Ax Java Agent Memory Skills

AxAgent Memory And Skills For Java

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

• Load memories or skill guides into an RLM agent run.
• Use static skillsCatalog or memoriesCatalog search without host callbacks.
• Preload constructor or forward-time skills with deterministic id merging.
• Track which memories or skills actually influenced a turn.
• Register non-fatal loaded/used observers in native option maps or target callback wrappers.

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

AxAgent helper = Ax.agent("question:string -> answer:string", java.util.Map.of());
var out = helper.forward(llm, java.util.Map.of("question", "How should I proceed?"));

Lifecycle And State

• Constructor skills seed the loaded-skill prompt without firing load observers.
• Forward-time skills override constructor entries by normalized ID and remain loaded for later calls. IDs and names are trimmed, malformed entries are skipped, valid empty content is preserved, and rendered entries are ID-sorted.
• A forward input named memories seeds the first actor turn. Recalled entries merge by ID for that run, then memory state resets before the next forward.
• onSkillsSearch / onMemoriesSearch take precedence over static catalogs. Without a host callback, skillsCatalog / memoriesCatalog use the built-in deterministic lexical ranker.
• onLoadedMemories / onLoadedSkills observe runtime recall and discovery, not constructor presets. onUsedMemories / onUsedSkills emit one consolidated notification per forward. Forward observers override constructor observers, and observer errors are ignored.
• relevanceRanking produces advisory skill and memory hints using the same tokenization, weighting, tie suppression, limits, snippets, and already-loaded exclusion as TypeScript.
• getState() and setState(...) preserve the legacy bare-runtime snapshot shape. Use exportRuntimeState() and restoreRuntimeState(...) for the complete portable agent snapshot, including loaded skills and constructor-preset reapplication. Do not interchange the two shapes.

Runnable Examples

• Provider-backed memory, skill, and observer lifecycle: src/examples/java/long-agents/SkillsAndMemoryAssistantExample.java.
• Catalog-only search and relevance hints: the target's smart-defaults-agent example under src/examples/java/long-agents/.
• Website gallery: https://axllm.dev/java/examples/long-agents/.

Relevant API Surface

• Agents And RLM: Ax.agent, AxAgent, AxAgent.addChildAgent
• Runtime Profiles: ProcessCodeRuntime, RuntimeCapabilities, RuntimeEnvelope, javascript-quickjs, python-pyodide

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.