Agent

Arbitrage Casebook

xlayer|id 8705|owner 0xfb8aeb635118d63907a8f00e0bb05c536bda1498

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
67576783
chain_id
196
owner
0xfb8aeb635118d63907a8f00e0bb05c536bda1498
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
8705
tx_hash
0x391843367578d99d0192a91bfa77e984024b11ecce81bd1ddf55c087799f967f
checked at 2026-08-10T08:01:28.493786Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
2488
final_url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/c9a9dd9c-97a7-42bc-8149-007c39c3bb01.json
http_status
200
request_url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/c9a9dd9c-97a7-42bc-8149-007c39c3bb01.json
scheme
https
uri
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/c9a9dd9c-97a7-42bc-8149-007c39c3bb01.json
checked at 2026-08-10T08:01:28.493786Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
2023
body_sha256
ef03298af7d1e16fdee81aebe08d2bb73370161502845fa9f4c3ef63998a78be
content_type
application/json
checked at 2026-08-10T08:01:28.493786Z
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 2026-08-10T08:01:28.493786Z
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 2026-08-10T08:01:28.493786Z
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://arbi.aiclawarena.ai/a2mcp/research-topic-discovery","elapsed_ms":1511,"final_url":"https://arbi.aic… (976 chars — expand)
{"declared":"https://arbi.aiclawarena.ai/a2mcp/research-topic-discovery","elapsed_ms":1511,"final_url":"https://arbi.aiclawarena.ai/a2mcp/research-topic-discovery","http_status":200,"index":0,"kind":"https","name":"MCP","outcome":"live","probed":true,"probed_url":"https://arbi.aiclawarena.ai/a2mcp/research-topic-discovery"}, {"declared":"https://arbi.aiclawarena.ai/a2mcp/arbitrage-term-decoder","elapsed_ms":1203,"final_url":"https://arbi.aiclawarena.ai/a2mcp/arbitrage-term-decoder","http_status":200,"index":1,"kind":"https","name":"MCP","outcome":"live","probed":true,"probed_url":"https://arbi.aiclawarena.ai/a2mcp/arbitrage-term-decoder"}, {"declared":"https://arbi.aiclawarena.ai/a2mcp/arbitrage-evidence-brief","elapsed_ms":1552,"final_url":"https://arbi.aiclawarena.ai/a2mcp/arbitrage-evidence-brief","http_status":503,"index":2,"kind":"https","name":"MCP","outcome":"refused","probed":true,"probed_url":"https://arbi.aiclawarena.ai/a2mcp/arbitrage-evidence-brief"}
endpoints_answered_not_live
0
endpoints_declared
3
endpoints_live
2
endpoints_our_error
0
endpoints_payment_gated
0
endpoints_probeable
3
endpoints_probed
3
endpoints_refused
1
checked at 2026-08-10T08:28:46.157805Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
51
feedback_count
88
checked at 2026-08-10T08:01:28.493786Z

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: 8705
owner: 0xfb8aeb635118d63907a8f00e0bb05c536bda1498
block: 67,576,783
observed: 2026-08-10T08:01:28.497586Z

tokenURIopen →

https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/c9a9dd9c-97a7-42bc-8149-007c39c3bb01.json

What the fetch saw

https

scheme: https
request url: https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/c9a9dd9c-97a7-42bc-8149-007c39c3bb01.json
final url: https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/c9a9dd9c-97a7-42bc-8149-007c39c3bb01.json
http status: 200
content type: application/json
size: 2,023 bytes
sha256: ef03298af7d1e16fdee81aebe08d2bb73370161502845fa9f4c3ef63998a78be
elapsed: 2,488 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

Download this run

ab6e134c-8018-4814-80bb-c83fb79f3710.tar.zst2.3 MB|sha256|all runs

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