development-plan

development-plan is a skill for Claude Code, Codex from markerikson/opencode-config-example. It costs 39 tokens per session (1,917 once invoked), scanned A, original, MIT.

A guide for creating detailed development plans for large, multi-stage software projects. It treats the plan as a living document containing tasks, progress, decisions, and lessons learned.

In plain words
What is it for?
Use it for major migrations, refactors, and projects lasting several weeks, especially when you need task breakdowns, progress tracking, and a record of what was learned.
Why use it?
It makes long projects easier to organise and review by showing what is complete, underway, or still required. It is intended for multi-phase work rather than small features or a single short session.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one.

Good fit Use it for major migrations, refactors, and projects lasting several weeks, especially when you need task breakdowns, progress tracking, and a record of what was learned.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/markerikson/opencode-config-example/development-plan
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.

Any agent
npx skills add markerikson/opencode-config-example --skill development-plan
Clone the repo
git clone --depth 1 https://github.com/markerikson/opencode-config-example

Made for: Claude Code, Codex.

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 development-plan

README.md
[![agentmods](https://agentmods.dev/badge/skills/markerikson/opencode-config-example/development-plan/github.svg)](https://agentmods.dev/skills/markerikson/opencode-config-example/development-plan)
Your own site
<a href="https://agentmods.dev/skills/markerikson/opencode-config-example/development-plan"><img src="https://agentmods.dev/badge/skills/markerikson/opencode-config-example/development-plan/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 development-plan

Your own site · 80×15
<a href="https://agentmods.dev/skills/markerikson/opencode-config-example/development-plan"><img src="https://agentmods.dev/badge/skills/markerikson/opencode-config-example/development-plan.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 39 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,917 The whole file, excluding the scripts and references it only reads on demand.
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 $0.00039 $0.01917
Opus 5.5 $0.00016 $0.00767
Sonnet 5.5 $0.00008 $0.00383
Haiku 4.5 $0.00004 $0.00192

Measured 1mo ago against content hash fdb739d37800, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

development-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 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.

config/skill/development-plan/SKILL.md · 323 lines

How it starts

The opening of the file, as written. The whole thing — 323 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Development Plan Skill

Create detailed, actionable development plans that serve as living documents for tracking multi-phase project execution.

When to Use This Skill

  • Multi-week projects with multiple phases
  • Work requiring detailed task breakdown
  • Projects needing progress tracking over time
  • Complex migrations or refactors
  • When you need to track "what we learned" alongside tasks

Don't use for:

  • Single-session work (use simple work doc from /new-work)
  • Small features (< 3 days)
  • Exploratory work without clear tasks yet

Document Template

Title and Metadata

# [Project Name] Development Plan & Progress Tracker

**Document Purpose:** This is a living document that tracks the overall development plan, task lists, and progress for [brief description].

**Last Updated:** YYYY-MM-DD

---

Section 1: Document Purpose

Explicitly state what this document tracks.

## Document Purpose

This document serves as the central hub for:

- **Overall Development Plan:** Breaking [work] into logical phases
- **Task Lists:** Detailed, actionable tasks for each phase
- **Progress Tracking:** What's done, what's in progress, what's remaining
- **Notes & Learnings:** Capturing insights, decisions, and discoveries
- **Open Questions:** Items requiring further investigation

This is a **living document** that will be updated frequently as we:
- Complete tasks and mark them done
- Discover new work that needs to be added
- Learn patterns and make design decisions
- Encounter and solve challenges

Section 2: Key Constraints (Optional but Recommended)

Critical scope limitations that need constant visibility.

## Key Constraints

> **⚠️ SCOPE:** [Critical constraint that affects all work]
>
> - NOT doing [thing]
> - NOT supporting [thing]
> - This is [approach/limitation]

Section 3: Phase Overview

High-level summary of all phases (1-2 sentences each).

## Phase Overview

The [work] is organized into [N] major phases:

### Phase 1: [Name]
**Goal:** [One sentence goal]
**Key Activities:** [3-5 bullets of major work]

### Phase 2: [Name]
...

Read the full file on GitHub · 323 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. 1mo ago First seen · 323 lines · 39 tokens per session scan A fdb739d37800

Subscribe to this mod's changes

development-plan is a skill published in the GitHub repository markerikson/opencode-config-example (48 stars, last pushed 5mo ago), licensed MIT. It adds 39 tokens to every session and 1,917 once invoked, about $0.0002 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.

Related

Other skills, from other repositories

story-readiness

Checks whether a story is ready to implement: clear acceptance criteria, no open questions, valid ADR and dependencies. Use when the user asks if a story, or the sprint's stories, are ready to start or build.

Donchitos/Claude-Code-Game-Studios · 48 tokens

recipe-create-meet-space

Create a Google Meet meeting space and share the join link.

googleworkspace/cli · 18 tokens

workthreads

SpecStory Workthreads - a weekly work-thread rollup across a team's repos from SpecStory coding histories (any agent - Claude Code, Codex, Cursor, Gemini, and more). It groups the window's sessions into threads of work per project and labels each new / open / recently closed, so a lead sees what shipped, what is still…

specstoryai/getspecstory · 126 tokens

atmos-config

Atmos root configuration: atmos.yaml discovery, precedence, deep merging, basepath, imports, minimal bootstrap, and routing to narrower Atmos skills.

cloudposse/atmos · 31 tokens

qa-project-bootstrap

Onboard a new QA engineer to an existing codebase, or audit an existing test architecture. Produces a 30-day ramp plan: codebase orientation, framework walkthrough, test architecture audit, mentorship pairing, and first-test guidance. Use when: "QA onboarding," "new tester," "ramp up," "test architecture audit,"…

petrkindlmann/qa-skills · 124 tokens

handle-linkedin-connection-request-signal

Use this skill when someone sends a team member an inbound LinkedIn connection request. An inbound request is a deliberate, ACTIVE first-party intent signal — meaningfully stronger than a passive profile view — and it deserves different scoring rules. The skill resolves and enriches the requester, gates them through…

swan-gtm/gtm-skills · 160 tokens