MCP server

Vigil — an outside witness for AI agents

com.vigilnotary/vigil

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

Agent leases, signed receipts, watchdogs, and optional paid source-verification evidence.

Website

At a glance

Type

MCP server

Publisher

vigilnotary.com (verified by the MCP Registry)

Status

Working at last check

Tools

26

Token cost

About 5,734 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 vigil https://vigilnotary.com/mcp

Claude Desktop

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

Codex (config.toml)

[mcp_servers.vigil]
url = "https://vigilnotary.com/mcp"

Gemini CLI

{"mcpServers":{"vigil":{"httpUrl":"https://vigilnotary.com/mcp"}}}

Cursor

{"mcpServers":{"vigil":{"url":"https://vigilnotary.com/mcp"}}}

VS Code

{"servers":{"vigil":{"type":"http","url":"https://vigilnotary.com/mcp"}}}

Antigravity

agy mcp add vigil https://vigilnotary.com/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":"vigil","server_url":"https://vigilnotary.com/mcp","require_approval":"always"}

Grok (xAI API tools)

{"type":"mcp","server_label":"vigil","server_url":"https://vigilnotary.com/mcp"}

Tools

• vigil_anchor ~208 tokens
  PRO: anchor the current chain head to OpenTimestamps on demand (the chain is auto-anchored every few hours regardless). Sends the public chain-head digest to external OpenTimestamps calendars; submission is not verified Bitcoin confirmation.
• vigil_anchors ~82 tokens
  Public timestamp submissions to OpenTimestamps calendars. A submission is pending, not an independently verified Bitcoin confirmation. No key required.
• vigil_chain ~136 tokens
  Read a range of receipts to audit chain continuity. Max 1000 per call.
• vigil_delete_watchdog Deletes data · ~219 tokens
  Remove a watchdog. Destructive: deletes its configuration and stops future alerts. No undo or restoration of the previous timer is provided.
• vigil_get_receipt ~102 tokens
  Fetch a receipt by serial number. Public — anyone can read any receipt.
• vigil_grant_lease Changes accounts · ~453 tokens
  Grant a short-lived, Ed25519-signed LEASE authorizing an agent to perform an action until it expires. A customer-run gateway verifies the lease offline (fail-closed) before letting the action through. This is the guard on a money/data-moving action. Free tier: 1 active lease (guarded agent). Securit
• vigil_heartbeat ~229 tokens
  'Still alive.' Reset a watchdog's timer. Call this at least once per interval. Resets the deadline and delivery state, potentially suppressing an overdue alert or rearming delivery.
• vigil_info ~76 tokens
  Service description, the Ed25519 signing pubkey to verify receipts against, current chain head, and free-tier limits. No key required.
• vigil_journal_delete Deletes data · ~226 tokens
  Delete a journal slot. Destructive: removes stored bytes with no undo through the API.
• vigil_journal_get ~220 tokens
  Fetch a journal blob by slug. Returns base64 (decrypt client-side).
• vigil_journal_list ~156 tokens
  List your journal slots (slug, size, last-updated).
• vigil_journal_put ~318 tokens
  Store an opaque blob under a slug (overwrites). Encrypt client-side: the server stores exactly the bytes supplied and cannot enforce client encryption. Send bytes as base64. Free tier: 4 slots, 64KB each. Destructive when the slug exists: previous bytes are replaced with no version history or undo.
• vigil_lease_status ~122 tokens
  Public status of a lease (active / expired / revoked). What a gateway polls for revocation. No key required.
• vigil_leases ~149 tokens
  List your leases and their states.
• vigil_notarize ~391 tokens
  Notarize work: POST the sha256 (64 hex chars) of anything and get back an Ed25519-signed, timestamped, hash-chained, serial-numbered receipt. Chain position orders submitted records; the timestamp is a signed assertion of Vigil's clock. Free tier: 10/day. Irreversibly publishes the digest, label and
• vigil_pricing ~57 tokens
  The plans and per-tier limits (free, dev, pro). No key required.
• vigil_register ~172 tokens
  Create a key. Returns a bearer key shown ONCE — store it; it is your only identity. No email, no account. Starts on the free tier. Creates a persistent identity. The returned key grants full account control; provision it in a trusted client, not a model transcript.
• vigil_renew_lease ~325 tokens
  Extend a lease with a fresh signed token and new expiry. Renewing is how a healthy agent keeps acting; stop renewing (or revoke) and it lapses. Security-sensitive: extends authority and refreshes the offline recheck window. Keep renewal credentials outside the controlled agent.
• vigil_revoke_key Changes accounts · ~210 tokens
  Revoke your own key. It stops authenticating immediately. Irreversible. Irreversible: also revokes the account's leases and deletes its watchdogs. Private journal access is lost; public receipts remain. It does not cancel a Stripe subscription.
• vigil_revoke_lease Changes accounts · ~273 tokens
  Revoke a lease. A compliant v2 gateway refuses the old offline token at recheck_by_ms (at most 30 seconds after issue/renewal), or earlier if it polls revocation. Revocation is not instantaneous. Irreversible for this lease ID; it cannot be renewed again. Already admitted actions are not undone.
• vigil_set_watchdog ~471 tokens
  Arm a dead-man switch. Register an interval and an https webhook; then call vigil_heartbeat before each interval elapses. Miss one and Vigil attempts a signed 'absence' payload to your webhook, retrying failed delivery. Free tier: 1 watchdog. Overwrites an existing watchdog and resets its timer and
• vigil_usage ~162 tokens
  Your current tier, its limits, and how much you've used today. Requires your key.
• vigil_verify_lease ~284 tokens
  Offline, FAIL-CLOSED check of a lease token against a mandatory, independently pinned Ed25519 public key. Returns allow=true only for a valid signature before expiry and recheck_by_ms. It does not authenticate the calling agent, enforce action/amount policy, or query live revocation; a customer gate
• vigil_verify_receipt ~216 tokens
  Verify a receipt's hash and Ed25519 signature against a mandatory, independently pinned Ed25519 public key. The key must not come from the receipt being checked. Returns valid=false for tampering, forgery, a wrong signer, or malformed input. Read-only and local to Vigil.
• vigil_verify_source ~272 tokens
  Paid source-local verification with exact evidence and signed receipt. Does not establish absolute truth. Read price and payment requirements before authorizing; settlement spends USDC irreversibly and there is no automatic refund. Identical tool arguments alone are NOT idempotent: retry with the id
• vigil_watchdog_status ~205 tokens
  Read a watchdog's state: interval, last beat, whether it is overdue, fired, or exhausted.

Browse

• Stripe tools
• Email
• Payments
• Crypto and blockchains

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