The Backend MCP server,
connected in one click.
Deterministic pre-trade risk checks for autonomous AI trading agents. Connect the official Backend MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Backend to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http backend-api https://api.collarguardrail.com/mcp-http/mcpRun in your terminal, then restart Claude Code.
Backend · https://api.collarguardrail.com/mcp-http/mcp
What your AI can do with Backend
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “evaluate_trade”: 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.”
“Use “evaluate_trade_paid”: 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 hol.”
“Use “check_token_safety”: Honeypot / contract safety check for any ERC-20 token. Returns a severity classification (safe / warn / danger), the specific risk factors.”
“Use “simulate_balance”: Simulate a wallet's ERC-20 balance after a hypothetical trade using eth_call state override. Read-only: no transaction is ever sent.”
How secure is the Backend MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Backend holds up.
Official endpoint
Operated by Backend (collarguardrail.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Backend adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Backend
Choose Backend in the gate directory. No sign-in needed.
Use it anywhere
Backend's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Backend exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
evaluate_trade — 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
evaluate_trade_paid — 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 hol
check_token_safety — Honeypot / contract safety check for any ERC-20 token. Returns a severity classification (safe / warn / danger), the specific risk factors
simulate_balance — Simulate a wallet's ERC-20 balance after a hypothetical trade using eth_call state override. Read-only: no transaction is ever sent.
get_supported_assets — List every asset in the guardrail's official Robinhood Chain registry, with its canonical contract address.
verify_audit_trail — Verify the tamper-evident audit trail for a wallet's past guardrail decisions.
Who runs the Backend MCP server?
The Backend MCP server at a glance
https://api.collarguardrail.com/mcp-http/mcpQuestions, answered
Is there an official Backend MCP server?
Yes — Backend operates its own remote MCP server at api.collarguardrail.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Backend to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Backend in the directory. No account or sign-in is needed. From then on, Backend's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Backend runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Backend MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Backend in minutes. No credit card required.
Connect more than just Backend
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Backend in: Claude · Claude Code · ChatGPT · Cursor · VS Code