What is ctx-memory CLAUDE.md?

Claude Code instructions for ctx-memory, a fully local memory tool for coding agents. It stores session information in SQLite, lets agents search project context, and builds memory from tool calls and messages.

Use it when developing or operating ctx-memory across Claude Code, Codex, Gemini CLI, or OpenCode. It covers setup, commands, build status, hooks, MCP behavior, and project-memory storage.

It helps new sessions recover what was previously changed, decided, or broken without requiring the developer to explain it again. It also documents how the wrapper and memory pipeline work.

How GhadiSaab/ctx-memory configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to GhadiSaab/ctx-memory. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file

curl -O https://raw.githubusercontent.com/GhadiSaab/ctx-memory/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/GhadiSaab/ctx-memory

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/instructions/ghadisaab/ctx-memory/claude-md/github.svg)](https://agentmods.dev/instructions/ghadisaab/ctx-memory/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/ghadisaab/ctx-memory/claude-md"><img src="https://agentmods.dev/badge/instructions/ghadisaab/ctx-memory/claude-md/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/instructions/ghadisaab/ctx-memory/claude-md"><img src="https://agentmods.dev/badge/instructions/ghadisaab/ctx-memory/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 1,711 This file is loaded in full into every session.

When invoked 1,711 The same file — it is already loaded in full.

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.

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.

Model	Per session	Once invoked
Fable 5.1	$0.01711	$0.01711
Opus 5.5	$0.00684	$0.00684
Sonnet 5.5	$0.00342	$0.00342
Haiku 4.5	$0.00171	$0.00171

Measured 2mo ago against content hash 834f55b6834c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ctx-memory CLAUDE.md 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.md · 139 lines

How it starts

The opening of the file, as written. The whole thing — 139 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

What This Is

A fully local CLI tool giving coding agents (Claude Code, Codex, Gemini CLI, OpenCode) persistent memory across sessions. When a new session starts in a project, the agent automatically knows what was worked on before, what decisions were made, what errors were hit, and what files were touched — without re-explaining anything. Zero cloud, zero telemetry. Everything lives in ~/.ctx-memory/store.db.

End-to-end flow:

Shell wrapper intercepts claude (or codex/gemini/opencode), detects project via git remote/path, sets env vars, spawns real agent as child process
MCP server starts alongside — injects a tiny context header (~30 tokens), exposes search_context() and get_project_memory() tools
During session: hooks fire on every tool call (file edits, bash commands, etc.), messages buffered in memory
On session end (clean/Ctrl-C/crash): Layer 1 → Layer 2 → Layer 3 pipeline runs, embedding stored, next session can retrieve all of it

Build Plan Status

Step 1  ✅  Project scaffold + dependencies
Step 2  ✅  Shared types
Step 3  ✅  Database layer (schema, CRUD, vector search, orphan sweep)
Step 5  ✅  Structural feature extractor
Step 6  ✅  Keyword scorer + dictionaries
Step 7  ✅  Positional analyzer
Step 8  ✅  Pattern detector
Step 9  ✅  TF-IDF keyword extractor
Step 10 ✅  Tool event classifier
Step 11 ✅  Weight combiner → Layer1Output
Step 12 ✅  Layer 2 digest generator
Step 13 ✅  Layer 3 project memory merger
Step 14 ✅  Embedding: MiniLM + sqlite-vec
Step 15 ✅  MCP server (5 tools + session end handler) — src/mcp/handlers.ts + src/mcp/index.ts
Step 16 ✅  Integration test — tests/integration/session.test.ts
Step 17 ✅  Shell wrapper — src/wrapper/{detect,project,index}.ts
Step 18 ✅  Per-tool hook plugins — src/hooks/{receiver,claude,gemini,opencode,index}.ts
Step 19 ✅  CLI wizard — src/cli/index.ts (detectInstalledTools, createWrapperSymlink, injectPathLine, forgetProject, getAllProjects + bin entry)

Read the full file on GitHub · 139 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.

2mo ago First seen · 139 lines · 1,711 tokens per session scan A 834f55b6834c

Subscribe to this mod's changes

ctx-memory CLAUDE.md is an instructions file published in the GitHub repository GhadiSaab/ctx-memory (1 stars, last pushed 4mo ago), licensed MIT. It adds 1,711 tokens to every session, about $0.0068 per session on Opus 5.5. 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 2026-08-31.

Memory and context

ctx-memory CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ctx-memory CLAUDE.mdGhadiSaab/ctx-memory	Instructions file	1	4mo ago	MIT	A	1,711	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	yesterday	MIT	A	7,461	Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	yesterday	MIT	A	4,680	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	5,516	GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	yesterday	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	274k	2d ago	MIT	A	4,313	Codex, OpenCode

ctx-memory: Instructions file for Claude Code