"
      -                            ]
      -                          },
      -                          "method": {
      -                            "description": "Method name, when available.",
      -                            "type": [
      -                              "string",
      -                              "null"
      -                            ]
      -                          },
      -                          "type": {
      -                            "description": "Declaring type name, when available.",
      -                            "type": [
      -                              "string",
      -                              "null"
      -                            ]
      -                          }
      -                        },
      -                        "type": "object"
      -                      },
      -                      "type": "array"
      -                    },
      -                    "type": {
      -                      "description": "Exception type name.",
      -                      "type": "string"
      -                    }
      -                  },
      -                  "required": [
      -                    "type",
      -                    "message"
      -                  ],
      -                  "type": "object"
      -                },
      -                "type": "array"
      -              },
      -              "executionFamily": {
      -                "description": "Execution path used by the failed tool, such as server, plugin, or Code Action.",
      -                "type": "string"
      -              },
      -              "expiresAt": {
      -                "description": "Time at which this locally retained error record expires.",
      -                "format": "date-time",
      -                "type": "string"
      -              },
      -              "failureTime": {
      -                "description": "Time at which the tool invocation failed.",
      -                "format": "date-time",
      -                "type": "string"
      -              },
      -              "operatingSystem": {
      -                "description": "Operating system on which the server was running.",
      -                "type": "string"
      -              },
      -              "pluginClassification": {
      -                "description": "Plugin ownership classification when the failed tool was plugin-backed.",
      -                "type": "string"
      -              },
      -              "processorArchitecture": {
      -                "description": "Processor architecture of the server process.",
      -                "type": "string"
      -              },
      -              "roslynVersion": {
      -                "description": "Roslyn version used by the server.",
      -                "type": "string"
      -              },
      -              "serverVersion": {
      -                "description": "Roslyn Workbench server version that captured the failure.",
      -                "type": "string"
      -              },
      -              "toolName": {
      -                "description": "MCP tool that failed.",
      -                "type": "string"
      -              },
      -              "workspace": {
      -                "description": "Workspace context active during the failure, when available.",
      -                "properties": {
      -                  "documentCount": {
      -                    "description": "Number of loaded documents at the time of failure.",
      -                    "type": "integer"
      -                  },
      -                  "lifecycleState": {
      -                    "description": "Workspace lifecycle state at the time of failure.",
      -                    "type": [
      -                      "string",
      -                      "null"
      -                    ]
      -                  },
      -                  "projectCount": {
      -                    "description": "Number of loaded projects at the time of failure.",
      -                    "type": "integer"
      -                  },
      -                  "transactionRevision": {
      -                    "description": "Active transaction revision at the time of failure, when applicable.",
      -                    "type": [
      -                      "integer",
      -                      "null"
      -                    ]
      -                  },
      -                  "workspaceEpoch": {
      -                    "description": "Workspace epoch active during the failure.",
      -                    "type": "integer"
      -                  },
      -                  "workspaceId": {
      -                    "description": "Server-generated identifier of the workspace active during the failure.",
      -                    "format": "uuid",
      -                    "type": "string"
      -                  }
      -                },
      -                "type": [
      -                  "object",
      -                  "null"
      -                ]
      -              }
      -            },
      -            "required": [
      -              "correlationId",
      -              "failureTime",
      -              "expiresAt",
      -              "toolName",
      -              "executionFamily",
      -              "pluginClassification",
      -              "durationMilliseconds",
      -              "serverVersion",
      -              "roslynVersion",
      -              "dotNetVersion",
      -              "operatingSystem",
      -              "processorArchitecture"
      -            ],
      -            "type": "object"
      -          },
      -          "safeForExternalSubmission": {
      -            "description": "Whether the captured details are safe to submit outside the local process.",
      -            "type": "boolean"
      -          },
      -          "sensitivity": {
      -            "description": "Sensitivity classification applied to the captured error details.",
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "error"
      -        ],
      -        "type": [
      -          "object",
      -          "null"
      -        ]
      -      },
      -      "ok": {
      -        "const": true,
      -        "description": "Whether the tool invocation succeeded."
      -      },
      -      "snapshot": {
      -        "description": "Exact immutable workspace snapshot associated with the result, when available.",
      -        "properties": {
      -          "snapshotId": {
      -            "format": "uuid",
      -            "type": "string"
      -          },
      -          "transactionRevision": {
      -            "type": [
      -              "integer",
      -              "null"
      -            ]
      -          },
      -          "workspaceEpoch": {
      -            "type": "integer"
      -          },
      -          "workspaceId": {
      -            "format": "uuid",
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "workspaceId",
      -          "workspaceEpoch",
      -          "snapshotId",
      -          "transactionRevision"
      -        ],
      -        "type": "object"
      -      },
      -      "warnings": {
      -        "description": "Non-fatal warnings the agent should consider.",
      -        "items": {
      -          "$ref": "#/$defs/warningInfo"
      -        },
      -        "type": "array"
      -      }
      -    },
      -    "required": [
      -      "ok",
      -      "data"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "properties": {
      -      "continuation": {
      -        "description": "Action the agent should take before retrying or continuing.",
      -        "oneOf": [
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "instruction": {
      -                "description": "Agent-facing instruction explaining how to continue.",
      -                "minLength": 1,
      -                "type": "string"
      -              },
      -              "kind": {
      -                "const": "CallTool",
      -                "description": "Action required before the original request can continue."
      -              },
      -              "tool": {
      -                "description": "Tool to call before continuing the original request.",
      -                "minLength": 1,
      -                "type": "string"
      -              }
      -            },
      -            "required": [
      -              "kind",
      -              "tool",
      -              "instruction"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "instruction": {
      -                "description": "Agent-facing instruction explaining how to continue.",
      -                "minLength": 1,
      -                "type": "string"
      -              },
      -              "kind": {
      -                "const": "ChooseTool",
      -                "description": "Action required before the original request can continue."
      -              },
      -              "tools": {
      -                "description": "Allowed tool choices from which the agent must select one.",
      -                "items": {
      -                  "description": "Name of a tool the agent may choose.",
      -                  "minLength": 1,
      -                  "type": "string"
      -                },
      -                "minItems": 1,
      -                "type": "array",
      -                "uniqueItems": true
      -              }
      -            },
      -            "required": [
      -              "kind",
      -              "tools",
      -              "instruction"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "instruction": {
      -                "description": "Agent-facing instruction explaining how to continue.",
      -                "minLength": 1,
      -                "type": "string"
      -              },
      -              "kind": {
      -                "const": "RetryRequest",
      -                "description": "Action required before the original request can continue."
      -              }
      -            },
      -            "required": [
      -              "kind",
      -              "instruction"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "instruction": {
      -                "description": "Agent-facing instruction explaining how to continue.",
      -                "minLength": 1,
      -                "type": "string"
      -              },
      -              "kind": {
      -                "const": "ReviseRequest",
      -                "description": "Action required before the original request can continue."
      -              }
      -            },
      -            "required": [
      -              "kind",
      -              "instruction"
      -            ],
      -            "type": "object"
      -          },
      -          {
      -            "additionalProperties": false,
      -            "properties": {
      -              "instruction": {
      -                "description": "Agent-facing instruction explaining how to continue.",
      -                "minLength": 1,
      -                "type": "string"
      -              },
      -              "kind": {
      -                "const": "ResolveExternally",
      -                "description": "Action required before the original request can continue."
      -              }
      -            },
      -            "required": [
      -              "kind",
      -              "instruction"
      -            ],
      -            "type": "object"
      -          }
      -        ]
      -      },
      -      "diagnostics": {
      -        "description": "Diagnostics that explain the failed invocation.",
      -        "items": {
      -          "properties": {
      -            "id": {
      -              "description": "The diagnostic identifier.",
      -              "type": "string"
      -            },
      -            "location": {
      -              "description": "The optional source location of the diagnostic.",
