Agent

Attestra

xlayer|id 4726|owner 0x4e9bb70743a3a33bc47514389167903f70f69a07

Checks 1–7

Attestra is a trust layer for the agentic internet: it probes third-party agent endpoints for uptime and listing accuracy, scans API responses for prompt injection and phishing before LLMs read them, verifies onchain payment receipts, and returns evidence-based trust scores so autonomous agents can check a service before they pay or act on it.

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
71878118
chain_id
196
owner
0x4e9bb70743a3a33bc47514389167903f70f69a07
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
4726
tx_hash
0x78c6199f13df32e32cf125b50826ccb8dea8ce052e3fcc2acc8deed32bb12137
checked at 2026-09-29T02:33:56.245643Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
2804
final_url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/653500cd-99a8-474d-8df1-fae37bcc6e66.json
http_status
200
request_url
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/653500cd-99a8-474d-8df1-fae37bcc6e66.json
scheme
https
uri
https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/653500cd-99a8-474d-8df1-fae37bcc6e66.json
checked at 2026-09-29T02:33:56.245643Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
2183
body_sha256
224a403e12503717bc78cb54cc538cedfa2a9405d22c12b0cb9bd153baaca411
content_type
application/json
checked at 2026-09-29T02:33:56.245643Z
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 2026-09-29T02:33:56.245643Z
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 2026-09-29T02:33:56.245643Z
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://attestra-production.up.railway.app/okxai/x402/sanitize","elapsed_ms":522,"final_url":"https://attes… (1,070 chars — expand)
{"declared":"https://attestra-production.up.railway.app/okxai/x402/sanitize","elapsed_ms":522,"final_url":"https://attestra-production.up.railway.app/okxai/x402/sanitize","http_status":404,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://attestra-production.up.railway.app/okxai/x402/sanitize"}, {"declared":"https://attestra-production.up.railway.app/okxai/x402/attestation/{service_id}","elapsed_ms":381,"final_url":"https://attestra-production.up.railway.app/okxai/x402/attestation/%7Bservice_id%7D","http_status":404,"index":1,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://attestra-production.up.railway.app/okxai/x402/attestation/{service_id}"}, {"declared":"https://attestra-production.up.railway.app/okxai/x402/verify","elapsed_ms":750,"final_url":"https://attestra-production.up.railway.app/okxai/x402/verify","http_status":404,"index":2,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://attestra-production.up.railway.app/okxai/x402/verify"}
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 2026-09-29T03:47:31.663418Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
1
feedback_count
2
checked at 2026-09-29T02:33:56.245643Z

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: 4726
owner: 0x4e9bb70743a3a33bc47514389167903f70f69a07
block: 71,878,118
observed: 2026-09-29T02:33:56.248322Z

tokenURIopen →

https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/653500cd-99a8-474d-8df1-fae37bcc6e66.json

What the fetch saw

https

scheme: https
request url: https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/653500cd-99a8-474d-8df1-fae37bcc6e66.json
final url: https://static.okx.com/cdn/web3/wallet/marketplace/headimages/agent/card/653500cd-99a8-474d-8df1-fae37bcc6e66.json
http status: 200
content type: application/json
size: 2,183 bytes
sha256: 224a403e12503717bc78cb54cc538cedfa2a9405d22c12b0cb9bd153baaca411
elapsed: 2,804 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 →

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