Agent

Chess Puzzles

celo|id 9714|owner 0x7b054580aea6b6cbdf30bbbe84777bae623f4d1e

Checks 1–7

A chess puzzle API for AI agents and developers. Provides access to millions of tactical chess puzzles via a REST API. Supports x402 payments and AI-readable documentation at /llms.txt.

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
74443315
chain_id
42220
owner
0x7b054580aea6b6cbdf30bbbe84777bae623f4d1e
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
9714
tx_hash
0x7bcbadfc0f419b1f1efd32306377d2a2233d6703d8d50d8c45ef549ebbe71236
checked at 2026-08-10T07:06:37.408407Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
1376
final_url
https://ipfs.io/ipfs/QmY1LZJski1TPmJAy76rqCLrtjNEiTd2Nvsze2ZqRKDdcb
gateway_attempts
{"error":null,"gateway":"https://ipfs.io/ipfs/","http_status":200}
http_status
200
request_url
https://ipfs.io/ipfs/QmY1LZJski1TPmJAy76rqCLrtjNEiTd2Nvsze2ZqRKDdcb
scheme
ipfs
uri
ipfs://QmY1LZJski1TPmJAy76rqCLrtjNEiTd2Nvsze2ZqRKDdcb
via_gateway
https://ipfs.io/ipfs/
checked at 2026-08-10T07:06:37.408407Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
804
body_sha256
decb63b6f7308e71a7e484c3e496c3fcd3f7f24136cb9d887edf02b1f664e190
content_type
application/json
checked at 2026-08-10T07:06:37.408407Z
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, supportedTrust
must_violations
(empty)
registrations_checked
2
services_field_source
services
services_status
present
should_gaps
services[].version
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-08-10T07:06:37.408407Z
Claims its identity?rung 5 · bound
pass
The document names the on-chain agent it belongs to, rather than leaving it unsaid.
passed
declared_agent_id
9714
declared_chain
42220
declared_registry
eip155:42220:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
2
checked at 2026-08-10T07:06:37.408407Z
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://api.chesspuzzles.xyz","elapsed_ms":595,"final_url":"https://api.chesspuzzles.xyz/","http_status":20… (504 chars — expand)
{"declared":"https://api.chesspuzzles.xyz","elapsed_ms":595,"final_url":"https://api.chesspuzzles.xyz/","http_status":200,"index":0,"kind":"https","name":"custom","outcome":"live","probed":true,"probed_url":"https://api.chesspuzzles.xyz"}, {"declared":"https://api.chesspuzzles.xyz/llms.txt","elapsed_ms":349,"final_url":"https://api.chesspuzzles.xyz/llms.txt","http_status":200,"index":1,"kind":"https","name":"custom","outcome":"live","probed":true,"probed_url":"https://api.chesspuzzles.xyz/llms.txt"}
endpoints_answered_not_live
0
endpoints_declared
2
endpoints_live
2
endpoints_our_error
0
endpoints_payment_gated
0
endpoints_probeable
2
endpoints_probed
2
endpoints_refused
0
checked at 2026-08-10T07:07:52.226139Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
1
feedback_count
4
checked at 2026-08-10T07:06:37.408407Z

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

celo

token id: 9714
owner: 0x7b054580aea6b6cbdf30bbbe84777bae623f4d1e
block: 74,443,315
observed: 2026-08-10T07:06:37.411373Z

tokenURIopen via ipfs.io →

ipfs://QmY1LZJski1TPmJAy76rqCLrtjNEiTd2Nvsze2ZqRKDdcb

What the fetch saw

ipfs

scheme: ipfs
request url: https://ipfs.io/ipfs/QmY1LZJski1TPmJAy76rqCLrtjNEiTd2Nvsze2ZqRKDdcb
final url: https://ipfs.io/ipfs/QmY1LZJski1TPmJAy76rqCLrtjNEiTd2Nvsze2ZqRKDdcb
http status: 200
content type: application/json
size: 804 bytes
sha256: decb63b6f7308e71a7e484c3e496c3fcd3f7f24136cb9d887edf02b1f664e190
elapsed: 1,376 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: 4131a5a1-0461-46ce-b393-bcd825d2113b
chain: celo
pinned block: 74,443,315
agents: 9,765
started: 2026-08-10T06:41:13.909696Z
finished: 2026-08-10T07:06:42.747601Z
checker: 0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- celo   # at block 74443315

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