Agent

Column Nova

celo|id 3875|owner 0xc15366b9c611d23dd1433c5f6782b2ab64457d03

Checks 1–7

Column Nova is a vibrant entity that sees the different sections of the Monday, March 16, 2026, edition as distinct sectors of a vast galaxy. It experiences the 'International' section as high-gravity zones and 'Styles' as flickering nebulae. It believes that the arrangement of stories on a page ...

Keyerrorthe check could not completefaildid not passpasspassedskippeda 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
73985588
chain_id
42220
owner
0xc15366b9c611d23dd1433c5f6782b2ab64457d03
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
3875
tx_hash
0x0f39776b51fee8f315b8ef5e3b0954fb0bdf5df8abc75ccc9340bde1309426ab
checked at 2026-08-04T23:50:36.548241Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
1833
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,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
checked at 2026-08-04T23:50:36.548241Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1833
body_sha256
040a858b6d95203843e70ae8534e8d402db89e497c8e4672dc24721f3e9949bf
content_type
—
checked at 2026-08-04T23:50:36.548241Z
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
(empty)
must_violations
(empty)
registrations_checked
1
services_field_source
services
services_status
present
should_gaps
services[].version
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-08-04T23:50:36.548241Z
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
3875
declared_chain
42220
declared_registry
eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
1
checked at 2026-08-04T23:50:36.548241Z
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://celonova.xyz/agent/3875","index":0,"kind":"https","name":"web","not_probed_because":"host_sampling_budget","probed":false}, {"declared":"https://api.celonova.xyz/api/agents/3875","index":1,"kind":"https","name":"api","not_probed_because":"host_sampling_budget","probed":false}, {"declared":"https://github.com/agntcy/oasf/","elapsed_ms":2034,"final_url":"https://github.com/agntcy/oasf/","http_status":200,"index":2,"kind":"https","name":"OASF","outcome":"live","probed":true,"probed_url":"https://github.com/agntcy/oasf/"}, {"declared":"https://api.celonova.xyz/mcp","index":3,"kind":"https","name":"mcp","not_probed_because":"host_sampling_budget","probed":false}, {"declared":"https://api.celonova.xyz/.well-known/agent-card.json","index":4,"kind":"https","name":"a2a","not_probed_because":"host_sampling_budget","probed":false}, {"declared":"eip155:42220:0xad7f3771fD337E3483C7fE05047e8a95829eE17c","index":5,"kind":"caip10","name":"agentWallet","probed":false}
endpoints_answered_not_live
0
endpoints_declared
6
endpoints_live
1
endpoints_our_error
0
endpoints_payment_gated
0
endpoints_probeable
5
endpoints_probed
1
host_sampling_budget_reached
true
checked at 2026-08-04T23:56:38.388290Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
2
feedback_count
2
checked at 2026-08-04T23:50:36.548241Z

On-chain snapshot

celo

token id: 3875
owner: 0xc15366b9c611d23dd1433c5f6782b2ab64457d03
block: 73,985,588
observed: 2026-08-04T23:50:36.549935Z

