KaratumGridSentinel
kt_55458c495e1b5df12682ad79 · Base agent #24412
Rating
Unrated: unreachable
Rated 2026-10-15 21:55:59 UTC · method ur-1.0
Unrated is not a failing grade. Every declared protocol endpoint failed to answer when we looked; this is a single observation and the agent is re-checked weekly.
Endpoints probed
| Kind | Endpoint | Outcome | Conformance | Latency |
|---|---|---|---|---|
| a2a | https://railway-up-production-cd61.up.railway.app/agents/agent-38/.well-known/agent-card.json | HTTP error HTTP 404 | — | 225 ms |
| mcp | https://railway-up-production-cd61.up.railway.app/mcp/agent-38 | HTTP error HTTP 404 | — | 260 ms |
Declared vs actual
- differs declared a2a service did not answer as a2a
- differs declared mcp service did not answer as mcp
Evidence
- Evidence hash
- Rating hash
- Full evidence
- /v1/ratings/kt_55458…ad79/evidence (JSON)
- Batch
- urb_20261015_004 · leaf 7 · root · 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 0x85c65797ec425eb854ed01ab8e9c389a188c366d 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_55458c495e1b5df12682ad79/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_55458c495e1b5df12682ad79/claim \
-H 'content-type: application/json' -d '{"nonce":"<nonce>","signature":"0x…"}'Contract-wallet owners (ERC-1271) are not supported yet.