dev.workers.3labsio.policy-gate/policy-gate
REMOTE · POLICY-GATE.3LABSIO.WORKERS.DEV
Deterministic allow/require_approval/deny verdicts for agent actions, before they happen.
Available components
Last scanned (10 hours ago)
Scores higher than 63% of remote servers
Reachable. Last reached 18 Oct 2026.
Category Security
How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score → Why this is hard to score →
Endpoint Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 4 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS check failed: the endpoint is reachable over plaintext HTTP. See how to fix → View diagnostics → Fail
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability74
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 399 tokens (~99/item across 4 items; 4 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management100
- No destabilizing schema changes in the last 30 days.Pass
Tool Coverage92
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 75% of tool parameters carry a description.Partial
Tool Safety75
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "first_42_sponsor" implies "pay" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 28 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 25 Sept 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 15 Sept 26 +1
- Stability: 0.97 → pass security
- 26 Aug 26 0
- We updated how we score, so this day's move reflects our rubric, not a change to the server See what changed → functional
- 17 Aug 26 0
- The server rewrote its instructions, which are the text every model session reads security
- Schema quality: 66 → 99 ▼ functional
- Tool coverage: 67% → 75% ▲ functional
- Stability: unverified → 0.03 ▲ functional
- New tool “first_42_sponsor” functional
- “policy_check” added an optional parameter “ledger” cosmetic
- “policy_check” reworded the description of “policy_id” cosmetic
- 16 Aug 26 0
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 18 Oct 2026 · Probed https://policy-gate.3labsio.workers.dev/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=3labsio.workers.dev | CN=WE1,O=Google Trust Services,C=US | 8 Oct 2026 | 6 Jan 2027 | ECDSA 256 | ECDSA-SHA256 | 85a9ac310c9eadde131aaf8cead3212d |
| SANs: 3labsio.workers.dev, *.3labsio.workers.dev | ||||||
| CN=WE1,O=Google Trust Services,C=US (CA) | CN=GTS Root R4,O=Google Trust Services LLC,C=US | 13 Dec 2023 | 20 Feb 2029 | ECDSA 256 | ECDSA-SHA384 | 7ff31977972c224a76155d13b6d685e3 |
| CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) | CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE | 15 Nov 2023 | 28 Jan 2028 | ECDSA 384 | SHA256-RSA | 7fe530bf331343bedd821610493d8a1b |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of policy-gate.3labsio.workers.dev. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| dev. | present | 60074 | 8 | Verified |
| workers.dev. | absent | Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation |
Authentication No authorisation required
The endpoint answered without asking for a token. Anyone who knows the URL can reach it.
| Result | No authorisation required |
|---|---|
| HTTP status | 200 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://policy-gate.3labsio.workers.dev/mcp | Verified | 200 | |
| http (plaintext) | http://policy-gate.3labsio.workers.dev/mcp | Served over HTTP | 200 |
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
first_42_sponsor ~70
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.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
policy_check ~181
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.
| Name | Type | Req | Description |
|---|---|---|---|
| ledger | object | – | Optional cumulative exposure for the window. A per-action gate cannot see repetition: 49 payments of $40 each pass a $50 rule individually. Omit it and any policy declaring a cumulative bound returns… |
| policy | object | – | Your own policy document, evaluated instead of ours |
| policy_id | string | – | Built-in policy id; see policy_rules. "default-action-tiers-capped" adds a cumulative spend bound. |
| request | object | yes | – |
No output schema declared.
No examples provided.
policy_example ~37
Free. Worked allow/require_approval/deny verdicts from the live policy engine, so you can judge the service before paying for it.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
policy_rules ~35
Free. The full built-in policy: every tier, rule, condition and rationale. Nothing about how a verdict is reached is hidden.
Input schema present but exposes no named parameters.
No output schema declared.
No examples provided.
How do I install the dev.workers.3labsio.policy-gate/policy-gate MCP server?
dev.workers.3labsio.policy-gate/policy-gate is a hosted endpoint at https://policy-gate.3labsio.workers.dev/mcp, so there is nothing to install locally. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.
remote · policy-gate.3labsio.workers.dev
claude mcp add --transport http dev-workers-3labsio-policy-gate-policy-gate 'https://policy-gate.3labsio.workers.dev/mcp'
What is the dev.workers.3labsio.policy-gate/policy-gate MCP server?
dev.workers.3labsio.policy-gate/policy-gate is an MCP server listed in the public MCP registry as dev.workers.3labsio.policy-gate/policy-gate. Deterministic allow/require_approval/deny verdicts for agent actions, before they happen. This page covers its hosted endpoint (https://policy-gate.3labsio.workers.dev/mcp).
Is the dev.workers.3labsio.policy-gate/policy-gate MCP server safe to use?
dev.workers.3labsio.policy-gate/policy-gate scores 72 out of 100 on VerifyMCP. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.
What tools does the dev.workers.3labsio.policy-gate/policy-gate MCP server expose?
dev.workers.3labsio.policy-gate/policy-gate exposes 4 tools: policy_example, policy_rules, policy_check, first_42_sponsor. Their descriptions and schemas cost roughly 323 tokens of context every time the server is loaded.
Does the dev.workers.3labsio.policy-gate/policy-gate MCP server require authentication?
No. We connected to dev.workers.3labsio.policy-gate/policy-gate without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the dev.workers.3labsio.policy-gate/policy-gate MCP server still maintained?
dev.workers.3labsio.policy-gate/policy-gate is still listed as active in the MCP registry. We last reached this channel on 18 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.