MCP-Secrets-Vault

Security-first secrets vault for MCP servers, Claude Code, Cursor, and AI agents.

Stop hardcoding API keys in .env files and MCP configs. MCP-Secrets-Vault stores credentials encrypted (AES-256-GCM) on your machine and exposes them to AI clients via MCP tools.

Quick Start

npx @gpitrella/mcp-secrets-vault init
# Set VAULT_PASSPHRASE in ~/.mcp-secrets-vault/.env
npx @gpitrella/mcp-secrets-vault set openai_key sk-your-key
npx @gpitrella/mcp-secrets-vault get openai_key

Related MCP server: Credential Vault MCP

Claude Desktop / Cursor

{
  "mcpServers": {
    "secrets-vault": {
      "command": "npx",
      "args": ["-y", "@gpitrella/mcp-secrets-vault"],
      "env": {
        "VAULT_PASSPHRASE": "your-passphrase"
      }
    }
  }
}

MCP Tools

CLI

npx @gpitrella/mcp-secrets-vault init
npx @gpitrella/mcp-secrets-vault set <name> <value> [--workspace=default]
npx @gpitrella/mcp-secrets-vault get <name>
npx @gpitrella/mcp-secrets-vault list
npx @gpitrella/mcp-secrets-vault import .env --workspace=memxus
npx @gpitrella/mcp-secrets-vault export --workspace=memxus
npx @gpitrella/mcp-secrets-vault gen-key

Security

• Bound to 127.0.0.1 only for HTTP (NeighborJack defense)

• AES-256-GCM with Node.js crypto (zero third-party crypto deps)

• Strict Zod validation, additionalProperties: false on all tools

• Audit logs never contain secret values

• All dependencies pinned to exact versions

See docs/SECURITY.md for the threat model.

License

AGPL v3 — See LICENSE.

Vault Cloud (coming soon)

Self-hosted is free forever. Hosted tier with team workspaces, RBAC, and compliance reports.