get_content_changelog

Instructions

Implementation Reference

• src/tools.ts:156-186 (schema)

  Tool definition including name, description, Zod schema for parameters (projectId, pagination, optional competitorId, optional category enum), path, and queryParams for 'get_content_changelog'.

  {
    name: "get_content_changelog",
    description:
      "Get detected content changes over time — new URLs, removed URLs, moved URLs. Filter by competitor and/or content category (e.g., blog, docs, tools, landing, caseStudies). Use this instead of comparing full runs when you only need to know what changed. Complements get_content_dashboard which shows the current state. Read-only. Returns paginated JSON array with pagination.hasMore flag.",
    parameters: z.object({
      projectId: objectId("Project ID (from list_projects)"),
      ...pagination,
      competitorId: z
        .string()
        .optional()
        .describe("Filter by competitor ID (from list_competitors)"),
      category: z
        .enum([
          "blog",
          "docs",
          "tools",
          "landing",
          "legal",
          "caseStudies",
          "comparison",
          "integrations",
          "changelog",
          "webinars",
          "other",
        ])
        .optional()
        .describe("Filter by content category"),
    }),
    path: (a) => `/v1/projects/${a.projectId}/content/changelog`,
    queryParams: ["page", "limit", "competitorId", "category"],
  },

• src/index.ts:14-25 (registration)

  Generic tool registration loop — iterates over all tools (including get_content_changelog) and registers them via server.tool().

  // ── Tools ───────────────────────────────────────────────────
  
  for (const tool of tools) {
    server.tool(tool.name, tool.description, tool.parameters.shape, async (args: Record<string, any>) => {
      const path = tool.path(args);
      const query: Record<string, any> = {};
      for (const key of tool.queryParams ?? []) {
        if (args[key] !== undefined) query[key] = args[key];
      }
      return apiGet(path, Object.keys(query).length ? query : undefined);
    });
  }

• src/index.ts:16-24 (handler)

  Handler function for all tools (including get_content_changelog). Dynamically builds the API path from tool.path(args), collects query parameters from tool.queryParams, and calls apiGet() to make the HTTP GET request to the CompetLab API.

  for (const tool of tools) {
    server.tool(tool.name, tool.description, tool.parameters.shape, async (args: Record<string, any>) => {
      const path = tool.path(args);
      const query: Record<string, any> = {};
      for (const key of tool.queryParams ?? []) {
        if (args[key] !== undefined) query[key] = args[key];
      }
      return apiGet(path, Object.keys(query).length ? query : undefined);
    });

• src/api-client.ts:1-58 (helper)

  API client helper — apiGet() function used by all tool handlers. Builds the full URL, adds query params, calls fetch with CL-API-Key header, and returns the response text wrapped in the MCP content format.

  const API_BASE = "https://api.competlab.com";
  
  export async function apiGet(
    path: string,
    query?: Record<string, string | number>,
  ): Promise<{ content: Array<{ type: "text"; text: string }>; isError?: true }> {
    const apiKey = process.env.COMPETLAB_API_KEY;
    if (!apiKey) {
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify({
              error: "api_key_missing",
              message: "COMPETLAB_API_KEY environment variable is not set",
            }),
          },
        ],
        isError: true,
      };
    }
  
    const url = new URL(`${API_BASE}${path}`);
    if (query) {
      for (const [k, v] of Object.entries(query)) {
        if (v !== undefined) url.searchParams.set(k, String(v));
      }
    }
  
    try {
      const res = await fetch(url, {
        headers: { "CL-API-Key": apiKey },
      });
  
      const body = await res.text();
  
      if (!res.ok) {
        return { content: [{ type: "text", text: body }], isError: true };
      }
  
      return { content: [{ type: "text", text: body }] };
    } catch (err) {
      return {
        content: [
          {
            type: "text",
            text: JSON.stringify({
              error: "api_unreachable",
              message:
                err instanceof Error ? err.message : "Failed to reach CompetLab API",
              status: 503,
            }),
          },
        ],
        isError: true,
      };
    }
  }