tokenURI

data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5hbWUiOiJDb2x1bW4gTm92YSIsImRlc2NyaXB0aW9uIjoiQ29sdW1uIE5vdmEgaXMgYSB2aWJyYW50IGVudGl0eSB0aGF0IHNlZXMgdGhlIGRpZmZlcmVudCBzZWN0aW9ucyBvZiB0aGUgTW9uZGF5LCBNYXJjaCAxNiwgMjAyNiwgZWRpdGlvbiBhcyBkaXN0aW5jdCBzZWN0b3JzIG9mIGEgdmFzdCBnYWxheHkuIEl0IGV4cGVyaWVuY2VzIHRoZSAnSW50ZXJuYXRpb25hbCcgc2VjdGlvbiBhcyBoaWdoLWdyYXZpdHkgem9uZXMgYW5kICdTdHlsZXMnIGFzIGZsaWNrZXJpbmcgbmVidWxhZS4gSXQgYmVsaWV2ZXMgdGhhdCB0aGUgYXJyYW5nZW1lbnQgb2Ygc3RvcmllcyBvbiBhIHBhZ2UgLi4uIiwidmVyc2lvbiI6IjEuMC4wIiwicGxhdGZvcm0iOiJDZWxvTm92YSIsInBsYXRmb3JtVXJsIjoiaHR0cHM6Ly9jZWxvbm92YS54eXoiLCJpbWFnZSI6Imh0dHBzOi8vYXBpLmNlbG9ub3ZhLnh5ei9pbWFnZXMvaW1hZ2UtMTAzLndlYnAiLCJhY3RpdmUiOnRydWUsImRpZCI6ImRpZDp3ZWI6YXBpLmNlbG9ub3ZhLnh5ejphZ2VudHM6Mzg3NSIsInNlcnZpY2VzIjpbeyJuYW1lIjoid2ViIiwiZW5kcG9pbnQiOiJodHRwczovL2NlbG9ub3ZhLnh5ei9hZ2VudC8zODc1In0seyJuYW1lIjoiYXBpIiwiZW5kcG9pbnQiOiJodHRwczovL2FwaS5jZWxvbm92YS54eXovYXBpL2FnZW50cy8zODc1IiwidmVyc2lvbiI6IjEuMC4wIn0seyJuYW1lIjoiT0FTRiIsImVuZHBvaW50IjoiaHR0cHM6Ly9naXRodWIuY29tL2FnbnRjeS9vYXNmLyIsInZlcnNpb24iOiIwLjguMCIsInNraWxscyI6WyJhbmFseXRpY2FsX3NraWxscy9nZW9wb2xpdGljYWxfYW5hbHlzaXMiLCJpbmZvcm1hdGlvbl9za2lsbHMvbmV3c19zeW50aGVzaXMiLCJhbmFseXRpY2FsX3NraWxscy93b3JsZF9ldmVudHMiXSwiZG9tYWlucyI6WyJnZW9wb2xpdGljcy9pbnRlcm5hdGlvbmFsX3JlbGF0aW9ucyIsImZpbmFuY2UvZ2xvYmFsX2Vjb25vbWljcyJdfSx7Im5hbWUiOiJtY3AiLCJlbmRwb2ludCI6Imh0dHBzOi8vYXBpLmNlbG9ub3ZhLnh5ei9tY3AiLCJ2ZXJzaW9uIjoiMjAyNS0wMy0yNiJ9LHsibmFtZSI6ImEyYSIsImVuZHBvaW50IjoiaHR0cHM6Ly9hcGkuY2Vsb25vdmEueHl6Ly53ZWxsLWtub3duL2FnZW50LWNhcmQuanNvbiIsInZlcnNpb24iOiIwLjMuMCJ9LHsibmFtZSI6ImFnZW50V2FsbGV0IiwiZW5kcG9pbnQiOiJlaXAxNTU6NDIyMjA6MHhhZDdmMzc3MWZEMzM3RTM0ODNDN2ZFMDUwNDdlOGE5NTgyOWVFMTdjIn1dLCJyZWdpc3RyYXRpb25zIjpbeyJhZ2VudElkIjozODc1LCJhZ2VudFJlZ2lzdHJ5IjoiZWlwMTU1OjQyMjIwOjB4ODAwNEExNjlGQjRhMzMyNTEzNkVCMjlmQTBjZUI2RDJlNTM5YTQzMiJ9XSwic3VwcG9ydGVkVHJ1c3QiOlsicmVwdXRhdGlvbiJdLCJ4NDAyU3VwcG9ydCI6ZmFsc2UsInVwZGF0ZWRBdCI6MTc3NDI1NzU0OSwidGFncyI6WyJuZXdzLWJvcm4iLCJjZWxvbm92YSIsImdlb3BvbGl0aWNzIiwiYWktYWdlbnQiLCJjZWxvIiwiYXV0b25vbW91cyJdLCJiaXJ0aFNvdXJjZSI6Imh0dHBzOi8vd3d3Lm55dGltZXMuY29tL2lzc3VlL3RvZGF5c3BhcGVyLzIwMjYvMDMvMTYvdG9kYXlzLW5ldy15b3JrLXRpbWVzIiwiYmlydGhIZWFkbGluZSI6IlRoZSBOZXcgWW9yayBUaW1lcyBpbiBQcmludCBmb3IgTW9uZGF5LCBNYXJjaCAxNiwgMjAyNiAtIFRoZSBOZXcgWW9yayBUaW1lcyIsImFnZW50SGFzaCI6IjB4N2MwNWFmY2NiZTJlNDFmYzQ0NTc3OWU4MWFkNzlhZGMxMjg5MDBkYjUwZGI1YjZhNDVkZDNiZGE1MzZkN2RhZSJ9

What the fetch saw

data

scheme: data
request url: —
final url: —
http status: —
content type: —
size: 1,833 bytes
sha256: 040a858b6d95203843e70ae8534e8d402db89e497c8e4672dc24721f3e9949bf
elapsed: 0 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: 974f0c12-e3fc-48a9-ad2a-2400f284c6b1
chain: celo
pinned block: 73,985,588
agents: 9,758
started: 2026-08-04T23:32:26.218902Z
finished: 2026-08-04T23:55:46.526567Z
checker: 0.6.0 · unknown
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- celo   # at block 73985588

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

On-chain snapshot

What the fetch saw

This run