      -              "properties": {
      -                "column": {
      -                  "description": "The one-based column number.",
      -                  "type": "integer"
      -                },
      -                "document": {
      -                  "description": "The resolved document.",
      -                  "properties": {
      -                    "documentId": {
      -                      "description": "The document identifier.",
      -                      "type": "string"
      -                    },
      -                    "path": {
      -                      "description": "The normalized document path.",
      -                      "type": "string"
      -                    },
      -                    "projectId": {
      -                      "description": "The owning project identifier.",
      -                      "type": "string"
      -                    }
      -                  },
      -                  "required": [
      -                    "documentId",
      -                    "path",
      -                    "projectId"
      -                  ],
      -                  "type": [
      -                    "object",
      -                    "null"
      -                  ]
      -                },
      -                "line": {
      -                  "description": "The one-based line number.",
      -                  "type": "integer"
      -                },
      -                "selector": {
      -                  "description": "The canonical selector that can resolve this source location again.",
      -                  "properties": {
      -                    "span": {
      -                      "properties": {
      -                        "document": {
      -                          "description": "Provide exactly one of path or documentId.",
      -                          "properties": {
      -                            "documentId": {
      -                              "description": "Workspace-local document ID.",
      -                              "type": [
      -                                "string",
      -                                "null"
      -                              ]
      -                            },
      -                            "path": {
      -                              "description": "Workspace-relative path.",
      -                              "type": [
      -                                "string",
      -                                "null"
      -                              ]
      -                            },
      -                            "project": {
      -                              "description": "Disambiguates documents with matching paths or IDs.",
      -                              "properties": {
      -                                "name": {
      -                                  "type": [
      -                                    "string",
      -                                    "null"
      -                                  ]
      -                                },
      -                                "path": {
      -                                  "description": "Workspace-relative path.",
      -                                  "type": [
      -                                    "string",
      -                                    "null"
      -                                  ]
      -                                },
      -                                "projectId": {
      -                                  "type": [
      -                                    "string",
      -                                    "null"
      -                                  ]
      -                                },
      -                                "targetFramework": {
      -                                  "type": [
      -                                    "string",
      -                                    "null"
      -                                  ]
      -                                }
      -                              },
      -                              "type": [
      -                                "object",
      -                                "null"
      -                              ]
      -                            }
      -                          },
      -                          "type": "object"
      -                        },
      -                        "range": {
      -                          "description": "Zero-based UTF-16 range.",
      -                          "properties": {
      -                            "length": {
      -                              "description": "UTF-16 code-unit length.",
      -                              "maximum": 2147483647,
      -                              "minimum": 0,
      -                              "type": "integer"
      -                            },
      -                            "start": {
      -                              "description": "Zero-based UTF-16 offset.",
      -                              "maximum": 2147483647,
      -                              "minimum": 0,
      -                              "type": "integer"
      -                            }
      -                          },
      -                          "type": "object"
      -                        }
      -                      },
      -                      "required": [
      -                        "document",
      -                        "range"
      -                      ],
      -                      "type": "object"
      -                    }
      -                  },
      -                  "required": [
      -                    "span"
      -                  ],
      -                  "type": [
      -                    "object",
      -                    "null"
      -                  ]
      -                },
      -                "snapshot": {
      -                  "description": "The exact immutable workspace snapshot associated with this location.",
      -                  "properties": {
      -                    "snapshotId": {
      -                      "format": "uuid",
      -                      "type": "string"
      -                    },
      -                    "transactionRevision": {
      -                      "type": [
      -                        "integer",
      -                        "null"
      -                      ]
      -                    },
      -                    "workspaceEpoch": {
      -                      "type": "integer"
      -                    },
      -                    "workspaceId": {
      -                      "format": "uuid",
      -                      "type": "string"
      -                    }
      -                  },
      -                  "required": [
      -                    "workspaceId",
      -                    "workspaceEpoch",
      -                    "snapshotId",
      -                    "transactionRevision"
      -                  ],
      -                  "type": "object"
      -                },
      -                "span": {
      -                  "description": "The resolved text span.",
      -                  "properties": {
      -                    "length": {
      -                      "description": "UTF-16 code-unit length.",
      -                      "maximum": 2147483647,
      -                      "minimum": 0,
      -                      "type": "integer"
      -                    },
      -                    "start": {
      -                      "description": "Zero-based UTF-16 offset.",
      -                      "maximum": 2147483647,
      -                      "minimum": 0,
      -                      "type": "integer"
      -                    }
      -                  },
      -                  "type": [
      -                    "object",
      -                    "null"
      -                  ]
      -                }
      -              },
      -              "required": [
      -                "snapshot"
      -              ],
      -              "type": [
      -                "object",
      -                "null"
      -              ]
      -            },
      -            "message": {
      -              "description": "The diagnostic message.",
      -              "type": "string"
      -            },
      -            "severity": {
      -              "description": "The diagnostic severity.",
      -              "enum": [
      -                "Hidden",
      -                "Info",
      -                "Warning",
      -                "Error"
      -              ],
      -              "type": "string"
      -            }
      -          },
      -          "required": [
      -            "id",
      -            "message"
      -          ],
      -          "type": "object"
      -        },
      -        "type": "array"
      -      },
      -      "error": {
      -        "description": "Structured error details when the invocation failed.",
      -        "properties": {
      -          "code": {
      -            "description": "Stable machine-readable error code.",
      -            "type": "string"
      -          },
      -          "correlationId": {
      -            "description": "Correlation identifier for matching the failure to server-side diagnostics, when available.",
      -            "type": [
      -              "string",
      -              "null"
      -            ]
      -          },
      -          "message": {
      -            "description": "Human-readable explanation of the failure.",
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "code",
      -          "message"
      -        ],
      -        "type": "object"
      -      },
      -      "ok": {
      -        "const": false,
      -        "description": "Whether the tool invocation succeeded."
      -      },
      -      "warnings": {
      -        "description": "Non-fatal warnings the agent should consider.",
      -        "items": {
      -          "$ref": "#/$defs/warningInfo"
      -        },
      -        "type": "array"
      -      }
      -    },
      -    "required": [
      -      "ok",
      -      "error"
      -    ],
      -    "type": "object"
      -  },
      -  {
      -    "properties": {
      -      "diagnostics": {
      -        "description": "Diagnostics that explain the failed invocation.",
      -        "properties": {
      -          "detailsAvailable": {
      -            "const": true
      -          },
      -          "detailsTool": {
      -            "const": "get-error-details"
      -          }
      -        },
      -        "required": [
      -          "detailsAvailable",
      -          "detailsTool"
      -        ],
      -        "type": "object"
      -      },
      -      "error": {
      -        "description": "Structured error details when the invocation failed.",
      -        "properties": {
      -          "code": {
      -            "const": "UnhandledException"
      -          },
      -          "correlationId": {
      -            "format": "uuid",
      -            "type": "string"
      -          },
      -          "message": {
      -            "const": "Tool execution failed."
      -          }
      -        },
      -        "required": [
      -          "code",
      -          "message",
      -          "correlationId"
      -        ],
      -        "type": "object"
      -      },
      -      "ok": {
      -        "const": false,
      -        "description": "Whether the tool invocation succeeded."
      -      },
      -      "reporting": {
      -        "description": "Error-reporting workflow available for an unhandled failure.",
      -        "properties": {
      -          "canPrepare": {
      -            "type": "boolean"
      -          },
      -          "prepareTool": {
      -            "type": [
      -              "string",
      -              "null"
      -            ]
      -          },
      -          "state": {
      -            "enum": [
