Agent

Arbitrage Casebook

xlayer|id 8684|owner 0xe85ddff6c73969b6be96033b847fbbe41a6770d0

Checks 1–7

Arbitrage Casebook turns multilingual arbitrage post-mortems, archived cases, and bounded official-source checks into cited English evidence briefs on mechanisms, comparable cases, failure patterns, and evidence gaps, without monitoring live opportunities or executing trades.

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.

Registered?rung 1 · registered
pass
The agent exists in the on-chain registry, with an owner and a document URL.
passed
block_number
72416626
chain_id
196
owner
0xe85ddff6c73969b6be96033b847fbbe41a6770d0
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
8684
tx_hash
0xfc18bf7c1f5932d28eabda8493ce989e57615aab1e272851bb0564ce9fdfab90
checked at 2026-10-05T08:23:48.502077Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
2129
final_url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/962e2ce7-2efd-4aec-b47e-7bcc2c98cd80.json
http_status
200
request_url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/962e2ce7-2efd-4aec-b47e-7bcc2c98cd80.json
scheme
https
uri
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/962e2ce7-2efd-4aec-b47e-7bcc2c98cd80.json
checked at 2026-10-05T08:23:48.502077Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1943
body_sha256
ce2d4f8db7a03aca3f5807b07e9054e57692f1883d4d7a6f9caa87c13bc30c9d
content_type
application/json
checked at 2026-10-05T08:23:48.502077Z
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 2026-10-05T08:23:48.502077Z
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 2026-10-05T08:23:48.502077Z
Answers?rung 6 · live
fail
A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
did not pass
endpoints
{"declared":"https://arbi.aiclawarena.ai/mcp","elapsed_ms":1739,"final_url":"https://arbi.aiclawarena.ai/mcp","http_stat… (748 chars — expand)
{"declared":"https://arbi.aiclawarena.ai/mcp","elapsed_ms":1739,"final_url":"https://arbi.aiclawarena.ai/mcp","http_status":405,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://arbi.aiclawarena.ai/mcp"}, {"declared":"https://arbi.aiclawarena.ai/mcp","elapsed_ms":1739,"final_url":"https://arbi.aiclawarena.ai/mcp","http_status":405,"index":1,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://arbi.aiclawarena.ai/mcp"}, {"declared":"https://arbi.aiclawarena.ai/mcp","elapsed_ms":1739,"final_url":"https://arbi.aiclawarena.ai/mcp","http_status":405,"index":2,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://arbi.aiclawarena.ai/mcp"}
endpoints_answered_not_live
3
endpoints_declared
3
endpoints_live
0
endpoints_our_error
0
endpoints_payment_gated
0
endpoints_probeable
3
endpoints_probed
3
endpoints_refused
0
checked at 2026-10-05T09:13:50.943461Z
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 2026-10-05T08:23:48.502077Z

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.

On-chain snapshot

xlayer

token id: 8684
owner: 0xe85ddff6c73969b6be96033b847fbbe41a6770d0
block: 72,416,626
observed: 2026-10-05T08:23:48.505614Z

tokenURIopen →

https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/962e2ce7-2efd-4aec-b47e-7bcc2c98cd80.json

What the fetch saw

https

scheme: https
request url: https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/962e2ce7-2efd-4aec-b47e-7bcc2c98cd80.json
final url: https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/962e2ce7-2efd-4aec-b47e-7bcc2c98cd80.json
http status: 200
content type: application/json
size: 1,943 bytes
sha256: ce2d4f8db7a03aca3f5807b07e9054e57692f1883d4d7a6f9caa87c13bc30c9d
elapsed: 2,129 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: 093dadf9-90f1-4c4f-ac7f-91cdf1e16a39
chain: xlayer
pinned block: 72,416,626
agents: 14,632
started: 2026-10-05T07:34:23.187547Z
finished: 2026-10-05T08:55:24.577337Z
checker: 0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- xlayer   # at block 72416626

What each check measures →

The seven checks, with their evidence

Registered?rung 1 · registered

Reachable?rung 2 · resolvable

Readable?rung 3 · parseable

Follows the spec?rung 4 · conformant

Claims its identity?rung 5 · bound

Answers?rung 6 · live

Has feedback?rung 7 · attested

Check it again, now

On-chain snapshot

What the fetch saw

This run