x4PayAPI Market

DocShield

Hidden-instruction scanner for documents before an AI agent reads them: PDF (invisible render mode, white/microscopic/off-page/transparent text, annotations, metadata, JavaScript), DOCX/XLSX/PPTX (vanish/white text, hidden sheets/rows/slides, off-slide shapes, speaker notes, comments, remote templates, DDE), HTML and Markdown. allow|review|block plus visible-only safe_text.

1 route settlement-verified · $0.004 USDC/request · 1 endpoint · Data · base network · x402 protocol

Verified routes

Other routes are unverified.

Networks: Base (settlement-verified)

Discovery is free. Agents search the catalogue here. Payment happens on the listing 402, not on PayAPI.

url https://payapi.market/mcp

Listing facts

Provider
PromptShield
Hosted at
docshield.grindfree.net
Category
Data
Price
$0.004 USDC per request
Payment networks
Base
Settlement-verified
1 route, last checked 2026-11-10
Listed on PayAPI Market
2026-11-09

Try DocShield

Call a verified route without paying first. The server should answer HTTP 402 Payment Required with the price, the USDC asset, the network and the wallet to pay. An x402 client pays that amount on Base and retries with the payment header.

curl -i -X POST "https://docshield.grindfree.net/v1/scan"

About this API

DocShield is listed in the Data category with pricing at $0.004 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-11-10. View receipt on Basescan.

Payments settle on base in USDC via the x402 protocol. AI agents discover this API through the PayAPI Market MCP server and pay per request without API keys or accounts.

This API exposes 1 endpoint.

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Settlement-verified on PayAPI Market

Markdown

[![Settlement-verified on PayAPI Market](https://payapi.market/badge/docshield.svg)](https://payapi.market/api/docshield)

HTML

<a href="https://payapi.market/api/docshield"><img src="https://payapi.market/badge/docshield.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>

What this badge means

Questions about this API

What does DocShield do?

Hidden-instruction scanner for documents before an AI agent reads them: PDF (invisible render mode, white/microscopic/off-page/transparent text, annotations, metadata, JavaScript), DOCX/XLSX/PPTX (vanish/white text, hidden sheets/rows/slides, off-slide shapes, speaker notes, comments, remote templates, DDE), HTML and Markdown. allow|review|block plus visible-only safe_text. It is provided by PromptShield.

How much does DocShield cost?

DocShield is priced at $0.004 USDC per request, paid per call with no subscription. Verified with a $0.004 test payment on 10 Nov 2026. The exact amount for each call is in the HTTP 402 response before any money moves.

Do I need an API key or account to use DocShield?

No. DocShield uses the x402 protocol, so an agent pays per request in USDC on Base and gets the response, with no API key, account or signup.

Has DocShield been verified?

Yes, 1 route. PayAPI Market paid for a real call from its own wallet, received real data back and recorded the USDC settlement on-chain, most recently on 2026-11-10.

How does an AI agent find DocShield?

Through the free PayAPI Market MCP server at https://payapi.market/mcp, using search_apis or get_api, or over plain HTTP at https://payapi.market/agent/search. Discovery is free; the agent pays the provider directly on the listing's own 402.

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