MCP-TY

Instructions

Implementation Reference

• src/mcp_ty/server.py:346-374 (handler)

  The 'get_definition' tool implementation in 'src/mcp_ty/server.py' which handles the request, converts 1-based line/column to 0-based for the underlying client, and formats the output.

  @mcp.tool()
  async def get_definition(file_path: str, line: int, column: int) -> str:
      """Go to definition of symbol at position (1-based)."""
      client = _get_client()
  
      path = Path(file_path).resolve()
      if not path.exists():
          return _error(f"File not found: {file_path}")
  
      try:
          await client.open_document(path)
          locations = await client.get_definition(path, line - 1, column - 1)
  
          if not locations:
              return _not_found(f"No definition at {path.name}:{line}:{column}")
  
          defs = []
          for loc in locations:
              def_path = _uri_to_path(loc.uri)
              defs.append({
                  "file": def_path.name,
                  "path": str(def_path),
                  "line": loc.range.start.line + 1,
                  "column": loc.range.start.character + 1
              })
  
          return _ok({"definitions": defs})
      except Exception as e:
          return _error(str(e))