getSpecCollections

Instructions

Implementation Reference

• tools/postman_tools.py:1298-1341 (handler)

  GetSpecCollectionsTool class - the handler that implements the 'getSpecCollections' tool logic. Makes a GET request to /apis/{specId}/collections with optional pagination params.

  class GetSpecCollectionsTool(ToolHandler):
      """Get spec's generated collections"""
      
      def __init__(self):
          super().__init__("getSpecCollections")
      
      def get_tool_description(self) -> Tool:
          return Tool(
              name=self.name,
              description="Gets all collections generated from an API spec.",
              inputSchema={
                  "type": "object",
                  "properties": {
                      "specId": {
                          "type": "string",
                          "description": "Spec ID"
                      },
                      "elementType": {
                          "type": "string",
                          "description": "Collection element type"
                      },
                      "cursor": {
                          "type": "string",
                          "description": "Pagination cursor"
                      },
                      "limit": {
                          "type": "integer",
                          "description": "Max rows"
                      }
                  },
                  "required": ["specId", "elementType"]
              },
          )
      
      async def run_tool(self, args: dict) -> list[TextContent]:
          spec_id = args["specId"]
          params = {"elementType": args["elementType"]}
          if args.get("cursor"):
              params["cursor"] = args["cursor"]
          if args.get("limit"):
              params["limit"] = args["limit"]
          
          result = await postman_api_call("GET", f"/apis/{spec_id}/collections", params=params)
          return [TextContent(type="text", text=json.dumps(result, indent=2))]

• tools/postman_tools.py:1298-1330 (schema)

  Input schema for getSpecCollections tool, requiring specId and elementType, with optional cursor and limit for pagination.

  class GetSpecCollectionsTool(ToolHandler):
      """Get spec's generated collections"""
      
      def __init__(self):
          super().__init__("getSpecCollections")
      
      def get_tool_description(self) -> Tool:
          return Tool(
              name=self.name,
              description="Gets all collections generated from an API spec.",
              inputSchema={
                  "type": "object",
                  "properties": {
                      "specId": {
                          "type": "string",
                          "description": "Spec ID"
                      },
                      "elementType": {
                          "type": "string",
                          "description": "Collection element type"
                      },
                      "cursor": {
                          "type": "string",
                          "description": "Pagination cursor"
                      },
                      "limit": {
                          "type": "integer",
                          "description": "Max rows"
                      }
                  },
                  "required": ["specId", "elementType"]
              },
          )

• tools/postman_tools.py:1876-1877 (registration)

  Registration of GetSpecCollectionsTool() in the register_all_tools() function, making it available as an MCP tool.

  GenerateCollectionTool(),
  GetSpecCollectionsTool(),

• tools/postman_tools.py:21-67 (helper)

  Helper function postman_api_call used by GetSpecCollectionsTool.run_tool() to make the actual GET request to the Postman API.

  async def postman_api_call(
      method: str,
      endpoint: str,
      body: dict | None = None,
      params: dict | None = None,
      headers: dict | None = None
  ) -> dict:
      """Make an API call to Postman API"""
      if not POSTMAN_API_KEY:
          raise RuntimeError("POSTMAN_API_KEY environment variable is not set")
      
      url = f"{POSTMAN_BASE_URL}{endpoint}"
      
      # Prepare headers
      request_headers = {
          "X-Api-Key": POSTMAN_API_KEY,
          "Content-Type": "application/json",
      }
      if headers:
          request_headers.update(headers)
      
      async with httpx.AsyncClient(timeout=30.0) as client:
          try:
              response = await client.request(
                  method=method,
                  url=url,
                  json=body,
                  params=params,
                  headers=request_headers
              )
              response.raise_for_status()
              
              if response.status_code == 204:
                  return {"success": True, "message": "Operation completed successfully"}
              
              return response.json() if response.content else {"success": True}
          
          except httpx.HTTPStatusError as e:
              error_detail = e.response.text
              try:
                  error_json = e.response.json()
                  error_detail = json.dumps(error_json, indent=2)
              except:
                  pass
              raise RuntimeError(f"Postman API error ({e.response.status_code}): {error_detail}")
          except Exception as e:
              raise RuntimeError(f"Request failed: {str(e)}")