eval-evolve

eval-evolve is a command for Claude Code from Evol-ai/SkillCompass. It costs 0 tokens per session (2,199 once invoked), scanned A, original, MIT.

A command for repeatedly evaluating and improving a skill, optionally with help from an external plugin. It can stop after a set number of rounds or when the skill reaches a chosen score.

In plain words
What is it for?
Use it to validate a skill, read its current state, run multiple improvement rounds, set a maximum number of iterations or target score, and automate the process when the required plugin is installed.
Why use it?
It supports controlled, repeated refinement instead of relying on one edit. The evaluation scores help determine whether later changes are actually improvements.

Command for Claude Code

Written for Claude Code: shipped in a Claude Code plugin.

Part of the SkillCompass plugin — 1 skill, 14 commands, 3 hooks shipped together

Good fit Use it to validate a skill, read its current state, run multiple improvement rounds, set a maximum number of iterations or target score, and automate the process when the required plugin is installed.

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Install with agentmods
npx agentmods add commands/evol-ai/skillcompass/eval-evolve
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.

Clone the repo
git clone --depth 1 https://github.com/Evol-ai/SkillCompass

Made for: Claude Code.

Or install SkillCompass, the plugin that ships this one along with the rest of its 1 skill, 14 commands, 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 eval-evolve

README.md
[![agentmods](https://agentmods.dev/badge/commands/evol-ai/skillcompass/eval-evolve/github.svg)](https://agentmods.dev/commands/evol-ai/skillcompass/eval-evolve)
Your own site
<a href="https://agentmods.dev/commands/evol-ai/skillcompass/eval-evolve"><img src="https://agentmods.dev/badge/commands/evol-ai/skillcompass/eval-evolve/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 eval-evolve

Your own site · 80×15
<a href="https://agentmods.dev/commands/evol-ai/skillcompass/eval-evolve"><img src="https://agentmods.dev/badge/commands/evol-ai/skillcompass/eval-evolve.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 2,199 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 $0.00000 $0.02199
Opus 5.5 $0.00000 $0.00880
Sonnet 5.5 $0.00000 $0.00440
Haiku 4.5 $0.00000 $0.00220

Measured 1mo ago against content hash 8fd010d541a7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

eval-evolve 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.

commands/eval-evolve.md · 205 lines

How it starts

The opening of the file, as written. The whole thing — 205 lines — stays where its author put it; the contents beside it link to each section on GitHub.

/eval-evolve — Optional Plugin-Assisted Multi-Round Evolution via Ralph Loop

Locale: All templates in this spec are written in English. Detect the user's language from the session and translate user-facing text at display time per SKILL.md's Global UX Rules. Dimension labels: see the canonical table in SKILL.md.

Arguments

  • <path> (required): Path to the SKILL.md file to evolve.
  • --max-iterations <n> (optional): Max improvement rounds. Default: 6.
  • --target-score <n> (optional): Stop when overall_score >= n. Default: 70.
  • --internal (optional): Skip all interactive prompts. Used when this command is called programmatically by another command or script.

Prerequisites

  • Recommended model: Claude Opus 4.6 (claude-opus-4-6). Multi-round evolution requires consistent scoring across iterations to detect genuine improvements vs noise. Weaker models may cause the evolution loop to oscillate rather than converge.

  • This command requires the ralph-wiggum plugin. If not installed, present the user with a choice before attempting any plugin call:

    ┌─ Plugin required: ralph-wiggum ───────────────────────┐
    │  This command depends on the ralph-wiggum plugin to  │
    │  run the multi-round evolution loop.                  │
    │                                                        │
    │  [Install ralph-wiggum plugin]  [Cancel]              │
    └────────────────────────────────────────────────────────┘
    
    • If the user chooses Install ralph-wiggum plugin: run claude plugin install ralph-wiggum@claude-code-plugins and continue.
    • If the user chooses Cancel: stop immediately with no further action.
    • If --internal is passed, skip the prompt and run the install command directly.
    • Security note: No third-party code is fetched or executed without explicit user consent. The plugin install only proceeds after the user actively selects "Install".

What This Command Does

Generates and executes a /ralph-loop invocation that chains /eval-skill → /eval-improve automatically until the skill reaches PASS verdict (or hits the iteration limit). This is a power-user workflow, not the default path for normal evaluations.

Read the full file on GitHub · 205 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 · 205 lines · 0 tokens per session scan A 8fd010d541a7

Subscribe to this mod's changes

eval-evolve is a command published in the GitHub repository Evol-ai/SkillCompass (215 stars, last pushed 6mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 2,199 tokens. 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.