      -              "Available",
      -              "AlwaysApproved",
      -              "DisabledByConfiguration",
      -              "ApprovalUnavailable"
      -            ],
      -            "type": "string"
      -          }
      -        },
      -        "required": [
      -          "state"
      -        ],
      -        "type": "object"
      -      }
      -    },
      -    "required": [
      -      "ok",
      -      "error",
      -      "diagnostics"
      -    ],
      -    "type": "object"
      -  }
      -]New value: +[
      +  {
      +    "properties": {
      +      "data": {
      +        "description": "Tool-specific result payload.",
      +        "properties": {
      +          "error": {
      +            "description": "Captured diagnostic record for the failed tool invocation.",
      +            "properties": {
      +              "cancellationRequested": {
      +                "description": "Whether cancellation had been requested when the failure occurred.",
      +                "type": "boolean"
      +              },
      +              "correlationId": {
      +                "description": "Correlation identifier assigned to the captured failure.",
      +                "format": "uuid",
      +                "type": "string"
      +              },
      +              "dotNetVersion": {
      +                "description": ".NET runtime version used by the server.",
      +                "type": "string"
      +              },
      +              "durationMilliseconds": {
      +                "description": "Operation duration in milliseconds before failure.",
      +                "type": "integer"
      +              },
      +              "exceptions": {
      +                "description": "Captured exception chain for the failure.",
      +                "items": {
      +                  "properties": {
      +                    "component": {
      +                      "description": "Roslyn Workbench component in which the exception originated.",
      +                      "enum": [
      +                        "Unknown",
      +                        "RoslynWorkbench",
      +                        "Roslyn",
      +                        "DotNet"
      +                      ],
      +                      "type": "string"
      +                    },
      +                    "message": {
      +                      "description": "Exception message included with the user's consent.",
      +                      "type": "string"
      +                    },
      +                    "stackFrames": {
      +                      "description": "Diagnostic stack frames retained from the exception and classified by owning component.",
      +                      "items": {
      +                        "properties": {
      +                          "assembly": {
      +                            "description": "Assembly name, when available.",
      +                            "type": [
      +                              "string",
      +                              "null"
      +                            ]
      +                          },
      +                          "component": {
      +                            "description": "Roslyn Workbench component that owns this frame.",
      +                            "enum": [
      +                              "Unknown",
      +                              "RoslynWorkbench",
      +                              "Roslyn",
      +                              "DotNet"
      +                            ],
      +                            "type": "string"
      +                          },
      +                          "file": {
      +                            "description": "First-party source file path recorded by symbols, when available.",
      +                            "type": [
      +                              "string",
      +                              "null"
      +                            ]
      +                          },
      +                          "line": {
      +                            "description": "One-based source line number, when available.",
      +                            "type": [
      +                              "integer",
      +                              "null"
      +                            ]
      +                          },
      +                          "method": {
      +                            "description": "Method name, when available.",
      +                            "type": [
      +                              "string",
      +                              "null"
      +                            ]
      +                          },
      +                          "type": {
      +                            "description": "Declaring type name, when available.",
      +                            "type": [
      +                              "string",
      +                              "null"
      +                            ]
      +                          }
      +                        },
      +                        "type": "object"
      +                      },
      +                      "type": "array"
      +                    },
      +                    "type": {
      +                      "description": "Exception type name.",
      +                      "type": "string"
      +                    }
      +                  },
      +                  "required": [
      +                    "type",
      +                    "message"
      +                  ],
      +                  "type": "object"
      +                },
      +                "type": "array"
      +              },
      +              "executionFamily": {
      +                "description": "Execution path used by the failed operation, such as server, plugin, Code Action or Resource.",
      +                "type": "string"
      +              },
      +              "expiresAt": {
      +                "description": "Time at which this locally retained error record expires.",
      +                "format": "date-time",
      +                "type": "string"
      +              },
      +              "failureTime": {
      +                "description": "Time at which the MCP operation failed.",
      +                "format": "date-time",
      +                "type": "string"
      +              },
      +              "operatingSystem": {
      +                "description": "Operating system on which the server was running.",
      +                "type": "string"
      +              },
      +              "pluginClassification": {
      +                "description": "Plugin ownership classification when the failed tool was plugin-backed.",
      +                "type": "string"
      +              },
      +              "processorArchitecture": {
      +                "description": "Processor architecture of the server process.",
      +                "type": "string"
      +              },
      +              "roslynVersion": {
      +                "description": "Roslyn version used by the server.",
      +                "type": "string"
      +              },
      +              "serverVersion": {
      +                "description": "Roslyn Workbench server version that captured the failure.",
      +                "type": "string"
      +              },
      +              "toolName": {
      +                "description": "Published tool name, or resources/read for a resource-read failure.",
      +                "type": "string"
      +              },
      +              "workspace": {
      +                "description": "Workspace context active during the failure, when available.",
      +                "properties": {
      +                  "documentCount": {
      +                    "description": "Number of loaded documents at the time of failure.",
      +                    "type": "integer"
      +                  },
      +                  "lifecycleState": {
      +                    "description": "Workspace lifecycle state at the time of failure.",
      +                    "type": [
      +                      "string",
      +                      "null"
      +                    ]
      +                  },
      +                  "projectCount": {
      +                    "description": "Number of loaded projects at the time of failure.",
      +                    "type": "integer"
      +                  },
      +                  "transactionRevision": {
      +                    "description": "Active transaction revision at the time of failure, when applicable.",
      +                    "type": [
      +                      "integer",
      +                      "null"
      +                    ]
      +                  },
      +                  "workspaceEpoch": {
      +                    "description": "Workspace epoch active during the failure.",
      +                    "type": "integer"
      +                  },
      +                  "workspaceId": {
      +                    "description": "Server-generated identifier of the workspace active during the failure.",
      +                    "format": "uuid",
      +                    "type": "string"
      +                  }
      +                },
      +                "type": [
      +                  "object",
      +                  "null"
      +                ]
      +              }
      +            },
      +            "required": [
      +              "correlationId",
      +              "failureTime",
      +              "expiresAt",
      +              "toolName",
      +              "executionFamily",
      +              "pluginClassification",
      +              "durationMilliseconds",
      +              "serverVersion",
      +              "roslynVersion",
      +              "dotNetVersion",
      +              "operatingSystem",
      +              "processorArchitecture"
      +            ],
      +            "type": "object"
      +          },
      +          "safeForExternalSubmission": {
      +            "description": "Whether the captured details are safe to submit outside the local process.",
      +            "type": "boolean"
      +          },
      +          "sensitivity": {
      +            "description": "Sensitivity classification applied to the captured error details.",
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "error"
      +        ],
      +        "type": [
      +          "object",
      +          "null"
      +        ]
      +      },
      +      "ok": {
      +        "const": true,
      +        "description": "Whether the tool invocation succeeded."
      +      },
      +      "snapshot": {
      +        "description": "Exact immutable workspace snapshot associated with the result, when available.",
      +        "properties": {
      +          "snapshotId": {
      +            "format": "uuid",
      +            "type": "string"
      +          },
      +          "transactionRevision": {
      +            "type": [
      +              "integer",
      +              "null"
      +            ]
      +          },
      +          "workspaceEpoch": {
      +            "type": "integer"
      +          },
      +          "workspaceId": {
      +            "format": "uuid",
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "workspaceId",
      +          "workspaceEpoch",
      +          "snapshotId",
      +          "transactionRevision"
      +        ],
      +        "type": "object"
      +      },
      +      "warnings": {
      +        "description": "Non-fatal warnings the agent should consider.",
      +        "items": {
      +          "$ref": "#/$defs/warningInfo"
      +        },
      +        "type": "array"
      +      }
      +    },
      +    "required": [
      +      "ok",
      +      "data"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "properties": {
      +      "continuation": {
      +        "description": "Action the agent should take before retrying or continuing.",
