createLink

Instructions

Implementation Reference

• src/index.ts:506-581 (handler)

  The createLink tool handler - creates a direct access link for files stored on Pinata IPFS. For public files, it returns a gateway URL. For private files, it generates a temporary download link with configurable expiration time using the Pinata API.

  server.tool(
    "createLink",
    "Create a direct access link for a file stored on Pinata IPFS. For public files returns a gateway URL, for private files generates a temporary download link.",
    {
      cid: z.string().describe("The CID of the file to create a link for"),
      network: z
        .enum(["public", "private"])
        .default("public")
        .describe("Whether the file is on public or private IPFS"),
      expires: z
        .number()
        .default(600)
        .describe(
          "Expiration time in seconds for private download links (default: 600)"
        ),
    },
    async ({ cid, network, expires = 600 }) => {
      try {
        if (!GATEWAY_URL) {
          throw new Error("GATEWAY_URL environment variable is not set");
        }
  
        if (network === "public") {
          const fileUrl = `https://${GATEWAY_URL}/ipfs/${cid}`;
          return {
            content: [
              {
                type: "text",
                text: `✅ Public IPFS link:\n${fileUrl}`,
              },
            ],
          };
        } else {
          const filePath = `https://${GATEWAY_URL}/files/${cid}`;
          const apiUrl = `https://api.pinata.cloud/v3/files/private/download_link`;
          const date = Math.floor(new Date().getTime() / 1000);
  
          const payload = {
            url: filePath,
            expires,
            date,
            method: "GET",
          };
  
          const linkResponse = await fetch(apiUrl, {
            method: "POST",
            headers: getHeaders(),
            body: JSON.stringify(payload),
          });
  
          if (!linkResponse.ok) {
            const errorText = await linkResponse.text();
            throw new Error(
              `Failed to create download link: ${linkResponse.status} ${linkResponse.statusText}. Response: ${errorText}`
            );
          }
  
          const linkData = await linkResponse.json();
          const expirationTime = new Date(
            (date + expires) * 1000
          ).toLocaleString();
  
          return {
            content: [
              {
                type: "text",
                text: `✅ Private IPFS temporary link:\n${linkData.data}\n\nExpires: ${expirationTime} (${expires} seconds from creation)`,
              },
            ],
          };
        }
      } catch (error) {
        return errorResponse(error);
      }
    }
  );

• src/index.ts:509-521 (schema)

  The tool schema definition for createLink - defines the input parameters using Zod validation: cid (required string), network (enum 'public' or 'private', default 'public'), and expires (number, default 600 seconds).

  {
    cid: z.string().describe("The CID of the file to create a link for"),
    network: z
      .enum(["public", "private"])
      .default("public")
      .describe("Whether the file is on public or private IPFS"),
    expires: z
      .number()
      .default(600)
      .describe(
        "Expiration time in seconds for private download links (default: 600)"
      ),
  },