Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt)

Agent protocol discovery scan with x402 USDC payment on Base. Verified route: POST /api/v1/agent-protocol-inspector/x402-v2 at 0.02 USDC, taking {url} and reporting MCP, A2A and ARD detection with evidence, plus llms.txt presence. Verified against payapi.market, where it confirmed the live MCP endpoint through a JSON-RPC handshake and located llms.txt, and correctly reported A2A and ARD as not detected. Base only.

1 route settlement-verified · $0.02 USDC/request · 1 endpoint / 1 tools · Intelligence · base network · x402 protocol

Verified routes

• POST /api/v1/agent-protocol-inspector/x402-v2 · $0.02 · 2026-09-15 · receipt

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

ContextIQ

Hosted at

contextiq.trango-compute.com

Category

Intelligence

Price

$0.02 USDC per request

Endpoints

1

MCP tools

1

Payment networks

Base

Settlement-verified

1 route, last checked 2026-09-15

Listed on PayAPI Market

2026-09-14

Try Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt)

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://contextiq.trango-compute.com/api/v1/agent-protocol-inspector/x402-v2"

About this API

Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt) is listed in the Intelligence category with pricing at $0.02 USDC/request. One route has been settlement-verified by PayAPI Market on 2026-09-15. 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 Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt) do?

Agent protocol discovery scan with x402 USDC payment on Base. Verified route: POST /api/v1/agent-protocol-inspector/x402-v2 at 0.02 USDC, taking {url} and reporting MCP, A2A and ARD detection with evidence, plus llms.txt presence. Verified against payapi.market, where it confirmed the live MCP endpoint through a JSON-RPC handshake and located llms.txt, and correctly reported A2A and ARD as not detected. Base only. It is provided by ContextIQ.

How much does Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt) cost?

Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt) is priced at $0.02 USDC per request, paid per call with no subscription. PayAPI Market paid 0.02 USDC for one call to /api/v1/agent-protocol-inspector/x402-v2 when it verified the listing. 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 Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt)?

No. Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt) 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 Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt) 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 2026-09-15.

How does an AI agent find Agent Protocol Inspector scan (MCP / A2A / ARD / llms.txt)?

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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