Configures OpenClaw (or Claude Code) to use free AI models from OpenRouter.
Selects the best tool-capable model as primary, builds a ranked fallback chain so
rate limits cause zero interruption, and leaves the rest of the config untouched.
Only chat models are selected — audio, image, video, and embedding models are
automatically filtered out. Models that claim tool support but fail at runtime
(e.g. Gemma) are excluded from tool scoring.
1. API key(s)
# Single key
openclaw config set env.OPENROUTER_API_KEY "sk-or-v1-..."
# Multiple keys (comma-separated) — recommended to avoid daily free-tier limits
openclaw config set env.OPENROUTER_API_KEY "sk-or-v1-KEY1,sk-or-v1-KEY2,sk-or-v1-KEY3"
For OpenClaw inference key rotation, add each key as a separate profile in
~/.openclaw/agents/main/agent/auth-profiles.json:
{
"version": 1,
"profiles": {
"openrouter:default": { "type": "api_key", "provider": "openrouter", "key": "sk-or-v1-KEY1" },
"openrouter:key2": { "type": "api_key", "provider": "openrouter", "key": "sk-or-v1-KEY2" },
"openrouter:key3": { "type": "api_key", "provider": "openrouter", "key": "sk-or-v1-KEY3" }
}
}
> Note: the file is auth-profiles.json (with s), not auth-profile.json.
2. Install
On Debian/Ubuntu servers (Python 3.12+), use the provided script:
cd /path/to/infinity-router
chmod +x install.sh
./install.sh
which infinity-router # should return /usr/local/bin/infinity-router
To uninstall: ./uninstall.sh
# 1. Configure best model + fallback chain
infinity-router pick
# 2. Apply to the running gateway
openclaw gateway restart
For a safer run that validates each model before writing (avoids stale/broken models):
infinity-router pick --validate
openclaw gateway restart
| Command | When to run |
|---|---|
| --------- | ------------- |
infinity-router pick | Set up best free model + fallbacks (most common) |
infinity-router pick --validate | Probe each candidate before writing — avoids "Unknown model" errors |
infinity-router pick -f | Keep current primary, rebuild fallbacks only |
infinity-router pick -c 10 | Use 10 fallbacks instead of default 5 |
infinity-router pick --auth | Also add OpenRouter auth profile to OpenClaw |
infinity-router scan | Browse all available free models |
infinity-router scan -n 30 | Show all 30+ models |
infinity-router use deepseek | Set a specific model (partial name OK) |
infinity-router use qwen3-coder -f | Add model to fallbacks only |
infinity-router use deepseek --validate | Set model and validate fallbacks |
infinity-router bench | Latency-test top 5 models |
infinity-router bench -c 10 | Test top 10 models |
infinity-router status | Show current config, all API keys, cache age |
infinity-router watch | Tail gateway log, auto-rotate + restart on failures |
infinity-router watch --verbose | Also print every matched failure line |
infinity-router watch --notify URL | POST rotation event to webhook on each rotate |
infinity-router reset | Remove model config from target |
infinity-router reset --clear-rl | Also clear rate-limit cooldown records |
Always run openclaw gateway restart after any command that changes config.
infinity-router pick # default: openclaw
infinity-router pick --target claude-code # Claude Code settings.json
Only these keys in ~/.openclaw/openclaw.json:
agents.defaults.model.primary — e.g. openrouter/meta-llama/llama-3.3-70b-instruct:freeagents.defaults.model.fallbacks — e.g. ["openrouter/free", "mistralai/mistral-small:free", …]agents.defaults.models — model allowlistThe first fallback is always openrouter/free — OpenRouter's smart router that
auto-picks the best available model for each request.
infinity-router-daemon # one-shot check
infinity-router-daemon --loop # continuous monitoring
infinity-router-daemon --rotate # force rotate now
infinity-router-daemon --status # rotation history
infinity-router-daemon --clear-rl # reset all cooldowns
Run once a day or when models start failing:
rm -f ~/.infinity-router/model-cache.json
infinity-router pick
openclaw gateway restart
| Problem | Fix |
|---|---|
| --------- | ----- |
infinity-router: command not found | Run ./install.sh from the project directory |
OPENROUTER_API_KEY not set | Get a free key at https://openrouter.ai/keys |
| Config not taking effect | openclaw gateway restart, then /new in Telegram |
Unknown model errors in gateway log | Stale cache — rm ~/.infinity-router/model-cache.json && infinity-router pick --validate |
| Agent gives fake/hallucinated responses | Model doesn't support tools — run infinity-router pick --validate to get a real tool-capable model |
All probes return rate_limit | Daily free quota exhausted — wait for UTC midnight reset, or add more API keys |
HTTP 429: free-models-per-day | Add more keys comma-separated in env.OPENROUTER_API_KEY, or add separate profiles to auth-profiles.json |
Something went wrong in Telegram | Run infinity-router status to see active model, then openclaw gateway restart and /new |
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