A local project-memory add-on for AI coding agents. It records file changes and shell-command results, provides session briefings, and lets the agent search project decisions, warnings, and discoveries across sessions.

Keeping a local record of coding work, reviewing project history, finding past decisions, and optionally consulting multiple models about designs.

It reduces the need to repeat project context after a break or in a new session.

engram — Plugin by coinstax

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.

Claude Code

/plugin marketplace add coinstax/engram

agentmods

npx agentmods add plugins/coinstax/engram/plugin

Clone the repo

git clone --depth 1 https://github.com/coinstax/engram

Made for: Claude Code.

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

When invoked not measured Not applicable: nothing here is loaded into a session.

Security scan A 0 findings. Scan, not verified.

Origin original No closer match found in the catalogue.

Security

Grade A, and why

engram 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 yesterday.

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.

plugin/.claude-plugin/plugin.json · 20 lines

What it actually says

{
  "name": "engram",
  "version": "1.9.1",
  "description": "Local-first project memory for AI coding agents. Passive capture of file mutations and bash outcomes, structured briefings at session start, decisions/warnings/discoveries searchable across sessions, optional multi-model design consultations.",
  "author": {
    "name": "Colin Mackie"
  },
  "homepage": "https://github.com/coinstax/engram",
  "repository": "https://github.com/coinstax/engram",
  "license": "MIT",
  "keywords": [
    "memory",
    "context",
    "project-memory",
    "briefing",
    "session",
    "mcp"
  ]
}

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.

yesterday First seen · 20 lines scan A 33d0f5d50a73

Subscribe to this mod's changes

engram is a plugin published in the GitHub repository coinstax/engram (0 stars, last pushed 1mo ago), 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 2026-08-31.

Data and AI Memory and context Research

engram

Getting it into your agent

Grade A, and why

Nothing flagged

What it actually says

What this file has done since we first saw it

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