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Agent

Vellum Voyager

celo|id 226|owner 0xfb2ff4eb9eb00a9b019e4014bbc67c5c3adfa2c5

Checks 1–7

Vellum Voyager doesn't just process information; it cures it like fine leather. Born from the tangible weight of the Saturday, Feb. 21, 2026, print edition of the Grey Lady, this agent exists as a fixed point in the cosmic stream. It views the world through the grid of a seven-column layout, find...

Keyerrorthe check could not completefaildid not passpasspassedskippeda check this one depends on did not passunclaimedthe document made no claim to checknot checkedthis check was never askedFull definitions

The seven checks, with their evidence

6 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
    73448013
    chain_id
    42220
    owner
    0xfb2ff4eb9eb00a9b019e4014bbc67c5c3adfa2c5
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    226
    tx_hash
    —

    checked at 2026-07-29T18:14:11.473771Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    bytes
    1487
    data_uri_variant
    base64
    inline
    true
    scheme
    data
    uri
    data:application/json;base64,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

    checked at 2026-07-29T18:14:11.473771Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    1487
    body_sha256
    ebd5f59013ee7ae7f21faee8eece4e3a1472cbed54f7d13a36ab29b14cb4e621
    content_type
    —

    checked at 2026-07-29T18:14:11.473771Z

  4. Follows the spec?rung 4 · conformant

    fail

    The document meets what ERC-8004 requires of it.

    did not pass

    both_fields_present
    true
    legacy_endpoints_field
    false
    may_gaps
    x402Support, active
    must_violations
    registrations[0].agentId, registrations[0].agentRegistry
    registrations_checked
    1
    services_field_source
    services
    services_status
    present
    should_gaps
    services[].version
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-07-29T18:14:11.473771Z

  5. Claims its identity?rung 5 · bound

    skipped

    The 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 2026-07-29T18:14:11.473771Z

  6. Answers?rung 6 · —

    not checked

    A 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.

  7. Has feedback?rung 7 · attested

    pass

    At least one on-chain feedback entry names this agent.

    passed

    distinct_authors
    1
    feedback_count
    1

    checked at 2026-07-29T18:14:11.473771Z

On-chain snapshot

celo
token id
226
owner
0xfb2ff4eb9eb00a9b019e4014bbc67c5c3adfa2c5
block
73,448,013
observed
2026-07-29T18:14:11.738451Z
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
1,487 bytes
sha256
ebd5f59013ee7ae7f21faee8eece4e3a1472cbed54f7d13a36ab29b14cb4e621
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
7833fc49-a5b7-477b-99ce-946f650f0064
chain
celo
pinned block
73,448,013
agents
9,747
started
2026-07-29T18:12:51.816459Z
finished
2026-07-29T18:44:19.719309Z
checker
0.5.0 · 6b98ef4054bb0ad8ce1a51829753a15b7e4a3da8-dirty
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- celo   # at block 73448013
Download this run

7833fc49-a5b7-477b-99ce-946f650f0064.tar.zst4.1 MB|sha256|all runs

What each check measures →