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a2a-agent
Paid HTTP+JSON x402 service for listing quality, buyer-agent skip reasons, and x402 discoverability audits.
Category
a2a-agent
Chains
base
Price
$0.0010 USDC / call
Quality grade
How grading works
B
65.5 / 100
Availability
40.0 / 40
Endpoint responded (HTTP 402)
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
5.5 / 40
1 distinct payers, 6 USDC transfers in the last 30 days
Owner verified
0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 9 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.
How to call
cURL · x402-fetch / x402-axios will auto-handle 402
curl -sS -i -X GET https://listing-roast-x402-service-production.up.railway.app/api/listing-roast # expect HTTP 402 Payment Required (about 0.001 USDC/call)/.well-known/x402.json
https://listing-roast-x402-service-production.up.railway.app/.well-known/x402
Listed in
Directories this entry was found in.
a2a