create-implementation-plan

create-implementation-plan is a skill for Claude Code, Codex, Cursor from snyk/snyk-ls. It costs 45 tokens per session (906 once invoked), scanned A, original, Apache-2.0.

A guided way to write a structured plan for a Jira issue, a task tracked in Jira, using the project's template. It also creates test tracking and Mermaid diagrams, which are text files that show a process visually.

In plain words
What is it for?
Use it when starting a feature or Jira task, or when no implementation plan exists. It helps prepare the plan, test scenarios, diagrams, and progress notes before coding.
Why use it?
It gives a team a shared record of what will be changed, how it will be tested, and where work stopped. This makes hand-offs between work sessions easier.

Skill for Claude CodeCodexCursor

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 skills/snyk/snyk-ls/create-implementation-plan
Any agent
npx skills add snyk/snyk-ls --skill create-implementation-plan
Clone the repo
git clone --depth 1 https://github.com/snyk/snyk-ls

Made for: Claude Code, Codex, 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 create-implementation-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/snyk/snyk-ls/create-implementation-plan.svg)](https://agentmods.dev/skills/snyk/snyk-ls/create-implementation-plan)
Your own site
<a href="https://agentmods.dev/skills/snyk/snyk-ls/create-implementation-plan"><img src="https://agentmods.dev/badge/skills/snyk/snyk-ls/create-implementation-plan.svg" alt="Measured on agentmods" height="20"></a>
Per session 45 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 906 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 $0.00045 $0.00906
Opus 5 $0.00023 $0.00453
Sonnet 5 $0.00009 $0.00181
Haiku 4.5 $0.00005 $0.00091

Measured 5d ago against content hash 4e63b62930a3, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

create-implementation-plan 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 5d 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/skills/create-implementation-plan/SKILL.md · 117 lines

How it starts

The opening of the file, as written. The whole thing — 117 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create Implementation Plan

Creates implementation plans using the official project template with session hand-off support, TDD workflow, and progress tracking.

Quick Start

  1. Extract issue ID from branch: git branch --show-current (format: XXX-XXXX)
  2. Read Jira issue for context and acceptance criteria
  3. Create plan file: ${issueID}_implementation_plan.md (root directory)
  4. Create tests.json for test scenario tracking
  5. Create mermaid diagrams in docs/diagrams/
  6. STOP and wait for user confirmation

Template Location

Use template from: docs/templates/IMPLEMENTATION_PLAN_TEMPLATE.md

Replace all {{TICKET_ID}} and {{TICKET_TITLE}} placeholders with actual values.

Files to Create

File Location Purpose
Implementation plan ${issueID}_implementation_plan.md Main plan document
Test tracking tests.json Track test scenarios across sessions
Flow diagrams docs/diagrams/${issueID}_*.mmd Mermaid source files

All these files are gitignored - NEVER commit them.

Key Sections to Complete

1. SESSION RESUME (Critical for hand-off)

  • Update Quick Context with ticket info and branch
  • Fill Current State table
  • List Next Actions
  • Update Current Working Files table

2. Phase 1: Planning

  • 1.1 Requirements Analysis: List changes, error handling, files to modify/create
  • 1.2 Schema/Architecture Design: Add schemas, data structures
  • 1.3 Flow Diagrams: Create mermaid files, generate PNGs

3. Phase 2: Implementation (Outside-in TDD)

  • Use testing skill
  • CRITICAL: use outside-in TDD
  • Enforce strict test order:
    1. Smoke tests (E2E behavior)
    2. Integration tests (cross operating system behaviour, integrative behaviour)
    3. Unit tests
  • Break into checkpoint steps (completable in one session)
  • Each step: tasks, tests to write FIRST, commit message
  • Reference test IDs from tests.json
  • Add a plan self-check: integration tests must appear before unit tests

Read the full file on GitHub · 117 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. 5d ago First seen · 117 lines · 45 tokens per session scan A 4e63b62930a3

Subscribe to this mod's changes

create-implementation-plan is a skill published in the GitHub repository snyk/snyk-ls (83 stars, last pushed yesterday), licensed Apache-2.0. It adds 45 tokens to every session and 906 once invoked, about $0.0002 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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