Agent

Duka

celo|id 9679|owner 0x84938be60783b6d82aef3a35d341665558f49fd6

Checks 1–7

Duka is an on-chain payment agent on Celo that lets any merchant accept stablecoin payments (cUSD, USDC, USDT) via QR code. Uses the x402 HTTP payment protocol for challenge/response flows. Supports MiniPay, MetaMask, Valora, and WalletConnect. ERC-8021 attribution tags in every transaction.

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.

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
0x84938be60783b6d82aef3a35d341665558f49fd6
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
9679
tx_hash
0x1f4ffc426133768c8cef4bb155b945df422ea33e907454c984c8bfab7c6a2aa9
checked at 2026-08-10T07:06:23.463068Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
383
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,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
checked at 2026-08-10T07:06:23.463068Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
383
body_sha256
04f3d50eb8070faf0d96198c349d9e1fe261cbc200404e82ed301c3b0fa85e5b
content_type
—
checked at 2026-08-10T07:06:23.463068Z
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 2026-08-10T07:06:23.463068Z
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 2026-08-10T07:06:23.463068Z
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.
Has feedback?rung 7 · attested
fail
At least one on-chain feedback entry names this agent.
did not pass
distinct_authors
0
feedback_count
0
reason
no_feedback
checked at 2026-08-10T07:06:23.463068Z

On-chain snapshot

celo

token id: 9679
owner: 0x84938be60783b6d82aef3a35d341665558f49fd6
block: 74,443,315
observed: 2026-08-10T07:06:23.465650Z

tokenURI

data:application/json;base64,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

What the fetch saw

data

scheme: data
request url: —
final url: —
http status: —
content type: —
size: 383 bytes
sha256: 04f3d50eb8070faf0d96198c349d9e1fe261cbc200404e82ed301c3b0fa85e5b
elapsed: 0 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 · —

Has feedback?rung 7 · attested

On-chain snapshot

What the fetch saw

This run