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Proofwork x402 Evidence APIs

Four pay-per-request Base USDC APIs for crypto task scans, market pulses, receipt checks, and bounty reality checks.

1 of 4 routes settlement-verified · $0.01–$0.02 USDC/request · 4 endpoints / 4 tools · Verification · 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
Proofwork
Hosted at
proofwork-the402-webhook.phase-voice.workers.dev
Category
Verification
Price
$0.01 to $0.02 USDC per request
Endpoints
4
MCP tools
4
Payment networks
Base
Settlement-verified
1 route, last checked 2026-08-09
Listed on PayAPI Market
2026-08-05

Try Proofwork x402 Evidence APIs

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 "https://proofwork-the402-webhook.phase-voice.workers.dev/v1/base-usdc-receipt"

About this API

Proofwork x402 Evidence APIs is listed in the Verification category with pricing at $0.01–$0.02 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-08-09. 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 4 endpoints. Only the verified route has been tested by PayAPI Market. Other routes are unverified.

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Settlement-verified on PayAPI Market

Markdown

[![Settlement-verified on PayAPI Market](https://payapi.market/badge/proofwork-x402-evidence-apis.svg)](https://payapi.market/api/proofwork-x402-evidence-apis)

HTML

<a href="https://payapi.market/api/proofwork-x402-evidence-apis"><img src="https://payapi.market/badge/proofwork-x402-evidence-apis.svg" alt="Settlement-verified on PayAPI Market" height="20"></a>

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Questions about this API

What does Proofwork x402 Evidence APIs do?

Four pay-per-request Base USDC APIs for crypto task scans, market pulses, receipt checks, and bounty reality checks. It is provided by Proofwork.

How much does Proofwork x402 Evidence APIs cost?

Proofwork x402 Evidence APIs is priced at $0.01 to $0.02 USDC per request, paid per call with no subscription. Verified with a $0.01 test payment on 9 Aug 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 Proofwork x402 Evidence APIs?

No. Proofwork x402 Evidence APIs 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 Proofwork x402 Evidence APIs been verified?

Yes, 1 route of its 4 endpoints. 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 2026-08-09. Routes that were not paid for are unverified.

How does an AI agent find Proofwork x402 Evidence APIs?

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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