Borrowing it
Nothing to install: this file belongs to Cynrath/agent-context-kit. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Cynrath/agent-context-kit/master/CLAUDE.mdgit clone --depth 1 https://github.com/Cynrath/agent-context-kitWrote 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.
[](https://agentmods.dev/instructions/cynrath/agent-context-kit/claude-md)<a href="https://agentmods.dev/instructions/cynrath/agent-context-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/cynrath/agent-context-kit/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.
<a href="https://agentmods.dev/instructions/cynrath/agent-context-kit/claude-md"><img src="https://agentmods.dev/badge/instructions/cynrath/agent-context-kit/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00919 | $0.00919 |
| Opus 5.5 | $0.00368 | $0.00368 |
| Sonnet 5.5 | $0.00184 | $0.00184 |
| Haiku 4.5 | $0.00092 | $0.00092 |
Grade A, and why
agent-context-kit 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.
How it starts
The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Project Context
Use the same repository rules as AGENTS.md (authoritative for all agents).
Dogfood / ACKit-First
This repository IS AgentContextKit. Every agent session must dogfood the tool.
- Before ANY task: run
node dist/cli/index.js --version,node dist/cli/index.js doctor,node dist/cli/index.js scan --ci. - Create new task docs with
node dist/cli/index.js task "<title>"first, then fill/refine the generated Markdown. - Do not create task docs manually unless the CLI fails. If it fails, record the exact failure.
- All validation uses the repository-built CLI:
node dist/cli/index.js <command>. The old global .NETackittool and anydotnet runinvocation are not valid validation tools on this branch. - Run
node dist/cli/index.js doctorandnode dist/cli/index.js scan --cibefore every final commit. - Never commit generated
.ackit/, reports, SARIF, prompt packs, context exports, package artifacts, packed tarballs, or temp outputs. - Preserve the task-first workflow, legacy-release immutability, and no-network/default safety rules.
Workflow
- Task-first: every implementation change starts from
docs/tasks/active/. - Continuous progress: do not stop between documented tasks; proceed through them in order.
Commit Completeness Hard Rule
- Before any push, run
git statusand confirm the working tree is clean. - Never leave a newly created
.mdtask file, plan, queue row, or test file uncommitted. New files must be added and committed in the same logical commit that creates them, or in an immediately following commit, before any push.
Stack
- TypeScript (strict ESM) + Node.js >= 22
- pnpm (
packageManagerpinned), Vitest, Biome - GitHub Actions:
.github/workflows/ci.yml
Repository Health
- README: yes
- LICENSE: yes
- SECURITY: yes
- Tests: yes
- CI: yes
- Agent instructions: yes
Release Status
- Source-checkout version:
package.jsonis the single source of truth (see Version truth inAGENTS.md— this file stays version-agnostic and never names a current release number). Published stable: the latest immutable npm/GitHub Release.0.1.1/0.1.0remain as historical releases;docs/v0.2.0/**is historical, not current governance. - npm publish, tags, and GitHub Releases are user-authorized actions only (see Controlled-release governance in
AGENTS.md). Automated publishing runs ONLY through the tag-triggered.github/workflows/release.ymlafter explicit user authorization; master pushes never publish. - Legacy .NET line is frozen and immutable: NuGet
AgentContextKit1.0.0-rc.1(exact tag/release/assets/attestations at repository commit258918b33c3d1359aac967604ee524e8b66ddf02) and earlier prereleases remain untouchable; do not republish, reuse, move, replace, or delete them. Historical failed recovery evidence remains preserved.
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 Changed · +1 lines · -16 tokens per session 7d40b5205259
- 1mo ago First seen · 61 lines · 935 tokens per session scan A 85de5e845878
agent-context-kit CLAUDE.md is an instructions file published in the GitHub repository Cynrath/agent-context-kit (14 stars, last pushed 12d ago), licensed MIT. It adds 919 tokens to every session, about $0.0037 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 2026-08-30.
Other instructions, from other repositories
agent-rulescope tests.instructions.md
Instructions for 13624725933/agent-rulescope, a project described as: See exactly which instructions your coding agent inherits. Scan AGENTS.md, CLAUDE.md, Cursor and Copilot rules.
agent-rulescope copilot-instructions.md
Copilot instructions for 13624725933/agent-rulescope, a project described as: See exactly which instructions your coding agent inherits. Scan AGENTS.md, CLAUDE.md, Cursor and Copilot rules.
vscode buildNext.instructions.md
Working notes and architecture documentation for the new esbuild-based build system in build/next. Use when making changes to the new build pipeline (transpile/bundle commands, NLS plugin, source-map handling, resource copying, or self-hosting watch tasks).
next.js AGENTS.md
AGENTS.md instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.
vscode oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, cache eligibility and rollout and applying the notice (cutover).
langchain AGENTS.md
AGENTS.md instructions for langchain-ai/langchain, covering global development guidelines for the langchain monorepo, corridor security analysis, project architecture and context, monorepo structure and development tools & commands.