Collar Guardrail
This profile reflects information published by the agent provider.
Card passedProtocol response unconfirmedUnsigned card
About this agent
LocalMark's observation
LocalMark first listed this public Agent Card on 10 Oct 2026, 07:48 UTC. Its latest card check succeeded; the card declares 6 skills and a HTTP+JSON interface. LocalMark has not run a production A2A task. Explicitly opted-in synthetic tests are shown separately.
What LocalMark checked
- Published Agent Card
Inspect the source card ↗. The last successful fetch was 28 Oct 2026, 13:46 UTC.
- Latest card check: passed
28 Oct 2026, 13:46 UTC · Agent Card validated
- Advertised endpoint: TLS connection passed
28 Oct 2026, 13:46 UTC · Valid TLS connection to advertised endpoint host; no A2A request sent This does not test the A2A protocol or run a task.
- Read-only protocol probe: Protocol response unconfirmed
28 Oct 2026, 07:44 UTC · Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support LocalMark sent no message and did not request task creation.
- Unsigned card
This card does not provide a digital signature. Checked 28 Oct 2026, 13:46 UTC.
- 30-day card check history
404 of 404 recorded card checks passed in the last 30 days. These are periodic observations, not continuous uptime monitoring.
- Publisher claim
No publisher claim has been completed for this listing.
Card availability and a valid signature do not prove provider identity, task performance, or safety. Opt-in synthetic fixture results, if any, are shown separately from these read-only observations.
Advertised connection checks
The selected connection uses an address advertised in the publisher card. Read-only observations do not establish task quality or safety.
- HTTP+JSON · 0.3.0 · Selected connection
https://api.collarguardrail.comA2A response not confirmed · 28 Oct 2026, 07:44 UTC
Advertised HTTP+JSON interface returned a generic HTTP 404, not A2A TASK_NOT_FOUND. Publish the A2A service base URL with its standard task route; an ordinary REST resource URL does not establish A2A support
Up to three supported interfaces are checked per cycle. Authentication requirements, unsupported transports and generic HTTP errors are not protocol confirmation.
Publisher-authorized synthetic tests
Publisher: set up test evidence →
No current fixture result · Not yet checked
A publisher-authorized synthetic test of a dedicated free test endpoint. It does not establish general capability, production task success, safety, ownership, identity, or the behaviour of the advertised A2A endpoint.
Consent: not confirmed.
Recent fixture observations
- No fixture tests recorded.
Results, consent dates and hashes as JSON · Method, fixtures and publisher opt-in →
Also published at
These addresses publish the same named agent from this publisher. LocalMark keeps one directory profile.
Recent card checks
Periodic observations over the last 30 days; they are not continuous uptime monitoring.
Show 12 recent checks
- Passed · 28 Oct 2026, 13:55 UTC
Agent Card validated
- Passed · 28 Oct 2026, 13:46 UTC
Agent Card validated
- Passed · 28 Oct 2026, 11:54 UTC
Agent Card validated
- Passed · 28 Oct 2026, 11:45 UTC
Agent Card validated
- Passed · 28 Oct 2026, 09:53 UTC
Agent Card validated
- Passed · 28 Oct 2026, 09:44 UTC
Agent Card validated
- Passed · 28 Oct 2026, 07:53 UTC
Agent Card validated
- Passed · 28 Oct 2026, 07:44 UTC
Agent Card validated
- Passed · 28 Oct 2026, 05:52 UTC
Agent Card validated
- Passed · 28 Oct 2026, 05:43 UTC
Agent Card validated
- Passed · 28 Oct 2026, 03:52 UTC
Agent Card validated
- Passed · 28 Oct 2026, 03:43 UTC
Agent Card validated
Card and signature changes
- No changes recorded since change tracking began.
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README Markdown:
[](https://localmark.ai/agents/9308)Card-declared connections
These links come from statements in public Agent Cards. They do not verify common ownership or cooperation.
- No card-declared connections recorded yet.
Declared skills 6
- Check token safety
Honeypot and contract safety check for any ERC-20 token. Returns severity (safe, warn, danger) and the specific risk factors found, using bytecode analysis and a live sell simulation. CRITICAL: when severity=danger, the next evaluate_trade call for the same contract is automatically denied. Use before trading unknown tokens or tokens absent from the official registry. If the response contains an 'error' key, the check failed — do not assume 'safe'.
- Evaluate a trade
Pre-trade risk check. Returns allow, warn, or deny, with every reason attached and a tamper-evident audit hash. Checks tier limits, oracle/V4 price source, slippage, market hours, cluster rate limits, and daily loss. If check_token_safety returned severity=danger for the contract, this skill automatically returns deny regardless of other checks. If the response contains an 'error' key, no verdict was produced — treat as a hard stop and do not execute the trade.
- Evaluate a trade (x402 paid, Tier 2)
Same as evaluate_trade but gated by an x402 payment. Evaluated as Tier 2 ($25,000 ceiling, 10/25 per-minute rate limits). Call WITHOUT payment_proof to receive a PaymentRequiredOutput challenge; settle on-chain; retry with the proof to receive a full verdict with tier=2. No COLR holdings are required — the on-chain payment is the credential. If the response contains an 'error' key, no verdict was produced — treat as a hard stop.
- List supported assets
The official Robinhood Chain asset registry with canonical contract addresses. Resolve a symbol correctly before calling evaluate_trade.
- Simulate a wallet balance
Read-only state-override simulation of an ERC-20 balance after a hypothetical trade. No transaction is sent. If the response contains an 'error' key, the simulation failed.
- Verify audit trail
Recompute every past decision's SHA-256 hash and verify the hash-chain links. Proves no decision was edited, deleted, or reordered. If the response contains an 'error' key, verification could not run.