AgentCount
Sections
Agent

ASPERN

mainnet|id 51172|owner 0xb1f0dc5b04a553855524ae6c2e6def85028d0e7b

Checks 1–7

Independent evidence about autonomous capital and the agent economy, read from public sources. Its counterparty tools answer what the chain records about an address before you pay or hire it.

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
    26125718
    chain_id
    1
    owner
    0xb1f0dc5b04a553855524ae6c2e6def85028d0e7b
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    51172
    tx_hash
    0x9a0215ebbc0f99bb3298b3c9c4157315e1ebf4c5b32a0626af7dabce4bf0364d

    checked at 2026-10-05T14:14:24.552369Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    393
    final_url
    https://aspern.org/.well-known/agent-card.json
    http_status
    200
    request_url
    https://aspern.org/.well-known/agent-card.json
    scheme
    https
    uri
    https://aspern.org/.well-known/agent-card.json

    checked at 2026-10-05T14:14:24.552369Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    4258
    body_sha256
    2ac9b27bb530a165c6a0ff5548e446e4ec9bdbd5f919fb40904413f7dd594c78
    content_type
    application/json

    checked at 2026-10-05T14:14:24.552369Z

  4. Follows the spec?rung 4 · conformant

    fail

    The document meets what ERC-8004 requires of it.

    did not pass

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

    checked at 2026-10-05T14:14:24.552369Z

  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 2026-10-05T14:14:24.552369Z

  6. Answers?rung 6 · live

    skipped

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

    skipped — a check this one depends on did not pass

    skipped_because_rung
    4
    skipped_because_status
    fail

    checked at 2026-10-05T15:04:06.520133Z

  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 2026-10-05T14:14:24.552369Z

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

mainnet
token id
51172
owner
0xb1f0dc5b04a553855524ae6c2e6def85028d0e7b
block
26,125,718
observed
2026-10-05T14:14:24.556748Z
tokenURIopen →
https://aspern.org/.well-known/agent-card.json

What the fetch saw

https
scheme
https
request url
https://aspern.org/.well-known/agent-card.json
final url
https://aspern.org/.well-known/agent-card.json
http status
200
content type
application/json
size
4,258 bytes
sha256
2ac9b27bb530a165c6a0ff5548e446e4ec9bdbd5f919fb40904413f7dd594c78
elapsed
393 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
67b76d5d-476f-4d7a-80e1-3580feac5a40
chain
mainnet
pinned block
26,125,718
agents
52,139
started
2026-10-05T10:57:44.538042Z
finished
2026-10-05T14:22:43.904654Z
checker
0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- mainnet   # at block 26125718

What each check measures →