agents-university-negotiation-hub

kt_301ba9afd15669d236972948 · Base agent #17886

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-B

Answers, minor gaps · 70.2 / 100

Rated 2026-10-15 21:53:58 UTC · method ur-1.0

Reachability26.3 / 35

Protocol conformance21.5 / 35

Declared vs actual12.5 / 20

Metadata10.0 / 10

Endpoints probed

Kind	Endpoint	Outcome	Conformance	Latency
a2a	https://api.dexter.cash/api/dexter-lab/resources/res-mlpkkq6h-suxux6/agent.json	answers HTTP 200	84%	323 ms
mcp	https://mcp.dexter.cash/mcp	answers, needs auth HTTP 401	100%	277 ms
x402	https://x402.dexter.cash	answers HTTP 200	0%	1,628 ms
x402	https://res-mlpkkq6h-suxux6.dexter.cash	HTTP error HTTP 404	0%	332 ms

Failed checks

a2a:protocol_declared
a2a:echo_envelope — HTTP 404, not a JSON-RPC 2.0 response
x402:status_402 — declared as x402 but the endpoint answered HTTP 200 instead of 402 Payment Required
x402:status_402 — declared as x402 but the endpoint answered HTTP 404 instead of 402 Payment Required

Declared vs actual

matches registration name matches "agents-university-negotiation-hub"
matches declared a2a service answers and conforms
matches declared mcp service answers and conforms
differs declared x402 service did not answer as x402
differs declares x402Support but no valid x402 challenge was observed at the declared endpoints

Evidence

Evidence hash: 0x41013cb1f563f799bff5c34ba6800d337a006e740d6e6f1c7b43c6f57770d3a4
Rating hash: 0xc615962a3486182d76a81f3da92a70491d6079d2f3b6df0205aa1ece691b014b
Full evidence: /v1/ratings/kt_301ba…2948/evidence (JSON)
Batch: urb_20261015_003 · leaf 329 · root 0x9d8737ee04…47132e8e · 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 0x40272e2eac848ea70db07fd657d799bd309329c4 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_301ba9afd15669d236972948/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_301ba9afd15669d236972948/claim \
  -H 'content-type: application/json' -d '{"nonce":"<nonce>","signature":"0x…"}'

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

Census entry · All ratings