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.
npx agentmods add instructions/wbern/agent-instructions/claude-mdgit clone --depth 1 https://github.com/wbern/agent-instructionsWhat 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 | $0.01813 | $0.01813 |
| Opus 5 | $0.00907 | $0.00907 |
| Sonnet 5 | $0.00363 | $0.00363 |
| Haiku 4.5 | $0.00181 | $0.00181 |
Grade B, and why
agent-instructions 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 3d 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.
Unrestricted tool accessmediumExcessive agency
A wildcard tool grant or "run any command" leaves no least-privilege boundary at all.
- **Never** use wildcard patterns like `Bash(git:*)` or `allowed-tools: *` How it starts
The opening of the file, as written. The whole thing — 202 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Claude Instructions Repository
Note: This file contains instructions for managing THIS repository. Users installing the commands should NOT copy this file - it's for maintainers only.
GitHub URL: https://github.com/wbern/agent-instructions (NOT KenDev-AB)
This repository contains a fragment-based system for generating slash commands for AI coding agents (Claude Code, OpenCode) with TDD focus.
Architecture
Fragment System
- Sources (
src/sources/*.md): Command templates with INCLUDE directives only - Fragments (
src/fragments/*.md): Reusable content blocks - Local commands (
.claude/commands/,.opencode/commands/): Generated commands for local development - Dynamic generation: CLI generates commands on-the-fly with optional feature flags (e.g.,
beads)
Key Principles
- Single source of truth: Content lives in fragments, not sources
- Clean sources: Source files contain only INCLUDE directives, never expanded content
- Track artifacts: Both sources and built commands are committed for easy distribution
- Feature flags: Use
featureFlag='beads'for conditional content
Contributor Commands
Source files prefixed with underscore (_*.md) are "contributor commands":
- Excluded from npm package distribution (consumers never see them)
- Included in this repo's local commands for maintainers
- Underscore prefix is stripped from output filename (
_foo.md→foo.md) - Not listed in README command list
- Use
--include-contrib-commandsinternal flag to include them
Development Workflow
Package Manager
- Use
pnpmfor all package operations
Common Commands
pnpm build # Build README.md and local commands
pnpm test # Run tests
pnpm vitest run -u # Update snapshots
Git Hooks (Husky)
Pre-commit hook automatically:
- Builds (includes markdownlint --fix)
- Runs tests
- Stages generated files (README.md, generated commands)
This ensures artifacts are always in sync with sources.
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.
- 3d ago First seen · 202 lines · 1,813 tokens per session scan B 9a9765e658f6
agent-instructions CLAUDE.md is an instructions file published in the GitHub repository wbern/agent-instructions (168 stars, last pushed 3mo ago), licensed MIT. It adds 1,813 tokens to every session, about $0.0091 per session on Opus 5. A static security scan graded it B with 1 finding (unrestricted tool access). 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).
spec-kit AGENTS.md
AGENTS.md instructions for github/spec-kit, covering agents.md, about spec kit and specify, quickstart — add a new integration in 5 steps, integration architecture and integrationmanifest — file tracking.
codex AGENTS.md
AGENTS.md instructions for openai/codex, covering rust/codex-rs, the codex-core crate, code review rules, crate api surface and model visible context.
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 oss-third-party-notices.instructions.md
Instructions for microsoft/vscode, covering vs code oss third-party-notices pipeline, architecture, pipeline flow in ci, applying the notice (cutover) and fallback chain (never fail the build).
next.js AGENTS.md
Instructions for vercel/next.js, covering next.js development guide, codebase structure, monorepo overview, core package: packages/next and other important packages.