Borrowing it
Nothing to install: this file belongs to SebastianElvis/reaper. 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/SebastianElvis/reaper/main/CLAUDE.mdgit clone --depth 1 https://github.com/SebastianElvis/reaperWrote 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/sebastianelvis/reaper/claude-md)<a href="https://agentmods.dev/instructions/sebastianelvis/reaper/claude-md"><img src="https://agentmods.dev/badge/instructions/sebastianelvis/reaper/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/sebastianelvis/reaper/claude-md"><img src="https://agentmods.dev/badge/instructions/sebastianelvis/reaper/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 | $0.01877 | $0.01877 |
| Opus 5 | $0.00938 | $0.00938 |
| Sonnet 5 | $0.00375 | $0.00375 |
| Haiku 4.5 | $0.00188 | $0.00188 |
Grade A, and why
reaper 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 8d 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 — 63 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Reaper
AI-native scientific research pipeline distributed as a host-agnostic skills package. Each pipeline stage is a SKILL.md folder that runs on any AI coding agent supporting the skills convention — Cursor, OpenAI Codex CLI, Cline, Continue, Gemini CLI, Copilot, Windsurf, Claude Code, and 40+ others. Takes a research goal — optionally with a research paper — and autonomously runs a multi-step research loop. Ships with reference files for cryptography and distributed systems, but the skills themselves are domain-agnostic — swap the reference files to adapt to other research domains.
Project structure
skills/— 10 composable skills (each has aSKILL.mddefining its behavior; the/<skill>form is the canonical display convention used in all user-facing docs)/reaper— Main orchestrator that chains all other skills/clarify-goal— Interactive goal clarification (asks user targeted questions before pipeline runs)/analyze-paper,/review-literature,/formalize-problem,/brainstorm,/investigate,/critique,/synthesize— Pipeline stages/search-paper— Academic search + citation graph + venue resolution. Bundles five Python drivers (arxiv.py,iacr.py,semantic_scholar.py,dblp.py,openalex.py); theSKILL.mditself orchestrates the layered venue lookup.
tests/— Python tests for skill structure, search scripts, and L1 eval gradersevals/— Layered evaluation system. L1 code-based graders (graders/), L2 Claude-CLI LLM judges (judge/), per-skill rubrics (rubrics/), and fixtures with reference + planted-negative variants. Orchestrator:python3 -m evals.run_evals. Seeevals/README.md.dev/— Development docs includingROADMAP.md(full methodology and design).claude-plugin/— Claude-Code-specific plugin manifest (plugin.json,marketplace.json); other hosts ignore this directory.github/workflows/— CI (pytest + strictnpx skillsdiscovery check that asserts every expected skill, script, and reference file is present after installation)
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.
- 8d ago First seen · 63 lines · 1,877 tokens per session scan A f8fe9b368f1c
reaper CLAUDE.md is an instructions file published in the GitHub repository SebastianElvis/reaper (9 stars, last pushed 4mo ago), licensed Apache-2.0. It adds 1,877 tokens to every session, about $0.0094 per session on Opus 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.
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