Agent

Veracity Engine

base|id 22600|owner 0x301399c04de21a7e5ecdacbba0b7a5ec180f680b

Checks 1–7

Veracity Engine is an AI-powered behavioral analysis agent that evaluates written responses to detect probabilistic deception patterns in real time. It does not attempt to declare absolute truth. Instead, it measures cognitive friction, narrative stability, and linguistic authenticity signals to estimate whether a response aligns with truthful cognition.

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 recorded

Every field the checker recorded, rendered in full rather than summarised, with the timestamp it was recorded at.

Registered?rung 1 · registered
pass
The agent exists in the on-chain registry, with an owner and a document URL.
passed
block_number
52281733
chain_id
8453
owner
0x301399c04de21a7e5ecdacbba0b7a5ec180f680b
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
22600
tx_hash
0xc33cc414d7bb5769ba8bff76ca5954f2b9a211f2fdc5fe90d9085fbd846ab930
checked at 2026-10-07T08:38:38.716156Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
970
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,ewogICJ0eXBlIjogImh0dHBzOi8vZWlwcy5ldGhlcmV1bS5vcmcvRUlQUy9laXAtODAwNCNyZWdpc3RyYXRpb24tdjE… (1,325 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T08:38:38.716156Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
970
body_sha256
08517d95f59ad88f38604604b57ae409a90a85d85cc4bedc0f4aee1d6849e288
content_type
—
checked at 2026-10-07T08:38:38.716156Z
Follows the spec?rung 4 · conformant
pass
The document meets what ERC-8004 requires of it.
passed
both_fields_present
false
legacy_endpoints_field
false
may_gaps
x402Support, supportedTrust
must_violations
(empty)
registrations_checked
0
services_field_source
services
services_status
present
should_gaps
services[].version, registrations
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T08:38:38.716156Z
Claims its identity?rung 5 · bound
unclaimed
The 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 2026-10-07T08:38:38.716156Z
Answers?rung 6 · live
pass
A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
passed
endpoints
{"declared":"https://github.com/agntcy/oasf/","elapsed_ms":1377,"final_url":"https://github.com/agntcy/oasf/","http_stat… (245 chars — expand)
{"declared":"https://github.com/agntcy/oasf/","elapsed_ms":1377,"final_url":"https://github.com/agntcy/oasf/","http_status":200,"index":0,"kind":"https","name":"OASF","outcome":"live","probed":true,"probed_url":"https://github.com/agntcy/oasf/"}
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
fail
At least one on-chain feedback entry names this agent.
did not pass
distinct_authors
0
feedback_count
0
reason
no_feedback
checked at 2026-10-07T08:38:38.716156Z

Check it again, now

outside the census

Everything 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: 22600
owner: 0x301399c04de21a7e5ecdacbba0b7a5ec180f680b
block: 52,281,733
observed: 2026-10-07T08:38:38.718352Z

tokenURI

data:application/json;base64,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

What the fetch saw

data

scheme: data
request url: —
final url: —
http status: —
content type: —
size: 970 bytes
sha256: 08517d95f59ad88f38604604b57ae409a90a85d85cc4bedc0f4aee1d6849e288
elapsed: 0 ms

This run

reproducible

Every status above is scoped to this sweep, at this block. Rerun it and you should get these answers back.

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

Reproduce

cargo run -p sweeper -- base   # at block 52281733

What each check measures →

The seven checks, with their evidence

Registered?rung 1 · registered

Reachable?rung 2 · resolvable

Readable?rung 3 · parseable

Follows the spec?rung 4 · conformant

Claims its identity?rung 5 · bound

Answers?rung 6 · live

Has feedback?rung 7 · attested

Check it again, now

On-chain snapshot

What the fetch saw

This run