# OtterArk Developer Resources Developer resources for `otterark.com`, also known as OtterArk. ## Start Here - [LLM instructions](https://otterark.com/llms.txt) - [OpenAPI](https://otterark.com/openapi.json) - [Authentication](https://otterark.com/auth.md) - [API reference](https://otterark.com/api.md) - [Free sandbox](https://otterark.com/sandbox) - [MCP manifest](https://otterark.com/.well-known/mcp/manifest.json) - [MCP Apps public discovery view](https://otterark.com/mcp-apps/public-discovery.html) - [Agent ask endpoint](https://otterark.com/ask) ## Common Agent Tasks - Test no-key mock calls through `/sandbox/v1/*`. - Discover public docs through `/.well-known/mcp`. - Use authenticated relay API keys for real provider calls. - Inspect model and tool catalogs through `/api/models/display` and `/api/tools/display`.