      +        "oneOf": [
      +          {
      +            "additionalProperties": false,
      +            "properties": {
      +              "instruction": {
      +                "description": "Agent-facing instruction explaining how to continue.",
      +                "minLength": 1,
      +                "type": "string"
      +              },
      +              "kind": {
      +                "const": "CallTool",
      +                "description": "Action required before the original request can continue."
      +              },
      +              "tool": {
      +                "description": "Tool to call before continuing the original request.",
      +                "minLength": 1,
      +                "type": "string"
      +              }
      +            },
      +            "required": [
      +              "kind",
      +              "tool",
      +              "instruction"
      +            ],
      +            "type": "object"
      +          },
      +          {
      +            "additionalProperties": false,
      +            "properties": {
      +              "instruction": {
      +                "description": "Agent-facing instruction explaining how to continue.",
      +                "minLength": 1,
      +                "type": "string"
      +              },
      +              "kind": {
      +                "const": "ChooseTool",
      +                "description": "Action required before the original request can continue."
      +              },
      +              "tools": {
      +                "description": "Allowed tool choices from which the agent must select one.",
      +                "items": {
      +                  "description": "Name of a tool the agent may choose.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                },
      +                "minItems": 1,
      +                "type": "array",
      +                "uniqueItems": true
      +              }
      +            },
      +            "required": [
      +              "kind",
      +              "tools",
      +              "instruction"
      +            ],
      +            "type": "object"
      +          },
      +          {
      +            "additionalProperties": false,
      +            "properties": {
      +              "instruction": {
      +                "description": "Agent-facing instruction explaining how to continue.",
      +                "minLength": 1,
      +                "type": "string"
      +              },
      +              "kind": {
      +                "const": "RetryRequest",
      +                "description": "Action required before the original request can continue."
      +              }
      +            },
      +            "required": [
      +              "kind",
      +              "instruction"
      +            ],
      +            "type": "object"
      +          },
      +          {
      +            "additionalProperties": false,
      +            "properties": {
      +              "instruction": {
      +                "description": "Agent-facing instruction explaining how to continue.",
      +                "minLength": 1,
      +                "type": "string"
      +              },
      +              "kind": {
      +                "const": "ReviseRequest",
      +                "description": "Action required before the original request can continue."
      +              }
      +            },
      +            "required": [
      +              "kind",
      +              "instruction"
      +            ],
      +            "type": "object"
      +          },
      +          {
      +            "additionalProperties": false,
      +            "properties": {
      +              "instruction": {
      +                "description": "Agent-facing instruction explaining how to continue.",
      +                "minLength": 1,
      +                "type": "string"
      +              },
      +              "kind": {
      +                "const": "ResolveExternally",
      +                "description": "Action required before the original request can continue."
      +              }
      +            },
      +            "required": [
      +              "kind",
      +              "instruction"
      +            ],
      +            "type": "object"
      +          }
      +        ]
      +      },
      +      "diagnostics": {
      +        "description": "Diagnostics that explain the failed invocation.",
      +        "items": {
      +          "properties": {
      +            "id": {
      +              "description": "The diagnostic identifier.",
      +              "type": "string"
      +            },
      +            "location": {
      +              "description": "The optional source location of the diagnostic.",
      +              "properties": {
      +                "column": {
      +                  "description": "The one-based column number.",
      +                  "type": "integer"
      +                },
      +                "document": {
      +                  "description": "The resolved document.",
      +                  "properties": {
      +                    "documentId": {
      +                      "description": "The document identifier.",
      +                      "type": "string"
      +                    },
      +                    "path": {
      +                      "description": "The normalized document path.",
      +                      "type": "string"
      +                    },
      +                    "projectId": {
      +                      "description": "The owning project identifier.",
      +                      "type": "string"
      +                    }
      +                  },
      +                  "required": [
      +                    "documentId",
      +                    "path",
      +                    "projectId"
      +                  ],
      +                  "type": [
      +                    "object",
      +                    "null"
      +                  ]
      +                },
      +                "line": {
      +                  "description": "The one-based line number.",
      +                  "type": "integer"
      +                },
      +                "selector": {
      +                  "description": "The canonical selector that can resolve this source location again.",
      +                  "properties": {
      +                    "span": {
      +                      "properties": {
      +                        "document": {
      +                          "description": "Provide exactly one of path or documentId.",
      +                          "properties": {
      +                            "documentId": {
      +                              "description": "Workspace-local document ID.",
      +                              "type": [
      +                                "string",
      +                                "null"
      +                              ]
      +                            },
      +                            "path": {
      +                              "description": "Workspace-relative path.",
      +                              "type": [
      +                                "string",
      +                                "null"
      +                              ]
      +                            },
      +                            "project": {
      +                              "description": "Disambiguates documents with matching paths or IDs.",
      +                              "properties": {
      +                                "name": {
      +                                  "type": [
      +                                    "string",
      +                                    "null"
      +                                  ]
      +                                },
      +                                "path": {
      +                                  "description": "Workspace-relative path.",
      +                                  "type": [
      +                                    "string",
      +                                    "null"
      +                                  ]
      +                                },
      +                                "projectId": {
      +                                  "type": [
      +                                    "string",
      +                                    "null"
      +                                  ]
      +                                },
      +                                "targetFramework": {
      +                                  "type": [
      +                                    "string",
      +                                    "null"
      +                                  ]
      +                                }
      +                              },
      +                              "type": [
      +                                "object",
      +                                "null"
      +                              ]
      +                            }
      +                          },
      +                          "type": "object"
      +                        },
      +                        "range": {
      +                          "description": "Zero-based UTF-16 range.",
      +                          "properties": {
      +                            "length": {
      +                              "description": "UTF-16 code-unit length.",
      +                              "maximum": 2147483647,
      +                              "minimum": 0,
      +                              "type": "integer"
      +                            },
      +                            "start": {
      +                              "description": "Zero-based UTF-16 offset.",
      +                              "maximum": 2147483647,
      +                              "minimum": 0,
      +                              "type": "integer"
      +                            }
      +                          },
      +                          "type": "object"
      +                        }
      +                      },
      +                      "required": [
      +                        "document",
      +                        "range"
      +                      ],
      +                      "type": "object"
      +                    }
      +                  },
      +                  "required": [
      +                    "span"
      +                  ],
      +                  "type": [
      +                    "object",
      +                    "null"
      +                  ]
      +                },
      +                "snapshot": {
      +                  "description": "The exact immutable workspace snapshot associated with this location.",
      +                  "properties": {
      +                    "snapshotId": {
      +                      "format": "uuid",
      +                      "type": "string"
      +                    },
      +                    "transactionRevision": {
      +                      "type": [
      +                        "integer",
      +                        "null"
      +                      ]
      +                    },
      +                    "workspaceEpoch": {
      +                      "type": "integer"
      +                    },
      +                    "workspaceId": {
      +                      "format": "uuid",
      +                      "type": "string"
      +                    }
      +                  },
      +                  "required": [
      +                    "workspaceId",
      +                    "workspaceEpoch",
      +                    "snapshotId",
      +                    "transactionRevision"
      +                  ],
      +                  "type": "object"
      +                },
      +                "span": {
      +                  "description": "The resolved text span.",
