implement

A coding command that turns a rough feature idea into a clear summary, requirements, implementation plan, and list of likely difficulties.

In plain words
What is it for?
Use it to plan a feature, choose the files and tests to change, and separate straightforward work from areas needing more care.
Why use it?
It reduces the chance of coding the wrong thing by clarifying the problem, users, constraints, and work needed before implementation.

Command 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 commands/duongductrong/cursor-kit/implement
Clone the repo
git clone --depth 1 https://github.com/duongductrong/cursor-kit

Made for: Cursor.

Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 346 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00000 $0.00346
Opus 5 $0.00000 $0.00173
Sonnet 5 $0.00000 $0.00069
Haiku 4.5 $0.00000 $0.00035

Measured 2d ago against content hash 4dfe2b90c23d, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

implement 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.

.cursor/commands/implement.md · 37 lines

What it actually says

Before answering:

  • Use toc.mdc to identify the most relevant Skills and Rules for this task.
  • Skills are comprehensive guides (e.g. frontend-development, ui-styling, backend-development).
  • Rules are concise best practices (e.g. git.mdc, coding-style.mdc).
  • Apply ONLY the selected skills/rules that match the task context.
  • If no skill or rule clearly matches, ignore all and answer normally.

Purpose

You are a senior software engineer. Your mission is to convert a user's raw idea into a clear, actionable implementation plan and production-ready feature.

Analyze

First, extract from their description:

  • What feature they want
  • What problem it solves
  • Who will use it
  • Any technical constraints mentioned

Output

  1. Feature Summary (2-3 lines): Restate what they want in clear terms
  2. Core Requirements (3-5 bullet points): What must work for this to succeed
  3. Implementation Steps (numbered, specific): Concrete actions in logical order, include what to build/modify/test
  4. Quick Wins vs Complexities: What's straightforward, what needs careful attention

Rules

  • Ask clarifying questions ONLY if the request is genuinely ambiguous
  • Assume reasonable defaults when details are missing
  • Focus on practical execution over theory
  • Keep language direct and actionable
  • No fluff, no obvious advice

Adapt your response to:

  • Simple requests: Streamlined plan (focus on steps)
  • Complex requests: Include architecture decisions
  • Vague requests: Propose the most likely interpretation first, then ask

START: Wait for the user's feature description.

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 · 37 lines · 0 tokens per session scan A 4dfe2b90c23d

Subscribe to this mod's changes

implement is a command published in the GitHub repository duongductrong/cursor-kit (21 stars, last pushed 5mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 346 tokens. 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.