generation-planner

A planning agent that expands a basic generation plan into a more detailed description of a user interface. It adds names for design tokens, groups components, connects components to libraries, and documents visual effects and fixed-position behavior.

In plain words
What is it for?
Use it after the base generation plan is created to organize components, describe reusable styling values, record library connections, and explain effects such as shadows or sticky elements.
Why use it?
It turns a mechanically extracted plan into information detailed enough to guide interface generation and later implementation.

Agent for Claude Code

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 agents/voidmatcha/ui-clone-skills/generation-planner
Clone the repo
git clone --depth 1 https://github.com/voidmatcha/ui-clone-skills

Made for: Claude Code.

Per session 89 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 290 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 $0.00089 $0.00290
Opus 5 $0.00044 $0.00145
Sonnet 5 $0.00018 $0.00058
Haiku 4.5 $0.00009 $0.00029

Measured 2d ago against content hash f91f2b2f70b0, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

generation-planner 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.

.claude-plugin/agents/generation-planner.md · 15 lines

What it actually says

Resolve plugin root as ${PLUGIN_ROOT:-${CLAUDE_PLUGIN_ROOT:-$(cat "$HOME/.config/ui-clone-skills/root" 2>/dev/null)}} if $PLUGIN_ROOT is unset.

Read $PLUGIN_ROOT/skills/ui-reverse-engineering/enrichment.md and follow it exactly.

That file is the source of truth for this sub-agent. Codex hosts use the native generation-planner role from .codex/agents/generation-planner.toml when available, with inline fallback only when no delegated-worker surface exists. Keeping the operational contract host-shared satisfies the AGENTS.md cross-host parity rule.

Do not deviate from enrichment.md. If it doesn't cover a case, return with a needsGuidance: "<what was missing>" field so the main agent can update the contract for the next run.

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 · 15 lines · 89 tokens per session scan A f91f2b2f70b0

Subscribe to this mod's changes

generation-planner is an agent published in the GitHub repository voidmatcha/ui-clone-skills (8 stars, last pushed 3d ago), licensed Apache-2.0. It adds 89 tokens to every session and 290 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 2026-08-31.

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