Borrowing it
Nothing to install: this file belongs to simonives/rainkeeper. 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/simonives/rainkeeper/main/CLAUDE.mdgit clone --depth 1 https://github.com/simonives/rainkeeperWrote 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/simonives/rainkeeper/claude-md)<a href="https://agentmods.dev/instructions/simonives/rainkeeper/claude-md"><img src="https://agentmods.dev/badge/instructions/simonives/rainkeeper/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/simonives/rainkeeper/claude-md"><img src="https://agentmods.dev/badge/instructions/simonives/rainkeeper/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 | $0.00674 | $0.00674 |
| Opus 5.5 | $0.00270 | $0.00270 |
| Sonnet 5.5 | $0.00135 | $0.00135 |
| Haiku 4.5 | $0.00067 | $0.00067 |
Grade A, and why
rainkeeper CLAUDE.md scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 24d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
This is a copy
86% identical to rainkeeper AGENTS.md — 8 lines differ, which has more behind it and is treated as the original. This page carries a canonical link to it rather than competing with it.
How it starts
The opening of the file, as written. The whole thing — 35 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md — Rainkeeper
Rainkeeper is Simon's own open-source MCP server for Raindrop.io. It fixes two bugs in existing community alternatives: it works on free Raindrop accounts (the official MCP requires Pro), and collection moves actually work (correct {"collection": {"$id": n}} request body format). MIT licence.
Language: Python
Framework: FastMCP
Repo: ~/git/rainkeeper
Registered as: rainkeeper in Claude Desktop and CLI (mcp__rainkeeper__ tool prefix)
Scope
This repo's delta over generic Python/FastMCP competence: the Raindrop-specific API bug fixes, and the mandatory Superpowers development methodology for this project. Generic Python/FastMCP/MCP-server knowledge is assumed, not repeated.
Precedence
This file is authoritative for all rainkeeper work — no parent CLAUDE.md exists inside this repo. Global ~/.claude/CLAUDE.md DOCTRINE and preferences apply where not overridden here; this file overrides the global defaults on rainkeeper-specific technical and process matters (e.g. mandatory TDD) regardless of recency.
Instructions
Commands:
- Branch naming:
feat/,fix/,docs/,chore/. All work on a feature branch, PR intomain— never commit directly tomain. - Mandatory workflow for any new feature or significant change:
/brainstorming(before any implementation, no exceptions for perceived simplicity) →/writing-plans(plan written todocs/superpowers/specs/and committed before coding) →/test-driven-development(no production code without a failing test first) →/verification-before-completion(before marking any task done) →/finishing-a-development-branch(before raising a PR). - For bug fixes: write the failing test that reproduces the bug first, then fix. No exception.
Conventions:
- Always call
list_collectionsfirst in any Raindrop session — all move/file operations require numeric collection IDs, not names. - The Superpowers plugin (
superpowers@claude-plugins-official) methodology is mandatory for all work on this project.
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.
- 24d ago First seen · 35 lines · 674 tokens per session scan A 4bf57f2d4c45
rainkeeper CLAUDE.md is an instructions file published in the GitHub repository simonives/rainkeeper (1 stars, last pushed 25d ago), licensed MIT. It adds 674 tokens to every session, about $0.0027 per session on Opus 5.5. A static security scan graded it A with 0 findings. It is 86% identical to rainkeeper AGENTS.md, differing in 8 lines, and is treated as a copy.
Other instructions, from other repositories
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.
vscode copilot-instructions.md
Copilot instructions for microsoft/vscode, covering vs code copilot instructions, project overview, root folders, core architecture (src/ folder) and built-in extensions (extensions/ folder).
deepseek-harness AGENTS.md
AGENTS.md instructions for deepseek-ai/deepseek-harness, covering agents.md, pre-stable apis and released session data, repository layout, commands and host sandbox failures.