reqforge-core

Shared development rules for writing code with test-driven development, or TDD: write a failing test, make it pass, then improve the code. They also set standards for TypeScript, React, file size, structure, and verification.

In plain words
What is it for?
Use them for all code changes to guide test-first implementation, code organization, naming, React and TypeScript choices, and final verification.
Why use it?
They prevent untested changes, overly large or unclear files, inconsistent code, and completion claims without evidence from a verification command.

Cursor rule for Cursor

Install

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.

agentmods
npx agentmods add rules/zxpmail/reqforge/reqforge-core
Clone the repo
git clone --depth 1 https://github.com/zxpmail/ReqForge

Made for: Cursor.

Per session 714 This file is loaded in full into every session.
When invoked 714 The same file — it is already loaded in full.
Security scan A 0 findings. Scan, not verified.
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 $0.00714 $0.00714
Opus 5 $0.00357 $0.00357
Sonnet 5 $0.00143 $0.00143
Haiku 4.5 $0.00071 $0.00071

Measured 2d ago against content hash 66a932072fee, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

reqforge-core 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 2d 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.

adapters/cursor/.cursor/rules/reqforge-core.mdc · 62 lines

How it starts

The opening of the file, as written. The whole thing — 62 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Forge Core Development Rules

TDD First (RED-GREEN-REFACTOR)

Tests must be written before functional code. No code without tests is allowed to be committed.

  • RED: First write a test that will fail
  • GREEN: Write minimal code to make the test pass
  • REFACTOR: Refactor while keeping the test green

Code Standards

  • Single file does not exceed 300 lines — split by responsibility
  • TypeScript strict mode, no any (use unknown + type guards)
  • Naming: Components PascalCase, functions/variables camelCase, files kebab-case, constants UPPER_SNAKE_CASE
  • Each file has a single responsibility with a clear external interface
  • React prefers function components + Hooks, no class components
  • Styles prefer Tailwind, don't write custom CSS unless necessary
  • No unrelated refactoring — only touch what needs changing
  • YAGNI: don't write code for hypothetical future requirements
  • Follow the existing codebase style — don't force your own preferences

Verification Is Evidence (Hard Gate)

Every completion declaration must include the verification command and its output executed in the same message. "It's done" with no verification command is an invalid declaration. No on-the-spot verification, no completion.

Four-Step Phase Verification

After all Tasks in a Phase are complete:

  1. Code Review — cross-reference delivery checklist item by item
  2. Test Completeness — all features implemented, no omissions
  3. Compile Checktsc --noEmit zero errors
  4. Functional Test — start dev server, verify no errors, test both new and existing features

If any step fails → fix → restart from Step 1. One pass is rarely enough.

Memory System

  • memory/project-memory.md — Architecture facts, constraints (permanent)
  • memory/decisions-log.md — ADR-format decision records (permanent)
  • memory/task-history.md — Recent task summaries, max 30 entries (rolling)

After every completed Task: append to task-history.md. If a technical decision was made, append to decisions-log.md. If architecture facts changed, update project-memory.md.

Read the full file on GitHub · 62 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. 2d ago First seen · 62 lines · 714 tokens per session scan A 66a932072fee

Subscribe to this mod's changes

reqforge-core is a cursor rule published in the GitHub repository zxpmail/ReqForge (18 stars, last pushed 11d ago), licensed MIT. It adds 714 tokens to every session, about $0.0036 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.

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