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8 clients · secrets stay placeholders

JSON (mcpServers)Claude CodeCodexOpenCodeCursorVS CodeGemini CLIGoose

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

claude mcp add --transport http policy-gate https://policy-gate.3labsio.workers.dev/mcp

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

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "policy-gate": {
      "type": "remote",
      "url": "https://policy-gate.3labsio.workers.dev/mcp",
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "policy-gate": {
      "type": "http",
      "url": "https://policy-gate.3labsio.workers.dev/mcp"
    }
  },
  "deeplink": "cursor://anysphere.cursor-deeplink/mcp/install?name=policy-gate&config=eyJ0eXBlIjoiaHR0cCIsInVybCI6Imh0dHBzOi8vcG9saWN5LWdhdGUuM2xhYnNpby53b3JrZXJzLmRldi9tY3AifQ%3D%3D"
}

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

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

extensions:
  "policy-gate":
    enabled: true
    name: "policy-gate"
    type: streamable_http
    uri: "https://policy-gate.3labsio.workers.dev/mcp"
    timeout: 300

Quality 79 / 100good

protocol75 · weight 25

warn
protocol.modernnewest supported version is 2025-11-25; 2026-07-28 not supported, older versions are deprecated until 2027-07-28
n/a
protocol.statelessonly applies to 2026-07-28 servers
pass
protocol.transportstreamable HTTP
n/a
protocol.list_ttlonly applies to 2026-07-28 servers

authorizationn/a · weight 15

n/a
auth.prm, auth.as_metadata, auth.cimdno remote uses OAuth
n/a
auth.secret_in_urlno templated URL

tool hygiene71 · weight 30

pass
tools.descriptionsevery tool has a description
pass
tools.description_lengthdescriptions are concise
pass
tools.schemasevery tool has an object input schema
fail
tools.annotationsno tool declares readOnlyHint or destructiveHint, so clients cannot tell safe calls from risky ones
fail
tools.directory_hintsno tool declares all four of readOnlyHint, destructiveHint, idempotentHint and openWorldHint; missing: policy_rules (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); policy_example (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); policy_check (readOnlyHint, destructiveHint, idempotentHint, openWorldHint); …
pass
tools.token_costabout 555 tokens to load every tool
pass
tools.api_dumptools are not a one-to-one API dump

stability100 · weight 15

pass
stability.changesno tool changes in 30 days
pass
stability.rug_pullno tool changed its meaning under the same name

dependenciesn/a · weight 15

n/a
deps.known_vulns, deps.mcp_sdk_version, deps.resolvableno npm or PyPI package

4 tools, about 555 tokens to load them all · tool set e79f17a7abdb · checked 2026-10-20 14:54 UTC

Tool changes

No tool definition changes recorded. A server's first observation is its baseline; later probes record what changes.

Checks run on what our credential-free, read-only probes observe; tools are never called and no code audit is performed. How it is computed.

Trust 92 / 100

provenance85

liveness98

freshness85

hygiene100

+repository +dns-namespace +website +reachable +uptime-94% ~updated-65d-ago

Derived from observable signals (official registry feed and our own credential-free probes); no code audit performed. How it is computed.

Endpoints

remote	auth	reachable	uptime 30d	p50	protocol	last ok
`https://policy-gate.3labsio.workers.dev/mcp` streamable-http	none	yes	94%	134 ms	2025-11-25	2026-10-20

Tools (4)

`first_42_sponsor`	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`	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`	Free. Worked allow/require_approval/deny verdicts from the live policy engine, so you can judge the service before paying for it.
`policy_rules`	Free. The full built-in policy: every tier, rule, condition and rationale. Nothing about how a verdict is reached is hidden.

Schemas: list_tools.

Similar MCP servers

Official server.json

{
  "name": "dev.workers.3labsio.policy-gate/policy-gate",
  "$schema": "https://static.modelcontextprotocol.io/schemas/2025-09-29/server.schema.json",
  "remotes": [
    {
      "url": "https://policy-gate.3labsio.workers.dev/mcp",
      "type": "streamable-http"
    }
  ],
  "version": "0.2.0",
  "repository": {
    "url": "https://github.com/fieldproofhq/policy-gate",
    "source": "github"
  },
  "websiteUrl": "https://github.com/fieldproofhq/policy-gate",
  "description": "Deterministic allow/require_approval/deny verdicts for agent actions, before they happen."
}