implement

A command for implementing a feature from a description, file path, or URL while fitting it into the project's existing structure and coding conventions.

In plain words
What is it for?
Use it to analyze a requested change, plan the required implementation, and continue an unfinished implementation from its project session files.
Why use it?
It organizes implementation work into a tracked plan and can resume from a saved checkpoint when the work spans multiple sessions.

Command

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/brennercruvinel/ccplugins/implement
Clone the repo
git clone --depth 1 https://github.com/brennercruvinel/CCPlugins
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 2,000 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 $0.02000
Opus 5 $0.00000 $0.01000
Sonnet 5 $0.00000 $0.00400
Haiku 4.5 $0.00000 $0.00200

Measured 2d ago against content hash c45b5f49a2bc, 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.

commands/implement.md · 303 lines

How it starts

The opening of the file, as written. The whole thing — 303 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Smart Implementation Engine

I'll intelligently implement features from any source - adapting them perfectly to your project's architecture while maintaining your code patterns and standards.

Arguments: $ARGUMENTS - URLs, paths, or descriptions of what to implement

Session Intelligence

I'll check for existing implementation sessions to continue seamlessly:

Session Files (in current project directory):

  • implement/plan.md - Current implementation plan and progress
  • implement/state.json - Session state and checkpoints

IMPORTANT: Session files are stored in a implement folder in your current project root, NOT in home directory or parent folders. If a session exists, I'll resume from the exact checkpoint. Otherwise, I'll create a new implementation plan and track progress throughout.

Phase 1: Initial Setup & Analysis

MANDATORY FIRST STEPS:

  1. Check if implement directory exists in current working directory
  2. If directory exists, check for session files:
    • Look for implement/state.json
    • Look for implement/plan.md
    • If found, resume from existing session
  3. If no directory or session exists:
    • Create implement/plan.md
    • Initialize implement/state.json
  4. Complete full analysis BEFORE any implementation

Critical: Use implement folder in current directory. Do NOT use $HOME/implement or any parent directory paths

I'll examine what you've provided and your project structure:

Source Detection:

  • Web URLs (GitHub, GitLab, CodePen, JSFiddle, documentation sites)
  • Local paths (files, folders, existing code)
  • Implementation plans (.md files with checklists)
  • Feature descriptions for research

Project Understanding:

  • Architecture patterns using Glob and Read
  • Existing dependencies and their versions
  • Code conventions and established patterns
  • Testing approach and quality standards

Phase 2: Strategic Planning

Based on my analysis, I'll create an implementation plan:

Plan Creation:

  • Map source features to your architecture
  • Identify dependency compatibility
  • Design integration approach
  • Break work into testable chunks

Read the full file on GitHub · 303 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 · 303 lines · 0 tokens per session scan A c45b5f49a2bc

Subscribe to this mod's changes

implement is a command published in the GitHub repository brennercruvinel/CCPlugins (2,780 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,000 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.