OpenClaw

Quick setup

Run the setup script in a terminal and choose OpenClaw from its list. It finds OpenClaw's settings, checks your API key, and makes the changes described below for you, backing up each file first. It can set up your other agents in the same run.

curl -fsSL https://www.greentokens.io/setup.sh | bash

The script saves your key as the GREENTOKENS_API_KEY environment variable, which OpenClaw reads. Open a new terminal window afterwards so it picks it up.

Add GreenTokens as a provider

OpenClaw connects to any OpenAI-compatible API as a custom provider. Add GreenTokens to the models section of your OpenClaw config and make one of its models the default:

{
  models: {
    providers: {
      greentokens: {
        baseUrl: "https://api.greentokens.io/v1",
        apiKey: "${GREENTOKENS_API_KEY}",
        api: "openai-completions",
        models: [
          { id: "claude-sonnet-5", name: "Claude Sonnet 5" },
          { id: "claude-opus-5-5", name: "Claude Opus 5.5" },
          { id: "gpt-6-sol", name: "GPT-6 Sol" },
          { id: "glm-5.3", name: "GLM-5.3" }
        ]
      }
    }
  },
  agents: {
    defaults: {
      model: { primary: "greentokens/claude-sonnet-5" }
    }
  }
}

• baseUrl includes /v1, and api: "openai-completions" uses the Chat Completions API.
• ${GREENTOKENS_API_KEY} reads your key from the environment, so it never sits in the file.
• Each id is a GreenTokens model ID from the models page. Reference them as greentokens/model-id.

Or add it from the command line

To merge the provider into your existing config without editing the file by hand:

openclaw config set models.providers.greentokens '{
  "baseUrl": "https://api.greentokens.io/v1",
  "apiKey": "${GREENTOKENS_API_KEY}",
  "api": "openai-completions",
  "models": [{ "id": "claude-sonnet-5", "name": "Claude Sonnet 5" }]
}' --strict-json --merge

Set your key

export GREENTOKENS_API_KEY="sk-gt-…"