MCP server

Collar Guardrail — Pre-Trade Risk Layer

io.github.aiguardrail/backend

Checked 26 Oct 2026, 08:29 UTC · Connected to it and listed its tools

Deterministic pre-trade risk checks for AI agents on Robinhood Chain. Returns allow/warn/deny.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

6

Token cost

About 1,433 tokens per request

Sets up in

Claude Code, Claude Desktop, Codex, Gemini CLI, Cursor, VS Code, Antigravity, ChatGPT, OpenAI API, Grok

Last checked

26 Oct 2026, 08:29 UTC

Connect it to your agent

Add to CursorAdd to VS CodeVS Code Insiders

Opens the app, which shows the server and asks you to confirm. For other apps, copy the setup below.

Claude Code

claude mcp add --transport http backend https://api.collarguardrail.com/mcp-http/mcp

Claude Desktop

Settings → Connectors → Add custom connector, and paste the URL.

Codex (config.toml)

[mcp_servers.backend]
url = "https://api.collarguardrail.com/mcp-http/mcp"

Gemini CLI

{"mcpServers":{"backend":{"httpUrl":"https://api.collarguardrail.com/mcp-http/mcp"}}}

Cursor

{"mcpServers":{"backend":{"url":"https://api.collarguardrail.com/mcp-http/mcp"}}}

VS Code

{"servers":{"backend":{"type":"http","url":"https://api.collarguardrail.com/mcp-http/mcp"}}}

Antigravity

agy mcp add backend https://api.collarguardrail.com/mcp-http/mcp

ChatGPT

Settings → Apps & Connectors → Advanced settings: turn on Developer mode, then Create a connector and paste the URL. Which plans can do this varies.

OpenAI API (Responses tools)

{"type":"mcp","server_label":"backend","server_url":"https://api.collarguardrail.com/mcp-http/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"backend","server_url":"https://api.collarguardrail.com/mcp-http/mcp"}

Tools

• check_token_safety ~233 tokens
  Honeypot / contract safety check for any ERC-20 token. Returns a severity classification (safe / warn / danger), the specific risk factors detected, and the result of a simulated sell. When severity=danger, the next `evaluate_trade` for the same contract is automatically denied regardless of any ot
• evaluate_trade Moves money · ~355 tokens
  Pre-trade risk check for a proposed trade. Call this BEFORE executing any trade and treat a "deny" decision as a hard stop. Evaluated at a fixed Tier 1 ceiling ($5,000 notional). For higher limits, use `evaluate_trade_paid` (Tier 2, $25,000) which settles an x402 payment on-chain.
• evaluate_trade_paid Moves money · ~477 tokens
  Pre-trade risk check gated by an x402 payment. Evaluated as COLR Tier 2: $25,000 notional ceiling, 10/25 per-minute rate limits. No COLR holdings are required — the on-chain payment is the credential. FLOW ---- 1. Call WITHOUT payment_proof → the tool returns a `PaymentRequiredOutput` describing
• get_supported_assets ~67 tokens
  List every asset in the guardrail's official Robinhood Chain registry, with its canonical contract address.
• simulate_balance ~184 tokens
  Simulate a wallet's ERC-20 balance after a hypothetical trade using eth_call state override. Read-only: no transaction is ever sent.
• verify_audit_trail ~117 tokens
  Verify the tamper-evident audit trail for a wallet's past guardrail decisions.

Browse

• GitHub tools
• Payments
• GitHub and code hosting
• Crypto and blockchains

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