Borrowing it
Nothing to install: this file belongs to thorstenfoltz/octa. 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/thorstenfoltz/octa/master/CLAUDE.mdgit clone --depth 1 https://github.com/thorstenfoltz/octaWrote 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/thorstenfoltz/octa/claude-md)<a href="https://agentmods.dev/instructions/thorstenfoltz/octa/claude-md"><img src="https://agentmods.dev/badge/instructions/thorstenfoltz/octa/claude-md.svg" alt="Measured on agentmods" 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 | $0.02751 | $0.02751 |
| Opus 5 | $0.01375 | $0.01375 |
| Sonnet 5 | $0.00550 | $0.00550 |
| Haiku 4.5 | $0.00275 | $0.00275 |
Grade B, and why
octa CLAUDE.md scanned grade B with 1 finding 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.
Asks for rootmediumPrivilege escalation
A mod that escalates privileges can change anything on the machine, not only the project.
`sudo ./install.sh` for system-wide on Linux, `./install.sh ~/.local` for user-local. On Windows: `install.bat` (system-wide, admin; bundled in the release zip) or `install.ps1` (per-user, no admin; run standalone from t How it starts
The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Guidance for Claude Code when working in this repository.
Commands
cargo build # debug build
cargo build --release # release build
cargo run -- file.parquet
cargo test
cargo test <test_name>
cargo clippy
cargo fmt
Installation
sudo ./install.sh for system-wide on Linux, ./install.sh ~/.local for user-local. On Windows: install.bat (system-wide, admin; bundled in the release zip) or install.ps1 (per-user, no admin; run standalone from the repo root, NOT shipped in the zip since it downloads the zip itself) — the PowerShell script downloads the latest release, verifies the SHA256 against SHA256SUMS, installs into %LOCALAPPDATA%\Programs\Octa, and Unblock-Files the binary to dodge SmartScreen. Linux build needs libgtk-3-dev libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libxkbcommon-dev libssl-dev libfontconfig1-dev libfreetype6-dev.
Architecture
Native desktop GUI for tabular data, eframe/egui (immediate-mode), Rust edition 2024. Needs a C compiler (duckdb, rusqlite). The crate is both a library (src/lib.rs re-exports data, formats, ui) and a binary (src/main.rs); tests use octa::data::*.
Renderer: glow (OpenGL), deliberately not eframe's default. eframe's default feature selects wgpu, which links naga (a shader compiler), wgpu-core/-hal/-types, ash (Vulkan bindings), spirv and gpu-allocator: 23 crates and ~3.5 MB for a program that draws 2D tables and writes no shaders. eframe is therefore declared default-features = false with an explicit ["accesskit", "default_fonts", "glow", "wayland", "x11"]. Do NOT "fix" it back to default. glutin covers every target: GLX+EGL on X11, EGL on Wayland, WGL on Windows, CGL on macOS (Apple's deprecated-but-present OpenGL; the fallback if that ever breaks is a per-target [target.'cfg(target_os = "macos")'] block selecting wgpu there only).
winit is a direct dependency on purpose. eframe pins winit with default-features = false, and the only thing that re-enables winit/default is eframe's own default feature, which we turn off. Dropping it would silently lose wayland-dlopen (the binary would hard-link libwayland-client.so and refuse to start on X11-only machines) and wayland-csd-adwaita (Wayland window decorations, needed whenever use_custom_title_bar is off). winit is already in the tree, so the direct dep adds no crates.
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 · +3 lines · +58 tokens per session 820a98fde70e
- 8d ago First seen · 91 lines · 2,693 tokens per session scan B 572f4414ddaf
octa CLAUDE.md is an instructions file published in the GitHub repository thorstenfoltz/octa (28 stars, last pushed yesterday), licensed MIT. It adds 2,751 tokens to every session, about $0.0138 per session on Opus 5. A static security scan graded it B with 1 finding (asks for root). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.
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