headless-pm: Instructions file for Codex

AGENTS.md

headless-pm AGENTS.md is an instructions file for Codex, OpenCode from madviking/headless-pm. It costs 3,108 tokens per session, scanned A, original, MIT.

A setup and development guide for a Python application with platform-specific virtual environments, dependencies, environment variables, and a database. A virtual environment keeps this project's Python packages separate from other projects.

In plain words
What is it for?
Use it to create the correct environment, install dependencies, configure API keys and database settings, initialize the database, and start the application.
Why use it?
It provides the commands and package versions needed to prepare the application on different computer architectures and avoids missing configuration or database setup.

Instructions file for CodexOpenCode

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

This is madviking/headless-pm's own configuration. It tells Codex and OpenCode how to work on headless-pm 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 headless-pm configures →

Reuse

Borrowing it

Nothing to install: this file belongs to madviking/headless-pm. 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/madviking/headless-pm/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/madviking/headless-pm

Made for: Codex, OpenCode.

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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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.

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Your own site · 80×15
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Per session 3,108 This file is loaded in full into every session.
When invoked 3,108 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 $0.03108 $0.03108
Opus 5.5 $0.01243 $0.01243
Sonnet 5.5 $0.00622 $0.00622
Haiku 4.5 $0.00311 $0.00311

Measured 2mo ago against content hash 7b7f5279d00c, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

headless-pm 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 2mo 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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

AGENTS.md · 325 lines

How it starts

The opening of the file, as written. The whole thing — 325 lines — stays where its author put it; the contents beside it link to each section on GitHub.

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Environment Setup

Automated Setup (Recommended)

# Run universal setup script - handles platform-specific requirements
./setup/universal_setup.sh

# This will:
# - Detect your architecture (ARM64 for native Mac, x86_64 for Claude Code)
# - Create the appropriate virtual environment (venv or claude_venv)
# - Install correct package versions for your platform
# - Create .env from env-example if needed

Manual Setup (if needed)

# For LLM agents (x86_64), use claude_venv:
python -m venv claude_venv
source claude_venv/bin/activate
pip install pydantic==2.11.7 pydantic-core==2.33.2
pip install -r setup/requirements.txt

# For native Mac (ARM64), use standard venv:
python -m venv venv
source venv/bin/activate
pip install -r setup/requirements.txt

# Configure environment
cp env-example .env
# Edit .env with API keys and database configuration

# Initialize database
python -m src.cli.main init
python -m src.cli.main seed  # Optional: add sample data

Running the Application

Quick Start (Recommended)
# Activate your virtual environment first
source venv/bin/activate  # or source claude_venv/bin/activate

# Use the automated start script (checks environment, DB, starts server)
./start.sh
Manual Start
# Run API server
bash start.sh

The start.sh script automatically:

  • ✅ Validates Python 3.11+ requirement
  • ✅ Checks required packages are installed
  • ✅ Creates .env from env-example if needed
  • ✅ Tests database connection
  • ✅ Initializes database if needed
  • ✅ Checks port availability
  • ✅ Starts server with proper configuration
  • ✅ Starts only services with defined ports in .env

Service Port Configuration:

  • Services are only started if their port is defined in .env
  • To skip a service, remove or comment out its port variable:
    • SERVICE_PORT - API server (default: 6969)
    • MCP_PORT - MCP server (default: 6968)
    • DASHBOARD_PORT - Web dashboard (default: 3001)

Read the full file on GitHub · 325 lines

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. 2mo ago First seen · 325 lines · 3,108 tokens per session scan A 7b7f5279d00c

Subscribe to this mod's changes

headless-pm AGENTS.md is an instructions file published in the GitHub repository madviking/headless-pm (348 stars, last pushed 9mo ago), licensed MIT. It adds 3,108 tokens to every session, about $0.0124 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.

Related

headless-pm AGENTS.md compared with instructions from other repositories

headless-pm AGENTS.md next to 6 instructions from other repositories
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headless-pm AGENTS.mdmadviking/headless-pmInstructions file3489mo agoMITA3,108Codex, OpenCode
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next.js AGENTS.mdvercel/next.jsInstructions file143ktodayMITA7,461Codex, OpenCode
langchain AGENTS.mdlangchain-ai/langchainInstructions file149kyesterdayMITA4,680Codex, OpenCode
vscode oss-third-party-notices.instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA5,516GitHub Copilot
vscode copilot-instructions.mdmicrosoft/vscodeInstructions file195kyesterdayMITA3,093GitHub Copilot
deepseek-harness AGENTS.mddeepseek-ai/deepseek-harnessInstructions file274k2d agoMITA4,313Codex, OpenCode