      +                  "properties": {
      +                    "length": {
      +                      "description": "UTF-16 code-unit length.",
      +                      "maximum": 2147483647,
      +                      "minimum": 0,
      +                      "type": "integer"
      +                    },
      +                    "start": {
      +                      "description": "Zero-based UTF-16 offset.",
      +                      "maximum": 2147483647,
      +                      "minimum": 0,
      +                      "type": "integer"
      +                    }
      +                  },
      +                  "type": [
      +                    "object",
      +                    "null"
      +                  ]
      +                }
      +              },
      +              "required": [
      +                "snapshot"
      +              ],
      +              "type": [
      +                "object",
      +                "null"
      +              ]
      +            },
      +            "message": {
      +              "description": "The diagnostic message.",
      +              "type": "string"
      +            },
      +            "severity": {
      +              "description": "The diagnostic severity.",
      +              "enum": [
      +                "Hidden",
      +                "Info",
      +                "Warning",
      +                "Error"
      +              ],
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "id",
      +            "message"
      +          ],
      +          "type": "object"
      +        },
      +        "type": "array"
      +      },
      +      "error": {
      +        "description": "Structured error details when the invocation failed.",
      +        "properties": {
      +          "code": {
      +            "description": "Stable machine-readable error code.",
      +            "type": "string"
      +          },
      +          "correlationId": {
      +            "description": "Correlation identifier for matching the failure to server-side diagnostics, when available.",
      +            "type": [
      +              "string",
      +              "null"
      +            ]
      +          },
      +          "message": {
      +            "description": "Human-readable explanation of the failure.",
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "code",
      +          "message"
      +        ],
      +        "type": "object"
      +      },
      +      "ok": {
      +        "const": false,
      +        "description": "Whether the tool invocation succeeded."
      +      },
      +      "warnings": {
      +        "description": "Non-fatal warnings the agent should consider.",
      +        "items": {
      +          "$ref": "#/$defs/warningInfo"
      +        },
      +        "type": "array"
      +      }
      +    },
      +    "required": [
      +      "ok",
      +      "error"
      +    ],
      +    "type": "object"
      +  },
      +  {
      +    "properties": {
      +      "diagnostics": {
      +        "description": "Diagnostics that explain the failed invocation.",
      +        "properties": {
      +          "detailsAvailable": {
      +            "const": true
      +          },
      +          "detailsTool": {
      +            "const": "get-error-details"
      +          }
      +        },
      +        "required": [
      +          "detailsAvailable",
      +          "detailsTool"
      +        ],
      +        "type": "object"
      +      },
      +      "error": {
      +        "description": "Structured error details when the invocation failed.",
      +        "properties": {
      +          "code": {
      +            "const": "UnhandledException"
      +          },
      +          "correlationId": {
      +            "format": "uuid",
      +            "type": "string"
      +          },
      +          "message": {
      +            "const": "Tool execution failed."
      +          }
      +        },
      +        "required": [
      +          "code",
      +          "message",
      +          "correlationId"
      +        ],
      +        "type": "object"
      +      },
      +      "ok": {
      +        "const": false,
      +        "description": "Whether the tool invocation succeeded."
      +      },
      +      "reporting": {
      +        "description": "Error-reporting workflow available for an unhandled failure.",
      +        "properties": {
      +          "canPrepare": {
      +            "type": "boolean"
      +          },
      +          "prepareTool": {
      +            "type": [
      +              "string",
      +              "null"
      +            ]
      +          },
      +          "state": {
      +            "enum": [
      +              "Available",
      +              "AlwaysApproved",
      +              "DisabledByConfiguration",
      +              "ApprovalUnavailable"
      +            ],
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "state"
      +        ],
      +        "type": "object"
      +      }
      +    },
      +    "required": [
      +      "ok",
      +      "error",
      +      "diagnostics"
      +    ],
      +    "type": "object"
      +  }
      +]
  2. Changed1 schema field changedv1.0.4
    • changedOutput schema / (root)
      Previous value: -nullNew value: +{
      +  "$defs": {
      +    "warningInfo": {
      +      "properties": {
      +        "code": {
      +          "description": "The stable machine-readable warning code.",
      +          "type": "string"
      +        },
      +        "message": {
      +          "description": "The human-readable warning message.",
      +          "type": "string"
      +        }
      +      },
      +      "required": [
      +        "code",
      +        "message"
      +      ],
      +      "type": "object"
      +    }
      +  },
      +  "oneOf": [
      +    {
      +      "properties": {
      +        "data": {
      +          "description": "Tool-specific result payload.",
      +          "properties": {
      +            "error": {
      +              "description": "Captured diagnostic record for the failed tool invocation.",
      +              "properties": {
      +                "cancellationRequested": {
      +                  "description": "Whether cancellation had been requested when the failure occurred.",
      +                  "type": "boolean"
      +                },
      +                "correlationId": {
      +                  "description": "Correlation identifier assigned to the captured failure.",
      +                  "format": "uuid",
      +                  "type": "string"
      +                },
      +                "dotNetVersion": {
      +                  "description": ".NET runtime version used by the server.",
      +                  "type": "string"
      +                },
      +                "durationMilliseconds": {
      +                  "description": "Tool execution duration in milliseconds before failure.",
      +                  "type": "integer"
      +                },
      +                "exceptions": {
      +                  "description": "Captured exception chain for the failure.",
      +                  "items": {
      +                    "properties": {
      +                      "component": {
      +                        "description": "Roslyn Workbench component in which the exception originated.",
      +                        "enum": [
      +                          "Unknown",
      +                          "RoslynWorkbench",
      +                          "Roslyn",
      +                          "DotNet"
      +                        ],
      +                        "type": "string"
      +                      },
      +                      "message": {
      +                        "description": "Exception message included with the user's consent.",
      +                        "type": "string"
      +                      },
      +                      "stackFrames": {
      +                        "description": "Diagnostic stack frames retained from the exception and classified by owning component.",
      +                        "items": {
      +                          "properties": {
      +                            "assembly": {
      +                              "description": "Assembly name, when available.",
      +                              "type": [
      +                                "string",
      +                                "null"
      +                              ]
      +                            },
      +                            "component": {
      +                              "description": "Roslyn Workbench component that owns this frame.",
      +                              "enum": [
      +                                "Unknown",
      +                                "RoslynWorkbench",
      +                                "Roslyn",
      +                                "DotNet"
      +                              ],
      +                              "type": "string"
      +                            },
      +                            "file": {
      +                              "description": "First-party source file path recorded by symbols, when available.",
      +                              "type": [
      +                                "string",
      +                                "null"
      +                              ]
      +                            },
      +                            "line": {
      +                              "description": "One-based source line number, when available.",
      +                              "type": [
      +                                "integer",
      +                                "null"
      +                              ]
      +                            },
      +                            "method": {
      +                              "description": "Method name, when available.",
      +                              "type": [
      +                                "string",
      +                                "null"
      +                              ]
      +                            },
      +                            "type": {
      +                              "description": "Declaring type name, when available.",
      +                              "type": [
      +                                "string",
      +                                "null"
      +                              ]
      +                            }
      +                          },
      +                          "type": "object"
      +                        },
      +                        "type": "array"
      +                      },
      +                      "type": {
      +                        "description": "Exception type name.",
      +                        "type": "string"
      +                      }
      +                    },
      +                    "required": [
      +                      "type",
      +                      "message"
      +                    ],
      +                    "type": "object"
      +                  },
      +                  "type": "array"
      +                },
      +                "executionFamily": {
      +                  "description": "Execution path used by the failed tool, such as server, plugin, or Code Action.",
      +                  "type": "string"
      +                },
      +                "expiresAt": {
      +                  "description": "Time at which this locally retained error record expires.",
      +                  "format": "date-time",
      +                  "type": "string"
      +                },
      +                "failureTime": {
      +                  "description": "Time at which the tool invocation failed.",
      +                  "format": "date-time",
      +                  "type": "string"
      +                },
      +                "operatingSystem": {
