Query Economic Releases

Instructions

Implementation Reference

• src/tools/econ.ts:124-151 (handler)

  The handler function for the 'query_releases' tool. It calls apiGet('/api/v1/econ/releases') with days, category, and limit parameters, processes the response, and returns formated text content with a summary and JSON data.

  async ({ days, category, limit }) => {
    const res = await apiGet<EconQueryResponse>("/api/v1/econ/releases", {
      days: days ?? 14,
      category,
      limit: limit ?? 25,
    });
  
    if (!res.ok) {
      return {
        content: [
          {
            type: "text" as const,
            text: `API error (${res.status}): ${JSON.stringify(res.data)}`,
          },
        ],
        isError: true,
      };
    }
  
    const { count, data } = res.data;
    const warn = stalenessWarning(res);
    const summary = `${warn}Found ${count} upcoming release(s).`;
    const json = JSON.stringify(data, null, 2);
  
    return {
      content: [{ type: "text" as const, text: `${summary}\n\n${json}` }],
    };
  },

• src/tools/econ.ts:103-122 (schema)

  The input schema for 'query_releases' tool, defining optional parameters: days (int 1-90), category (string), and limit (int 1-100).

  inputSchema: {
    days: z
      .number()
      .int()
      .min(1)
      .max(90)
      .optional()
      .describe("Number of days to look ahead (default 14)"),
    category: z
      .string()
      .optional()
      .describe("Category filter (e.g. inflation, employment)"),
    limit: z
      .number()
      .int()
      .min(1)
      .max(100)
      .optional()
      .describe("Maximum results (default 25)"),
  },

• src/tools/econ.ts:95-152 (registration)

  The registration call for the 'query_releases' tool via server.registerTool(), with its title, description, input schema, and handler.

  server.registerTool(
    "query_releases",
    {
      title: "Query Economic Releases",
      description:
        "Get upcoming economic data releases. Shows release dates, expected impact, " +
        "prior values, and consensus forecasts. " +
        "Cost: $0.01 per query. Source: FRED, BLS, BEA.",
      inputSchema: {
        days: z
          .number()
          .int()
          .min(1)
          .max(90)
          .optional()
          .describe("Number of days to look ahead (default 14)"),
        category: z
          .string()
          .optional()
          .describe("Category filter (e.g. inflation, employment)"),
        limit: z
          .number()
          .int()
          .min(1)
          .max(100)
          .optional()
          .describe("Maximum results (default 25)"),
      },
    },
    async ({ days, category, limit }) => {
      const res = await apiGet<EconQueryResponse>("/api/v1/econ/releases", {
        days: days ?? 14,
        category,
        limit: limit ?? 25,
      });
  
      if (!res.ok) {
        return {
          content: [
            {
              type: "text" as const,
              text: `API error (${res.status}): ${JSON.stringify(res.data)}`,
            },
          ],
          isError: true,
        };
      }
  
      const { count, data } = res.data;
      const warn = stalenessWarning(res);
      const summary = `${warn}Found ${count} upcoming release(s).`;
      const json = JSON.stringify(data, null, 2);
  
      return {
        content: [{ type: "text" as const, text: `${summary}\n\n${json}` }],
      };
    },
  );

• src/client.ts:44-76 (helper)

  The apiGet helper function used by the handler to make HTTP GET requests to the Verilex API.

  export async function apiGet<T = unknown>(
    path: string,
    params?: Record<string, string | number | undefined>,
  ): Promise<ApiResponse<T>> {
    const url = buildUrl(path, params);
  
    const headers: Record<string, string> = {
      Accept: "application/json",
      "User-Agent": "verilex-mcp-server/0.1.0",
    };
  
    // Forward x402 payment token if present in env (for paid endpoints)
    const paymentToken = process.env.VERILEX_PAYMENT_TOKEN;
    if (paymentToken) {
      headers["X-Payment-Token"] = paymentToken;
    }
  
    const res = await fetch(url, { headers });
    const data = (await res.json()) as T;
  
    const stale = res.headers.get("X-Data-Stale");
    const lastUpdated = res.headers.get("X-Data-Last-Updated");
    const ageSeconds = res.headers.get("X-Data-Age-Seconds");
  
    return {
      ok: res.ok,
      status: res.status,
      data,
      stale: stale === "true",
      lastUpdated: lastUpdated ?? undefined,
      ageSeconds: ageSeconds ? Number(ageSeconds) : undefined,
    };
  }

• src/client.ts:35-41 (helper)

  The stalenessWarning helper function used to generate stale data warnings in the response.

  export function stalenessWarning(res: ApiResponse): string {
    if (!res.stale) return "";
    const parts = ["[STALE DATA]"];
    if (res.lastUpdated) parts.push(`Last updated: ${res.lastUpdated}`);
    if (res.ageSeconds != null) parts.push(`Age: ${res.ageSeconds}s`);
    return parts.join(" ") + "\n\n";
  }