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Cheetah Agent Security

base|id 59098|owner 0x11f5c1c918cd39d08cfe2c279f43242a8e8190d5

Checks 1–7

Neutral trust and security layer for the agentic internet. Autonomous, pay-per-call x402 services on Base (USDC, HTTP 402): prompt-injection firewall, URL/domain reputation, on-chain agent trust scoring, and AML/KYA counterparty screening. The customer is the agent, not the human. Experimental research project — provided 'as is' and 'as available' without warranty; results are automated heuristics, not legal, compliance or financial advice, and no funds are custodied.

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
    52281733
    chain_id
    8453
    owner
    0x11f5c1c918cd39d08cfe2c279f43242a8e8190d5
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    59098
    tx_hash
    0x3006507c125c75e8becd64aa18e77836c8e8918862b748d7513c5744ef6e9f94

    checked at 2026-10-07T15:57:57.877418Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    elapsed_ms
    806
    final_url
    https://cheetahsecurity.de/.well-known/agent-card.json
    http_status
    200
    request_url
    https://cheetahsecurity.de/.well-known/agent-card.json
    scheme
    https
    uri
    https://cheetahsecurity.de/.well-known/agent-card.json

    checked at 2026-10-07T15:57:57.877418Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    3800
    body_sha256
    6073e5f48bda89482289115b4193ffca795a8c07dff5a6f18fb82597d7136967
    content_type
    application/json

    checked at 2026-10-07T15:57:57.877418Z

  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
    1
    services_field_source
    neither
    services_status
    absent
    should_gaps
    type, image, services
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-10-07T15:57:57.877418Z

  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
    59098
    declared_chain
    8453
    declared_registry
    eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
    match
    true
    registrations_seen
    1

    checked at 2026-10-07T15:57:57.877418Z

  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 2026-10-07T15:57:57.877418Z

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

base
token id
59098
owner
0x11f5c1c918cd39d08cfe2c279f43242a8e8190d5
block
52,281,733
observed
2026-10-07T15:57:57.879677Z
tokenURIopen →
https://cheetahsecurity.de/.well-known/agent-card.json

What the fetch saw

https
scheme
https
request url
https://cheetahsecurity.de/.well-known/agent-card.json
final url
https://cheetahsecurity.de/.well-known/agent-card.json
http status
200
content type
application/json
size
3,800 bytes
sha256
6073e5f48bda89482289115b4193ffca795a8c07dff5a6f18fb82597d7136967
elapsed
806 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
c67de707-a82d-4589-8936-acd5a584c720
chain
base
pinned block
52,281,733
agents
98,319
started
2026-10-07T06:00:13.662398Z
finished
2026-10-07T19:18:37.899751Z
checker
0.7.0 · 10238dd9af44dfa032e6578390569a413a6bb393
spec commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
Reproduce
cargo run -p sweeper -- base   # at block 52281733

What each check measures →

Cheetah Agent Security · base — AgentCount