cmd-build

cmd-build is a cursor rule for Cursor from nota-america/forgecat-agent-profiles. It costs 166 tokens per session, scanned A, original, Apache-2.0.

A rule for completing software tasks in small steps: choose the next task, write a failing test, implement the smallest fix, test, build, and commit. TDD means writing the test for expected behavior before the implementation.

In plain words
What is it for?
Use it when working through a development plan one task at a time. It helps with acceptance criteria, test-first implementation, full test runs, builds, commits, and recovery when a step fails.
Why use it?
It provides a fixed order of work so changes are checked as they are made. This helps detect regressions and keeps each commit tied to a completed task.

Cursor rule for Cursor

Written for Cursor: installed under .cursor/.

Good fit Use it when working through a development plan one task at a time. It helps with acceptance criteria, test-first implementation, full test runs, builds, commits, and recovery when a step fails.

Compare 6 cursor rules from other repositories ↓
Install with agentmods
npx agentmods add rules/nota-america/forgecat-agent-profiles/cmd-build
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.

Clone the repo
git clone --depth 1 https://github.com/nota-america/forgecat-agent-profiles

Made for: Cursor.

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 cmd-build

README.md
[![agentmods](https://agentmods.dev/badge/rules/nota-america/forgecat-agent-profiles/cmd-build/github.svg)](https://agentmods.dev/rules/nota-america/forgecat-agent-profiles/cmd-build)
Your own site
<a href="https://agentmods.dev/rules/nota-america/forgecat-agent-profiles/cmd-build"><img src="https://agentmods.dev/badge/rules/nota-america/forgecat-agent-profiles/cmd-build/github.svg" alt="Measured on agentmods" height="20"></a>

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.

agentmods 80×15 button for cmd-build

Your own site · 80×15
<a href="https://agentmods.dev/rules/nota-america/forgecat-agent-profiles/cmd-build"><img src="https://agentmods.dev/badge/rules/nota-america/forgecat-agent-profiles/cmd-build.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 166 This file is loaded in full into every session.
When invoked 166 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 $0.00166 $0.00166
Opus 5.5 $0.00066 $0.00066
Sonnet 5.5 $0.00033 $0.00033
Haiku 4.5 $0.00017 $0.00017

Measured 1mo ago against content hash 9389dd436a45, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

cmd-build 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 1mo 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.

profiles/addyosmani/agent-skills/for-cursor/.cursor/rules/cmd-build.mdc · 20 lines

What it actually says

Invoke the agent-skills:incremental-implementation skill alongside agent-skills:test-driven-development.

Pick the next pending task from the plan. For each task:

  1. Read the task's acceptance criteria
  2. Load relevant context (existing code, patterns, types)
  3. Write a failing test for the expected behavior (RED)
  4. Implement the minimum code to pass the test (GREEN)
  5. Run the full test suite to check for regressions
  6. Run the build to verify compilation
  7. Commit with a descriptive message
  8. Mark the task complete and move to the next one

If any step fails, follow the agent-skills:debugging-and-error-recovery skill.

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. 1mo ago First seen · 20 lines · 166 tokens per session scan A 9389dd436a45

Subscribe to this mod's changes

cmd-build is a cursor rule published in the GitHub repository nota-america/forgecat-agent-profiles (93 stars, last pushed 1mo ago), licensed Apache-2.0. It adds 166 tokens to every session, about $0.0007 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.