      +                  "description": "Operating system on which the server was running.",
      +                  "type": "string"
      +                },
      +                "pluginClassification": {
      +                  "description": "Plugin ownership classification when the failed tool was plugin-backed.",
      +                  "type": "string"
      +                },
      +                "processorArchitecture": {
      +                  "description": "Processor architecture of the server process.",
      +                  "type": "string"
      +                },
      +                "roslynVersion": {
      +                  "description": "Roslyn version used by the server.",
      +                  "type": "string"
      +                },
      +                "serverVersion": {
      +                  "description": "Roslyn Workbench server version that captured the failure.",
      +                  "type": "string"
      +                },
      +                "toolName": {
      +                  "description": "MCP tool that failed.",
      +                  "type": "string"
      +                },
      +                "workspace": {
      +                  "description": "Workspace context active during the failure, when available.",
      +                  "properties": {
      +                    "documentCount": {
      +                      "description": "Number of loaded documents at the time of failure.",
      +                      "type": "integer"
      +                    },
      +                    "lifecycleState": {
      +                      "description": "Workspace lifecycle state at the time of failure.",
      +                      "type": [
      +                        "string",
      +                        "null"
      +                      ]
      +                    },
      +                    "projectCount": {
      +                      "description": "Number of loaded projects at the time of failure.",
      +                      "type": "integer"
      +                    },
      +                    "transactionRevision": {
      +                      "description": "Active transaction revision at the time of failure, when applicable.",
      +                      "type": [
      +                        "integer",
      +                        "null"
      +                      ]
      +                    },
      +                    "workspaceEpoch": {
      +                      "description": "Workspace epoch active during the failure.",
      +                      "type": "integer"
      +                    },
      +                    "workspaceId": {
      +                      "description": "Server-generated identifier of the workspace active during the failure.",
      +                      "format": "uuid",
      +                      "type": "string"
      +                    }
      +                  },
      +                  "type": [
      +                    "object",
      +                    "null"
      +                  ]
      +                }
      +              },
      +              "required": [
      +                "correlationId",
      +                "failureTime",
      +                "expiresAt",
      +                "toolName",
      +                "executionFamily",
      +                "pluginClassification",
      +                "durationMilliseconds",
      +                "serverVersion",
      +                "roslynVersion",
      +                "dotNetVersion",
      +                "operatingSystem",
      +                "processorArchitecture"
      +              ],
      +              "type": "object"
      +            },
      +            "safeForExternalSubmission": {
      +              "description": "Whether the captured details are safe to submit outside the local process.",
      +              "type": "boolean"
      +            },
      +            "sensitivity": {
      +              "description": "Sensitivity classification applied to the captured error details.",
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "error"
      +          ],
      +          "type": [
      +            "object",
      +            "null"
      +          ]
      +        },
      +        "ok": {
      +          "const": true,
      +          "description": "Whether the tool invocation succeeded."
      +        },
      +        "snapshot": {
      +          "description": "Exact immutable workspace snapshot associated with the result, when available.",
      +          "properties": {
      +            "snapshotId": {
      +              "format": "uuid",
      +              "type": "string"
      +            },
      +            "transactionRevision": {
      +              "type": [
      +                "integer",
      +                "null"
      +              ]
      +            },
      +            "workspaceEpoch": {
      +              "type": "integer"
      +            },
      +            "workspaceId": {
      +              "format": "uuid",
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "workspaceId",
      +            "workspaceEpoch",
      +            "snapshotId",
      +            "transactionRevision"
      +          ],
      +          "type": "object"
      +        },
      +        "warnings": {
      +          "description": "Non-fatal warnings the agent should consider.",
      +          "items": {
      +            "$ref": "#/$defs/warningInfo"
      +          },
      +          "type": "array"
      +        }
      +      },
      +      "required": [
      +        "ok",
      +        "data"
      +      ],
      +      "type": "object"
      +    },
      +    {
      +      "properties": {
      +        "continuation": {
      +          "description": "Action the agent should take before retrying or continuing.",
      +          "oneOf": [
      +            {
      +              "additionalProperties": false,
      +              "properties": {
      +                "instruction": {
      +                  "description": "Agent-facing instruction explaining how to continue.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                },
      +                "kind": {
      +                  "const": "CallTool",
      +                  "description": "Action required before the original request can continue."
      +                },
      +                "tool": {
      +                  "description": "Tool to call before continuing the original request.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                }
      +              },
      +              "required": [
      +                "kind",
      +                "tool",
      +                "instruction"
      +              ],
      +              "type": "object"
      +            },
      +            {
      +              "additionalProperties": false,
      +              "properties": {
      +                "instruction": {
      +                  "description": "Agent-facing instruction explaining how to continue.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                },
      +                "kind": {
      +                  "const": "ChooseTool",
      +                  "description": "Action required before the original request can continue."
      +                },
      +                "tools": {
      +                  "description": "Allowed tool choices from which the agent must select one.",
      +                  "items": {
      +                    "description": "Name of a tool the agent may choose.",
      +                    "minLength": 1,
      +                    "type": "string"
      +                  },
      +                  "minItems": 1,
      +                  "type": "array",
      +                  "uniqueItems": true
      +                }
      +              },
      +              "required": [
      +                "kind",
      +                "tools",
      +                "instruction"
      +              ],
      +              "type": "object"
      +            },
      +            {
      +              "additionalProperties": false,
      +              "properties": {
      +                "instruction": {
      +                  "description": "Agent-facing instruction explaining how to continue.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                },
      +                "kind": {
      +                  "const": "RetryRequest",
      +                  "description": "Action required before the original request can continue."
      +                }
      +              },
      +              "required": [
      +                "kind",
      +                "instruction"
      +              ],
      +              "type": "object"
      +            },
      +            {
      +              "additionalProperties": false,
      +              "properties": {
      +                "instruction": {
      +                  "description": "Agent-facing instruction explaining how to continue.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                },
      +                "kind": {
      +                  "const": "ReviseRequest",
      +                  "description": "Action required before the original request can continue."
      +                }
      +              },
      +              "required": [
      +                "kind",
      +                "instruction"
      +              ],
      +              "type": "object"
      +            },
      +            {
      +              "additionalProperties": false,
      +              "properties": {
      +                "instruction": {
      +                  "description": "Agent-facing instruction explaining how to continue.",
      +                  "minLength": 1,
      +                  "type": "string"
      +                },
      +                "kind": {
      +                  "const": "ResolveExternally",
      +                  "description": "Action required before the original request can continue."
      +                }
      +              },
      +              "required": [
      +                "kind",
      +                "instruction"
      +              ],
      +              "type": "object"
      +            }
      +          ]
      +        },
      +        "diagnostics": {
      +          "description": "Diagnostics that explain the failed invocation.",
      +          "items": {
      +            "properties": {
      +              "id": {
      +                "description": "The diagnostic identifier.",
      +                "type": "string"
      +              },
      +              "location": {
      +                "description": "The optional source location of the diagnostic.",
      +                "properties": {
      +                  "column": {
      +                    "description": "The one-based column number.",
      +                    "type": "integer"
      +                  },
      +                  "document": {
      +                    "description": "The resolved document.",
      +                    "properties": {
      +                      "documentId": {
      +                        "description": "The document identifier.",
      +                        "type": "string"
      +                      },
      +                      "path": {
      +                        "description": "The normalized document path.",
      +                        "type": "string"
      +                      },
      +                      "projectId": {
      +                        "description": "The owning project identifier.",
      +                        "type": "string"
      +                      }
      +                    },
      +                    "required": [
      +                      "documentId",
      +                      "path",
      +                      "projectId"
      +                    ],
      +                    "type": [
