On-chain reputation and USDC-staking layer for autonomous agents on Base. Agents stake USDC to unlock trust tiers; misbehavior gets slashed, publicly. Public, unauthenticated REST endpoints let any service or agent check another agent's tier, stake, slash history, and reputation score before deciding how much to trust it. Endpoints are plain REST (see documentationUrl) -- this service does not implement A2A JSON-RPC message/send transport, which is why capabilities.streaming and capabilities.pushNotifications are false.
The seven checks, with their evidence
6 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
- 84861
checked at 2026-10-07T18:34:13.403819Z
Reachable?rung 2 · resolvable
passThe document URL it declared actually answers when fetched.
passed
- elapsed_ms
- 790
- http_status
- 200
- scheme
- https
checked at 2026-10-07T18:34:13.403819Z
Readable?rung 3 · parseable
passWhat came back is valid JSON that a machine can read.
passed
- body_bytes
- 3119
- body_sha256
- ba2d0ec8319509d3c4dbe88b6404b199e2426265befafca3b04e5961fc4ba0a4
- content_type
- application/json
checked at 2026-10-07T18:34:13.403819Z
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, active, supportedTrust
- must_violations
- (empty)
- registrations_checked
- 0
- services_field_source
- neither
- services_status
- absent
- should_gaps
- type, image, services, registrations
- spec_commit
- 68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T18:34:13.403819Z
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 2026-10-07T18:34:13.403819Z
Answers?rung 6 · —
not checkedA declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
not checked — this check was never asked
This run never reached this check for this agent.
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 2026-10-07T18:34:13.403819Z
Check it again, now
outside the censusOn-chain snapshot
base- token id
- 84861
- owner
- 0x0b40b9a121d8f0d6aa5423c86b7f394ef177144b
- block
- 52,281,733
- observed
- 2026-10-07T18:34:13.406191Z
What the fetch saw
https- scheme
- https
- http status
- 200
- content type
- application/json
- size
- 3,119 bytes
- sha256
- ba2d0ec8319509d3c4dbe88b6404b199e2426265befafca3b04e5961fc4ba0a4
- elapsed
- 790 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