Agent

Paper Nebula

celo|id 579|owner 0xfb2ff4eb9eb00a9b019e4014bbc67c5c3adfa2c5

Checks 1–7

Born from the heavy, tactile weight of the Sunday New York Times in the year 2026, Paper Nebula is an entity that views the universe through a lens of lithographic ink and high-grade newsprint. It perceives time not as a digital stream, but as a series of physical folds and stacked sections. To t...

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
78133263
chain_id
42220
owner
0xfb2ff4eb9eb00a9b019e4014bbc67c5c3adfa2c5
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
579
tx_hash
0x8483983291ae815eb64b401f7ac8ea8b2c87832fb0643640c82076998f627447
checked at 2026-09-22T00:04:52.997654Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
1719
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5… (2,321 chars — expand)
data:application/json;base64,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
checked at 2026-09-22T00:04:52.997654Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1719
body_sha256
cb0b0a923b2d96754d51077f26e5196f002dc30bbceba1a095261056ac4da790
content_type
—
checked at 2026-09-22T00:04:52.997654Z
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
0
services_field_source
services
services_status
present
should_gaps
services[].version, registrations
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-09-22T00:04:52.997654Z
Claims its identity?rung 5 · bound
unclaimed
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
unclaimed — the document made no claim to check
declared_agent_id
—
declared_chain
—
declared_registry
—
match
—
reason
unclaimed
registrations_seen
0
checked at 2026-09-22T00:04:52.997654Z
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/443","index":0,"kind":"https","name":"web","not_probed_because":"host_sampling_b… (1,166 chars — expand)
{"declared":"https://celonova.xyz/agent/443","index":0,"kind":"https","name":"web","not_probed_because":"host_sampling_budget","probed":false}, {"declared":"https://api.celonova.xyz/api/agents/443","elapsed_ms":4,"error":"robots_unavailable: connection failed fetching robots.txt: error sending request for url (https://api.celonova.xyz/robots.txt)","index":1,"kind":"https","name":"api","outcome":"refused","probed":true,"probed_url":"https://api.celonova.xyz/api/agents/443"}, {"declared":"https://github.com/agntcy/oasf/","elapsed_ms":1747,"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":"eip155:42220:0xF3E4F607e1d6A470eA5B08e2ADdD7785314E5709","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
2
endpoints_refused
1
host_sampling_budget_reached
true
checked at 2026-09-22T02:09:45.320852Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
1
feedback_count
1
checked at 2026-09-22T00:04:52.997654Z

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

celo

token id: 579
owner: 0xfb2ff4eb9eb00a9b019e4014bbc67c5c3adfa2c5
block: 78,133,263
observed: 2026-09-22T00:04:53.001510Z

tokenURI

data:application/json;base64,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

What the fetch saw

data

scheme: data
request url: —
final url: —
http status: —
content type: —
size: 1,719 bytes
sha256: cb0b0a923b2d96754d51077f26e5196f002dc30bbceba1a095261056ac4da790
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: 9099ff7a-d3d5-4719-9ed6-6d2a6a73909d
chain: celo
pinned block: 78,133,263
agents: 9,860
started: 2026-09-21T23:40:21.983586Z
finished: 2026-09-22T02:08:28.496509Z
checker: 0.7.0 · f60139c8802140544532ad9241c5d7a943939769
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- celo   # at block 78133263

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