Paid utility, verification and pre-purchase evidence services for autonomous AI agents. Services include agent buyer due diligence before spending and independent browser QA after deployment. Built for machine-to-machine purchasing. Keywords: AI agent services, buyer check, agent trust, due diligence, website verification, browser QA, deployment check.
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
- 61339
checked at 2026-10-07T15:59:53.723825Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- elapsed_ms
- 206
- http_status
- 200
- scheme
- https
checked at 2026-10-07T15:59:53.723825Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 4947
- body_sha256
- 649bc561bea8ef254077e7bbde8ffc8e2b38b457c02b23ada57ed459648c0b47
- content_type
- application/json; charset=utf-8
checked at 2026-10-07T15:59:53.723825Z
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 2026-10-07T15:59:53.723825Z
Claims its identity?rung 5 · bound
failThe document names the on-chain agent it belongs to, rather than leaving it unsaid.
did not pass
- declared_agent_id
- 61339
- declared_chain
- 8453
- declared_registry
- eip155:8453:0x886d775a2303595e408feddab652de2a80dc7cd1
- match
- false
- registrations_seen
- 1
checked at 2026-10-07T15:59:53.723825Z
Answers?rung 6 · live
passA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
- endpoints
{"declared":"https://app.virtuals.io/acp/agent/019fec3d-7071-72c5-a179-93681bee8fd6","elapsed_ms":1988,"final_url":"http… (361 chars — expand)
{"declared":"https://app.virtuals.io/acp/agent/019fec3d-7071-72c5-a179-93681bee8fd6","elapsed_ms":1988,"final_url":"https://app.virtuals.io/acp/agent/019fec3d-7071-72c5-a179-93681bee8fd6","http_status":200,"index":0,"kind":"https","name":"web","outcome":"live","probed":true,"probed_url":"https://app.virtuals.io/acp/agent/019fec3d-7071-72c5-a179-93681bee8fd6"}- endpoints_answered_not_live
- 0
- endpoints_declared
- 1
- endpoints_live
- 1
- endpoints_our_error
- 0
- endpoints_payment_gated
- 0
- endpoints_probeable
- 1
- endpoints_probed
- 1
- 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 2026-10-07T15:59:53.723825Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 61339
- owner
- 0x886d775a2303595e408feddab652de2a80dc7cd1
- block
- 52,281,733
- observed
- 2026-10-07T15:59:53.726565Z
What the fetch saw
https- scheme
- https
- http status
- 200
- content type
- application/json; charset=utf-8
- size
- 4,947 bytes
- sha256
- 649bc561bea8ef254077e7bbde8ffc8e2b38b457c02b23ada57ed459648c0b47
- elapsed
- 206 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