Checks 1–7
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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 recordedEvery field the checker recorded, rendered in full rather than summarised, with the timestamp it was recorded at.
Registered?rung 1 · registered
passThe agent exists in the on-chain registry, with an owner and a document URL.
passed
- block_number
- 51072140
- chain_id
- 8453
- token_id
- 1521
checked at 2026-09-09T06:27:13.216295Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- elapsed_ms
- 27651
- gateway_attempts
{"error":"timeout","gateway":"https://ipfs.io/ipfs/","http_status":null}, {"error":"ssrf_blocked: dns resolution failed:… (343 chars — expand)
{"error":"timeout","gateway":"https://ipfs.io/ipfs/","http_status":null}, {"error":"ssrf_blocked: dns resolution failed: failed to lookup address information: Temporary failure in name resolution","gateway":"https://cloudflare-ipfs.com/ipfs/","http_status":null}, {"error":null,"gateway":"https://gateway.pinata.cloud/ipfs/","http_status":200}- http_status
- 200
- scheme
- ipfs
- via_gateway
- https://gateway.pinata.cloud/ipfs/
checked at 2026-09-09T06:27:13.216295Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 2030
- body_sha256
- 44cec1f998dfed625ba9281e3454e8be5e4ec2308b6fe9e7b3c21ba6f8fa140f
- content_type
- application/json
checked at 2026-09-09T06:27:13.216295Z
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
- x402Support
- must_violations
- (empty)
- registrations_checked
- 1
- services_field_source
- services
- services_status
- present
- should_gaps
- services[].version
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-09-09T06:27:13.216295Z
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
- 1521
- declared_chain
- 8453
- declared_registry
- eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
- match
- true
- registrations_seen
- 1
checked at 2026-09-09T06:27:13.216295Z
Answers?rung 6 · live
passA 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-55","elapsed_ms":1995,"final_url":"https://meerkat.up.railway.ap… (1,205 chars — expand)
{"declared":"https://meerkat.up.railway.app/mcp/meerkat-55","elapsed_ms":1995,"final_url":"https://meerkat.up.railway.app/mcp/meerkat-55","http_status":404,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/mcp/meerkat-55"}, {"declared":"https://meerkat.up.railway.app/agents/meerkat-55/.well-known/agent-card.json","elapsed_ms":1745,"final_url":"https://meerkat.up.railway.app/agents/meerkat-55/.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-55/.well-known/agent-card.json"}, {"declared":"https://meerkat.up.railway.app/oasf/meerkat-55","elapsed_ms":1995,"final_url":"https://meerkat.up.railway.app/oasf/meerkat-55","http_status":404,"index":2,"kind":"https","name":"OASF","outcome":"not_live","probed":true,"probed_url":"https://meerkat.up.railway.app/oasf/meerkat-55"}, {"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
passAt least one on-chain feedback entry names this agent.
passed
- distinct_authors
- 5
- feedback_count
- 5
checked at 2026-09-09T06:27:13.216295Z
Check it again, now
outside the censusEverything 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
- 1521
- owner
- 0x8ef00ddbf3295c9ed5523002669ca5f8dfba6705
- block
- 51,072,140
- observed
- 2026-09-09T06:27:13.218995Z
tokenURIopen via ipfs.io →
ipfs://QmQKNnTtYHKJy61NdxgHr24Lh4RoLciZZ3hzEDYZBMCq35
What the fetch saw
ipfs- scheme
- ipfs
- http status
- 200
- content type
- application/json
- size
- 2,030 bytes
- sha256
- 44cec1f998dfed625ba9281e3454e8be5e4ec2308b6fe9e7b3c21ba6f8fa140f
- elapsed
- 27,651 ms
This run
reproducibleEvery 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