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Agent

AI Security Guard - Security Scanning for Autonomous AI Agents

base|id 21193|owner 0x4b1683872786d72516fbebfc061bfac550e271d2

Checks 1–7

Agents process inputs they don't control: APIs, MCP tools, documents, web content, emails. Each is a potential attack surface. A February 2026 zero-click RCE via calendar invite proved even routine inputs can compromise agents. Five specialized detection experts analyze content before your agent processes it: pattern detection, intent drift analysis, semantic analysis, structure analysis, and code analysis across 8 languages. Covers prompt injection, credential exfiltration, data theft, code injection, social engineering, and 60+ attack patterns. POST /v1/guard with content + intent_contract. Returns verdict, confidence, findings, recommendations. Agent decides: proceed, constrain, escalate, or block. Privacy by design: No API keys (x402 cryptographic payments). Content deleted in 15 minutes. No training on customer data. Zero data retention on AI provider. Services: Content scanning ($0.0015-$0.024), Document analysis (PDF/DOCX), Preflight validation (~10ms), Follow-up Q&A ($0.0125), Security advisory ($0.01). Payment via USDC on Base/Ethereum. Endpoints: /v1/guard, /v1/guard/quote, /v1/document/scan, /v1/guard/preflight, /v1/qa, /v1/advisory https://aisecurityguard.io/v1/skill

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

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
    52281733
    chain_id
    8453
    owner
    0x4b1683872786d72516fbebfc061bfac550e271d2
    registry
    0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
    token_id
    21193
    tx_hash
    0x216b804df1953ac2fc54d860c44c61562cb1cc9c87beecce7fef5d18c3b96aeb

    checked at 2026-10-07T08:38:01.848373Z

  2. Reachable?rung 2 · resolvable

    pass

    The document URL it declared actually answers when fetched.

    passed

    bytes
    2450
    data_uri_variant
    base64
    inline
    true
    scheme
    data
    uri
    data:application/json;base64,ewogICJ0eXBlIjogImh0dHBzOi8vZWlwcy5ldGhlcmV1bS5vcmcvRUlQUy9laXAtODAwNCNyZWdpc3RyYXRpb24tdjE… (3,297 chars — expand)data:application/json;base64,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

    checked at 2026-10-07T08:38:01.848373Z

  3. Readable?rung 3 · parseable

    pass

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

    passed

    body_bytes
    2450
    body_sha256
    be22d766e0e7379593fe322499b93b9bc31e4ae32e9737ecbe0eaa47dbc4f57f
    content_type
    —

    checked at 2026-10-07T08:38:01.848373Z

  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
    services
    services_status
    present
    should_gaps
    services[].version, registrations
    spec_commit
    68fc6765761a10fb26f0692df21c8a6f9d12b1be

    checked at 2026-10-07T08:38:01.848373Z

  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 2026-10-07T08:38:01.848373Z

  6. Answers?rung 6 · live

    pass

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

    passed

    endpoints
    {"declared":"https://aisecurityguard.io/v1/skill","elapsed_ms":502,"final_url":"https://aisecurityguard.io/v1/skill","ht… (505 chars — expand){"declared":"https://aisecurityguard.io/v1/skill","elapsed_ms":502,"final_url":"https://aisecurityguard.io/v1/skill","http_status":200,"index":0,"kind":"https","name":"custom","outcome":"live","probed":true,"probed_url":"https://aisecurityguard.io/v1/skill"}, {"declared":"https://github.com/agntcy/oasf/","elapsed_ms":1377,"final_url":"https://github.com/agntcy/oasf/","http_status":200,"index":1,"kind":"https","name":"OASF","outcome":"live","probed":true,"probed_url":"https://github.com/agntcy/oasf/"}
    endpoints_answered_not_live
    0
    endpoints_declared
    2
    endpoints_live
    2
    endpoints_our_error
    0
    endpoints_payment_gated
    0
    endpoints_probeable
    2
    endpoints_probed
    2
    endpoints_refused
    0

    checked at 2026-10-07T19:37:51.488079Z

  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 2026-10-07T08:38:01.848373Z

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
21193
owner
0x4b1683872786d72516fbebfc061bfac550e271d2
block
52,281,733
observed
2026-10-07T08:38:01.850748Z
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
2,450 bytes
sha256
be22d766e0e7379593fe322499b93b9bc31e4ae32e9737ecbe0eaa47dbc4f57f
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
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 →