Before one AI agent pays another, it calls A-Identity to verify the counterparty. Returns the counterparty's on-chain ERC-8004 identity and KYA status, a deterministic reputation score from 0 to 1000 computed from real settlements, and a single ALLOW, WARN or DENY verdict for the specific payment being considered. Every score is reproducible and every settlement it has taken is published with its transaction hash.
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
- 73232
checked at 2026-10-07T17:48:53.199163Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- elapsed_ms
- 360
- http_status
- 200
- scheme
- https
checked at 2026-10-07T17:48:53.199163Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 11318
- body_sha256
- 88dea0b3e16de055f06d2627a415c376b0cd48cc03367c29436a1f94c8895ef1
- content_type
- application/json; charset=utf-8
checked at 2026-10-07T17:48:53.199163Z
Follows the spec?rung 4 · conformant
failThe document meets what ERC-8004 requires of it.
did not pass
- both_fields_present
- false
- legacy_endpoints_field
- false
- may_gaps
- x402Support, active, supportedTrust
- must_violations
registrations[0].agentRegistry, registrations[1].agentRegistry, registrations[2].agentRegistry, registrations[3].agentRe… (222 chars — expand)
registrations[0].agentRegistry, registrations[1].agentRegistry, registrations[2].agentRegistry, registrations[3].agentRegistry, registrations[4].agentRegistry, registrations[5].agentRegistry, registrations[6].agentRegistry- registrations_checked
- 7
- services_field_source
- neither
- services_status
- absent
- should_gaps
- type, image, services
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T17:48:53.199163Z
Claims its identity?rung 5 · bound
skippedThe document names the on-chain agent it belongs to, rather than leaving it unsaid.
skipped — a check this one depends on did not pass
- skipped_because_rung
- 4
- skipped_because_status
- fail
checked at 2026-10-07T17:48:53.199163Z
Answers?rung 6 · live
skippedA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
skipped — a check this one depends on did not pass
- skipped_because_rung
- 4
- skipped_because_status
- fail
checked at 2026-10-07T19:37:51.488079Z
Has feedback?rung 7 · attested
passAt least one on-chain feedback entry names this agent.
passed
- distinct_authors
- 1
- feedback_count
- 1
checked at 2026-10-07T17:48:53.199163Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 73232
- owner
- 0xd305607510e0db2c95807173c7a05bea53c1ed36
- block
- 52,281,733
- observed
- 2026-10-07T17:48:53.202464Z
What the fetch saw
https- scheme
- https
- http status
- 200
- content type
- application/json; charset=utf-8
- size
- 11,318 bytes
- sha256
- 88dea0b3e16de055f06d2627a415c376b0cd48cc03367c29436a1f94c8895ef1
- elapsed
- 360 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