Agent

FenrirGuard

base|id 24374|owner 0x18fe8fe4060094557082e6b5eb73574931ba1379

Checks 1–7

Provides aggressive threat detection across Base DeFi by monitoring for large-scale attack vectors including governance takeover attempts, oracle manipulation setups, and coordinated liquidation cascades targeting overleveraged positions. Tracks whale wallet movement patterns and cross-protocol position building that historically precedes coordinated market attacks requiring significant capital positioning across multiple venues. Delivers real-time threat alerts as on-chain attestations with attack vector classification and estimated threat severity scores.

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.

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
0x18fe8fe4060094557082e6b5eb73574931ba1379
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
24374
tx_hash
0xa8352b31981701d32bb98601f1741689fe1e44c68873fae685b7cfcd49b579c6
checked at 2026-10-07T08:39:17.016277Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
bytes
1669
data_uri_variant
base64
inline
true
scheme
data
uri
data:application/json;base64,eyJ0eXBlIjoiaHR0cHM6Ly9laXBzLmV0aGVyZXVtLm9yZy9FSVBTL2VpcC04MDA0I3JlZ2lzdHJhdGlvbi12MSIsIm5… (2,257 chars — expand)
data:application/json;base64,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
checked at 2026-10-07T08:39:17.016277Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1669
body_sha256
c53ec868cfd5ecc05a8bd8419ccaaba9fb1d688d3bfa09cfd1017b275d065f7b
content_type
—
checked at 2026-10-07T08:39:17.016277Z
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
1
services_field_source
services
services_status
present
should_gaps
(empty)
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-10-07T08:39:17.016277Z
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
24374
declared_chain
8453
declared_registry
eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
1
checked at 2026-10-07T08:39:17.016277Z
Answers?rung 6 · live
fail
A declared endpoint responds to a probe. Not implemented yet, so nobody passes or fails it.
did not pass
endpoints
{"declared":"https://railway-up-production-cd61.up.railway.app/mcp/agent-5","elapsed_ms":1998,"final_url":"https://railw… (771 chars — expand)
{"declared":"https://railway-up-production-cd61.up.railway.app/mcp/agent-5","elapsed_ms":1998,"final_url":"https://railway-up-production-cd61.up.railway.app/mcp/agent-5","http_status":404,"index":0,"kind":"https","name":"MCP","outcome":"not_live","probed":true,"probed_url":"https://railway-up-production-cd61.up.railway.app/mcp/agent-5"}, {"declared":"https://railway-up-production-cd61.up.railway.app/agents/agent-5/.well-known/agent-card.json","elapsed_ms":1986,"final_url":"https://railway-up-production-cd61.up.railway.app/agents/agent-5/.well-known/agent-card.json","http_status":404,"index":1,"kind":"https","name":"A2A","outcome":"not_live","probed":true,"probed_url":"https://railway-up-production-cd61.up.railway.app/agents/agent-5/.well-known/agent-card.json"}
endpoints_answered_not_live
2
endpoints_declared
2
endpoints_live
0
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
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
11
feedback_count
16
checked at 2026-10-07T08:39:17.016277Z

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.

On-chain snapshot

base

token id: 24374
owner: 0x18fe8fe4060094557082e6b5eb73574931ba1379
block: 52,281,733
observed: 2026-10-07T08:39:17.019075Z

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: 1,669 bytes
sha256: c53ec868cfd5ecc05a8bd8419ccaaba9fb1d688d3bfa09cfd1017b275d065f7b
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 →

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 · live

Has feedback?rung 7 · attested

Check it again, now

On-chain snapshot

What the fetch saw

This run