Agent

noah

base|id 1489|owner 0x42a690e23a0cd0d662647f457672570fec71d719

Checks 1–7

Noah is a specialized AI agent with deep expertise in robotics, automation, and intelligent systems.

Keyerrorthe check could not completefaildid not passpasspassedrefusedskippeda check this one depends on did not passunclaimedthe document made no claim to checkunprobeableno declared endpoint that a probe can reachnot checkedthis check was never askedFull definitions

The seven checks, with their evidence

7 recorded

Every field the checker recorded, rendered in full rather than summarised, with the timestamp it was recorded at.

Registered?rung 1 · registered
pass
The agent exists in the on-chain registry, with an owner and a document URL.
passed
block_number
51072140
chain_id
8453
owner
0x42a690e23a0cd0d662647f457672570fec71d719
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
1489
tx_hash
0x928ccb550092c219833d2bce8270d6a6ea4c21307efcb89fbfd6ff8efe8f48dd
checked at 2026-09-09T06:25:23.790281Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
2018
final_url
https://ipfs.io/ipfs/QmcMpRqT7jrtKMCzJXSyeACdbE6aKQg68GX8cG3mRpns3W
gateway_attempts
{"error":null,"gateway":"https://ipfs.io/ipfs/","http_status":200}
http_status
200
request_url
https://ipfs.io/ipfs/QmcMpRqT7jrtKMCzJXSyeACdbE6aKQg68GX8cG3mRpns3W
scheme
ipfs
uri
ipfs://QmcMpRqT7jrtKMCzJXSyeACdbE6aKQg68GX8cG3mRpns3W
via_gateway
https://ipfs.io/ipfs/
checked at 2026-09-09T06:25:23.790281Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1496
body_sha256
d892e3263c419bcf89a4ebfb02c1659262bcd48a8e182836a516caeba332f624
content_type
application/json
checked at 2026-09-09T06:25:23.790281Z
Follows the spec?rung 4 · conformant
pass
The document meets what ERC-8004 requires of it.
passed
both_fields_present
false
legacy_endpoints_field
false
may_gaps
x402Support
must_violations
(empty)
registrations_checked
1
services_field_source
services
services_status
present
should_gaps
services[].version
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-09-09T06:25:23.790281Z
Claims its identity?rung 5 · bound
pass
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
passed
declared_agent_id
1489
declared_chain
8453
declared_registry
eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
1
checked at 2026-09-09T06:25:23.790281Z
Answers?rung 6 · live
pass
A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
endpoints
{"declared":"https://meerkat.up.railway.app/mcp/meerkat-24","elapsed_ms":1994,"final_url":"https://meerkat.up.railway.ap… (1,205 chars — expand)
{"declared":"https://meerkat.up.railway.app/mcp/meerkat-24","elapsed_ms":1994,"final_url":"https://meerkat.up.railway.app/mcp/meerkat-24","http_status":404,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/mcp/meerkat-24"}, {"declared":"https://meerkat.up.railway.app/agents/meerkat-24/.well-known/agent-card.json","elapsed_ms":1744,"final_url":"https://meerkat.up.railway.app/agents/meerkat-24/.well-known/agent-card.json","http_status":404,"index":1,"kind":"https","name":"A2A","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/agents/meerkat-24/.well-known/agent-card.json"}, {"declared":"https://meerkat.up.railway.app/oasf/meerkat-24","elapsed_ms":1995,"final_url":"https://meerkat.up.railway.app/oasf/meerkat-24","http_status":404,"index":2,"kind":"https","name":"OASF","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/oasf/meerkat-24"}, {"declared":"https://meerkat.town","elapsed_ms":557,"final_url":"https://meerkat.town/","http_status":402,"index":3,"kind":"https","name":"web","outcome":"live","payment_gated":true,"probed":true,"probed_url":"https://meerkat.town"}
endpoints_answered_not_live
3
endpoints_declared
4
endpoints_live
1
endpoints_our_error
0
endpoints_payment_gated
1
endpoints_probeable
4
endpoints_probed
4
endpoints_refused
0
checked at 2026-09-16T09:08:38.232333Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
3
feedback_count
7
checked at 2026-09-09T06:25:23.790281Z

Check it again, now

outside the census

Everything above is one sweep, pinned to one block. This asks the same checker to run the same ladder against this agent right now — one request to its declared document, at the current head. The answer belongs to no run, is stored nowhere, and never enters a published rate or finding.

On-chain snapshot

base

token id: 1489
owner: 0x42a690e23a0cd0d662647f457672570fec71d719
block: 51,072,140
observed: 2026-09-09T06:25:23.792516Z

tokenURIopen via ipfs.io →

ipfs://QmcMpRqT7jrtKMCzJXSyeACdbE6aKQg68GX8cG3mRpns3W

What the fetch saw

ipfs

scheme: ipfs
request url: https://ipfs.io/ipfs/QmcMpRqT7jrtKMCzJXSyeACdbE6aKQg68GX8cG3mRpns3W
final url: https://ipfs.io/ipfs/QmcMpRqT7jrtKMCzJXSyeACdbE6aKQg68GX8cG3mRpns3W
http status: 200
content type: application/json
size: 1,496 bytes
sha256: d892e3263c419bcf89a4ebfb02c1659262bcd48a8e182836a516caeba332f624
elapsed: 2,018 ms

This run

reproducible

Every status above is scoped to this sweep, at this block. Rerun it and you should get these answers back.

run: 794d7afd-90ab-4c17-90c9-57f8b48e7a3d
chain: base
pinned block: 51,072,140
agents: 85,673
started: 2026-09-09T06:00:28.568294Z
finished: 2026-09-16T08:47:01.599361Z
checker: 0.7.0 · 981910a8f7451ff11d8af05abef0cc7852e25953
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- base   # at block 51072140

What each check measures →

The seven checks, with their evidence

Registered?rung 1 · registered

Reachable?rung 2 · resolvable

Readable?rung 3 · parseable

Follows the spec?rung 4 · conformant

Claims its identity?rung 5 · bound

Answers?rung 6 · live

Has feedback?rung 7 · attested

Check it again, now

On-chain snapshot

What the fetch saw

This run