agentsh: Instructions file for Claude Code

CLAUDE.md

agentsh CLAUDE.md is an instructions file for Claude Code from canyonroad/agentsh. It costs 163 tokens per session, scanned A, original, Apache-2.0.

A set of instructions for coding agents working on a Go command-line project with separate code for macOS, Windows, and Linux.

In plain words
What is it for?
Use it when changing this project, especially to run Go builds and tests, check Windows cross-compilation, and review paths or platform assumptions.
Why use it?
It gives agents the project layout and checks needed to build, test, and avoid operating-system-specific mistakes before a change is committed.

Instructions file for Claude Code

Written for Claude Code: the file is CLAUDE.md. Also seen: mentions Claude Code; mentions AGENTS.md.

This is canyonroad/agentsh's own configuration. It tells Claude Code how to work on agentsh itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything agentsh configures →

Reuse

Borrowing it

Nothing to install: this file belongs to canyonroad/agentsh. 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/canyonroad/agentsh/main/CLAUDE.md
Clone the repo
git clone --depth 1 https://github.com/canyonroad/agentsh

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.

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README.md
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Per session 163 This file is loaded in full into every session.
When invoked 163 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 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 5.1 $0.00163 $0.00163
Opus 5.5 $0.00065 $0.00065
Sonnet 5.5 $0.00033 $0.00033
Haiku 4.5 $0.00016 $0.00016

Measured 1mo ago against content hash a321ea58c8b7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

agentsh 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.

CLAUDE.md · 25 lines

What it actually says

Claude Code Guidelines

Read and follow AGENTS.md for cross-platform development rules.

Project Structure

  • cmd/ - CLI entry points
  • internal/ - Private packages
  • pkg/ - Public packages
  • internal/platform/ - OS-specific implementations (darwin, windows, linux)

Build & Test

go build ./...                    # Build all
go test ./...                     # Test all
GOOS=windows go build ./...       # Verify Windows cross-compile

Before Committing

  1. Verify cross-compilation: GOOS=windows go build ./...
  2. Run tests: go test ./...
  3. Check for hardcoded paths or OS-specific assumptions
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. 1mo ago First seen · 25 lines · 163 tokens per session scan A a321ea58c8b7

Subscribe to this mod's changes

agentsh CLAUDE.md is an instructions file published in the GitHub repository canyonroad/agentsh (404 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 163 tokens to every session, about $0.0007 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.

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