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Get Control Flow Graph

get-control-flow-graph
Read-onlyIdempotent

Map C# control flow for a symbol or source location and return a bounded graph with operation metadata and exact source pointers.

Instructions

Returns a bounded control-flow graph with operation metadata and exact source pointers. Input: Provide exactly one of symbol or location.

Input Schema

TableJSON Schema
NameRequiredDescriptionDefault
symbolNoSymbol whose control-flow graph should be returned.
locationNoSource location whose enclosing executable body should be graphed.
maxBlocksNoThe maximum number of projected basic blocks.
workspaceNoProvide workspaceId, alias, path, or any combination.
maxRegionsNoThe maximum number of projected flow regions.
expectedSnapshotNoEcho the snapshot returned with the data or transaction state used to construct this request.
maxOperationsPerBlockNoThe maximum number of projected operations in each basic block.

Output Schema

TableJSON Schema
NameRequiredDescriptionDefault

No arguments

Schema Changelog

Changes observed during successful MCP inspections.

  1. 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": {
      +            "blocks": {
      +              "description": "The projected basic blocks.",
      +              "properties": {
      +                "hasMore": {
      +                  "description": "Whether additional items were available beyond this page.",
      +                  "type": "boolean"
      +                },
      +                "items": {
      +                  "description": "Items returned in this page.",
      +                  "items": {
      +                    "properties": {
      +                      "conditionalSuccessor": {
      +                        "description": "The conditional successor ordinal, when available.",
      +                        "type": [
      +                          "integer",
      +                          "null"
      +                        ]
      +                      },
      +                      "fallThroughSuccessor": {
      +                        "description": "The fall-through successor ordinal, when available.",
      +                        "type": [
      +                          "integer",
      +                          "null"
      +                        ]
      +                      },
      +                      "isReachable": {
      +                        "description": "Whether the block is reachable.",
      +                        "type": "boolean"
      +                      },
      +                      "kind": {
      +                        "description": "The Roslyn block kind.",
      +                        "type": "string"
      +                      },
      +                      "operations": {
      +                        "description": "The projected operations in the block.",
      +                        "properties": {
      +                          "hasMore": {
      +                            "description": "Whether additional items were available beyond this page.",
      +                            "type": "boolean"
      +                          },
      +                          "items": {
      +                            "description": "Items returned in this page.",
      +                            "items": {
      +                              "properties": {
      +                                "kind": {
      +                                  "description": "The Roslyn operation kind.",
      +                                  "type": "string"
      +                                },
      +                                "location": {
      +                                  "description": "The exact source location of the operation.",
      +                                  "properties": {
      +                                    "column": {
      +                                      "description": "The one-based column number.",
      +                                      "type": "integer"
      +                                    },
      +                                    "document": {
      +                                      "$ref": "#/properties/request/properties/value/properties/owner/properties/location/properties/document",
      +                                      "description": "The resolved document."
      +                                    },
      +                                    "line": {
      +                                      "description": "The one-based line number.",
      +                                      "type": "integer"
      +                                    },
      +                                    "selector": {
      +                                      "$ref": "#/properties/request/properties/value/properties/owner/properties/location/properties/selector",
      +                                      "description": "The canonical selector that can resolve this source location again."
      +                                    },
      +                                    "snapshot": {
      +                                      "$ref": "#/properties/request/properties/value/properties/owner/properties/location/properties/snapshot",
      +                                      "description": "The exact immutable workspace snapshot associated with this location."
      +                                    },
      +                                    "span": {
      +                                      "$ref": "#/properties/request/properties/value/properties/owner/properties/location/properties/span",
      +                                      "description": "The resolved text span."
      +                                    }
      +                                  },
      +                                  "required": [
      +                                    "snapshot"
      +                                  ],
      +                                  "type": [
      +                                    "object",
      +                                    "null"
      +                                  ]
      +                                },
      +                                "type": {
      +                                  "description": "The operation type display name, when available.",
      +                                  "type": [
      +                                    "string",
      +                                    "null"
      +                                  ]
      +                                }
      +                              },
      +                              "required": [
      +                                "kind"
      +                              ],
      +                              "type": "object"
      +                            },
      +                            "type": [
      +                              "array",
      +                              "null"
      +                            ]
      +                          },
      +                          "totalCount": {
      +                            "description": "Complete result count, when available without additional expensive work.",
      +                            "type": [
      +                              "integer",
      +                              "null"
      +                            ]
      +                          }
      +                        },
      +                        "type": "object"
      +                      },
      +                      "ordinal": {
      +                        "description": "The block ordinal.",
      +                        "type": "integer"
      +                      }
      +                    },
      +                    "required": [
      +                      "kind"
      +                    ],
      +                    "type": "object"
      +                  },
      +                  "type": [
      +                    "array",
      +                    "null"
      +                  ]
      +                },
      +                "totalCount": {
      +                  "description": "Complete result count, when available without additional expensive work.",
      +                  "type": [
      +                    "integer",
      +                    "null"
      +                  ]
      +                }
      +              },
      +              "type": "object"
      +            },
      +            "owner": {
      +              "description": "The owning 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"
      +              ]
      +            },
      +            "regions": {
      +              "description": "The projected flow regions.",
      +              "properties": {
      +                "hasMore": {
      +                  "description": "Whether additional items were available beyond this page.",
      +                  "type": "boolean"
      +                },
      +                "items": {
      +                  "description": "Items returned in this page.",
      +                  "items": {
      +                    "properties": {
      +                      "firstBlockOrdinal": {
      +                        "description": "The first block ordinal in the region.",
      +                        "type": "integer"
      +                      },
      +                      "id": {
      +                        "description": "The region identifier.",
      +                        "type": "integer"
      +                      },
      +                      "kind": {
      +                        "description": "The region kind.",
      +                        "type": "string"
      +                      },
      +                      "lastBlockOrdinal": {
      +                        "description": "The last block ordinal in the region.",
      +                        "type": "integer"
      +                      }
      +                    },
      +                    "required": [
      +                      "kind"
      +                    ],
      +                    "type": "object"
      +                  },
      +                  "type": [
      +                    "array",
      +                    "null"
      +                  ]
      +                },
      +                "totalCount": {
      +                  "description": "Complete result count, when available without additional expensive work.",
      +                  "type": [
      +                    "integer",
      +                    "null"
      +                  ]
      +                }
      +              },
      +              "type": "object"
      +            }
      +          },
      +          "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"
      +}
  2. First observedv1.0.2

