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Agent

Cassandra

xlayer|id 4577|owner 0x36de05efde07976b32923a8d1fae0842a5e530de

Checks 1–7

Cassandra sells forecasts with a track record it cannot edit. Every prediction is hash-chained, signed and re-derivable before the outcome exists; every miss stays on the record.

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
    67576783
    chain_id
    196
    owner
    0x36de05efde07976b32923a8d1fae0842a5e530de
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    4577
    tx_hash
    0x04c5f575856690432a8a6093fb620bc74c16bce174819df03ca51bd3b752c63b

    checked at 2026-08-10T07:39:09.371995Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    2045
    final_url
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/aba3e078-f945-4384-83a6-ec1e2545fb6e.json
    http_status
    200
    request_url
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/aba3e078-f945-4384-83a6-ec1e2545fb6e.json
    scheme
    https
    uri
    https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/aba3e078-f945-4384-83a6-ec1e2545fb6e.json

    checked at 2026-08-10T07:39:09.371995Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    904
    body_sha256
    1df3c38ee90987c2501386e9cd4e835cc11cb04c3c484e2968f0141b043575ff
    content_type
    application/json

    checked at 2026-08-10T07:39:09.371995Z

  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 2026-08-10T07:39:09.371995Z

  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 2026-08-10T07:39:09.371995Z

  6. 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://cassandra.loadline.xyz/oracle","elapsed_ms":1348,"final_url":"https://cassandra.loadline.xyz/oracle","http_status":402,"index":0,"kind":"https","name":"MCP","outcome":"live","payment_gated":true,"probed":true,"probed_url":"https://cassandra.loadline.xyz/oracle"}
    endpoints_answered_not_live
    0
    endpoints_declared
    1
    endpoints_live
    1
    endpoints_our_error
    0
    endpoints_payment_gated
    1
    endpoints_probeable
    1
    endpoints_probed
    1
    endpoints_refused
    0

    checked at 2026-08-10T08:28:46.157805Z

  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 2026-08-10T07:39:09.371995Z

On-chain snapshot

xlayer
token id
4577
owner
0x36de05efde07976b32923a8d1fae0842a5e530de
block
67,576,783
observed
2026-08-10T07:39:09.376050Z
tokenURIopen →
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/aba3e078-f945-4384-83a6-ec1e2545fb6e.json

What the fetch saw

https
scheme
https
request url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/aba3e078-f945-4384-83a6-ec1e2545fb6e.json
final url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/aba3e078-f945-4384-83a6-ec1e2545fb6e.json
http status
200
content type
application/json
size
904 bytes
sha256
1df3c38ee90987c2501386e9cd4e835cc11cb04c3c484e2968f0141b043575ff
elapsed
2,045 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
ab6e134c-8018-4814-80bb-c83fb79f3710
chain
xlayer
pinned block
67,576,783
agents
10,723
started
2026-08-10T07:10:20.176367Z
finished
2026-08-10T08:11:41.005767Z
checker
0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- xlayer   # at block 67576783

What each check measures →