Safehold MCP Server

Safehold

Your identity documents, on your machine, shared only when you say so.

What it is

Safehold is a local MCP server that stores passports, visas, driving licences, and other identity documents. When an AI agent needs your passport number to book a flight, it asks Safehold. You see what's being requested and why, then approve or deny. Nothing leaves your device.

Why it exists

Your identity data is scattered across dozens of services you don't control: banks, airlines, government portals, SaaS products. Each one holds a copy and decides for itself how to store it, whether to sell it, and how long it'll stick around. AI agents make this worse. Anything an agent can access, every API it touches can reach too.

Safehold is the alternative. The agent gets a field value. You get a consent prompt instead of a privacy policy. Your files stay where they are.

Open source, so none of this requires trust.

What it isn't

A few things that get confused with safehold but solve a different problem.

1Password, Bitwarden, op CLI

You can stuff a passport into 1Password. The op CLI can read specific fields. There's even an official 1Password MCP server now. So yes, parts of this overlap.

What's different is the trust model. Once your 1Password vault is unlocked, anything with that session can read anything in it. No per-field consent, no "why are you asking for this?" prompt. The vault is built for humans typing passwords, not for agents pulling structured fields with a stated reason.

Safehold gates each field individually, every time, with a purpose attached.

Browser autofill, Apple Passwords, iCloud Keychain

Works fine if your agent is a browser filling a form. Doesn't help when it isn't. Agents working over APIs, CLI tools, or other MCP servers never see the autofill layer, so you end up copy-pasting from a passwords app into a chat anyway. Safehold gives a non-browser agent a way to request a passport number without that detour.

Apple Wallet, Google Wallet, government digital ID apps

Locked to the platform. Apple Wallet won't hand your boarding pass to a third-party agent. mDL pilots and the EU eIDAS wallet are issuer-controlled and narrow in scope. None of them speak MCP, and none will let an agent on your laptop request a field from your driving licence.

Pasting it into the chat

People do this. They drop their passport number into a system prompt, or type it into a message and trust the agent to handle it. The number then lives in chat history, gets shipped to the model provider, and sticks around in their logs. You also have no record of which agent used it for what.

Safehold keeps the document on disk, encrypted, and only releases the one field the agent asked for. Nothing extra ends up in the conversation.

A plain JSON file plus the filesystem MCP

Tempting if you're a developer. ~/identity.json plus the filesystem MCP is three lines of config and done. It also gives every other agent on the box the same access, with no encryption at rest, no logging, and no consent step. The first time that file shows up in a backup or a screen share, you have a problem.

Persona, Stripe Identity, Onfido, Plaid

KYC vendors. You send them your documents, they store them, and partner services query them on your behalf. The model assumes you don't hold the keys. Safehold takes the other direction: documents stay on your machine and you approve every release.

HashiCorp Vault, AWS Secrets Manager, Doppler, Infisical

Built for service secrets, not personal identity. No human-facing consent flow, no schema for documents, and operationally heavy for someone who just wants their passport readable by an agent on their laptop.

How it works

Safehold runs as a stdio MCP server. Documents go into ~/.safehold/vault/ as individual encrypted files. Every retrieval is logged to ~/.safehold/access-log.enc.

Encryption is XChaCha20-Poly1305 via @noble/ciphers, audited by Cure53, no external dependencies. On first run a 32-byte key is written to ~/.safehold/master.key (mode 0600).

Other MCP clients can request specific fields from your documents. You control what gets shared, every time.

Tools (v1)

Every retrieval tool accepts a purpose parameter. That purpose is shown to you at consent time so you always know why a field is being requested.

Prompts (v1)

Safehold also ships ready-made workflow prompts. These show up as slash commands in MCP clients (Claude Desktop, Cursor, Claude Code, Zed) so common tasks don't have to be re-prompted from scratch.

Prompts don't access your data themselves. They tell the calling agent which Safehold tools to call, in what order, and with what purpose. Every retrieval still goes through the normal consent flow.

Skills

safehold-skills is a companion package of Claude Code skills that turn Safehold from a vault into finished workflows: airline check-in, ESTA applications, KYC forms, and so on. Each skill pairs Safehold with a browser MCP and asks for fields one at a time with a precise purpose string.

npx safehold-skills install

Quick Install

Requires Node.js >=20. No build step.

Most clients use the same JSON config — just the file path differs:

{
  "mcpServers": {
    "safehold": {
      "command": "npx",
      "args": ["-y", "safehold@latest"]
    }
  }
}

Clients with slightly different config formats:

Claude Code (CLI)

claude mcp add safehold npx -- -y safehold@latest

VS Code (GitHub Copilot) — uses "servers" key, enable Agent mode in Copilot Chat. Edit .vscode/mcp.json (project) or ~/Library/Application Support/Code/User/mcp.json (global, macOS):

{
  "servers": {
    "safehold": {
      "command": "npx",
      "args": ["-y", "safehold@latest"]
    }
  }
}

Zed — uses "context_servers" key in ~/.config/zed/settings.json:

{
  "context_servers": {
    "safehold": {
      "command": "npx",
      "args": ["-y", "safehold@latest"]
    }
  }
}

OpenAI Codex CLI — TOML format in ~/.codex/config.toml:

[mcp_servers.safehold]
command = "npx"
args = ["-y", "safehold@latest"]

Continue.dev — create .continue/mcpServers/safehold.json (enable Agent mode):

{
  "command": "npx",
  "args": ["-y", "safehold@latest"]
}

Hermes (Nous Research) — YAML format in ~/.hermes/config.yaml:

mcp_servers:
  safehold:
    command: npx
    args: ["-y", "safehold@latest"]

OpenClaw — uses "servers" key in ~/.openclaw/mcp.json:

{
  "servers": {
    "safehold": {
      "command": "npx",
      "args": ["-y", "safehold@latest"]
    }
  }
}

---

Roadmap

• get_travel_authorization - ESTA, eTA, UK ETA, and similar
• get_vaccination_certificate - international vaccination records
• get_residency_permit - BRP, Green Card, and equivalents
• get_birth_certificate
• get_tax_id - NI number, SSN, TFN, and equivalents
• get_proof_of_address - utility bills, bank letters
• get_travel_insurance

Development

npm install
npm test          # run tests
npm run typecheck # type check
npm run build     # compile to dist/
npm run dev       # run directly with tsx (no build step)

Releasing

npm version patch   # bug fix  (0.1.0 → 0.1.1)
npm version minor   # feature  (0.1.0 → 0.2.0)
npm version major   # breaking (0.1.0 → 1.0.0)

Checks that you're on a clean, up-to-date main branch, bumps the version, commits, tags, and pushes. CI publishes to npm.

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Spacetime Technology