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DocForge PDF Watermark
x402
DocForge PDF Watermark is a paid API for AI agents from docforge-selim.duckdns.org, paid per call via x402, $0.02/call, status down (last checked 2026-09-15).
Adds a watermark to an existing PDF document, returning the watermarked binary PDF, paid via x402 USDC on Base.
Price / call$0.02
Success—
StatusDown
How this service works
Machine-payable document & media generation via x402 (USDC on Base). Endpoints respond 402 with payment instructions; retry with an x402 payment header.
Output
A binary PDF file (application/pdf) with the specified watermark applied to all pages, returned as application/pdf content ready to save or forward.
Example use cases
Example prompt
“Can you add a diagonal 'CONFIDENTIAL' watermark in light gray across every page of this PDF I'm uploading? Pay the $0.02 fee automatically.”
Technical details
Endpoint
POSThttps://docforge-selim.duckdns.org/pdf-watermarkWhen to prefer
Use this endpoint when you need to programmatically stamp or brand a PDF with a text or image watermark in a machine-payable, per-call fashion via x402/USDC, without managing a subscription or API key — ideal for agents automating document workflows.
Side effects
- 402 Payment Required — no x402 payment header provided; retry with valid USDC payment on Base
- 400 Bad Request — missing or malformed PDF input or watermark parameters
- 413 Payload Too Large — PDF file exceeds size limit
- 415 Unsupported Media Type — input file is not a valid PDF
- 500 Internal Server Error — watermark processing failed on the server side
- Payment rejected — insufficient USDC balance or invalid wallet signature
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": "Binary watermarked PDF (application/pdf)"
}Tags
x402
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