MCP server

Policy Gate

dev.workers.3labsio.policy-gate/policy-gate

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

Deterministic allow/require_approval/deny verdicts for agent actions, before they happen.

Website Source

At a glance

Type

MCP server

Publisher

Not verified

Status

Working at last check

Tools

4

Token cost

About 681 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 policy-gate https://policy-gate.3labsio.workers.dev/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.policy-gate]
url = "https://policy-gate.3labsio.workers.dev/mcp"

Gemini CLI

{"mcpServers":{"policy-gate":{"httpUrl":"https://policy-gate.3labsio.workers.dev/mcp"}}}

Cursor

{"mcpServers":{"policy-gate":{"url":"https://policy-gate.3labsio.workers.dev/mcp"}}}

VS Code

{"servers":{"policy-gate":{"type":"http","url":"https://policy-gate.3labsio.workers.dev/mcp"}}}

Antigravity

agy mcp add policy-gate https://policy-gate.3labsio.workers.dev/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":"policy-gate","server_url":"https://policy-gate.3labsio.workers.dev/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"policy-gate","server_url":"https://policy-gate.3labsio.workers.dev/mcp"}

Tools

• first_42_sponsor ~80 tokens
  Pay Fieldproof $42. Returns every live rail: Stripe card_uri, EIP-681 usdc_uri, BIP-21 btc_uri, x402 POST /v1/sponsor, Zelle, and GET /v1/invoice. One settlement meets the first-$42 bar.
• policy_check ~477 tokens
  Evaluate a proposed agent action against a policy and return allow / require_approval / deny with the matched rule and rationale. Paid per call via x402 ($0.005 USDC on Base); returns signing instructions when unpaid.
• policy_example ~63 tokens
  Free. Worked allow/require_approval/deny verdicts from the live policy engine, so you can judge the service before paying for it.
• policy_rules ~61 tokens
  Free. The full built-in policy: every tier, rule, condition and rationale. Nothing about how a verdict is reached is hidden.

Browse

• Stripe tools
• Payments
• Invoicing and accounting

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