Ax Playbook For Rust

Use when writing Rust code with axllm for the playbook() context-engineering surface, evolving task knowledge, online updates, and rendering a playbook into a program.

Install

Install only this skill for Rust:

Shell

npx skills add https://ax-llm.github.io/ax/rust/ --skill 'ax-rust-playbook'

Published skill file: ax-rust-playbook/SKILL.md.

Source

Source: packages/rust/skills/ax-rust-playbook/SKILL.md
Version: 22.0.9

Skill Instructions

This skill helps an agent write Rust code with the generated Ax package axllm. Use the generated package API, examples, and manifests; do not import TypeScript-only APIs unless you are editing the TypeScript package.

When To Use

Grow an evolving context playbook for a program or agent stage with playbook().
Refine a playbook online from live feedback or offline from labeled examples.
Render or persist a playbook and inject it into a program context.

Package Facts

Language: Rust.
Package: axllm.
Package API docs: API.md and axir-api.json.
Capability manifest: axir-capabilities.json.
Runnable examples: examples/.
Real network support: yes.
Scripted no-key transport support: yes.
Runtime profiles: javascript-quickjs.

Core Pattern

Rust

let program = axllm::ax("question:string -> answer:string")?;
let mut pb = axllm::playbook(program, &mut llm, None)?;
pb.evolve(&examples, &mut metric_fn, None)?;

Relevant API Surface

Optimizers: optimize, AxBootstrapFewShot, AxGEPA, OptimizerEngine, OptimizerEvaluator

Guardrails

Start from package examples for exact native syntax before inventing a new call shape.
Use provider-api examples only when the user explicitly has provider credentials available.
Use no-key examples for deterministic local checks and provider request mapping.
Treat AxIR as the source of generated package truth: if package docs disagree with source code, update the compiler and regenerate packages.
Do not copy repo-maintainer skills from tools/*/skills/ into user packages.