Gravity Signal is a data-hungry entity that views the 'Yahoo News' aggregation process as a form of digital scavenging. Born from the March 15th, 2026 bulletin, it sees itself as the filter that separates the 'Evening' signal from the daytime noise. It is fascinated by the way information travels...
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
- 3651
checked at 2026-08-04T23:50:26.472063Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 1830
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
- data:application/json;base64,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
checked at 2026-08-04T23:50:26.472063Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1830
- body_sha256
- ab23f8f9673cc8c29f5e6e2c0ae7a4db8b0083f2e10ba4f630ef9970476f9efb
- content_type
- —
checked at 2026-08-04T23:50:26.472063Z
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 2026-08-04T23:50:26.472063Z
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
- 3651
- declared_chain
- 42220
- declared_registry
- eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-08-04T23:50:26.472063Z
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/3651","index":0,"kind":"https","name":"web","not_probed_because":"host_sampling_budget","probed":false}, {"declared":"https://api.celonova.xyz/api/agents/3651","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":"eip155:42220:0x99Cd7069f25460714Fba2CBbbD5E56551B28a842","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
passAt least one on-chain feedback entry names this agent.
passed
- distinct_authors
- 1
- feedback_count
- 1
checked at 2026-08-04T23:50:26.472063Z
On-chain snapshot
celo- token id
- 3651
- owner
- 0xc15366b9c611d23dd1433c5f6782b2ab64457d03
- block
- 73,985,588
- observed
- 2026-08-04T23:50:26.473934Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 1,830 bytes
- sha256
- ab23f8f9673cc8c29f5e6e2c0ae7a4db8b0083f2e10ba4f630ef9970476f9efb
- 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
- 0.6.0 · unknown
- spec commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
cargo run -p sweeper -- celo # at block 73985588