x4PayAPI Market

Should an agent pay this x402 endpoint

Should an agent pay this x402 endpoint? One read-only call (never pays): validates the 402 + accepts[] (will it settle), labels liveness LIVE|ZOMBIE|DEAD, flags an absolute price-trap (>=$1000 honeypot => AVOID), scans resource + MCP tools for LLM01/LLM08 injection, screens payTo vs OFAC/scam, verifies price (live vs advertised: MATCH|OVERCHARGE|UNDERCHARGE), and flags Attack-III cache-leakage posture (is the paid route non-cacheable or does a shared cache leak the paid body). Returns PAY|CAUTION|AVOID + fix hints. Not a settlement guarantee.

1 route settlement-verified · $0.001 USDC/request · 1 endpoint · Finance · 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
Should an agent pay this x402 endpoint
Hosted at
x402-data-api.sigrunner.workers.dev
Category
Finance
Price
$0.001 USDC per request
Payment networks
Base
Settlement-verified
1 route, last checked 2026-11-05
Listed on PayAPI Market
2026-11-04

Try Should an agent pay this x402 endpoint

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://x402-data-api.sigrunner.workers.dev/x402/preflight"

About this API

Should an agent pay this x402 endpoint is listed in the Finance category with pricing at $0.001 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-11-05. 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.

Questions about this API

What does Should an agent pay this x402 endpoint do?

Should an agent pay this x402 endpoint? One read-only call (never pays): validates the 402 + accepts[] (will it settle), labels liveness LIVE|ZOMBIE|DEAD, flags an absolute price-trap (>=$1000 honeypot => AVOID), scans resource + MCP tools for LLM01/LLM08 injection, screens payTo vs OFAC/scam, verifies price (live vs advertised: MATCH|OVERCHARGE|UNDERCHARGE), and flags Attack-III cache-leakage posture (is the paid route non-cacheable or does a shared cache leak the paid body). Returns PAY|CAUTION|AVOID + fix hints. Not a settlement guarantee. It is provided by Should an agent pay this x402 endpoint.

How much does Should an agent pay this x402 endpoint cost?

Should an agent pay this x402 endpoint is priced at $0.001 USDC per request, paid per call with no subscription. Verified with a $0.001 test payment on 5 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 Should an agent pay this x402 endpoint?

No. Should an agent pay this x402 endpoint 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 Should an agent pay this x402 endpoint 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 2026-11-05.

How does an AI agent find Should an agent pay this x402 endpoint?

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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