AxGen Structured Generation For Java

Use when writing Java code with dev.axllm:ax for AxGen programs, forward calls, streaming, tools, assertions, traces, usage, and output parsing.

Install

Install only this skill for Java:

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

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

Source

• Source: packages/java/skills/ax-java-gen/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

• Build a structured generation program from a signature.
• Attach typed tools or MCP-derived tools to a generation call.
• Use package examples for no-key scripted clients and provider-api calls.

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

AxGen program = Ax.ax("question:string -> answer:string");
var out = program.forward(llm, java.util.Map.of("question", "What is Ax?"));

Relevant API Surface

• AxGen: Ax.ax, AxGen
• Tools: Ax.fn, Tool
• MCP: AxMCPClient, AxMCPStreamableHTTPTransport, AxMCPStdioTransport

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.