Merge PDFs

Combine several PDFs into one, in order. Body: {"urls":["https://…/a.pdf","https://…/b.pdf"]}. Returns the merged PDF as base64 plus page count and size.

Input

Example output

{
  "pages": 8,
  "bytes": 51234,
  "pdfBase64": "JVBERi0xLjcK…"
}

Try it - see the 402 challenge (free)

curl -i -X POST https://agent402.tools/api/pdf-merge \
  -H "Content-Type: application/json" \
  -d '{"urls":["https://arxiv.org/pdf/1706.03762","https://arxiv.org/pdf/1706.03762"]}'

The response is HTTP 402 Payment Required with exact payment requirements. Any x402 v2 client pays automatically and retries:

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/pdf-merge", {
  method: "POST",
  headers: { "Content-Type": "application/json" },
  body: JSON.stringify({
    "urls": [
      "https://arxiv.org/pdf/1706.03762",
      "https://arxiv.org/pdf/1706.03762"
    ]
  }),
});

Part of these workflows

This tool is one step in a curated multi-tool workflow - agents can fetch the whole sequence as an MCP prompt or call https://agent402.tools/api/skill-packs/{slug}/prompt.

• Document intelligence - Turn any PDF or image URL into structured data - metadata, extracted text, sliced page ranges, OCR for scanned docs, decoded barcodes / QR codes - without falling back to a vision LLM guess. Built for the messy 30% of documents where pdf-to-markdown alone returns nothing useful.

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