Point your tool here.

1. Get a key

Open the dashboard, create a key and give it a cap. It is shown once, because the gateway keeps only a hash of it. Paste it in place of sk-mr-... below.

2. Set the base URL and key

Most tools read these two environment variables. Set them and point the tool at MagmaRouter with no other change:

export OPENAI_BASE_URL=https://api.magmarouter.com/v1
export OPENAI_API_KEY=sk-mr-...

On Windows PowerShell: $env:OPENAI_BASE_URL='https://api.magmarouter.com/v1' and $env:OPENAI_API_KEY='sk-mr-...'.

Per-tool config

opencode reads its providers from ~/.config/opencode/opencode.json, and takes the key from the environment by name, so the file itself holds no secret:

{
  "provider": {
    "magmarouter": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "MagmaRouter",
      "options": {
        "baseURL": "https://api.magmarouter.com/v1",
        "apiKey": "{env:MAGMAROUTER_API_KEY}"
      },
      "models": {
        "glm-5.3-xploded": {
          "name": "Qwen3 Coder 30B"
        }
      }
    }
  },
  "model": "magmarouter/glm-5.3-xploded"
}

export MAGMAROUTER_API_KEY=sk-mr-...

The DeepSeek Harness has one provider, deepseek-official, and repointing it is a block in ~/.dsh/settings.yaml plus the key in the environment:

llm-deepseek:
  baseURL: https://api.magmarouter.com/v1
  apiKeyEnv: DEEPSEEK_API_KEY
  models:
    - id: glm-5.3-xploded
      name: Qwen3 Coder 30B
      contextWindow: 200000
agent-default-model:
  provider: deepseek-official
  model: glm-5.3-xploded

export DEEPSEEK_API_KEY=sk-mr-...

Every other tool is the same two ideas, a base URL and a key. The guides cover 22 of them, and the docs explain what the gateway does with the request once it arrives.