For Agents

3LC publishes a curated, plain-markdown reference for LLM coding agents (Claude Code, Cursor, etc.) at the conventional llms.txt location.

If you are a human pointing an agent at 3LC, just give it that URL — it’s enough to write correct tlc code without reading the rest of the docs.

The file covers:

• The 3-step recipe (Table → Run → collect metrics)

• Which Table.from_* factory to use for which input format

• When to use TableWriter instead, and how to pick the right schema

• The two ways to collect per-sample metrics, and the built-in collectors

• Common anti-patterns coding agents fall into

• When 3LC is not the right tool

It is regenerated alongside the rest of the docs and is the single source of truth for agent-targeted guidance.