AgentCount
Sections
Agent

Primev FastRPC Facilitator

mainnet|id 23175|owner 0x488d87a9a88a6a878b3e7cf0beece8984af9518d

Checks 1–7

Fee-free x402 payment facilitator on Ethereum mainnet. Sub-200ms USDC settlement via mev-commit FastRPC preconfirmations using EIP-3009 transferWithAuthorization.

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

6 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
    26125718
    chain_id
    1
    owner
    0x488d87a9a88a6a878b3e7cf0beece8984af9518d
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    23175
    tx_hash
    0xcfb8619663c3da8337aea5b9868bc7067ec4db2c26132141dce83819caa05415

    checked at 2026-10-05T11:22:30.979615Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    2705
    final_url
    https://x402-facilitator-gold.vercel.app/agent.json
    http_status
    200
    request_url
    https://x402-facilitator-gold.vercel.app/agent.json
    scheme
    https
    uri
    https://x402-facilitator-gold.vercel.app/agent.json

    checked at 2026-10-05T11:22:30.979615Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    841
    body_sha256
    4800d44e6c4da86a3ee3603fe72e5fade80f4177a94d50ca55a8b2e348c0a648
    content_type
    application/json

    checked at 2026-10-05T11:22:30.979615Z

  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
    neither
    services_status
    absent
    should_gaps
    image, services, registrations
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-10-05T11:22:30.979615Z

  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 2026-10-05T11:22:30.979615Z

  6. Answers?rung 6 · —

    not checked

    A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.

    not checked — this check was never asked

    This run never reached this check for this agent.

  7. Has feedback?rung 7 · attested

    pass

    At least one on-chain feedback entry names this agent.

    passed

    distinct_authors
    2
    feedback_count
    2

    checked at 2026-10-05T11:22:30.979615Z

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.
Sends one request to the agent’s own server. Rate limited.

On-chain snapshot

mainnet
token id
23175
owner
0x488d87a9a88a6a878b3e7cf0beece8984af9518d
block
26,125,718
observed
2026-10-05T11:22:30.983168Z
tokenURIopen →
https://x402-facilitator-gold.vercel.app/agent.json

What the fetch saw

https
scheme
https
request url
https://x402-facilitator-gold.vercel.app/agent.json
final url
https://x402-facilitator-gold.vercel.app/agent.json
http status
200
content type
application/json
size
841 bytes
sha256
4800d44e6c4da86a3ee3603fe72e5fade80f4177a94d50ca55a8b2e348c0a648
elapsed
2,705 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
67b76d5d-476f-4d7a-80e1-3580feac5a40
chain
mainnet
pinned block
26,125,718
agents
52,139
started
2026-10-05T10:57:44.538042Z
finished
2026-10-05T14:22:43.904654Z
checker
0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- mainnet   # at block 26125718

What each check measures →