planning-implementation

planning-implementation is a skill for Claude Code, Codex from TheSyart/emperor-agent. It costs 89 tokens per session (2,912 once invoked), scanned A, original, MIT.

A planning tool that turns a technical specification into a detailed implementation plan before coding begins. The plan covers design, tasks, dependencies, completion checks, and risks.

In plain words
What is it for?
Use it before multi-step feature work, migrations, or refactoring to create an executable plan with task details and acceptance criteria.
Why use it?
It helps expose missing requirements and difficult dependencies before they lead to wasted coding or an incomplete implementation.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: mentions subagents; mentions Claude Code; mentions Codex.

Good fit Use it before multi-step feature work, migrations, or refactoring to create an executable plan with task details and acceptance criteria.

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Install with agentmods
npx agentmods add skills/thesyart/emperor-agent/planning-implementation
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 TheSyart/emperor-agent --skill planning-implementation
Clone the repo
git clone --depth 1 https://github.com/TheSyart/emperor-agent

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 planning-implementation

README.md
[![agentmods](https://agentmods.dev/badge/skills/thesyart/emperor-agent/planning-implementation.svg)](https://agentmods.dev/skills/thesyart/emperor-agent/planning-implementation)
Your own site
<a href="https://agentmods.dev/skills/thesyart/emperor-agent/planning-implementation"><img src="https://agentmods.dev/badge/skills/thesyart/emperor-agent/planning-implementation.svg" alt="Measured on agentmods" height="20"></a>
Per session 89 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,912 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. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 1 finding, up to medium

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • medium Prompt Injection · line 165
    Large whitespace padding was detected (a block of blank lines or a long run of spaces). This can push injected instructions below or to the right of the visible area so a human reviewer never sees them while the agent still reads them. Manual review of the hidden content is recommended.
    Fix: Remove the large whitespace padding (blank-line blocks or long space runs) and review any content hidden below or to the right of it. Keep skill files compact and reviewable so no instructions can be
How audits are shown
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 $0.00089 $0.02912
Opus 5 $0.00044 $0.01456
Sonnet 5 $0.00018 $0.00582
Haiku 4.5 $0.00009 $0.00291

Measured 8d ago against content hash cb54f80bd41a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-07, from the pricing page.

Security

Grade A, and why

planning-implementation 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 8d 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.

skills-catalog/planning-implementation/SKILL.md · 253 lines

How it starts

The opening of the file, as written. The whole thing — 253 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Planning Implementation

Overview

Write comprehensive implementation planning documents — not just task lists. Each plan produces a self-contained, reviewable document that a skilled engineer with zero domain context can execute. Plans include per-task detailed design, quantified acceptance criteria, dependency topology, risk assessment, and progress tracking.

Announce at start: "Using planning-implementation skill to create the implementation plan."

Save plans to: docs/superpowers/plans/YYYY-MM-DD-<feature-name>.md

The Rule

Plan before code. Always. Even when the path seems obvious, writing it down surfaces hidden complexity, missing dependencies, and ambiguous requirements before they waste implementation time.

digraph planning_flow {
    rankdir=TB;
    "Requirements / Spec" [shape=doublecircle];
    "Phase 0: Setup" [shape=box];
    "Phase 1: Analyze" [shape=box];
    "Phase 2: Design & Decompose" [shape=box];
    "Phase 3: Verify & Output" [shape=box];
    "Plan Document" [shape=doublecircle];

    "Requirements / Spec" -> "Phase 0: Setup";
    "Phase 0: Setup" -> "Phase 1: Analyze";
    "Phase 1: Analyze" -> "Phase 2: Design & Decompose";
    "Phase 2: Design & Decompose" -> "Phase 3: Verify & Output";
    "Phase 3: Verify & Output" -> "Plan Document";
}

Quality Standard

The plan document must meet this bar: an engineer who has never seen this codebase, given only this document, can implement every task correctly and verify their own work. If they'd need to ask you a question, the plan has a gap.

Red Flags

These thoughts mean STOP — you're producing an insufficient plan:

Thought Reality
"This is too simple to need detailed design" Simple things become complex with no fallback. Write the design.
"Passing tests is the acceptance criteria" That's not AC. Write a binary checklist.
"I'll figure out dependencies later" Dependencies determine execution order. Draw the topology now.
"One sentence for design is enough" One sentence cannot guide implementation. Write data models, algorithms, invariants.
"Edge cases will be handled in code" Edge cases not listed now will be missed during implementation.
"Risks don't need mitigation strategies" Identifying without mitigating = not identifying. Every risk needs a response.
"Too many source files to list them all" Then it's not a complete plan. Trace every file.
"Estimates are always wrong anyway" A wrong estimate beats no estimate. Estimate by order of magnitude.
"I'll think about tests later" Tests are a design tool now. List test cases before writing tasks.
"Skipping RED confirmation saves time" Skipping RED = tests are invalid. Fail first, then pass.

Read the full file on GitHub · 253 lines

Files

What ships with it

2 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

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. 8d ago First seen · 253 lines · 0 tokens per session scan A cb54f80bd41a

Subscribe to this mod's changes

planning-implementation is a skill published in the GitHub repository TheSyart/emperor-agent (183 stars, last pushed 26d ago), licensed MIT. It adds 89 tokens to every session and 2,912 once invoked, about $0.0004 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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