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context-kernel: Instructions file for Claude Code

CLAUDE.md

context-kernel CLAUDE.md is an instructions file for Claude Code from dkritarth/context-kernel. It costs 638 tokens per session, scanned A, original, MIT.

A set of Claude Code instructions for the context-kernel project, a self-hosted memory service that agents read through an MCP server. It defines project rules, security boundaries, and development conventions.

In plain words
What is it for?
Use it when working on context-kernel so the agent knows its architecture, allowed operations, secrets policy, and standard commands.
Why use it?
It keeps agent changes aligned with the project's data-protection rules, such as separating read and write access and keeping private content out of commits.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions CLAUDE.md; mentions Claude Code.

This is dkritarth/context-kernel's own configuration. It tells Claude Code how to work on context-kernel itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything context-kernel configures →

not rated 1repo 3mo ago A scan 638 tokens original MIT
View source ↗ dkritarth/context-kernel dkritarth.com
Reuse

Borrowing it

Nothing to install: this file belongs to dkritarth/context-kernel. 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/dkritarth/context-kernel/master/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/dkritarth/context-kernel

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.

agentmods badge for context-kernel CLAUDE.md

README.md
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Your own site
<a href="https://agentmods.dev/instructions/dkritarth/context-kernel/claude-md"><img src="https://agentmods.dev/badge/instructions/dkritarth/context-kernel/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.

agentmods 80×15 button for context-kernel CLAUDE.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/dkritarth/context-kernel/claude-md"><img src="https://agentmods.dev/badge/instructions/dkritarth/context-kernel/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 638 This file is loaded in full into every session.
When invoked 638 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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00638 $0.00638
Opus 5.5 $0.00255 $0.00255
Sonnet 5.5 $0.00128 $0.00128
Haiku 4.5 $0.00064 $0.00064

Measured 1mo ago against content hash b7c6fddb268b, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

context-kernel 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 · 60 lines

How it starts

The opening of the file, as written. The whole thing — 60 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md: context-kernel

Working conventions for any Claude Code session in this repo.

What this project is

A personal, self-hostable context memory for LLMs. Hand-curated Markdown is the source of truth; a Cloudflare Worker serves it as a remote MCP server; agents extend it only through an append-only journal that a human promotes by hand. Not a website, not a public API, no UI.

Hard rules (never violate)

  • content/ is sacred and gitignored. It holds the owner's real curated context. Never commit it. Never let an automated process edit it. Only content.example/ (fake templates) is committed.
  • No curated-write tool. MCP exposes read tools + an append-only append_journal. Nothing an agent can call may modify curated context. Promotion is a local, human-run script.
  • Two tokens, two scopes. READ_TOKEN serves context; WRITE_TOKEN gates journal writes. Read token must never reach write tools. Use constant-time token comparison.
  • Secrets stay in Cloudflare. Never hardcode tokens or KV namespace IDs. wrangler.toml (real) and .dev.vars are gitignored; only wrangler.toml.example is committed.
  • No personal data in URLs, query strings, logs, or cache keys.
  • Verify moving APIs against live docs. MCP transport and Cloudflare remote-MCP + Claude connector auth change often. Confirm current shape before implementing; do not guess an API.

Stack

  • Runtime: Cloudflare Workers (V8 isolate). Keep deps minimal.
  • Storage: Cloudflare KV.
  • Language: TypeScript.
  • Protocol: remote MCP over HTTP, dual auth (plain bearer + OAuth via @cloudflare/workers-oauth-provider), both converging on /mcp. See src/worker.ts and src/mcp/oauth.ts for the routing and scope model.

Commands

npm run typecheck
npm test
npm run build      # content/*.md -> artifacts/kv-bulk.json + meta.json
npm run dev        # wrangler dev, reads .dev.vars
npm run promote    # review journal:* entries; never auto-edits content/

Read the full file on GitHub · 60 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. 1mo ago First seen · 60 lines · 638 tokens per session scan A b7c6fddb268b

Subscribe to this mod's changes

context-kernel CLAUDE.md is an instructions file published in the GitHub repository dkritarth/context-kernel (1 stars, last pushed 3mo ago), licensed MIT. It adds 638 tokens to every session, about $0.0026 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.

Building agentsMemory and contextai-agentsclaudecloudflare-kvcloudflare-workerscontext-managementllm-memory
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