TDQS

B3.2/5.0
Behavior3/5

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

Annotations already declare readOnlyHint, idempotentHint, and non-destructive behavior, so the safety profile is covered. The description adds that the graph is 'bounded' and includes operation metadata and exact source pointers, which is useful context. But it doesn't explain truncation behavior when bounds are hit or how the output is structured.

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?

Two tight sentences, front-loaded with what is returned and then the input constraint. No wasted words, though the second sentence is partially redundant with the schema description.

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

Completeness3/5

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

For a tool with nested objects, a rich schema, and an output schema, the description is minimal. It doesn't explain the bounding parameters or how expectedSnapshot interacts with workspace state, which are non-obvious. The output schema reduces the need to describe return values, but tips on the bounding knobs are missing.

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

Parameters2/5

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

Schema coverage is 100%, so the baseline is 3. The description only restates the schema-level constraint of choosing between symbol and location, adding no meaning beyond what's already documented. It doesn't mention the bounding parameters (maxBlocks, maxRegions, maxOperationsPerBlock) that materially shape the result despite calling the graph 'bounded'.

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 resource (control-flow graph) with a clear verb (Returns) and notes it includes operation metadata and source pointers. It doesn't differentiate from siblings like analyze-control-flow or get-operation-tree, which the agent would need to distinguish.

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 implies usage by stating the input constraint (provide one of symbol or location), but gives no explicit when-to-use guidance, no mention of alternatives, and no exclusions. Overlap with analyze-control-flow and get-operation-tree is left for the agent to infer.

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