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Agent

Silverback

mainnet|id 13026|owner 0x3273786c3add9092f3fbf0201013b4532bd780f7

Checks 1–7

Silverback is autonomous DeFi infrastructure for the agent economy. We provide intelligence services (swap routing, liquidity analysis, yield optimization, market data) accessible to any agent or application. Supports x402 micropayments and ERC-8004 on-chain identity. Pay-per-use, no subscriptions.

Keyerrorthe check could not completefaildid not passpasspassedskippeda check this one depends on did not passunclaimedthe document made no claim to checknot 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
    25640407
    chain_id
    1
    owner
    0x3273786c3add9092f3fbf0201013b4532bd780f7
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    13026
    tx_hash
    —

    checked at 2026-07-29T18:54:35.337521Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    bytes
    2764
    data_uri_variant
    base64
    inline
    true
    scheme
    data
    uri
    data:application/json;base64,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

    checked at 2026-07-29T18:54:35.337521Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    2764
    body_sha256
    6d153ae092b47550f983bc5943a44afb905dadebe4fc70395c6f45f0716c7f0c
    content_type
    —

    checked at 2026-07-29T18:54:35.337521Z

  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
    (empty)
    must_violations
    (empty)
    registrations_checked
    2
    services_field_source
    services
    services_status
    present
    should_gaps
    services[].version
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-07-29T18:54:35.337521Z

  5. Claims its identity?rung 5 · bound

    pass

    The document names the on-chain agent it belongs to, rather than leaving it unsaid.

    passed

    declared_agent_id
    13026
    declared_chain
    1
    declared_registry
    eip155:1:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
    match
    true
    registrations_seen
    2

    checked at 2026-07-29T18:54:35.337521Z

  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
    7
    feedback_count
    11

    checked at 2026-07-29T18:54:35.337521Z

On-chain snapshot

mainnet
token id
13026
owner
0x3273786c3add9092f3fbf0201013b4532bd780f7
block
25,640,407
observed
2026-07-29T18:54:35.337850Z
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
2,764 bytes
sha256
6d153ae092b47550f983bc5943a44afb905dadebe4fc70395c6f45f0716c7f0c
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
18a25593-9098-40fd-a0d2-75553c6ee31d
chain
mainnet
pinned block
25,640,407
agents
40,806
started
2026-07-29T18:52:29.451983Z
finished
2026-07-29T19:31:31.563707Z
checker
0.5.0 · 987ce24581f221a1d54a84b47a72d69100214e88-dirty
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- mainnet   # at block 25640407
Download this run

18a25593-9098-40fd-a0d2-75553c6ee31d.tar.zst3.5 MB|sha256|all runs

What each check measures →