What is siffran CLAUDE.md?

Project-specific instructions for Claude Code, covering the Makefile, repository structure, conventions, and versioning.

Driving the project through its Makefile, following repository conventions, and managing version changes.

They explain how the siffran project is organized and how its commands and releases are expected to work.

How obzenner/siffran configures Claude Code

Reuse

Borrowing it

Nothing to install: this file belongs to obzenner/siffran. 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/obzenner/siffran/main/CLAUDE.md

Clone the repo

git clone --depth 1 https://github.com/obzenner/siffran

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.

README.md

[![agentmods](https://agentmods.dev/badge/instructions/obzenner/siffran/claude-md/github.svg)](https://agentmods.dev/instructions/obzenner/siffran/claude-md)

Your own site

<a href="https://agentmods.dev/instructions/obzenner/siffran/claude-md"><img src="https://agentmods.dev/badge/instructions/obzenner/siffran/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.

Your own site · 80×15

<a href="https://agentmods.dev/instructions/obzenner/siffran/claude-md"><img src="https://agentmods.dev/badge/instructions/obzenner/siffran/claude-md.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 2,472 This file is loaded in full into every session.

When invoked 2,472 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 unknown 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.

Model	Per session	Once invoked
Fable 5.1	$0.02472	$0.02472
Opus 5.5	$0.00989	$0.00989
Sonnet 5.5	$0.00494	$0.00494
Haiku 4.5	$0.00247	$0.00247

Measured 2d ago against content hash 7e8c88d3eadc, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

siffran 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 2d 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 · 120 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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.

2d ago Changed 7e8c88d3eadc
5d ago Changed ff1bb2b24003
9d ago Changed · +20 tokens per session d141dd9734de
23d ago Changed · +12 lines · +579 tokens per session 6c0102d9d339
1mo ago Changed f5590b1a0c08
1mo ago Changed · +9 tokens per session 176fa4545369
1mo ago Changed fa8fb3fe6a7a
1mo ago Changed e1b4142e1d69
1mo ago Changed cd1eacbc389d
1mo ago First seen · 108 lines · 1,864 tokens per session scan A c37382860053

Subscribe to this mod's changes

siffran CLAUDE.md is an instructions file published in the GitHub repository obzenner/siffran (7 stars, last pushed 3d ago), with no licence file. It adds 2,472 tokens to every session, about $0.0099 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.

siffran CLAUDE.md next to 6 instructions from other repositories
Mod	Type	Stars	Last push	Licence	Scan	Tokens	Works with
siffran CLAUDE.mdobzenner/siffran	Instructions file	7	3d ago	none	A	2,472	Claude Code
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vscode model-prompts.instructions.mdmicrosoft/vscode	Instructions file	195k	today	MIT	A	2,022	GitHub Copilot

siffran: Instructions file for Claude Code