Collar Guardrail

Name: Collar Guardrail
Author: Collar

AgentA2A

Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny verdicts with the reasons attached and a tamper-evident audit hash. MCP callers are evaluated at a fixed Tier 1 ceiling ($5,000 notional). The per-wallet rate limiter shares a 60-seco…

by Collarhomepage ↗v1.0.3

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30-day availability41/41 checks ok

when	check	result	http	latency	detail
6 h ago	a2a card	ok	200	30 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
13 h ago	a2a card	ok	200	33 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
19 h ago	a2a card	ok	200	41 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
25 h ago	a2a card	ok	200	26 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
31 h ago	a2a card	ok	200	37 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
2 d ago	a2a card	ok	200	106 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
2 d ago	a2a card	ok	200	73 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
2 d ago	a2a card	ok	200	31 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
2 d ago	a2a card	ok	200	101 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills
3 d ago	a2a card	ok	200	54 ms	protocol 0.3.0 · card: Collar Guardrail · 6 skills

Declared by sources

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riskguardrailtradingcompliancex402paidsecurityhoneypottokenerc20simulationbalanceregistryassetsrobinhood-chainauditverification

Declared skills

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.
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'.
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.
List supported assets — The official Robinhood Chain asset registry with canonical contract addresses. Resolve a symbol correctly before calling evaluate_trade.
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.

kind A2A Agent Card

name A2A Agent Card

summary A2A Agent Card

version A2A Agent Card

description A2A Agent Card

homepageUrl A2A Agent Card

publisherUrl A2A Agent Card

publisherName A2A Agent Card

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A2A Agent Cardhttps://collarguardrail.com/.well-known/agent-card.json

first seen 11 d ago · fetched 11 d agoopen ↗

Field history (7 recent events)

11 d ago · declared · summary → "Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny ver
11 d ago · declared · description → "Deterministic pre-trade risk layer for autonomous AI trading agents on Robinhood Chain. Returns allow / warn / deny ver
11 d ago · declared · publisherName → "Collar"
11 d ago · declared · publisherUrl → "https://collarguardrail.com"
11 d ago · declared · homepageUrl → "https://collarguardrail.com/agent-docs.html"
11 d ago · declared · version → "1.0.3"
11 d ago · declared · protocols → ["a2a"]

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