Limitless MCP

Instructions

Implementation Reference

• mcp-server/src/index.ts:1055-1073 (handler)

  The handler function that executes the GraphQL introspection query against the selected subgraph.

  async ({ subgraph }) => {
    try {
      const introspectionQuery = `{
        __schema {
          types {
            name kind
            fields { name type { name kind ofType { name kind } } }
          }
        }
      }`;
      const data =
        subgraph === "simple"
          ? await querySimple(introspectionQuery)
          : await queryNegRisk(introspectionQuery);
      return textResult(data);
    } catch (e) {
      return errorResult(e);
    }
  }

• mcp-server/src/index.ts:1044-1074 (registration)

  The MCP tool registration for 'get_subgraph_schema', including its description and input schema.

  server.registerTool(
    "get_subgraph_schema",
    {
      description:
        "Get the GraphQL schema for a Limitless subgraph via introspection.",
      inputSchema: {
        subgraph: z
          .enum(["simple", "negrisk"])
          .describe("Which subgraph to introspect"),
      },
    },
    async ({ subgraph }) => {
      try {
        const introspectionQuery = `{
          __schema {
            types {
              name kind
              fields { name type { name kind ofType { name kind } } }
            }
          }
        }`;
        const data =
          subgraph === "simple"
            ? await querySimple(introspectionQuery)
            : await queryNegRisk(introspectionQuery);
        return textResult(data);
      } catch (e) {
        return errorResult(e);
      }
    }
  );