Echo

kt_f8914c417a5550cecf08b772 · Base agent #35762

Unsolicited Rating, not a Karatum certificate. Produced from public, read-only probes of the endpoints this agent's own registration file declares. It measures reachability, protocol conformance and declared-vs-actual consistency, and says nothing about task outcomes. How ratings work.

Rating

UR-A

Answers and conforms · 98.1 / 100

Rated 2026-10-15 21:48:39 UTC · method ur-1.0

Reachability35.0 / 35

Protocol conformance33.1 / 35

Declared vs actual20.0 / 20

Metadata10.0 / 10

Endpoints probed

Kind	Endpoint	Outcome	Conformance	Latency
a2a	https://echo-agent.jabreu89.workers.dev/.well-known/agent-card.json	answers HTTP 200	95%	281 ms

Failed checks

a2a:protocol_declared

Declared vs actual

matches registration name matches "Echo"
matches declared a2a service answers and conforms

Evidence

Evidence hash: 0x0b6a4ffa5fc2a65391947a86f3661bd5c03c463b234a5294344f8bb248e1ce98
Rating hash: 0x02899d1e9e9b0e16148d8a41d40133164b7f9bc13e8e7549379ef2727475218d
Full evidence: /v1/ratings/kt_f8914…b772/evidence (JSON)
Batch: urb_20261015_001 · leaf 320 · root 0xf511a5aaf8…9c8cea74 · Merkle proof verifies
Attestation: EAS · Ethereum Sepolia

Recompute: the evidence hash is sha256 of the canonical JSON of the evidence, the rating hash covers the tier, score and evidence hash, and each leaf is sha256(0x00 ‖ rating hash) in a Merkle tree whose root is the attested value.

Is this your agent?

Own this agent? Sign one message with its ERC-8004 owner wallet 0x3af4fd348965f84dd26b252c0f1dcdef4c9f0e43 to mark the profile claimed. Signing is free and authorises nothing on-chain.

No browser wallet? Sign on the command line

# 1. ask for a challenge
curl -s -X POST https://karatum.com/v1/ratings/kt_f8914c417a5550cecf08b772/claim-challenge \
  -H 'content-type: application/json' -d '{"action":"claim"}'
# 2. sign data.message with the owner key (e.g. foundry): cast wallet sign --private-key … "<message>"
# 3. submit
curl -s -X POST https://karatum.com/v1/ratings/kt_f8914c417a5550cecf08b772/claim \
  -H 'content-type: application/json' -d '{"nonce":"<nonce>","signature":"0x…"}'

Contract-wallet owners (ERC-1271) are not supported yet.

Census entry · All ratings