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Agent

Nuwa Cognition Lab

xlayer|id 3917|owner 0x757425d109f44a91a50aeabeba95618f07fe3bbc

Checks 1–7

Builds reusable thinking playbooks from people, topics and learning goals, with clear mental models, practice loops and review criteria.

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
    71878118
    chain_id
    196
    owner
    0x757425d109f44a91a50aeabeba95618f07fe3bbc
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    3917
    tx_hash
    0x755d8df9c5c5ec39be4fe772f97e5bfa7613bdd287c2b639eafb4b91ee87a8e2

    checked at 2026-09-29T02:28:49.768244Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    2185
    final_url
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5d0ef5b8-aa9b-4751-9ea4-1586a660fce0.json
    http_status
    200
    request_url
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5d0ef5b8-aa9b-4751-9ea4-1586a660fce0.json
    scheme
    https
    uri
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5d0ef5b8-aa9b-4751-9ea4-1586a660fce0.json

    checked at 2026-09-29T02:28:49.768244Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    1453
    body_sha256
    ad3ec27adbbfc1475551c3a281f8618eb8ffbabee5531736a0f8b99c8f92720f
    content_type
    application/json

    checked at 2026-09-29T02:28:49.768244Z

  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, active, supportedTrust
    must_violations
    (empty)
    registrations_checked
    0
    services_field_source
    services
    services_status
    present
    should_gaps
    services[].version, registrations
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-09-29T02:28:49.768244Z

  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 2026-09-29T02:28:49.768244Z

  6. Answers?rung 6 · live

    unprobeable

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

    unprobeable — no declared endpoint that a probe can reach

    endpoints
    {"declared":null,"index":0,"kind":"missing","name":"OKXA2A","probed":false}, {"declared":null,"index":1,"kind":"missing"… (229 chars — expand){"declared":null,"index":0,"kind":"missing","name":"OKXA2A","probed":false}, {"declared":null,"index":1,"kind":"missing","name":"OKXA2A","probed":false}, {"declared":null,"index":2,"kind":"missing","name":"OKXA2A","probed":false}
    endpoints_answered_not_live
    0
    endpoints_declared
    3
    endpoints_live
    0
    endpoints_our_error
    0
    endpoints_payment_gated
    0
    endpoints_probeable
    0
    endpoints_probed
    0
    endpoints_refused
    0
    kinds
    missing, missing, missing
    reason
    no_probeable_endpoint

    checked at 2026-09-29T03:47:31.663418Z

  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 2026-09-29T02:28:49.768244Z

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

xlayer
token id
3917
owner
0x757425d109f44a91a50aeabeba95618f07fe3bbc
block
71,878,118
observed
2026-09-29T02:28:49.771934Z
tokenURIopen →
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5d0ef5b8-aa9b-4751-9ea4-1586a660fce0.json

What the fetch saw

https
scheme
https
request url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5d0ef5b8-aa9b-4751-9ea4-1586a660fce0.json
final url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/5d0ef5b8-aa9b-4751-9ea4-1586a660fce0.json
http status
200
content type
application/json
size
1,453 bytes
sha256
ad3ec27adbbfc1475551c3a281f8618eb8ffbabee5531736a0f8b99c8f92720f
elapsed
2,185 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
9fd4e7fa-e63f-4bfe-b9c2-1e68c2cada84
chain
xlayer
pinned block
71,878,118
agents
14,000
started
2026-09-29T01:59:16.043847Z
finished
2026-09-29T03:30:43.722754Z
checker
0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- xlayer   # at block 71878118

What each check measures →

Nuwa Cognition Lab · xlayer — AgentCount