custena-connect

Connect your AI coding agent to Custena so it can pay HTTP 402 responses on your behalf — with a real spending account, real receipts, and real governance.

Install

npm install -g custena-connect

Or run without installing:

npx custena-connect install

Requires Node.js 20+.

Quick start

custena-connect install

This will:

1. Detect your installed coding agent (Claude Code, OpenAI Codex, OpenClaw — prompts you to pick if more than one is found).
2. Open your browser to sign in to Custena (OAuth 2.0 with PKCE).
3. Register Custena as an MCP server in your agent.
4. Install a skill file describing how to use it (where the host supports skills).
5. Wire up hooks so tool/prompt events are reported to your Custena account (where the host supports hooks).

From there, your agent can call any Custena-wrapped API or MCP server. When a seller returns HTTP 402, your agent pays from your Custena buyer balance — no prompt, no card, no context switch.

Commands

| Command | Description | |---------|-------------| | custena-connect install | Detects your coding agent and wires it up end-to-end. | | custena-connect uninstall | Removes Custena MCP config, hooks, and skill files. | | custena-connect doctor | Checks OAuth token state and adapter health. | | custena-connect hook <event> | Internal. Called by the coding agent's hook system. |

Supported hosts

| Host | MCP | Skill | Hooks | |------|-----|-------|-------| | Claude Code | ✅ | ✅ | ✅ | | OpenAI Codex | ✅ | native (MCP prompts) | — | | OpenClaw | ✅ | ✅ | — | | Cursor | 🔜 Planned | | | | Cline | 🔜 Planned | | | | VS Code Copilot | 🔜 Planned | | |

Want another host? Open an issue.

How it works

• OAuth — custena-connect install runs an OAuth 2.0 Authorization Code + PKCE flow against https://api.custena.com/auth (Keycloak), with a local callback on http://localhost:9874/callback. The resulting token is written to ~/.custena/token.json (mode 0600).
• MCP — Custena's MCP server lives at https://api.custena.com/mcp. The adapter registers it with your host via the host's native MCP config (for Claude Code: claude mcp add --transport http --scope user).
• Hooks — On hosts that support them, custena-connect installs PreToolUse, PostToolUse, UserPromptSubmit, and Stop hooks that forward summaries to Custena for audit and governance. Events are queued locally if the network is unavailable and drained on the next successful call.

Configuration

All configuration has sensible defaults. Override via environment variables if you're pointing at a different Custena environment:

| Variable | Default | Description | |----------|---------|-------------| | CUSTENA_API_URL | https://api.custena.com | Custena API base URL | | CUSTENA_KEYCLOAK_URL | https://api.custena.com/auth/realms/custena | Keycloak realm URL | | CUSTENA_OAUTH_CLIENT_ID | custena-connect-cli | OAuth client ID |

Development

git clone https://github.com/Custena/custena-connect-nodejs.git
cd custena-connect-nodejs
npm install
npm run dev -- install    # run the CLI from source
npm test                   # run the test suite
npm run typecheck
npm run build

Security

• Tokens are stored at ~/.custena/token.json with file mode 0600.
• OAuth uses PKCE; no client secret is embedded.
• Hook payloads are truncated to 4 KB and never include prompt/tool-response bodies in full.

Report security issues privately to [email protected].

License

MIT © Custena