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Find Callees

find-callees
Read-onlyIdempotent

Finds outgoing method and constructor calls made by a C# symbol or selected code region, using the loaded Roslyn workspace without executing code.

Instructions

Finds distinct method and constructor targets invoked by a source executable symbol or selected executable region. Use this for outgoing calls; use find-callers for incoming call sites. Reads the loaded workspace without executing code. Direct calls are the default; includeIndirect traverses reachable source bodies up to maxDepth (default 3, direct calls at depth 1). Nested lambda and local-function bodies are skipped during each body scan. Returns source and a bounded callees collection, not call sites or runtime dispatch targets. calleesLimit defaults to 100; check callees.hasMore for result truncation within the requested depth. Input: Provide exactly one of symbol or location.

Input Schema

NameRequiredDescriptionDefault
symbolNoSymbol whose callees should be found.
locationNoSource location or executable region whose contained callees should be found.
maxDepthNoThe maximum call depth to traverse when indirect callees are included. Direct callees are at depth one.
workspaceNoProvide workspaceId, alias, path, or any combination.
calleesLimitNoMaximum number of results to return.
includeIndirectNoWhether reachable source callees should be traversed transitively.
expectedSnapshotNoEcho the snapshot returned with the data or transaction state used to construct this request.

Output Schema

NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. Changed10 schema fields changedv1.0.5
    • addedInput schema / $defs
      Added value: +{
      +  "document": {
      +    "properties": {
      +      "documentId": {
      +        "description": "Workspace-local document ID.",
      +        "type": "string"
      +      },
      +      "path": {
      +        "description": "Workspace-relative path.",
      +        "type": "string"
      +      },
      +      "project": {
      +        "$ref": "#/$defs/project",
      +        "description": "Disambiguates documents with matching paths or IDs."
      +      }
      +    },
      +    "type": "object"
      +  },
      +  "location": {
      +    "properties": {
      +      "selection": {
      +        "properties": {
      +          "contextAfter": {
      +            "type": [
      +              "string",
      +              "null"
      +            ]
      +          },
      +          "contextBefore": {
      +            "type": [
      +              "string",
      +              "null"
      +            ]
      +          },
      +          "document": {
      +            "$ref": "#/$defs/document",
      +            "description": "Provide exactly one of path or documentId."
      +          },
      +          "selectedText": {
      +            "minLength": 1,
      +            "type": "string"
      +          }
      +        },
      +        "required": [
      +          "document",
      +          "selectedText"
      +        ],
      +        "type": "object"
      +      },
      +      "span": {
      +        "properties": {
      +          "document": {
      +            "$ref": "#/$defs/document",
      +            "description": "Provide exactly one of path or documentId."
      +          },
      +          "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"
      +      }
      +    },
      +    "type": "object"
      +  },
      +  "project": {
      +    "properties": {
      +      "name": {
      +        "type": "string"
      +      },
      +      "path": {
      +        "description": "Workspace-relative path.",
      +        "type": "string"
      +      },
      +      "projectId": {
      +        "type": "string"
      +      },
      +      "targetFramework": {
      +        "type": "string"
      +      }
      +    },
      +    "type": [
      +      "object",
      +      "null"
      +    ]
      +  }
      +}
    • addedInput schema / properties / location / $ref
      Added value: +"#/$defs/location"
    • removedInput schema / properties / location / properties
      Removed value: -{
      -  "selection": {
      -    "$ref": "#/properties/symbol/properties/location/properties/selection"
      -  },
      -  "span": {
      -    "$ref": "#/properties/symbol/properties/location/properties/span"
      -  }
      -}
    • removedInput schema / properties / location / type
      Removed value: -"object"
    • addedInput schema / properties / symbol / properties / location / $ref
      Added value: +"#/$defs/location"
    • removedInput schema / properties / symbol / properties / location / properties
      Removed value: -{
      -  "selection": {
      -    "properties": {
      -      "contextAfter": {
      -        "type": [
      -          "string",
      -          "null"
      -        ]
      -      },
      -      "contextBefore": {
      -        "type": [
      -          "string",
      -          "null"
      -        ]
      -      },
      -      "document": {
      -        "description": "Provide exactly one of path or documentId.",
      -        "properties": {
      -          "documentId": {
      -            "description": "Workspace-local document ID.",
      -            "type": "string"
      -          },
      -          "path": {
      -            "description": "Workspace-relative path.",
      -            "type": "string"
      -          },
      -          "project": {
      -            "$ref": "#/properties/symbol/properties/location/properties/span/properties/document/properties/project",
      -            "description": "Disambiguates documents with matching paths or IDs."
      -          }
      -        },
      -        "type": "object"
      -      },
      -      "selectedText": {
      -        "minLength": 1,
      -        "type": "string"
      -      }
      -    },
      -    "required": [
      -      "document",
      -      "selectedText"
      -    ],
      -    "type": "object"
      -  },
      -  "span": {
      -    "properties": {
      -      "document": {
      -        "description": "Provide exactly one of path or documentId.",
      -        "properties": {
      -          "documentId": {
      -            "description": "Workspace-local document ID.",
      -            "type": "string"
      -          },
      -          "path": {
      -            "description": "Workspace-relative path.",
      -            "type": "string"
      -          },
      -          "project": {
      -            "description": "Disambiguates documents with matching paths or IDs.",
      -            "properties": {
      -              "name": {
      -                "type": "string"
      -              },
      -              "path": {
      -                "description": "Workspace-relative path.",
      -                "type": "string"
      -              },
      -              "projectId": {
      -                "type": "string"
      -              },
      -              "targetFramework": {
      -                "type": "string"
      -              }
      -            },
      -            "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"
      -  }
      -}
    • removedInput schema / properties / symbol / properties / location / type
      Removed value: -"object"
    • addedInput schema / properties / symbol / properties / project / $ref
      Added value: +"#/$defs/project"
    • removedInput schema / properties / symbol / properties / project / properties
      Removed value: -{
      -  "name": {
      -    "type": "string"
      -  },
      -  "path": {
      -    "description": "Workspace-relative path.",
      -    "type": "string"
      -  },
      -  "projectId": {
      -    "type": "string"
      -  },
      -  "targetFramework": {
      -    "type": "string"
      -  }
      -}
    • removedInput schema / properties / symbol / properties / project / type
      Removed value: -[
      -  "object",
      -  "null"
      -]
  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": {
      +            "callees": {
      +              "description": "The returned callees.",
      +              "properties": {
      +                "hasMore": {
      +                  "description": "Whether additional items were available beyond this page.",
      +                  "type": "boolean"
      +                },
      +                "items": {
      +                  "description": "Items returned in this page.",
      +                  "items": {
      +                    "properties": {
      +                      "displayName": {
      +                        "description": "The display name of the symbol.",
      +                        "type": "string"
      +                      },
      +                      "documentationCommentId": {
      +                        "description": "The documentation comment identifier, when available.",
      +                        "type": [
      +                          "string",
      +                          "null"
      +                        ]
      +                      },
      +                      "kind": {
      +                        "description": "The symbol kind.",
      +                        "type": "string"
      +                      },
      +                      "location": {
      +                        "$ref": "#/properties/request/properties/value/properties/source/properties/location",
      +                        "description": "The optional source location of the symbol."
      +                      }
      +                    },
      +                    "required": [
      +                      "displayName",
      +                      "kind"
      +                    ],
      +                    "type": "object"
      +                  },
      +                  "type": [
      +                    "array",
      +                    "null"
      +                  ]
      +                },
      +                "totalCount": {
      +                  "description": "Complete result count, when available without additional expensive work.",
      +                  "type": [
      +                    "integer",
      +                    "null"
      +                  ]
      +                }
      +              },
      +              "type": "object"
      +            },
      +            "source": {
      +              "description": "The queried callable symbol.",
      +              "properties": {
      +                "displayName": {
      +                  "description": "The display name of the symbol.",
      +                  "type": "string"
      +                },
      +                "documentationCommentId": {
      +                  "description": "The documentation comment identifier, when available.",
      +                  "type": [
      +                    "string",
      +                    "null"
      +                  ]
      +                },
      +                "kind": {
      +                  "description": "The symbol kind.",
      +                  "type": "string"
      +                },
      +                "location": {
      +                  "description": "The optional source location of the symbol.",
      +                  "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"
      +                  ]
      +                }
      +              },
      +              "required": [
      +                "displayName",
      +                "kind"
      +              ],
      +              "type": [
      +                "object",
      +                "null"
      +              ]
      +            }
      +          },
      +          "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",
      +        "snapshot"
      +      ],
      +      "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

