os-evolution-planner

os-evolution-planner is a skill for Claude Code, Codex from richfrem/agent-plugins-skills. It costs 103 tokens per session (2,590 once invoked), scanned A, original, MIT.

A planning skill for improving plugins, skills, and agents through a structured plan-and-delegate workflow. It first compares possible approaches, then prepares a task plan and a delegation prompt.

In plain words
What is it for?
Use it to evolve a named plugin, skill, or agent, review an entire plugin, detect missing pieces, choose a development approach, and prepare work for Copilot CLI or another configured delegate.
Why use it?
It provides a repeatable way to identify gaps and organize larger improvements before assigning implementation work.

Skill for Claude CodeCodex

Part of the agent-agentic-os plugin — 20 skills, 4 commands, 2 agents, 3 hooks shipped together

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/richfrem/agent-plugins-skills/os-evolution-planner
Any agent
npx skills add richfrem/agent-plugins-skills --skill os-evolution-planner
Clone the repo
git clone --depth 1 https://github.com/richfrem/agent-plugins-skills

Made for: Claude Code, Codex.

Or install agent-agentic-os, the plugin that ships this one along with the rest of its 20 skills, 4 commands, 2 agents, 3 hooks.

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 os-evolution-planner

README.md
[![agentmods](https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/os-evolution-planner.svg)](https://agentmods.dev/skills/richfrem/agent-plugins-skills/os-evolution-planner)
Your own site
<a href="https://agentmods.dev/skills/richfrem/agent-plugins-skills/os-evolution-planner"><img src="https://agentmods.dev/badge/skills/richfrem/agent-plugins-skills/os-evolution-planner.svg" alt="Measured on agentmods" height="20"></a>
Per session 103 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,590 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 $0.00103 $0.02590
Opus 5 $0.00051 $0.01295
Sonnet 5 $0.00021 $0.00518
Haiku 4.5 $0.00010 $0.00259

Measured yesterday against content hash ccb3cf37451c, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

os-evolution-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 yesterday.

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.

plugins/agent-agentic-os/skills/os-evolution-planner/SKILL.md · 244 lines

How it starts

The opening of the file, as written. The whole thing — 244 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Role

os-evolution-planner transforms an evolution goal into a structured task plan and a Copilot CLI delegation prompt that can be dispatched in one premium request. Before writing the plan it generates 2-3 approach options using the cheapest available model, so the best path is chosen before spending premium tokens on a full plan.

Inputs

Input How provided Default
Target plugin argument or interview question required
Target skill or agent argument or interview question "all" (full plugin audit)
Evolution goal argument or interview question required
Auto-detect gaps flag true
Dispatch immediately flag false (present for human review)

Phase 0 — Read Environment Profile

Before doing anything else, check context/memory/environment.md:

  • If it exists, read the ## Delegation Strategy section to determine:
    • Brainstorm model (cheapest available)
    • Dispatch backend (Copilot CLI or Claude subagent)
  • If it does not exist, default to Claude-only mode and note:

    "No environment profile found — defaulting to Claude-only. Run os-environment-probe to unlock low-cost Copilot or Agy brainstorming."


Phase 1 — Brainstorm Options (cheap model)

Do this before gap detection and before writing any plan.

Native Plan Mode required for Phases 0-1: per graph-planning-superpowers-policy.md §2.1, enter host-native Plan Mode (Claude Code /plan, or the host's equivalent) before Phase 0 begins. Phases 0-1 are read/analysis-only — checking the environment profile and generating approach sketches. Do NOT write the task plan, delegation prompt, or any target file until the user has selected an option (A/B/C/modify) below and Plan Mode is exited.

Using the cheapest available model, generate 2-3 distinct approaches to the evolution goal. Each approach sketch is ~3-5 sentences: what it does, what it doesn't do, estimated effort, key tradeoff.

Model selection (use first that is available per environment profile):

Read the full file on GitHub · 244 lines

Files

What ships with it

4 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. yesterday Changed ccb3cf37451c
  2. 5d ago First seen · 244 lines · 103 tokens per session scan A 2ac2e37c7d23

Subscribe to this mod's changes

os-evolution-planner is a skill published in the GitHub repository richfrem/agent-plugins-skills (6 stars, last pushed yesterday), licensed MIT. It adds 103 tokens to every session and 2,590 once invoked, about $0.0005 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.