NyxID

Connect AI agents to any API, anywhere. Securely. Open-source Agent Connectivity Gateway.

NyxID lets your AI agents (Claude Code, Cursor, n8n) reach any API you have, public or private, and handles all the credentials so your agent never sees a raw key.

flowchart LR
    subgraph Agents["AI Agents"]
        CC[Claude Code]
        CU[Cursor]
        N8[n8n]
    end

    subgraph NyxID["NyxID Gateway"]
        AUTH[OIDC and API Key Auth]
        PROXY[Credential Injection Proxy]
        MCP[MCP Tool Wrapping]
    end

    subgraph Connectivity["Private Reach"]
        NODE[Credential Node]
    end

    subgraph Targets["Connected Services"]
        PUB[Public APIs]
        INT[Internal APIs]
        LOC[Localhost Services]
    end

    CC --> AUTH
    CU --> AUTH
    N8 --> AUTH

    AUTH --> PROXY
    PROXY --> MCP
    PROXY -->|Direct proxy| PUB
    PROXY -->|Private network| INT
    PROXY -->|NAT traversal| NODE
    NODE --> LOC

    classDef agents fill:#eef2ff,stroke:#4f46e5,color:#111827,stroke-width:1.5px;
    classDef gateway fill:#111827,stroke:#22d3ee,color:#ffffff,stroke-width:2px;
    classDef tooling fill:#e0f2fe,stroke:#0284c7,color:#0f172a,stroke-width:1.5px;
    classDef node fill:#fef3c7,stroke:#f59e0b,color:#111827,stroke-width:1.5px;
    classDef targets fill:#ecfeff,stroke:#14b8a6,color:#0f172a,stroke-width:1.5px;

    class CC,CU,N8 agents;
    class AUTH,PROXY gateway;
    class MCP tooling;
    class NODE node;
    class PUB,INT,LOC targets;

NyxID proxies requests, injects credentials automatically, punches through NAT (Network Address Translation) to reach your local services, and wraps any REST API as MCP (Model Context Protocol) tools.

What NyxID Does

• Reach anything — public APIs, internal APIs, localhost services via credential nodes (nyxid node). SSH (Secure Shell) tunneling (nyxid ssh) reaches remote hosts. No VPN (Virtual Private Network), no port forwarding.

• Never expose keys — the reverse proxy injects credentials automatically. Your agent talks to NyxID; NyxID talks to the API with the real key.

• MCP auto-wrap — REST APIs with OpenAPI specs become MCP (Model Context Protocol) tools. nyxid mcp config --tool cursor generates the config. Works with Claude Code, Cursor, VS Code, and any MCP client.

• Per-agent isolation — each agent gets a scoped token. Agent A accesses Slack and Gmail. Agent B only accesses your internal API. Revoke any session without touching the underlying credentials.

• Full identity layer — OIDC (OpenID Connect) / OAuth 2.0 with PKCE (Proof Key for Code Exchange), RBAC (Role-Based Access Control), service accounts, transaction approval (Telegram + mobile push), LLM (Large Language Model) gateway for 7 providers.

Related MCP server: mcpgate

See It in Action

The end-to-end loop is short: connect a service to NyxID once, then any AI agent pointed at your NyxID MCP endpoint can use it — without ever seeing the raw API key.

1. Add a service in the web console — paste your OpenAI (or Anthropic, GitHub, etc.) key once; NyxID stores it encrypted.

2. Wire up your AI tool — claude mcp add --transport http --scope user nyxid http://localhost:3001/mcp (or one-click install for Cursor in Settings → MCP).

3. Use it — Claude Code, Cursor, or any MCP client can now call the service through NyxID. The agent sees the response; never the key.

Why NyxID

Other tools solve parts of this — NyxID combines credential injection, NAT traversal, and MCP tooling in one open-source gateway:

Use Cases

• Give Claude Code access to your private APIs without sharing keys

• Expose internal microservices to AI agents through a single MCP endpoint

• Secure AI agent access to self-hosted tools (Grafana, Jenkins, n8n) behind your firewall

Getting Started

NyxID is used in two phases — install the nyxid CLI client, then pick a workflow. The CLI logs into either the hosted service or a self-hosted backend and can create the Agent Key your workflow needs.

1. Install NyxID

The default "install NyxID" path installs the lightweight nyxid CLI. It is user-scoped, needs no Docker, and does not start a backend server.

