What is ctxkeep CLAUDE.md?

A set of Claude Code instructions for a project whose shared context lives in AGENTS.md. It tells the agent to use that shared document so different coding agents follow the same project guidance.

Use it when configuring Claude Code to work on a project with shared architecture, conventions, and other instructions.

Without a common instruction file, agents may use inconsistent assumptions or duplicate project context. Keeping the guidance in one shared place makes it easier to update.

How danish-119/ctxkeep configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to danish-119/ctxkeep. 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/danish-119/ctxkeep/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/danish-119/ctxkeep

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/danish-119/ctxkeep/claude-md/github.svg)](https://agentmods.dev/instructions/danish-119/ctxkeep/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/danish-119/ctxkeep/claude-md"><img src="https://agentmods.dev/badge/instructions/danish-119/ctxkeep/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/danish-119/ctxkeep/claude-md"><img src="https://agentmods.dev/badge/instructions/danish-119/ctxkeep/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 81 This file is loaded in full into every session.

When invoked 81 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	$0.00081	$0.00081
Opus 5.5	$0.00032	$0.00032
Sonnet 5.5	$0.00016	$0.00016
Haiku 4.5	$0.00008	$0.00008

Measured 1mo ago against content hash 8ad5937adf7b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ctxkeep 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 1mo 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 · 8 lines

What it actually says

@AGENTS.md

Project context lives in AGENTS.md, shared by every coding agent; edit that file, not this one.

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.

1mo ago First seen · 8 lines · 81 tokens per session scan A 8ad5937adf7b

Subscribe to this mod's changes

ctxkeep CLAUDE.md is an instructions file published in the GitHub repository danish-119/ctxkeep (2 stars, last pushed 1mo ago), licensed MIT. It adds 81 tokens to every session, about $0.0003 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 2026-10-04.

Writing and docs ai-context claude-md cli developer-tools

ctxkeep CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
ctxkeep CLAUDE.mddanish-119/ctxkeep	Instructions file	2	1mo ago	MIT	A	81	Claude Code
vscode buildNext.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	9,719	GitHub Copilot
next.js AGENTS.mdvercel/next.js	Instructions file	143k	today	MIT	A	7,461	Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	5,516	GitHub Copilot
langchain AGENTS.mdlangchain-ai/langchain	Instructions file	149k	today	MIT	A	4,680	Codex, OpenCode
vscode copilot-instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	3,093	GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harness	Instructions file	275k	3d ago	MIT	A	4,313	Codex, OpenCode

ctxkeep: Instructions file for Claude Code