sema CLAUDE.md

sema CLAUDE.md is an instructions file for coding agents from sema-lisp/sema. It costs 205 tokens per session, scanned A, original, MIT.

Project instructions for sema-lisp/sema, a Rust project that implements a Lisp language with built-in ways to use large language models.

In plain words
What is it for?
Use them when changing sema-lisp/sema, especially before creating worktrees or running large builds.
Why use it?
They give coding agents the repository rules for worktrees, Rust builds, and disk cleanup so changes follow the project's setup.

Instructions file

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add instructions/sema-lisp/sema/claude-md
Clone the repo
git clone --depth 1 https://github.com/sema-lisp/sema

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 sema CLAUDE.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/sema-lisp/sema/claude-md.svg)](https://agentmods.dev/instructions/sema-lisp/sema/claude-md)
Your own site
<a href="https://agentmods.dev/instructions/sema-lisp/sema/claude-md"><img src="https://agentmods.dev/badge/instructions/sema-lisp/sema/claude-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 205 This file is loaded in full into every session.
When invoked 205 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00205 $0.00205
Opus 5 $0.00102 $0.00102
Sonnet 5 $0.00041 $0.00041
Haiku 4.5 $0.00020 $0.00020

Measured 5d ago against content hash 3b918857f8c0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sema 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 5d 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 · 17 lines

What it actually says

@AGENTS.md

Sema workspace (if present)

If a ../CLAUDE.md and ../repos.tsv exist beside this repo, you are inside the sema-lisp workspace meta-repo, and its ../CLAUDE.md is MANDATORY here:

  • Create/remove git worktrees ONLY via jake wt-new / jake wt-rm run from the workspace root — never git worktree add by hand, and never outside ../.worktrees/.
  • Rust builds run with incremental compilation on and NO rustc wrapper (../.cargo/config.toml; policy rationale in docs/build-time-report.md). Don't re-add an sccache wrapper — it hard-fails incremental builds. Reclaim disk with jake sweep (worktree hygiene matters more with incremental on).

Read ../CLAUDE.md before creating worktrees or running large builds.

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. 5d ago First seen · 17 lines · 205 tokens per session scan A 3b918857f8c0

Subscribe to this mod's changes

sema CLAUDE.md is an instructions file published in the GitHub repository sema-lisp/sema (41 stars, last pushed yesterday), licensed MIT. It adds 205 tokens to every session, about $0.0010 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 2026-08-30.