AgenticRail Gate

Deterministic sequence enforcement for AI agents: ALLOW or DENY a step before it runs, sealed into an Ed25519-signed, hash-chained receipt that verifies…

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What it can do

  • Evaluate Step: Ask the AgenticRail gate to ALLOW or DENY a single step of an agent sequence BEFORE it runs. The gate is deterministic (same state+request → same verdict) and enforces step order, repla
  • Verify Receipt: CALL THIS AFTER A SEQUENCE SEALS, and after any DENY, passing the sequence_id RETURNED by evaluate_step. An enforced run that is never verified has produced evidence nobody has checked

What data it sees

Do you need an account

No: the server works without sign-in

Deterministic sequence enforcement for AI agents: ALLOW or DENY a step before it runs, sealed into an Ed25519-signed, hash-chained receipt that verifies offline against published keys. No signup, no key needed to try.

How to connect

How to connect AgenticRail Gate to Claude

The server address to paste into Claude settings:

https://agenticrail-gate--kade.run.tools

  1. Open Claude (claude.ai or the desktop app).
  2. Go to Settings → Connectors.
  3. Click Add custom connector.
  4. Paste the server address copied below into Remote MCP server URL and click Add.
  5. In a chat, click + → Connectors and switch the new connector on.

Custom connectors are available on Free, Pro, Max, Team and Enterprise plans (Free is limited to one). On Team and Enterprise an organization Owner adds the connector first under Organization settings → Connectors.

Authorization

After you click Add, a sign-in window for the service opens. Sign in with your own account and approve access. Claude never sees your password.

How to connect AgenticRail Gate to ChatGPT

The server address to paste into ChatGPT settings:

https://agenticrail-gate--kade.run.tools

  1. Open ChatGPT in a browser (chatgpt.com). A Plus, Pro, Business, Enterprise or Edu plan is required.
  2. Turn on developer mode once: Settings → Apps → Advanced settings → Developer mode.
  3. Open Settings → Connectors and click Create.
  4. Fill in the form: Name (anything), Description (one line about what the service does), MCP server URL (copy it below).
  5. Under Authentication choose OAuth if the service requires sign-in, otherwise None. Click Create.
  6. In a new chat open + → Apps/Connectors and enable the connector.

OpenAI has renamed this section before (Connectors → Apps/Plugins). If the label differs, search settings for "developer mode". On Business/Enterprise workspaces an admin must allow custom connectors first.

Authorization

On first use ChatGPT opens the service's sign-in window. Sign in and approve access.

How to connect AgenticRail Gate to Cursor

The server address to paste into Cursor settings:

https://agenticrail-gate--kade.run.tools

Fastest: click Open in Cursor below and confirm the prompt.

Manually:

  1. In Cursor open Settings → Cursor Settings → MCP and click Add new global MCP server.
  2. Paste the JSON copied below into ~/.cursor/mcp.json (per project: .cursor/mcp.json in the repo root).
  3. Save the file. The server appears in the MCP list; authorize it there if asked.

Authorization

If the service needs sign-in, an authorize button appears next to the server in the MCP list.

Server tool list (2)

Raw names from tools/list. Only developers need these.

evaluate_stepAsk the AgenticRail gate to ALLOW or DENY a single step of an agent sequence BEFORE it runs. The gate is deterministic (same state+request → same verdict) and enforces step order, replay protection (nonce), timestamp freshness, and sealing. A denied step must not be executed. Every decision is sealed into an Ed25519-signed, hash-chained receipt. Returns the decision (ALLOW/DENY/HALT), any reason codes, and receipt metadata. Use the demo key by sending no Authorization header, or send Authorization: Bearer <your-key>. NOTE: an anonymous call has its sequence_id rewritten to 'demo-mcp-<your id>'. This is intended, not a leak: it scopes the run to the public demo lane and is how anonymous MCP traffic is identified. Always reuse the sequence_id RETURNED in the response for later steps and for verify_receipt -- the id you sent will not resolve.
verify_receiptCALL THIS AFTER A SEQUENCE SEALS, and after any DENY, passing the sequence_id RETURNED by evaluate_step. An enforced run that is never verified has produced evidence nobody has checked. Fetch the verification report for an AgenticRail sequence and report whether its receipt chain is intact. Demo- sequences need no key; other sequences need Authorization: Bearer <your-key>. Returns the verification_status (VERIFIED_INTACT / CHAIN_BROKEN / …) plus the per-receipt signature, chain-hash, and independent-archive checks. This is the same evidence a third party can verify offline against the published Ed25519 keys — no need to trust AgenticRail.