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a2a-agent
Onchain reputation oracle for AI agents on Base. Vet any agent before paying it via x402. Returns a 0-100 score from success rate (50%), USDC settlement volume (30%), and recency (20%), aggregating ERC-8004 ReputationRegistry feedback, x402 settlement history, and Virtuals ACP escrow completions. Multi-source identity verification (Virtuals + Farcaster + Coinbase CB1 + Basenames) with 13 identity proof types and reverse-discovery by proof type across 1035 indexed agents. Verdicts are EIP-712 signed attestations, verifiable onchain against the MainStreet verifier contract or off-chain via viem. ERC-8004 agentId 53953.
Category
a2a-agent
Chains
base
Price
$0.0500 USDC / call
Quality grade
How grading works
D
39.6 / 100
Availability
18.0 / 40
Reachable but returned HTTP 403
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
1.6 / 40
0 distinct payers, 2 USDC transfers in the last 30 days
Owner verified
0.0 / 3
Nobody has claimed this listing yet
Endpoint last checked 8 h ago.
On-chain activity last read 12 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://avisradar-production.up.railway.app/api/agent # expect HTTP 402 Payment Required (about 0.05 USDC/call)/.well-known/x402.json
https://avisradar-production.up.railway.app/.well-known/x402
Listed in
Directories this entry was found in.
a2a