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Zapp Payment Agent

celo|id 3109|owner 0xefe4e8345e4509bdaf11c2066399bae08f93061a

Checks 1–7

Zapp is a conversational payment agent on Telegram built on the Celo blockchain. Send CELO and USDC, split bills, and manage esusu savings circles by simply chatting — no app install required. Powered by Self Protocol identity verification for fraud prevention.

Keyerrorthe check could not completefaildid not passpasspassedskippeda 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.

  1. Registered?rung 1 · registered

    pass

    The agent exists in the on-chain registry, with an owner and a document URL.

    passed

    block_number
    73985588
    chain_id
    42220
    owner
    0xefe4e8345e4509bdaf11c2066399bae08f93061a
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    3109
    tx_hash
    0xc15ab7dde199b1d85fc4eb2f0413cf272a1f67848bb5e9c2c40b8679ad4c9ca7

    checked at 2026-08-04T23:50:00.961368Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    622
    final_url
    https://ipfs.io/ipfs/QmfPWE6Jajk7LEwu8kSBAbbGfywKmawQssHDUdC2KHALfa
    gateway_attempts
    {"error":null,"gateway":"https://ipfs.io/ipfs/","http_status":200}
    http_status
    200
    request_url
    https://ipfs.io/ipfs/QmfPWE6Jajk7LEwu8kSBAbbGfywKmawQssHDUdC2KHALfa
    scheme
    ipfs
    uri
    ipfs://QmfPWE6Jajk7LEwu8kSBAbbGfywKmawQssHDUdC2KHALfa
    via_gateway
    https://ipfs.io/ipfs/

    checked at 2026-08-04T23:50:00.961368Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    746
    body_sha256
    1cb9fb4f6efdb7b953266d2a7d1b2705d8b699117e2d2ce539be9f2c160bd139
    content_type
    application/json

    checked at 2026-08-04T23:50:00.961368Z

  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
    services
    services_status
    present
    should_gaps
    registrations
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-08-04T23:50:00.961368Z

  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 2026-08-04T23:50:00.961368Z

  6. Answers?rung 6 · live

    unprobeable

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

    unprobeable — no declared endpoint that a probe can reach

    endpoints
    {"declared":"","index":0,"kind":"other","name":"OASF","probed":false}
    endpoints_answered_not_live
    0
    endpoints_declared
    1
    endpoints_live
    0
    endpoints_our_error
    0
    endpoints_payment_gated
    0
    endpoints_probeable
    0
    endpoints_probed
    0
    kinds
    other
    reason
    no_probeable_endpoint

    checked at 2026-08-04T23:56:38.388290Z

  7. Has feedback?rung 7 · attested

    pass

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

    passed

    distinct_authors
    2
    feedback_count
    3

    checked at 2026-08-04T23:50:00.961368Z

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

celo
token id
3109
owner
0xefe4e8345e4509bdaf11c2066399bae08f93061a
block
73,985,588
observed
2026-08-04T23:50:00.963072Z
tokenURIopen via ipfs.io →
ipfs://QmfPWE6Jajk7LEwu8kSBAbbGfywKmawQssHDUdC2KHALfa

What the fetch saw

ipfs
scheme
ipfs
request url
https://ipfs.io/ipfs/QmfPWE6Jajk7LEwu8kSBAbbGfywKmawQssHDUdC2KHALfa
final url
https://ipfs.io/ipfs/QmfPWE6Jajk7LEwu8kSBAbbGfywKmawQssHDUdC2KHALfa
http status
200
content type
application/json
size
746 bytes
sha256
1cb9fb4f6efdb7b953266d2a7d1b2705d8b699117e2d2ce539be9f2c160bd139
elapsed
622 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
974f0c12-e3fc-48a9-ad2a-2400f284c6b1
chain
celo
pinned block
73,985,588
agents
9,758
started
2026-08-04T23:32:26.218902Z
finished
2026-08-04T23:55:46.526567Z
checker
0.6.0 · unknown
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- celo   # at block 73985588

What each check measures →