Export PDF

Instructions

Implementation Reference

• src/tools/content.ts:78-87 (handler)

  Handler for 'pinchtab_pdf' — sends a GET request to '/pdf' via the pinch client, returns the result as text content.

    async () => {
      try {
        const result = await pinch("GET", "/pdf");
        const text = typeof result === "string" ? result : toJson(result);
        return { content: [{ text, type: "text" as const }] };
      } catch (error) {
        return toolError(error);
      }
    },
  );

• src/tools/content.ts:71-87 (registration)

  Registration of the 'pinchtab_pdf' tool via server.registerTool with description and empty input schema.

  server.registerTool(
    "pinchtab_pdf",
    {
      description: "Export the current page as a PDF. Returns the PDF as base64.",
      inputSchema: z.object({}),
      title: "Export PDF",
    },
    async () => {
      try {
        const result = await pinch("GET", "/pdf");
        const text = typeof result === "string" ? result : toJson(result);
        return { content: [{ text, type: "text" as const }] };
      } catch (error) {
        return toolError(error);
      }
    },
  );

• src/tools/content.ts:73-76 (schema)

  Schema/definition for 'pinchtab_pdf' — takes no input parameters, returns base64 PDF data.

  {
    description: "Export the current page as a PDF. Returns the PDF as base64.",
    inputSchema: z.object({}),
    title: "Export PDF",

• src/pinchtab/client.ts:6-49 (helper)

  The 'pinch' helper function called by the handler — makes HTTP requests to the PinchTab server; the pdf handler calls pinch('GET', '/pdf').

  export async function pinch(
    method: string,
    path: string,
    body?: Record<string, unknown>,
  ): Promise<unknown> {
    if (!(await isPinchtabRunning())) {
      await ensurePinchtabRunning();
    }
  
    const headers: Record<string, string> = {
      "Content-Type": "application/json",
    };
    if (PINCHTAB_TOKEN) {
      headers["Authorization"] = `Bearer ${PINCHTAB_TOKEN}`;
    }
  
    const url = `${PINCHTAB_URL}${path}`;
  
    let res: Response;
    try {
      res = await fetch(url, {
        body: body ? JSON.stringify(body) : undefined,
        headers,
        method,
        signal: AbortSignal.timeout(REQUEST_TIMEOUT_MS),
      });
    } catch (error) {
      if (error instanceof DOMException && error.name === "TimeoutError") {
        throw new Error(`PinchTab ${method} ${path} timed out after ${REQUEST_TIMEOUT_MS / 1000}s`);
      }
      throw error;
    }
  
    if (!res.ok) {
      const text = await res.text();
      throw new Error(`PinchTab ${method} ${path} → ${res.status}: ${text}`);
    }
  
    const contentType = (res.headers.get("content-type") ?? "").split(";")[0].toLowerCase().trim();
    if (contentType === "application/json") {
      return res.json();
    }
    return res.text();
  }

• src/utils.ts:23-30 (helper)

  The toolError helper used in the catch block of the pdf handler to format errors as MCP tool error responses.

  export function toolError(error: unknown): ToolResult {
    const message = error instanceof Error ? error.message : String(error);
    return {
      content: [{ text: message, type: "text" as const }],
      isError: true,
    };
  }