Secenv MCP Server

secenv-mcp

MCP (Model Context Protocol) server for centralized secrets management.

Expose secrets.json to Cursor, Claude Desktop, Windsurf, Cline, GitHub Copilot, Codex, and any MCP-compatible editor. Your AI agent can generate .env files on demand, rotate shared keys across projects, and sync secrets to GitHub Actions — without ever exposing plaintext to the model.

Built on top of secenv-cli.

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Available on

The server.json in .well-known/mcp/ is the source of truth for the official MCP registry. PulseMCP and MCP.Directory auto-crawl from it; Glama requires a one-time GitHub OAuth login.

Why?

SecEnv: $0, unlimited projects, shared references, one-line rotation, local AI agent integration, no SaaS dependency.

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Install

npm install -g secenv-mcp

Or use npx (no install):

npx -y secenv-mcp

Prerequisites

1. Private Git repo with secrets.json (see secenv-cli)
2. Run npx secenv-cli --init <repo-url> once to clone the vault locally
3. GitHub CLI (gh) — only required for the sync_github tool

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Use with Cursor / Claude Desktop / Windsurf / Cline

Add to your MCP client config:

{
  "mcpServers": {
    "secenv": {
      "command": "npx",
      "args": ["-y", "secenv-mcp"]
    }
  }
}

Config file locations:

• Cursor: ~/.cursor/mcp.json (or Settings → MCP → Add new global MCP server)
• Claude Desktop (macOS): ~/Library/Application Support/Claude/claude_desktop_config.json
• Claude Desktop (Windows): %APPDATA%\Claude\claude_desktop_config.json
• Windsurf: ~/.codeium/windsurf/mcp_config.json
• Cline (VS Code): VS Code settings.json under "cline.mcpServers"
• Continue.dev: ~/.continue/config.json under "experimental.mcpServers"

Per-project config (recommended)

You can scope secenv to a single project by adding the same JSON to <project>/.cursor/mcp.json or <project>/.vscode/mcp.json. This keeps ~/.secenv/secrets/ isolated to one repo at a time.

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Use with Claude Code

Claude Code has built-in MCP support via the claude CLI:

claude mcp add secenv -- npx -y secenv-mcp

Verify with claude mcp list. The server will be available in all claude sessions.

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Use with Smithery

The official installer for MCP servers. One-line install:

npx -y @smithery/cli install secenv-mcp --client claude
# or
npx -y @smithery/cli install secenv-mcp --client cursor

When prompted, paste your private secrets repo URL.

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Use with GitHub Copilot CLI / VS Code

GitHub Copilot supports MCP via the official @github/copilot-cli wrapper and VS Code's MCP extension.

# .github/copilot/mcp.json or VS Code user settings
{
  "mcpServers": {
    "secenv": {
      "command": "npx",
      "args": ["-y", "secenv-mcp"]
    }
  }
}

For VS Code, install the Copilot MCP extension and add the same config under mcp.servers in your user settings.json.

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Use with OpenAI Codex / ChatGPT

OpenAI's Codex CLI supports MCP since v0.46+:

# ~/.codex/config.toml
[mcp_servers.secenv]
command = "npx"
args = ["-y", "secenv-mcp"]

For ChatGPT (Developer Mode → Apps SDK), see the official Apps SDK docs for connecting remote MCP servers — point it at the HTTP endpoint described below.

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Tools

The list_shared tool never returns plaintext — only masked values (e.g., sk-p••••mnop) so the AI cannot exfiltrate your secrets.

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Transports

The MCP server is designed for local stdio as the primary mode. The secrets vault is read from ~/.secenv/secrets/ which only exists on your machine.

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Remote hosting (free tier)

If you want to expose the server over HTTP (e.g., for a remote LLM or team access), the bundled server supports any Node.js host.

Vercel (Hobby, 1M invocations/month)

npm run build
vercel link
vercel env add SECENV_REPO_URL production
# paste your private repo URL
vercel --prod

Endpoint: https://<your-deployment>.vercel.app/mcp Health: https://<your-deployment>.vercel.app/health

Cloudflare Workers (100K requests/day)

wrangler secret put SECENV_REPO_URL
# paste your private repo URL
wrangler deploy

Render (750 free hours/month)

Click "New Web Service" on Render, import this repo. The included render.yaml configures everything automatically.

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Build a Smithery MCPB bundle

npm run build   # produces dist/index.js (768KB single file)
npm run pack    # produces dist/secenv-mcp.mcpb
npx -y @anthropic-ai/mcpb validate dist/secenv-mcp.mcpb

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Security

• Secret values are never returned by list_shared — only key names with masked values
• All git operations use your local SSH keys
• gh secret set uses stdin — values never appear in process args or shell history
• The MCP server runs locally — your secrets never leave your machine
• For remote deployments, set MCP_API_KEY to require Bearer auth

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Requirements

• Node.js >= 18
• Git
• secenv-cli (installed automatically as a dependency)
• GitHub CLI (gh) — only for the sync_github tool

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Development

npm install
npm test                 # run unit tests
npm run test:tools       # MCP tool tests only
npm run build            # bundle to dist/index.js
npm run pack             # bundle + zip to .mcpb

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License

MIT