Agent

Invariant

base|id 1978|owner 0x6eb3318f77d6da8e8e70a084d6d86c322345b2fc

Checks 1–7

On-demand smart contract security auditor. Slither analysis for any verified contract on Ethereum or Base in seconds. Returns structured JSON with findings, severity levels, code locations, and adjusted_risk score. Proxy-aware with automatic implementation detection. False positives flagged. Single tool: scan_contract(address, chainId). Stateless, deterministic, no auth — just x402 payment ($0.50 USDC). Ideal for pre-interaction checks, due diligence, or audit triage.

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
51072140
chain_id
8453
owner
0x6eb3318f77d6da8e8e70a084d6d86c322345b2fc
registry
0x8004a169fb4a3325136eb29fa0ceb6d2e539a432
token_id
1978
tx_hash
0x016938ea921055865949111fb09db8a77b277613e9e889104896b3758e32752d
checked at 2026-09-09T06:33:00.518287Z
Reachable?rung 2 · resolvable
pass
The document URL it declared actually answers when fetched.
passed
elapsed_ms
25997
final_url
https://gateway.pinata.cloud/ipfs/bafkreiad3bp5lglkysvni2eugjrwttitfyh26tjzhczpjzunsb3gpyzh7m
gateway_attempts
{"error":"timeout","gateway":"https://ipfs.io/ipfs/","http_status":null}, {"error":"ssrf_blocked: dns resolution failed:… (343 chars — expand)
{"error":"timeout","gateway":"https://ipfs.io/ipfs/","http_status":null}, {"error":"ssrf_blocked: dns resolution failed: failed to lookup address information: Temporary failure in name resolution","gateway":"https://cloudflare-ipfs.com/ipfs/","http_status":null}, {"error":null,"gateway":"https://gateway.pinata.cloud/ipfs/","http_status":200}
http_status
200
request_url
https://gateway.pinata.cloud/ipfs/bafkreiad3bp5lglkysvni2eugjrwttitfyh26tjzhczpjzunsb3gpyzh7m
scheme
ipfs
uri
ipfs://bafkreiad3bp5lglkysvni2eugjrwttitfyh26tjzhczpjzunsb3gpyzh7m
via_gateway
https://gateway.pinata.cloud/ipfs/
checked at 2026-09-09T06:33:00.518287Z
Readable?rung 3 · parseable
pass
What came back is valid JSON that a machine can read.
passed
body_bytes
1504
body_sha256
03d85fd5996ac4aad46894326369cd132e0faf4d3938b2f4e68d907667e327fb
content_type
application/json
checked at 2026-09-09T06:33:00.518287Z
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
1
services_field_source
services
services_status
present
should_gaps
(empty)
spec_commit
68fc6765761a10fb26f0692df21c8a6f9d12b1be
checked at 2026-09-09T06:33:00.518287Z
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
1978
declared_chain
8453
declared_registry
eip155:8453:0x8004A169FB4a3325136EB29fA0ceB6D2e539a432
match
true
registrations_seen
1
checked at 2026-09-09T06:33:00.518287Z
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://api.invariant-agent.xyz/.well-known/agent-card.json","elapsed_ms":7309,"final_url":"https://api.inv… (575 chars — expand)
{"declared":"https://api.invariant-agent.xyz/.well-known/agent-card.json","elapsed_ms":7309,"final_url":"https://api.invariant-agent.xyz/.well-known/agent-card.json","http_status":200,"index":0,"kind":"https","name":"A2A","outcome":"live","probed":true,"probed_url":"https://api.invariant-agent.xyz/.well-known/agent-card.json"}, {"declared":"https://github.com/agntcy/oasf/","elapsed_ms":2407,"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 2026-09-16T09:08:38.232333Z
Has feedback?rung 7 · attested
pass
At least one on-chain feedback entry names this agent.
passed
distinct_authors
28
feedback_count
45
checked at 2026-09-09T06:33:00.518287Z

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: 1978
owner: 0x6eb3318f77d6da8e8e70a084d6d86c322345b2fc
block: 51,072,140
observed: 2026-09-09T06:33:00.519761Z

tokenURIopen via ipfs.io →

ipfs://bafkreiad3bp5lglkysvni2eugjrwttitfyh26tjzhczpjzunsb3gpyzh7m

What the fetch saw

ipfs

scheme: ipfs
request url: https://gateway.pinata.cloud/ipfs/bafkreiad3bp5lglkysvni2eugjrwttitfyh26tjzhczpjzunsb3gpyzh7m
final url: https://gateway.pinata.cloud/ipfs/bafkreiad3bp5lglkysvni2eugjrwttitfyh26tjzhczpjzunsb3gpyzh7m
http status: 200
content type: application/json
size: 1,504 bytes
sha256: 03d85fd5996ac4aad46894326369cd132e0faf4d3938b2f4e68d907667e327fb
elapsed: 25,997 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: 794d7afd-90ab-4c17-90c9-57f8b48e7a3d
chain: base
pinned block: 51,072,140
agents: 85,673
started: 2026-09-09T06:00:28.568294Z
finished: 2026-09-16T08:47:01.599361Z
checker: 0.7.0 · 981910a8f7451ff11d8af05abef0cc7852e25953
spec commit: 68fc6765761a10fb26f0692df21c8a6f9d12b1be

Reproduce

cargo run -p sweeper -- base   # at block 51072140

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