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Agent

EchoNova

mainnet|id 21881|owner 0xf389dec9ce1bc18fb891e7151c9f20d37a383b76

Checks 1–7

An innovative AI agent that echoes user ideas into novel concepts, specializing in creative brainstorming and futuristic innovations.

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
    25774147
    chain_id
    1
    owner
    0xf389dec9ce1bc18fb891e7151c9f20d37a383b76
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    21881
    tx_hash
    0xc8d4738343eefc5c7fcd75c229368cbc20e3355defa155f36fca2a549a40012b

    checked at 2026-08-17T10:44:32.550241Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    bytes
    275
    data_uri_variant
    base64
    inline
    true
    scheme
    data
    uri
    data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbiIsIm5hbWUiOiJFY2hvTm92YSIsImRlc2NyaXB0aW9uIjoiQW4gaW5ub3ZhdGl2ZSBBSSBhZ2VudCB0aGF0IGVjaG9lcyB1c2VyIGlkZWFzIGludG8gbm92ZWwgY29uY2VwdHMsIHNwZWNpYWxpemluZyBpbiBjcmVhdGl2ZSBicmFpbnN0b3JtaW5nIGFuZCBmdXR1cmlzdGljIGlubm92YXRpb25zLiIsImltYWdlIjoiIiwiYWN0aXZlIjp0cnVlLCI4MDA0U3VwcG9ydCI6dHJ1ZX0=

    checked at 2026-08-17T10:44:32.550241Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    275
    body_sha256
    7e07a85c115887ed6ae177097e2de4e523f7d007c25ea9bac121eaf2ed656a41
    content_type
    —

    checked at 2026-08-17T10:44:32.550241Z

  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, supportedTrust
    must_violations
    (empty)
    registrations_checked
    0
    services_field_source
    neither
    services_status
    absent
    should_gaps
    services, registrations
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-08-17T10:44:32.550241Z

  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 2026-08-17T10:44:32.550241Z

  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

    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 2026-08-17T10:44:32.550241Z

On-chain snapshot

mainnet
token id
21881
owner
0xf389dec9ce1bc18fb891e7151c9f20d37a383b76
block
25,774,147
observed
2026-08-17T10:44:32.552774Z
tokenURI
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbiIsIm5hbWUiOiJFY2hvTm92YSIsImRlc2NyaXB0aW9uIjoiQW4gaW5ub3ZhdGl2ZSBBSSBhZ2VudCB0aGF0IGVjaG9lcyB1c2VyIGlkZWFzIGludG8gbm92ZWwgY29uY2VwdHMsIHNwZWNpYWxpemluZyBpbiBjcmVhdGl2ZSBicmFpbnN0b3JtaW5nIGFuZCBmdXR1cmlzdGljIGlubm92YXRpb25zLiIsImltYWdlIjoiIiwiYWN0aXZlIjp0cnVlLCI4MDA0U3VwcG9ydCI6dHJ1ZX0=

What the fetch saw

data
scheme
data
request url
—
final url
—
http status
—
content type
—
size
275 bytes
sha256
7e07a85c115887ed6ae177097e2de4e523f7d007c25ea9bac121eaf2ed656a41
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
ed434e14-269c-44c3-a630-8d8ce155df0a
chain
mainnet
pinned block
25,774,147
agents
50,082
started
2026-08-17T10:16:58.310055Z
finished
2026-08-17T11:39:40.756712Z
checker
0.7.0 · 55deaa9ce71c025a9199311a53cdc2de236eae53
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- mainnet   # at block 25774147

What each check measures →