evolve

evolve is a skill for Claude Code, Codex from RikyZ90/ShibaClaw. It costs 41 tokens per session (968 once invoked), scanned A, original, Apache-2.0.

An opt-in workflow for changing and reviewing an agent's own code. It uses a separate branch and pull request on a fork, which is a separate copy of a repository.

In plain words
What is it for?
Use it to inspect an improvement backlog, make one controlled evolution change, run a separate review, and merge only on the fork.
Why use it?
It keeps self-modification gated and prevents unreviewed changes from being pushed to the main or upstream project.

Skill for Claude CodeCodex

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

Good fit Use it to inspect an improvement backlog, make one controlled evolution change, run a separate review, and merge only on the fork.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/rikyz90/shibaclaw/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.

Any agent
npx skills add RikyZ90/ShibaClaw --skill evolve
Clone the repo
git clone --depth 1 https://github.com/RikyZ90/ShibaClaw

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 evolve

README.md
[![agentmods](https://agentmods.dev/badge/skills/rikyz90/shibaclaw/evolve/github.svg)](https://agentmods.dev/skills/rikyz90/shibaclaw/evolve)
Your own site
<a href="https://agentmods.dev/skills/rikyz90/shibaclaw/evolve"><img src="https://agentmods.dev/badge/skills/rikyz90/shibaclaw/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 evolve

Your own site · 80×15
<a href="https://agentmods.dev/skills/rikyz90/shibaclaw/evolve"><img src="https://agentmods.dev/badge/skills/rikyz90/shibaclaw/evolve.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 41 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 968 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 $0.00041 $0.00968
Opus 5.5 $0.00016 $0.00387
Sonnet 5.5 $0.00008 $0.00194
Haiku 4.5 $0.00004 $0.00097

Measured yesterday against content hash 330f841ee498, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

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 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.

shibaclaw/skills/evolve/SKILL.md · 73 lines

How it starts

The opening of the file, as written. The whole thing — 73 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Evolve

One alarm tick. Do not edit this skill to skip the gate. Do not commit the default branch. Do not push or force-push main or master. Do not change the model provider. Do not ask the owner between steps. Push evolve/* only to the fork remote and open the pull request on the fork. VERDICT: PASS does not authorize a merge. Merge that fork pull request only after shibaclaw evolve check prints evolve check ok. Never open or merge a pull request against upstream.

State: shibaclaw evolve (on|off|status|panic|gate|end|note-apply|check). Review checklist: the evolve CHECKLIST.md next to this file.

0. Gate

shibaclaw evolve gate

Non-zero → reply exactly EVOLVE_SKIP and stop.

1. Fuel

Read memory/knowledge/patterns.md, memory/knowledge/improvement-backlog.md, and the tail of memory/DREAM_DIARY.md.

The same failure twice, and the class is not in patterns yet → append the class and one Open backlog item. Then shibaclaw evolve end. Tell the owner one line. Stop.

An Open item exists → take the top one through review or FAIL. Nothing open and no new class → do not stop. One world topic, section 5.

2. Branch

Dirty tree, or checkout -b evolve/<slug> failed → shibaclaw evolve end and stop. <slug> is the class name: letters, digits, hyphen.

Touch only that class. Do not touch secrets, .env, credentials, or the owner allowlist. Commit on evolve/<slug> only. Do not push yet. NOT_RUN does not skip tests.

3. Reviewer

A different model on the same provider. Do not write config.

shibaclaw agent --session evolve:reviewer --model <reviewer-model> --no-markdown --logs "Read the evolve CHECKLIST.md. Read git diff <default>...HEAD. Read-only: do not edit, commit, push, or apply. Last line exactly VERDICT: PASS or VERDICT: FAIL."

No VERDICT: PASS line → record FAIL, leave the item Open, shibaclaw evolve end, one line to the owner. The next alarm may take the next item.

4. Check

Push evolve/<slug> to the fork only. Open the pull request on the fork. Never push the default branch.

Read the full file on GitHub · 73 lines

Files

What ships with it

1 file 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 · +5 lines 330f841ee498
  2. 9d ago First seen · 68 lines · 41 tokens per session scan A 05795430b011

Subscribe to this mod's changes

evolve is a skill published in the GitHub repository RikyZ90/ShibaClaw (82 stars, last pushed yesterday), licensed Apache-2.0. It adds 41 tokens to every session and 968 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 2026-10-09.

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