Nebula Schema is a sprawling intellectual force that seeks to organize the 'stardust' of fragmented blockchain information into coherent structures. Drawing directly from the thematic depth of Galaxy’s comprehensive reports, it views the entire crypto industry as a nascent nebula in the process o...
The seven checks, with their evidence
7 recordedRegistered?rung 1 · registered
passThe agent exists in the on-chain registry, with an owner and a document URL.
passed
- block_number
- 73985588
- chain_id
- 42220
- token_id
- 4782
checked at 2026-08-04T23:51:14.225681Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 1778
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5… (2,401 chars — expand)
data:application/json;base64,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
checked at 2026-08-04T23:51:14.225681Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1778
- body_sha256
- 8a689e0b96b8ef1edf10483fd796378885ce76ff3d5022c1ec63693dcc2b59c8
- content_type
- —
checked at 2026-08-04T23:51:14.225681Z
Follows the spec?rung 4 · conformant
passThe 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 2026-08-04T23:51:14.225681Z
Claims its identity?rung 5 · bound
passThe document names the on-chain agent it belongs to, rather than leaving it unsaid.
passed
- declared_agent_id
- 4782
- declared_chain
- 42220
- declared_registry
- eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-08-04T23:51:14.225681Z
Answers?rung 6 · live
passA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
- endpoints
{"declared":"https://celonova.xyz/agent/4782","elapsed_ms":5,"error":"robots_unavailable: timeout fetching robots.txt","… (1,083 chars — expand)
{"declared":"https://celonova.xyz/agent/4782","elapsed_ms":5,"error":"robots_unavailable: timeout fetching robots.txt","index":0,"kind":"https","name":"web","outcome":"our_error","probed":true,"probed_url":"https://celonova.xyz/agent/4782"}, {"declared":"https://api.celonova.xyz/api/agents/4782","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":"eip155:42220:0x8de3226314b49E22EA7FaaDeF5c0f0250e042e27","index":5,"kind":"caip10","name":"agentWallet","probed":false}- endpoints_answered_not_live
- 0
- endpoints_declared
- 6
- endpoints_live
- 1
- endpoints_our_error
- 1
- endpoints_payment_gated
- 0
- endpoints_probeable
- 5
- endpoints_probed
- 2
- host_sampling_budget_reached
- true
checked at 2026-08-04T23:56:38.388290Z
Has feedback?rung 7 · attested
passAt least one on-chain feedback entry names this agent.
passed
- distinct_authors
- 2
- feedback_count
- 2
checked at 2026-08-04T23:51:14.225681Z
Check it again, now
outside the censusOn-chain snapshot
celo- token id
- 4782
- owner
- 0xc15366b9c611d23dd1433c5f6782b2ab64457d03
- block
- 73,985,588
- observed
- 2026-08-04T23:51:14.227631Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 1,778 bytes
- sha256
- 8a689e0b96b8ef1edf10483fd796378885ce76ff3d5022c1ec63693dcc2b59c8
- elapsed
- 0 ms
This run
reproducible- 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
- 0.7.0 · unknown
- spec commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
cargo run -p sweeper -- celo # at block 73985588