Borrowing it
Nothing to install: this file belongs to mryll/codexbar. 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/mryll/codexbar/master/CLAUDE.mdgit clone --depth 1 https://github.com/mryll/codexbarWrote 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/mryll/codexbar/claude-md)<a href="https://agentmods.dev/instructions/mryll/codexbar/claude-md"><img src="https://agentmods.dev/badge/instructions/mryll/codexbar/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/mryll/codexbar/claude-md"><img src="https://agentmods.dev/badge/instructions/mryll/codexbar/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 | $0.00857 | $0.00857 |
| Opus 5.5 | $0.00343 | $0.00343 |
| Sonnet 5.5 | $0.00171 | $0.00171 |
| Haiku 4.5 | $0.00086 | $0.00086 |
Grade A, and why
codexbar 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 1mo 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 — 27 lines — stays where its author put it; the contents beside it link to each section on GitHub.
CLAUDE.md
Tooling
- Single bash script (
codexbar) — no build step, no dependencies to install - Install:
make install PREFIX=~/.local
Non-Obvious Rules
-
The CLI always runs through
/bin/sh -c 'exec "$0" "$@"', never direct. Handing Quickshell 0.3.1 a nonexistent binary can ABORT the whole shell inside the failed start (claudebar#6) — before any QML signal fires, so no handler can catch it. sh always starts; a failed exec is sh exiting 127 (not found) or 126 (not executable). The failed-start discriminator is therefore!sawExit || exitCode === 126 || exitCode === 127on empty output:!sawExitstays as the belt for a Quickshell that emits neitherstartednorexited, and 126/127 is a deliberate approximation — a foreign brokencodexbarexiting 126/127 empty lands there too, and the bundled fallback is the right move for it as well (the script itself always exits 0). Anexitedrun with empty output and any other code is an operational failure, never "not installed". -
The bundled-script fallback fires ONLY on a failed start. The plugin clone carries the script, so the panel switches
resolvedBinto the clone's copy when PATH cannot start it. PATH first, always: the AUR release wins when it exists. Never fall back on operational errors. A lateryay -Sapplies on the next shell restart. -
URL→path decodes each segment (mirror of
Util.fileUrl). The naive scheme strip is banned;test_bundled_fallback.shpins it. A bad%degrades to PATH-only. -
schema_versionis pinned to 2 on both sides. A schema bump must change script, panel and tests in one commit. -
installCmdis the one constant — the message shows it and the button copies it (Util.execArgv(["wl-copy", ...]), no shell line, no trailing newline). The button gates onnotInstalled, never on error text. -
A tooltip meter is PARKED, not rendered in place. The bar has to reach the tooltip's right edge, and that edge is the widest TEXT line — which does not exist yet while the lines are being collected. So a meter pushes
METER:<i>intolinesplus one entry in the parallelmeter_*arrays, and the width pass resolves it. The width pass MUST skipMETER:lines, or the measurement is circular. Every meter in one tooltip gets the SAME bar length: they stack, so a reader compares them against each other.
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.
- 1mo ago Changed · -6 lines · +8 tokens per session 83d4b3ee3457
- 2mo ago First seen · 33 lines · 849 tokens per session scan A b5e25a8600f9
codexbar CLAUDE.md is an instructions file published in the GitHub repository mryll/codexbar (18 stars, last pushed 14d ago), licensed MIT. It adds 857 tokens to every session, about $0.0034 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 2026-08-30.
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).
deno copilot-instructions.md
Copilot instructions for denoland/deno, covering deno development guide for github copilot, network access, high level overview, key directories and key files to understand first.