What is ace-context-engineering?

A system for improving the information an AI agent keeps and retrieves during its work. It uses short notes, change records, search, data formats, checks, and production scripts.

It is for building agent memory and retrieval workflows, including storing context changes and finding relevant notes with TF-IDF, a text-matching method.

It helps agents maintain useful context across tasks instead of relying on an unstructured or outdated collection of information.

ace-context-engineering — Plugin for Claude Code by jmanhype

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.

Clone the repo

git clone --depth 1 https://github.com/jmanhype/claude-code-plugin-marketplace

Made for: Claude Code.

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.

README.md

[![agentmods](https://agentmods.dev/badge/plugins/jmanhype/claude-code-plugin-marketplace/ace-context-engineering/github.svg)](https://agentmods.dev/plugins/jmanhype/claude-code-plugin-marketplace/ace-context-engineering)

Your own site

<a href="https://agentmods.dev/plugins/jmanhype/claude-code-plugin-marketplace/ace-context-engineering"><img src="https://agentmods.dev/badge/plugins/jmanhype/claude-code-plugin-marketplace/ace-context-engineering/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.

Your own site · 80×15

<a href="https://agentmods.dev/plugins/jmanhype/claude-code-plugin-marketplace/ace-context-engineering"><img src="https://agentmods.dev/badge/plugins/jmanhype/claude-code-plugin-marketplace/ace-context-engineering.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session not measured What this adds to a session before it is invoked.

When invoked not measured The manifest loads nothing itself; its 3 skills cost 102 tokens a session between them.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

ace-context-engineering 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 2mo 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.

.claude-plugin/marketplace.json#ace-context-engineering · 23 lines

What it actually says

{
  "name": "ace-context-engineering",
  "source": "./plugins/ace-context-engineering",
  "description": "Agentic Context Engineering: evolve context through bullets, deltas, and TF-IDF retrieval. Complete with schemas, validation, and production scripts.",
  "version": "1.0.0",
  "author": {
    "name": "jmanhype"
  },
  "license": "CC-BY-4.0",
  "keywords": [
    "context",
    "ace",
    "agentic",
    "retrieval",
    "memory",
    "bullets",
    "deltas",
    "self-improvement"
  ],
  "category": "productivity",
  "homepage": "https://github.com/jmanhype/claude-code-plugin-marketplace",
  "repository": "https://github.com/jmanhype/claude-code-plugin-marketplace"
}

Contents

What it installs

The manifest is a name and a version. 3 skills travel with it, and installing the plugin installs all of them — 102 tokens a session between them. Each is measured on its own page, and each can be installed alone.

Files

What ships with it

1 file beside marketplace.json#ace-context-engineering in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

marketplace.json 5.2 KB

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.

2mo ago First seen · 23 lines scan A a40a3ee7fa34

Subscribe to this mod's changes

ace-context-engineering is a plugin published in the GitHub repository jmanhype/claude-code-plugin-marketplace (28 stars, last pushed yesterday), licensed MIT. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.

Building agents Memory and context

ace-context-engineering next to 6 plugins from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ace-context-engineeringjmanhype/claude-code-plugin-marketplace	Plugin	28	yesterday	MIT	A	—	Claude Code
open-knowledge-vaultglebis/claude-skills	Plugin	409	yesterday	MIT	A	—	Claude Code
knowledge-and-memoryoaustegard/claude-skills	Plugin	158	4d ago	MIT	A	—	Claude Code
paimnott/PAI	Plugin	67	7d ago	MIT	A	—	Claude Code
tree-ring-memoryTerminallyLazy/Tree-Ring-Memory	Plugin	22	1mo ago	MIT	A	—	Claude Code
claude-mega-brainguhcostan/claude-mega-brain	Plugin	127	3mo ago	MIT	A	—	Claude Code
vault-templateballred/obsidian-claude-pkm	Plugin	1.9k	8mo ago	MIT	A	—	Claude Code