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/codebar/planner/agents-mdgit clone --depth 1 https://github.com/codebar/plannerWhat 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 | $0.02868 | $0.02868 |
| Opus 5 | $0.01434 | $0.01434 |
| Sonnet 5 | $0.00574 | $0.00574 |
| Haiku 4.5 | $0.00287 | $0.00287 |
Grade A, and why
planner AGENTS.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 yesterday.
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 — 326 lines — stays where its author put it; the contents beside it link to each section on GitHub.
AGENTS.md
This file provides guidance to AI agents when working with code in this repository.
Project Overview
codebar planner is a Rails 8.1 application for managing codebar.io members and events. It handles workshop/event scheduling, member registration, invitations, RSVPs, and feedback collection for coding workshops organized by codebar chapters.
Development Workflow
CRITICAL: Never work directly on the master branch. All changes must be made via pull requests from feature branches.
Branching Strategy
- Create a feature branch from
master:git checkout -b feature/descriptive-name - Make your changes and commit them to the feature branch
- Push the branch to the remote repository
- Create a pull request for review
- Wait for approval before merging to
master
Never:
- Commit directly to
master - Push directly to
master - Merge without review
Development Setup
IMPORTANT: Always use native installation with bundle exec commands. Never use Docker or bin/d* commands.
Prerequisites
- mise — install via
brew install mise, then enablemise activatein your shell profile (see mise docs). Alternatively, usemise execto run commands with project env vars without shell activation. - PostgreSQL running locally (default port 5432, or configure via
DB_PORT)
Native Installation
cp mise.local.toml.example mise.local.toml
# Edit mise.local.toml with your GitHub OAuth credentials
# Optionally delete .env if it exists from a prior setup:
rm .env
bundle && rake db:create db:prepare db:seed
- Server:
bundle exec rails server - Tests:
make testorbundle exec parallel_rspec spec/ -n 3- runs RSpec tests in parallel (3 processes is optimal) - Single test:
bundle exec rspec spec/path/to/file_spec.rb:42 - Rails console:
bundle exec rails console - Run rake tasks:
bundle exec rake [task] - Linting:
bundle exec rubocop
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.
- yesterday First seen · 326 lines · 2,868 tokens per session scan A ea31007841c9
planner AGENTS.md is an instructions file published in the GitHub repository codebar/planner (104 stars, last pushed yesterday), licensed MIT. It adds 2,868 tokens to every session, about $0.0143 per session on Opus 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
rails_api_base CLAUDE.md
Instructions for rootstrap/rails_api_base, covering claude.md, what this repo is, common commands, testing notes and architecture.
proscenium CLAUDE.md
Claude Code instructions for joelmoss/proscenium, covering claude.md, project overview, prerequisites, architecture and key components.
ruby_llm AGENTS.md
Instructions for crmne/ruby_llm, covering agents.md, what this is, ground rules, setup and commands.
frankfurter AGENTS.md
Instructions for lineofflight/frankfurter, covering frankfurter, before you write code, architecture, project structure and key components.
dotfiles CLAUDE.md
Instructions for joshukraine/dotfiles, covering claude.md, about this repository, repository structure, common commands and setup and installation.
ruby2d AGENTS.md
Instructions for ruby2d/ruby2d, covering ruby 2d guide for ai coding agents, testing, architecture, multi-ruby support and documentation.