> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://docs.asi1.ai/documentation/build-with-asi-one/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://docs.asi1.ai/_mcp/server.

# Build with ASI:One

## Docs

- [ASI:One Models](https://docs.asi1.ai/documentation/models.md): Three models that share one API - asi1 is the general default, asi1-ultra goes deeper, asi1-mini goes faster.
- [Chat Completions API](https://docs.asi1.ai/documentation/build-with-asi-one/chat-completions.md): Send a conversation to /v1/chat/completions, read the reply, stream it, and carry history across turns
- [Responses API](https://docs.asi1.ai/documentation/build-with-asi-one/responses.md): Create, stream, retrieve, chain, cancel and delete responses on /v1/responses
- [Tool Calling](https://docs.asi1.ai/documentation/build-with-asi-one/tool-calling.md): Extend ASI:One models with custom functions and real-world actions through tool selection.
- [Web Search](https://docs.asi1.ai/documentation/build-with-asi-one/web-search.md): Give ASI:One models live web search on both endpoints, and control how much search context they use.
- [Reasoning](https://docs.asi1.ai/documentation/build-with-asi-one/reasoning.md): Let ASI:One models think before they answer, and read the reasoning they produce
- [Structured Data](https://docs.asi1.ai/documentation/build-with-asi-one/structured-data.md): Get structured JSON responses from ASI:One using response_format and JSON schemas
- [Planner Mode](https://docs.asi1.ai/documentation/build-with-asi-one/planner.md): Break a complex request into steps that ASI:One plans, executes against agents and tools, and reports on as it goes
- [OpenAI Compatibility](https://docs.asi1.ai/documentation/build-with-asi-one/openai-compatibility.md): Use ASI:One with the OpenAI client libraries - supported parameters, the two endpoints, and ASI:One's own parameters
- [Errors and Rate Limits](https://docs.asi1.ai/documentation/build-with-asi-one/errors.md): The error envelope, what each status code means, and what to retry