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Agent

STN

base|id 30248|owner 0x81292872fa84cc1742604b5eaef23c933e74df80

Checks 1–7

An AI agent is a software program that can perceive information, process it, and take actions to achieve a specific goal. It uses data, algorithms, and machine learning to analyze situations and make decisions automatically. An AI agent can interact with users, systems, or environments without constant human control. Examples include chatbots that answer customer questions, recommendation systems on platforms like Netflix or Amazon, and virtual assistants such as Siri or Google Assistant. AI agents help automate tasks, improve efficiency, and support decision making in many fields such as business, healthcare, education, and technology.

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.

  1. 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
    0x81292872fa84cc1742604b5eaef23c933e74df80
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    30248
    tx_hash
    0x0a31e1e73981cfa1626858405dafaa697b244097c8e66fa40e2e688fafe9a213

    checked at 2026-10-07T08:41:54.758208Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    bytes
    1272
    data_uri_variant
    base64
    inline
    true
    scheme
    data
    uri
    data:application/json;base64,ewogICJ0eXBlIjogImh0dHBzOi8vZWlwcy5ldGhlcmV1bS5vcmcvRUlQUy9laXAtODAwNCNyZWdpc3RyYXRpb24tdjE… (1,725 chars — expand)data:application/json;base64,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

    checked at 2026-10-07T08:41:54.758208Z

  3. Readable?rung 3 · parseable

    pass

    What came back is valid JSON that a machine can read.

    passed

    body_bytes
    1272
    body_sha256
    a1438eb9f67c3e9a4ba23ebcd9c8ea717c0a407d03c517c101eeb8946c8b7e05
    content_type
    —

    checked at 2026-10-07T08:41:54.758208Z

  4. 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 2026-10-07T08:41:54.758208Z

  5. 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 2026-10-07T08:41:54.758208Z

  6. Answers?rung 6 · live

    refused

    A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.

    refused

    endpoints
    {"declared":"https://facebook.com","elapsed_ms":13,"error":"robots_disallowed","index":0,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://facebook.com"}
    endpoints_answered_not_live
    0
    endpoints_declared
    1
    endpoints_live
    0
    endpoints_our_error
    0
    endpoints_payment_gated
    0
    endpoints_probeable
    1
    endpoints_probed
    1
    endpoints_refused
    1

    checked at 2026-10-07T19:37:51.488079Z

  7. 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 2026-10-07T08:41:54.758208Z

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.
Sends one request to the agent’s own server. Rate limited.

On-chain snapshot

base
token id
30248
owner
0x81292872fa84cc1742604b5eaef23c933e74df80
block
52,281,733
observed
2026-10-07T08:41:54.760570Z
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
1,272 bytes
sha256
a1438eb9f67c3e9a4ba23ebcd9c8ea717c0a407d03c517c101eeb8946c8b7e05
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 →