Ax LLM Quick Reference For C++

Use when writing C++ code with axllm for using the generated Ax package, factory functions, package docs, examples, and API reference.

Install

Install only this skill for C++:

Shell

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

Published skill file: ax-cpp-llm/SKILL.md.

Source

Source: packages/cpp/skills/ax-cpp-llm/SKILL.md
Version: 22.0.3

Skill Instructions

This skill helps an agent write C++ 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

Start a generated-language Ax program from package docs or examples.
Translate the Ax mental model into the target package without TypeScript-only imports.
Choose the native package entrypoints for signatures, providers, generators, agents, flows, and optimizers.

Package Facts

Language: C++.
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, python-pyodide.

Core Pattern

C++

#include "axllm/axllm.hpp"

auto llm = axllm::ai("openai", { {"apiKey", std::getenv("OPENAI_API_KEY")} });

Relevant API Surface

Signatures: axllm::s, axllm::FieldType, axllm::AxSignature
AxGen: axllm::ax, axllm::AxGen
AxAI: axllm::ai, axllm::OpenAICompatibleClient, axllm::OpenAIResponsesClient, axllm::GoogleGeminiClient, axllm::AnthropicClient, axllm::AxBalancer, axllm::MultiServiceRouter, axllm::ProviderRouter
Agents And RLM: axllm::agent, axllm::AxAgent
Flow: axllm::flow, axllm::AxFlow
Optimizers: axllm::optimize, axllm::AxBootstrapFewShot, axllm::AxGEPA, axllm::OptimizerEngine, axllm::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.