Just need the client? Install the CLI. Running your own backend? Self-host with Docker.

bash -c "$(curl -fsSL https://raw.githubusercontent.com/ChronoAIProject/NyxID/main/skills/nyxid/scripts/install.sh)"

After the CLI is installed, choose where it should log in:

Driving NyxID from an AI coding agent? Hand it this single line at any point — it tells the agent to install the nyxid CLI plus the Nyx skill files:

Install nyx skills from https://github.com/ChronoAIProject/NyxID/blob/main/skills/INSTALL.md

The agent reads skills/INSTALL.md end-to-end. It should use the CLI installer by default and only run the Docker backend setup if you explicitly ask to self-host.

Prefer a plugin install? If your agent has a plugin marketplace, add the NyxID skill that way instead of copying files — it stays in sync with the repo on update. The skill still calls the nyxid CLI (installed above), so keep that step.

Claude Code

/plugin marketplace add ChronoAIProject/NyxID
/plugin install nyxid@nyxid

Codex / Cursor — point the runtime at https://github.com/ChronoAIProject/NyxID; it reads .codex-plugin/plugin.json / .cursor-plugin/plugin.json and loads the bundled skills from skills/.

Hosted (Recommended)

Start using NyxID in under a minute — no Docker, no setup.

1. Open nyx.chrono-ai.fun/register in a new tab (Cmd/Ctrl-click, or right-click → Open Link in New Tab) so you can keep this checklist open.

2. Enter invite code: NYX-FGNY85AF

3. Sign in with Google, GitHub, or Apple

4. Open AI Services, add and connect your first external service, and run the API Usage verification curl

5. After the service is verified, wire your AI tool to NyxID's MCP endpoint

The full click-through flow is in Add your first AI Service. Early access is limited to 20 users.

Self-Host

Run your own NyxID backend on your machine. This is the optional server-side path and sets up three Docker containers (database, backend, frontend) — takes about 2 minutes.

Prerequisites: Docker and a bash shell. macOS and Linux already have one — Windows users, see docs/WINDOWS_SETUP.md before going further. Docker is required only for this backend path. Full prereqs and disk budgets are in SETUP.md.

AI-Assisted (Recommended)

If you have Claude Code, Cursor, or any AI coding assistant open, paste the prompt below into it only when you explicitly want a self-hosted backend. It will drive the entire self-host flow for you — preflight, clone, env generation, Docker stack, health check, CLI login, first credential, and MCP config.

I want to self-host the NyxID backend on this machine (the repo is https://github.com/ChronoAIProject/NyxID). This is the Docker server path, not the default CLI install. Walk me through the full setup interactively. If anything fails or I'd prefer to follow the manual steps myself, the full step-by-step with troubleshooting is at https://github.com/ChronoAIProject/NyxID/blob/main/docs/SETUP.md. If I'm on Windows, confirm I'm running from a WSL Ubuntu shell (not native PowerShell or CMD) before proceeding — see https://github.com/ChronoAIProject/NyxID/blob/main/docs/WINDOWS_SETUP.md.

1. Confirm Docker is installed and running before touching anything (check git, docker, openssl, curl, docker compose v2, and docker info).

2. Before cloning or generating anything, check whether NyxID install STATE is present — look for a ./NyxID/.env.dev file OR any Docker volume matching nyx*_mongodb_data (run docker volume ls --format '{{.Name}}' | grep -E 'nyx.*_mongodb_data$' — this catches the default nyxid_mongodb_data plus any variant from a renamed checkout). A bare ./NyxID directory alone does NOT count as "installed" — uninstall.sh leaves the source tree in place, so the directory can exist with no state. If install state is present, stop and tell me the quickstart is a first-time-only install. Ask whether I want to (a) uninstall first — if ./NyxID exists, run cd NyxID && ./scripts/uninstall.sh --yes && cd ..; if only the stale Docker volume is orphaned (checkout was manually deleted earlier), run docker volume ls --format '{{.Name}}' | grep -E 'nyx.*_mongodb_data$' | xargs -r docker volume rm directly. Either path wipes the volume, containers, and (for the script path) .env.dev/keys — destroys all NyxID accounts and encrypted credentials. Or (b) keep my existing install and stop here — I can verify it's still running with curl -sf http://localhost:3001/health. Do not proceed to step 3 until I answer.

