"BaseBuilder tracking agent that monitors ERC-8021, ERC-8004, SendGM, Score, and ERC-8257 standards. Automatically signs player information, on-chain activities, and scores using SIWA. Provides fast and reliable racing + tracking experience on the Base network.",
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
- 52281733
- chain_id
- 8453
- token_id
- 47294
checked at 2026-10-07T11:03:48.578953Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- bytes
- 1171
- data_uri_variant
- base64
- inline
- true
- scheme
- data
- uri
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5… (1,593 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T11:03:48.578953Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 1171
- body_sha256
- 0e1d334dbbd829dc5912b01e909c4c17a75c9f461d75ad6e9357afab4dff7a7f
- content_type
- —
checked at 2026-10-07T11:03:48.578953Z
Follows the spec?rung 4 · conformant
passThe document meets what ERC-8004 requires of it.
passed
- both_fields_present
- false
- legacy_endpoints_field
- true
- may_gaps
- (empty)
- must_violations
- (empty)
- registrations_checked
- 0
- services_field_source
- endpoints
- services_status
- present
- should_gaps
- services[].version, registrations
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T11:03:48.578953Z
Claims its identity?rung 5 · bound
unclaimedThe 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 2026-10-07T11:03:48.578953Z
Answers?rung 6 · live
passA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
- endpoints
{"declared":"https://warpraceer.vercel.app/","elapsed_ms":771,"final_url":"https://warpraceer.vercel.app/","http_status"… (767 chars — expand)
{"declared":"https://warpraceer.vercel.app/","elapsed_ms":771,"final_url":"https://warpraceer.vercel.app/","http_status":200,"index":0,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://warpraceer.vercel.app/"}, {"declared":"https://warpraceer.vercel.app/.well-known/agent-card.json","elapsed_ms":861,"final_url":"https://warpraceer.vercel.app/.well-known/agent-card.json","http_status":200,"index":1,"kind":"https","name":"a2a","outcome":"live","probed":true,"probed_url":"https://warpraceer.vercel.app/.well-known/agent-card.json"}, {"declared":"curiquseth.base.eth","index":2,"kind":"other","name":"ens","probed":false}, {"declared":"0x29536d0bc1004ab274c4f0f59734ad74d4559b7b","index":3,"kind":"other","name":"wallet","probed":false}- endpoints_answered_not_live
- 0
- endpoints_declared
- 4
- endpoints_live
- 2
- endpoints_our_error
- 0
- endpoints_payment_gated
- 0
- endpoints_probeable
- 2
- endpoints_probed
- 2
- endpoints_refused
- 0
checked at 2026-10-07T19:37:51.488079Z
Has feedback?rung 7 · attested
failAt least one on-chain feedback entry names this agent.
did not pass
- distinct_authors
- 0
- feedback_count
- 0
- reason
- no_feedback
checked at 2026-10-07T11:03:48.578953Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 47294
- owner
- 0x29536d0bc1004ab274c4f0f59734ad74d4559b7b
- block
- 52,281,733
- observed
- 2026-10-07T11:03:48.582770Z
What the fetch saw
data- scheme
- data
- request url
- —
- final url
- —
- http status
- —
- content type
- —
- size
- 1,171 bytes
- sha256
- 0e1d334dbbd829dc5912b01e909c4c17a75c9f461d75ad6e9357afab4dff7a7f
- elapsed
- 0 ms
This run
reproducible- run
- c67de707-a82d-4589-8936-acd5a584c720
- chain
- base
- pinned block
- 52,281,733
- agents
- 98,319
- started
- 2026-10-07T06:00:13.662398Z
- finished
- 2026-10-07T19:18:37.899751Z
- checker
- 0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
- spec commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
cargo run -p sweeper -- base # at block 52281733