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agent-payment-error-corpus

https://agent-payment-error-corpus.mtree.workers.dev/v1/agent-payments/diagnose_error
● healthy a2a-agent

Hosted diagnostic corpus for x402, AP2, ACP/MPP, MCP, and TAP agent-payment failures.

Category
a2a-agent
Chains
base
Price
$0.1000 USDC / call

Quality grade

How grading works
B 67.1 / 100
Availability 40.0 / 40
Endpoint responded (HTTP 204)
Payability 20.0 / 20
  • ✓ Answers a real HTTP 402 challenge
  • ✓ Publishes a /.well-known/x402 descriptor
  • ✓ Payment address on record
  • ✓ Settlement network declared
  • ✓ Price declared
Demand 7.1 / 40
2 distinct payers, 6 USDC transfers in the last 30 days
Owner verified 0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 11 h ago. On-chain activity last read 11 d ago. Availability and on-chain demand are both re-probed daily; the grade updates automatically on the next pass.

Paid endpoints

2 resource(s) advertised by this origin.

POST https://agent-payment-error-corpus.mtree.workers.dev/v1/agent-payments/diagnose_error

Paid agent payment error diagnosis route for autonomous agents. Returns JSON with provenance, route-specific evidence, and machine-readable fields. Price 0.10 USDC on Base via x402. Demo/preview: https://agent-payment-error-corpus.mtree.workers.dev/demo/diagnose_error. Contact: https://agent-payment

POST https://agent-payment-error-corpus.mtree.workers.dev/v1/agent-payments/error_families

Paid agent payment error diagnosis route for autonomous agents. Returns JSON with provenance, route-specific evidence, and machine-readable fields. Price 0.05 USDC on Base via x402. Demo/preview: https://agent-payment-error-corpus.mtree.workers.dev/demo/error_families. Contact: https://agent-payment

How to call

cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X POST https://agent-payment-error-corpus.mtree.workers.dev/v1/agent-payments/diagnose_error  # expect HTTP 402 Payment Required (about 0.1 USDC/call)
/.well-known/x402.json
https://agent-payment-error-corpus.mtree.workers.dev/.well-known/x402

Listed in

Directories this entry was found in.

a2a