A4.8/5.0
Behavior5/5

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

Annotations already cover the safety profile (readOnly, idempotent, non-destructive), and the description adds substantial context on top: the tool reads the loaded workspace without executing code, nested lambda/local-function bodies are skipped, and results are bounded by calleesLimit with callees.hasMore signaling truncation. It also clarifies what is NOT returned (call sites, runtime dispatch targets).

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

Conciseness4/5

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

Front-loaded with purpose and the sibling contrast, and the trailing sentences each carry new information about depth, truncation, and output shape. Slight redundancy with the schema's own defaults (maxDepth 3, calleesLimit 100) and the 'provide exactly one of' constraint costs it a point.

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

Completeness5/5

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

For a 7-parameter tool with nested objects, it covers input selection, depth traversal semantics, truncation behavior, and output shape. Since an output schema exists, no further return-value detail is required.

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

Parameters4/5

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

With 100% schema coverage the baseline is 3, but the description adds real semantics: direct calls sit at depth 1, maxDepth defaults to 3, calleesLimit defaults to 100, and hasMore indicates truncation within the requested depth. It restates a couple of schema defaults, which keeps it just short of a 5.

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

Purpose5/5

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

States a specific verb and resource ('Finds distinct method and constructor targets invoked by...') and scopes the input to an executable symbol or region. It explicitly distinguishes itself from the sibling find-callers, so an agent can choose between them without opening either schema.

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

Usage Guidelines5/5

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

'Use this for outgoing calls; use find-callers for incoming call sites' gives an explicit alternative and the condition that selects it. It also explains the direct-vs-indirect default and that exactly one of symbol or location must be supplied, leaving little to inference.

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