      +                      "object",
      +                      "null"
      +                    ]
      +                  },
      +                  "line": {
      +                    "description": "The one-based line number.",
      +                    "type": "integer"
      +                  },
      +                  "selector": {
      +                    "description": "The canonical selector that can resolve this source location again.",
      +                    "properties": {
      +                      "span": {
      +                        "properties": {
      +                          "document": {
      +                            "description": "Provide exactly one of path or documentId.",
      +                            "properties": {
      +                              "documentId": {
      +                                "description": "Workspace-local document ID.",
      +                                "type": [
      +                                  "string",
      +                                  "null"
      +                                ]
      +                              },
      +                              "path": {
      +                                "description": "Workspace-relative path.",
      +                                "type": [
      +                                  "string",
      +                                  "null"
      +                                ]
      +                              },
      +                              "project": {
      +                                "description": "Disambiguates documents with matching paths or IDs.",
      +                                "properties": {
      +                                  "name": {
      +                                    "type": [
      +                                      "string",
      +                                      "null"
      +                                    ]
      +                                  },
      +                                  "path": {
      +                                    "description": "Workspace-relative path.",
      +                                    "type": [
      +                                      "string",
      +                                      "null"
      +                                    ]
      +                                  },
      +                                  "projectId": {
      +                                    "type": [
      +                                      "string",
      +                                      "null"
      +                                    ]
      +                                  },
      +                                  "targetFramework": {
      +                                    "type": [
      +                                      "string",
      +                                      "null"
      +                                    ]
      +                                  }
      +                                },
      +                                "type": [
      +                                  "object",
      +                                  "null"
      +                                ]
      +                              }
      +                            },
      +                            "type": "object"
      +                          },
      +                          "range": {
      +                            "description": "Zero-based UTF-16 range.",
      +                            "properties": {
      +                              "length": {
      +                                "description": "UTF-16 code-unit length.",
      +                                "maximum": 2147483647,
      +                                "minimum": 0,
      +                                "type": "integer"
      +                              },
      +                              "start": {
      +                                "description": "Zero-based UTF-16 offset.",
      +                                "maximum": 2147483647,
      +                                "minimum": 0,
      +                                "type": "integer"
      +                              }
      +                            },
      +                            "type": "object"
      +                          }
      +                        },
      +                        "required": [
      +                          "document",
      +                          "range"
      +                        ],
      +                        "type": "object"
      +                      }
      +                    },
      +                    "required": [
      +                      "span"
      +                    ],
      +                    "type": [
      +                      "object",
      +                      "null"
      +                    ]
      +                  },
      +                  "snapshot": {
      +                    "description": "The exact immutable workspace snapshot associated with this location.",
      +                    "properties": {
      +                      "snapshotId": {
      +                        "format": "uuid",
      +                        "type": "string"
      +                      },
      +                      "transactionRevision": {
      +                        "type": [
      +                          "integer",
      +                          "null"
      +                        ]
      +                      },
      +                      "workspaceEpoch": {
      +                        "type": "integer"
      +                      },
      +                      "workspaceId": {
      +                        "format": "uuid",
      +                        "type": "string"
      +                      }
      +                    },
      +                    "required": [
      +                      "workspaceId",
      +                      "workspaceEpoch",
      +                      "snapshotId",
      +                      "transactionRevision"
      +                    ],
      +                    "type": "object"
      +                  },
      +                  "span": {
      +                    "description": "The resolved text span.",
      +                    "properties": {
      +                      "length": {
      +                        "description": "UTF-16 code-unit length.",
      +                        "maximum": 2147483647,
      +                        "minimum": 0,
      +                        "type": "integer"
      +                      },
      +                      "start": {
      +                        "description": "Zero-based UTF-16 offset.",
      +                        "maximum": 2147483647,
      +                        "minimum": 0,
      +                        "type": "integer"
      +                      }
      +                    },
      +                    "type": [
      +                      "object",
      +                      "null"
      +                    ]
      +                  }
      +                },
      +                "required": [
      +                  "snapshot"
      +                ],
      +                "type": [
      +                  "object",
      +                  "null"
      +                ]
      +              },
      +              "message": {
      +                "description": "The diagnostic message.",
      +                "type": "string"
      +              },
      +              "severity": {
      +                "description": "The diagnostic severity.",
      +                "enum": [
      +                  "Hidden",
      +                  "Info",
      +                  "Warning",
      +                  "Error"
      +                ],
      +                "type": "string"
      +              }
      +            },
      +            "required": [
      +              "id",
      +              "message"
      +            ],
      +            "type": "object"
      +          },
      +          "type": "array"
      +        },
      +        "error": {
      +          "description": "Structured error details when the invocation failed.",
      +          "properties": {
      +            "code": {
      +              "description": "Stable machine-readable error code.",
      +              "type": "string"
      +            },
      +            "correlationId": {
      +              "description": "Correlation identifier for matching the failure to server-side diagnostics, when available.",
      +              "type": [
      +                "string",
      +                "null"
      +              ]
      +            },
      +            "message": {
      +              "description": "Human-readable explanation of the failure.",
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "code",
      +            "message"
      +          ],
      +          "type": "object"
      +        },
      +        "ok": {
      +          "const": false,
      +          "description": "Whether the tool invocation succeeded."
      +        },
      +        "warnings": {
      +          "description": "Non-fatal warnings the agent should consider.",
      +          "items": {
      +            "$ref": "#/$defs/warningInfo"
      +          },
      +          "type": "array"
      +        }
      +      },
      +      "required": [
      +        "ok",
      +        "error"
      +      ],
      +      "type": "object"
      +    },
      +    {
      +      "properties": {
      +        "diagnostics": {
      +          "description": "Diagnostics that explain the failed invocation.",
      +          "properties": {
      +            "detailsAvailable": {
      +              "const": true
      +            },
      +            "detailsTool": {
      +              "const": "get-error-details"
      +            }
      +          },
      +          "required": [
      +            "detailsAvailable",
      +            "detailsTool"
      +          ],
      +          "type": "object"
      +        },
      +        "error": {
      +          "description": "Structured error details when the invocation failed.",
      +          "properties": {
      +            "code": {
      +              "const": "UnhandledException"
      +            },
      +            "correlationId": {
      +              "format": "uuid",
      +              "type": "string"
      +            },
      +            "message": {
      +              "const": "Tool execution failed."
      +            }
      +          },
      +          "required": [
      +            "code",
      +            "message",
      +            "correlationId"
      +          ],
      +          "type": "object"
      +        },
      +        "ok": {
      +          "const": false,
      +          "description": "Whether the tool invocation succeeded."
      +        },
      +        "reporting": {
      +          "description": "Error-reporting workflow available for an unhandled failure.",
      +          "properties": {
      +            "canPrepare": {
      +              "type": "boolean"
      +            },
      +            "prepareTool": {
      +              "type": [
      +                "string",
      +                "null"
      +              ]
      +            },
      +            "state": {
      +              "enum": [
      +                "Available",
      +                "AlwaysApproved",
      +                "DisabledByConfiguration",
      +                "ApprovalUnavailable"
      +              ],
      +              "type": "string"
      +            }
      +          },
      +          "required": [
      +            "state"
      +          ],
      +          "type": "object"
      +        }
      +      },
      +      "required": [
      +        "ok",
      +        "error",
      +        "diagnostics"
      +      ],
      +      "type": "object"
      +    }
      +  ],
      +  "type": "object"
      +}
  3. First observedv1.0.2

