ax-agent-memory-skills

ax-agent-memory-skills is a skill for Claude Code, Codex from ax-llm/ax. It costs 128 tokens per session (5,078 once invoked), scanned A, original, Apache-2.0.

A guide for giving Ax agents reusable memories, searchable reference material, and skill instructions loaded when needed. It covers catalogs, retrieval callbacks, and context maps for repeated work.

In plain words
What is it for?
Use it to add memory search, document or code retrieval, dynamic skill loading, or a persistent orientation cache across agent runs.
Why use it?
An agent may need information that does not fit in every prompt, or may repeatedly inspect the same large collection of documents or code. These tools help it find relevant context without loading everything each time.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it to add memory search, document or code retrieval, dynamic skill loading, or a persistent orientation cache across agent runs.

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Install with agentmods
npx agentmods add skills/ax-llm/ax/ax-agent-memory-skills
About the project

Ax is a TypeScript-first programming framework for building applications with large language models through typed generation, agents, workflows, and optimization tools. It is intended for developers who want one model for LLM programs across TypeScript, Python, Java, C++, Go, Rust, and other runtimes.

ax-llm/ax · 2,894 stars · on GitHub · axllm.dev

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add ax-llm/ax --skill ax-agent-memory-skills
Clone the repo
git clone --depth 1 https://github.com/ax-llm/ax

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for ax-agent-memory-skills

README.md
[![agentmods](https://agentmods.dev/badge/skills/ax-llm/ax/ax-agent-memory-skills/github.svg)](https://agentmods.dev/skills/ax-llm/ax/ax-agent-memory-skills)
Your own site
<a href="https://agentmods.dev/skills/ax-llm/ax/ax-agent-memory-skills"><img src="https://agentmods.dev/badge/skills/ax-llm/ax/ax-agent-memory-skills/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for ax-agent-memory-skills

Your own site · 80×15
<a href="https://agentmods.dev/skills/ax-llm/ax/ax-agent-memory-skills"><img src="https://agentmods.dev/badge/skills/ax-llm/ax/ax-agent-memory-skills.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 128 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 5,078 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00128 $0.05078
Opus 5 $0.00064 $0.02539
Sonnet 5 $0.00026 $0.01016
Haiku 4.5 $0.00013 $0.00508

Measured 3d ago against content hash 5be50ab233ea, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

ax-agent-memory-skills scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

website/static/typescript/.well-known/agent-skills/ax-agent-memory-skills/SKILL.md · 444 lines

How it starts

The opening of the file, as written. The whole thing — 444 lines — stays where its author put it; the contents beside it link to each section on GitHub.

AxAgent Memory And Skills Rules (@ax-llm/ax)

Use this skill when an agent needs a persistent context map, task-relevant memory retrieval, or skill guides loaded into the executor prompt on demand. For ordinary agent setup use ax-agent. For RLM runtime policy use ax-agent-rlm. For callbacks and telemetry use ax-agent-observability.

Use These Defaults

  • Use a static skillsCatalog / memoriesCatalog when the skill guides or memories fit in a plain array — Ax then backs discover({ skills }) / recall(...) with a built-in deterministic local search and no host search code is needed.
  • Use onSkillsSearch / onMemoriesSearch when retrieval needs a real backend (vector DB, BM25 service, KV). A host callback always takes precedence over the catalog's built-in search.
  • Use contextMap when repeated runs inspect the same long external context and should accumulate a small orientation cache automatically.
  • recall(...) is available to distiller and executor stages when onMemoriesSearch or a non-empty memoriesCatalog is set.
  • discover({ skills }) is available to the executor when onSkillsSearch or a non-empty skillsCatalog is set.
  • With skillsCatalog, the executor prompt also gains a static ### Available Skills index (id + name + description), so skill discovery is targeted instead of blind.
  • Both recall(...) and discover({ skills }) return void. The loaded content appears on the next turn.
  • Use onLoadedMemories / onLoadedSkills to observe what got loaded.
  • Use onUsedMemories / onUsedSkills to track what the actor says it actually relied on.
  • Child agents do not inherit memory or skills search callbacks; wire them explicitly on every agent that needs the capability.

Context Map

Use contextMap when repeated runs ask different questions over the same long context, document set, or repository. The map is prompt-resident orientation knowledge: structure, concepts, constants, parsing schema, reusable aggregate results, and concrete error patterns. It is not a task-specific answer cache.

Read the full file on GitHub · 444 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago Changed 5be50ab233ea
  2. 6d ago First seen · 444 lines · 128 tokens per session scan A ba35d6f1c636

Subscribe to this mod's changes

ax-agent-memory-skills is a skill published in the GitHub repository ax-llm/ax (2,894 stars, last pushed today), licensed Apache-2.0. It adds 128 tokens to every session and 5,078 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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