Ax GEPA For Java

Use when writing Java code with dev.axllm:ax for GEPA, Pareto tradeoffs, reflection clients, metric budgets, optimizer state, and artifacts.

Install

Install only this skill for Java:

Shell

npx skills add https://ax-llm.github.io/ax/java/ --skill 'ax-java-gepa'

Published skill file: ax-java-gepa/SKILL.md.

Source

Source: packages/java/skills/ax-java-gepa/SKILL.md
Version: 22.0.3

Skill Instructions

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

When To Use

Run the generated GEPA optimizer or inspect a GEPA artifact.
Use BootstrapFewShot before GEPA when demonstrations should seed optimization.
Track metric budgets, reflection calls, candidate state, and Pareto fronts.

Package Facts

Language: Java.
Package: dev.axllm:ax.
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, python-pyodide.

Core Pattern

Java

AxGEPA engine = new AxGEPA(reflectionClient, java.util.Map.of());
var result = engine.optimize(request, evaluator);

Relevant API Surface

Optimizers: Ax.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.