cursor-handbook: Instructions file for Codex

AGENTS.md

cursor-handbook AGENTS.md is an instructions file for Codex, OpenCode from girijashankarj/cursor-handbook. It costs 446 tokens per session, scanned A, original, MIT.

Repository instructions for AI agents covering project conventions, security, database rules, logging, and efficient validation.

In plain words
What is it for?
Use them to guide implementation, type checking, API handlers, database queries, logging, imports, and shared types.
Why use it?
They help coding agents make changes that match the repository and avoid unsafe practices such as exposing secrets or deleting records.

Instructions file for CodexOpenCode

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

This is girijashankarj/cursor-handbook's own configuration. It tells Codex and OpenCode how to work on cursor-handbook 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 cursor-handbook configures →

Reuse

Borrowing it

Nothing to install: this file belongs to girijashankarj/cursor-handbook. 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/girijashankarj/cursor-handbook/main/AGENTS.md
Clone the repo
git clone --depth 1 https://github.com/girijashankarj/cursor-handbook

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.

agentmods badge for cursor-handbook AGENTS.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/girijashankarj/cursor-handbook/agents-md.svg)](https://agentmods.dev/instructions/girijashankarj/cursor-handbook/agents-md)
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<a href="https://agentmods.dev/instructions/girijashankarj/cursor-handbook/agents-md"><img src="https://agentmods.dev/badge/instructions/girijashankarj/cursor-handbook/agents-md.svg" alt="Measured on agentmods" height="20"></a>
Per session 446 This file is loaded in full into every session.
When invoked 446 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 $0.00446 $0.00446
Opus 5 $0.00223 $0.00223
Sonnet 5 $0.00089 $0.00089
Haiku 4.5 $0.00045 $0.00045

Measured 4d ago against content hash 69a5704936d7, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-08, from the pricing page.

Security

Grade A, and why

cursor-handbook 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 4d 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.

AGENTS.md · 59 lines

What it actually says

AGENTS.md — Instructions for AI Agents

This file provides instructions to AI agents working in this repository.

Project Overview

This is cursor-handbook, a Cursor IDE configuration boilerplate providing rules, agents, skills, commands, and hooks for software development.

Key Principles

1. Token Efficiency

  • NEVER auto-run full test suites (100K+ tokens)
  • NEVER auto-run full lint (50K+ tokens)
  • Use read_lints tool instead of lint commands
  • Run type-check (~10K tokens) as the default validation
  • Require explicit user confirmation for 50K+ token operations

2. Security

  • NEVER hardcode secrets, API keys, passwords
  • NEVER log PII (names, emails, SSN, credit cards)
  • Use environment variables for all secrets
  • Use generic placeholders for infrastructure: [ACCOUNT_ID], [RESOURCE_NAME]

3. Code Conventions

  • Follow the handler pattern for API endpoints
  • Soft delete only — never use DELETE SQL statements
  • Structured JSON logging with correlationId
  • All shared types in common/ directories
  • Import order: external → internal → relative

4. Database

  • All tables require: id, created_at, updated_at, active_indicator
  • Parameterized queries only — never concatenate SQL
  • Cursor-based pagination preferred
  • Schema changes only via migrations

5. Testing

  • Minimum 90% code coverage
  • Mock all external dependencies
  • Follow AAA pattern (Arrange-Act-Assert)
  • No real API/database calls in unit tests

Configuration

Project settings are in .cursor/config/project.json. Components reference settings via {{CONFIG.section.key}} placeholders.

Component Map

  • Rules: .cursor/rules/*.mdc — Always-applied standards
  • Agents: .cursor/agents/*.md — Specialized AI assistants
  • Skills: .cursor/skills/*/SKILL.md — Step-by-step workflows
  • Commands: .cursor/commands/*.md — Quick actions
  • Hooks: .cursor/hooks/*.sh — Automation scripts
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. 4d ago First seen · 59 lines · 446 tokens per session scan A 69a5704936d7

Subscribe to this mod's changes

cursor-handbook AGENTS.md is an instructions file published in the GitHub repository girijashankarj/cursor-handbook (30 stars, last pushed 8d ago), licensed MIT. It adds 446 tokens to every session, about $0.0022 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 2026-09-03.

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