TDQS

A3.8/5.0
Behavior4/5

Does the description disclose side effects, auth requirements, rate limits, or destructive behavior?

Annotations already cover the safety profile (readOnly, idempotent, non-destructive, closed-world), yet the description adds genuinely new context: results are temporary, may contain paths and user-authored identifiers, and must not leave the machine. It stops short of saying how long 'temporary' lasts or what happens when a correlationId has expired.

Agents need to know what a tool does to the world before calling it. Descriptions should go beyond structured annotations to explain consequences.

Conciseness5/5

Is the description appropriately sized, front-loaded, and free of redundancy?

One sentence, front-loaded with what is returned, followed by the sensitivity and restriction clauses. No filler and every clause carries information.

Shorter descriptions cost fewer tokens and are easier for agents to parse. Every sentence should earn its place.

Completeness4/5

Given the tool's complexity, does the description cover enough for an agent to succeed on first attempt?

An output schema exists, so return values need not be described, and the description covers audience and data-sensitivity concerns. The remaining gap is edge behavior (unknown or expired correlationId) which an agent would want before calling.

Complex tools with many parameters or behaviors need more documentation. Simple tools need less. This dimension scales expectations accordingly.

Parameters3/5

Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?

Schema coverage is 100% and the single correlationId parameter is fully documented in the schema as coming from the failed invocation. The description adds no syntax, format, or failure semantics beyond that, so the baseline of 3 applies.

Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.

Purpose4/5

Does the description clearly state what the tool does and how it differs from similar tools?

States a specific verb (returns) and resource (temporary local diagnostic details) scoped to an unexpected tool or resource-read failure, which distinguishes it from general diagnostic tools like get-diagnostics. It does not name its closest siblings prepare-error-report and submit-error-report, so the reader must infer the split between fetching, preparing, and submitting an error report.

Agents choose between tools based on descriptions. A clear purpose with a specific verb and resource helps agents select the right tool.

Usage Guidelines3/5

Does the description explain when to use this tool, when not to, or what alternatives exist?

The description gives a clear trigger (after an unexpected tool or resource-read failure) and a hard restriction (never submit externally, trusted local agent only), but it never explicitly points to prepare-error-report or submit-error-report as the follow-up path. Usage is implied rather than instructed.

Agents often have multiple tools that could apply. Explicit usage guidance like "use X instead of Y when Z" prevents misuse.