OpenClaw OpenRouter Setup: Access 300+ Models

ByL.B. Kaelin

Your OpenClaw agent is powerful, but it’s only as good as the AI model you give it. You’re probably stuck with one default model, and switching feels like a chore.

That’s the problem. You want to test different models for cost, speed, or reasoning, but manually configuring API keys and endpoints for each one is a time sink. You need a single switch that gives you access to everything.

This is where connecting OpenClaw to OpenRouter changes the game. It turns your agent from a single-tool specialist into a master craftsman with a full workshop. With one setup, you unlock over 300 models from providers like Anthropic, Google, and Mistral AI through a single, unified API.

By the end of this guide, you’ll have your OpenClaw openrouter setup complete. You’ll be able to point your agent at any model on OpenRouter’s list with a simple configuration change. We’ll cover getting your API key, updating your `.env` file, and testing the connection so you can start experimenting immediately.

Think of OpenRouter as a universal adapter. Instead of wiring up a dozen different plugs, you install one. Then you can just tell your OpenClaw agent, “Use Claude 3.5 Sonnet today,” or “Try Gemini Flash for this task,” without touching code. That’s the power of combining openclaw openrouter | openrouter openclaw, openclaw model providers.

What You Need Before Starting

This isn’t a long list. You need three things. Think of them as the key, the car, and the garage. The key gets you in, the car does the work, and the garage is where it all happens.

  • A Running OpenClaw Instance: Your agent must be installed and operational. This guide is about giving your existing agent new tools, not building the agent from scratch. If your Claw isn’t running, nothing else works.
  • OpenRouter Account & API Key: This is your universal access pass. OpenRouter is the service that brokers your requests to hundreds of different AI models. You need an account and a key to prove you’re allowed to use it.
  • Basic Terminal Access: You’ll need to edit a configuration file. This is straightforward, but you must be comfortable opening a terminal and using a text editor like nano or vim. If that sounds scary, it’s just typing. We’ll give you the exact commands.

Setting Up Your Environment

We’re going to do two things: get your OpenRouter key and plug it into OpenClaw. This is a five-minute job. The hard part is already done (you have OpenClaw running).

1. Get Your OpenRouter API Key

Your OpenClaw agent needs permission to talk to OpenRouter. The API key is that permission slip.

First, go to the OpenRouter API Keys page and log in. If you don’t have an account, create one. It’s free to start.

Once logged in, click “Create Key.” You can name it “OpenClaw” so you remember what it’s for. Copy the key it gives you. It will look like a long string of random letters and numbers.

Keep this key secret. Treat it like a password. Anyone with this key can spend your OpenRouter credits. You’ll paste it in the next step, but only into your secure environment file.

2. Configure OpenClaw to Use OpenRouter

Now we tell OpenClaw about its new model provider. All configuration lives in a file called .env in your OpenClaw project directory. We’re going to update it.

Your Claw can do this for you. Open your agent’s chat interface and give it this exact instruction block:

You are my OpenClaw agent. Do the following:
1. Navigate to the root directory of the OpenClaw project.
2. Open the `.env` file for editing.
3. Find the lines for `OPENAI_API_KEY` and `OPENAI_BASE_URL`.
4. Comment them out by adding a `#` at the beginning of each line.
5. Add the following new lines to the file:
 OPENROUTER_API_KEY=your-actual-key-here
 OPENAI_API_KEY=${OPENROUTER_API_KEY}
 OPENAI_BASE_URL=https://openrouter.ai/api/v1
 OPENAI_MODEL=openai/gpt-4o-mini
6. Save the file and exit the editor.
7. Tell me when it's done and show me the relevant lines you changed.

Replace your-actual-key-here with the API key you copied from OpenRouter. The agent will edit the file and confirm the changes. It sets OpenRouter as the default endpoint and chooses a sensible starter model.

Manual Fallback: If You Prefer to Edit the File Yourself

If your agent isn’t responding or you want to do it manually, here are the steps. Open your terminal and navigate to your OpenClaw folder.

cd /path/to/your/openclaw-project

Open the .env file with your preferred editor.

nano .env

Find the existing OpenAI configuration lines. They will look something like this:

OPENAI_API_KEY=sk-your-openai-key
OPENAI_BASE_URL=https://api.openai.com/v1

Put a # at the start of those lines to comment them out. Then, add these new lines:

# Original OpenAI config - commented out
# OPENAI_API_KEY=sk-your-openai-key
# OPENAI_BASE_URL=https://api.openai.com/v1

# New OpenRouter config
OPENROUTER_API_KEY=sk-or-xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
OPENAI_API_KEY=${OPENROUTER_API_KEY}
OPENAI_BASE_URL=https://openrouter.ai/api/v1
OPENAI_MODEL=openai/gpt-4o-mini

Save the file. In nano, press Ctrl+X, then Y, then Enter.

3. Restart Your OpenClaw Services

Configuration changes only take effect after a restart. This is like rebooting your computer after installing a new driver.

Your Claw can handle this too. Give it this instruction:

You are my OpenClaw agent. Do the following:
1. Restart the core OpenClaw services to load the new .env configuration.
2. Use the command appropriate for our setup (e.g., `docker-compose restart` if using Docker, or `pm2 restart all` if using PM2).
3. Wait a moment for services to come back online, then confirm they are running.

The agent will run the correct restart command for your installation type and verify everything is back up.

Manual Fallback: If you need to run it yourself, use the command for your setup from the OpenClaw project root.

# If using Docker Compose:
docker-compose restart

# If using PM2:
pm2 restart all

Wait about 30 seconds for the services to fully initialize. You’re now ready to test.

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