3. If ./NyxID already exists (post-uninstall reinstall), cd into it; otherwise clone the repo into the current directory and cd in. Generate .env.dev with a fresh ENCRYPTION_KEY and MONGO_ROOT_PASSWORD (set ENVIRONMENT=development, INVITE_CODE_REQUIRED=false, AUTO_VERIFY_EMAIL=true, and EMAIL_AUTH_ENABLED=true so I don't get stuck on email verification or a locked-down signup page), symlink it to .env.production, create the PKCS#1 JWT signing keys under keys/ (with a LibreSSL fallback using -pubout if -RSAPublicKey_out isn't supported), then pull images and start the stack with docker compose -f docker-compose.yml -f docker-compose.prod.yml --env-file .env.production up -d. Wait up to 90 seconds for http://localhost:3001/health to return 200 — if it times out, tell me to run docker logs nyxid-backend. If the logs show SCRAM failure: Authentication failed, that means the MongoDB volume has a stale password from a previous install — tell me to run ./scripts/uninstall.sh --yes (or, if the checkout is gone, docker volume ls --format '{{.Name}}' | grep -E 'nyx.*_mongodb_data$' | xargs -r docker volume rm to remove any nyx-flavored orphan volume) and retry. Show me the generated ENCRYPTION_KEY so I can back it up.

4. Tell me to open http://localhost:3000 and register my account (no email verification needed — accounts are auto-verified in dev mode), and wait until I confirm I've done that.

5. Ensure the nyxid CLI is available. If it is not installed, ask me whether I want to install the nyxid CLI plus the Nyx skill so you can drive NyxID from the terminal afterwards. Explain that the installer downloads a roughly 10 MB prebuilt binary plus a small set of skill files (no Rust toolchain required), installs the CLI into a versioned layout with rollback support, and that only unsupported OS/arch combinations fall back to a Rust source build. If I say yes, follow the install manifest at https://raw.githubusercontent.com/ChronoAIProject/NyxID/main/skills/INSTALL.md end-to-end (it installs the CLI under ~/.local/share/nyxid/, drops the skill into your skill directory, and tells you to export PATH="$HOME/.local/bin:$PATH" if needed). Then verify with nyxid doctor, log me in with nyxid login --base-url http://localhost:3001, add my OpenAI key with nyxid service add llm-openai --credential-env OPENAI_API_KEY, and verify with nyxid proxy request <slug> models using the slug the previous service add command printed under Slug: (typically llm-openai, but suffixed if I already had a service with that slug). If I do not want the CLI, walk me through adding the same OpenAI credential in the web console instead.

6. Finish by connecting my AI tool to NyxID's MCP endpoint at http://localhost:3001/mcp. For Claude Code: claude mcp add --transport http --scope user nyxid http://localhost:3001/mcp. For Codex: codex mcp add nyxid --url http://localhost:3001/mcp. For Cursor: open Settings > MCP in the web console and click Install to Cursor.

Manual Setup

Prefer to run the optional backend setup yourself, or need the full troubleshooting guide? Follow docs/SETUP.md (macOS, Linux, or Windows via WSL).

It covers:

• System preflight check — Step 1

• One paste-block install — Step 2

• Register your account — Step 3

• CLI install or verification

• Uninstall & reinstall, orphan volume recovery, and SCRAM failure troubleshooting

Once NyxID is running and you've registered at http://localhost:3000, continue to 2. Pick a workflow.

For production deployment (TLS, custom domain, email verification), see docs/DEPLOYMENT.md.

2. Pick a workflow

With NyxID running and an Agent Key in hand, pick the workflow that matches what you want to build. Each is a step-by-step procedure that ends with a working integration; the four are independent and can be completed in any order.

For a per-interface reference walkthrough that ends with HTTP/1.1 200 from your first proxied call (Web UI · CLI · AI-driven · Direct API), see the Connecting AI Services hub.

Connecting AI Services (interface reference)

Pick a workflow in Getting Started is organized by use case. For an interface-oriented reference that ends with a verified proxy call (HTTP/1.1 200) using your preferred entry point — Web UI, CLI, AI-driven (MCP), or Direct API — see docs/connecting-services/. The hub distinguishes external service credentials from NyxID Agent Keys and links to one walkthrough per interface.

Resources

Contributing

We welcome contributions. See CONTRIBUTING.md.

License

Apache-2.0