skill-adaptor

skill-adaptor is a skill for Claude Code, Codex from zjunlp/SkillAdaptor. It costs 29 tokens per session (240 once invoked), scanned A, original, MIT.

A command-line tool for improving reusable agent skill instructions from failed tasks or benchmark results. It generates updated SKILL.md files for Codex and related agent environments.

In plain words
What is it for?
It is for initializing a SkillAdaptor workspace, supplying task briefs, running improvement iterations, and syncing the resulting skills into Codex skill directories.
Why use it?
It turns repeated task failures into changes to the instructions, helping skills handle known problems more reliably over time.

Skill for Claude CodeCodex

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/zjunlp/skilladaptor/skill-adaptor
Any agent
npx skills add zjunlp/SkillAdaptor --skill skill-adaptor
Clone the repo
git clone --depth 1 https://github.com/zjunlp/SkillAdaptor

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 skill-adaptor

README.md
[![agentmods](https://agentmods.dev/badge/skills/zjunlp/skilladaptor/skill-adaptor.svg)](https://agentmods.dev/skills/zjunlp/skilladaptor/skill-adaptor)
Your own site
<a href="https://agentmods.dev/skills/zjunlp/skilladaptor/skill-adaptor"><img src="https://agentmods.dev/badge/skills/zjunlp/skilladaptor/skill-adaptor.svg" alt="Measured on agentmods" height="20"></a>
Per session 29 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 240 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 $0.00029 $0.00240
Opus 5 $0.00015 $0.00120
Sonnet 5 $0.00006 $0.00048
Haiku 4.5 $0.00003 $0.00024

Measured 5d ago against content hash bcbbe48431f4, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

skill-adaptor 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 5d 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.

plugin/codex/skill-adaptor-plugin/skills/skill-adaptor/SKILL.md · 30 lines

What it actually says

SkillAdaptor (Codex)

Evolve reusable SKILL.md files from failure trajectories. Python CLI in this repo.

Quick run

From the SkillAdaptor repo (set skillAdaptorRoot to the directory containing run_plugin.py):

cd <skillAdaptorRoot>
python run_plugin.py init --workspace <workspace> --harness codex
# add task briefs under <workspace>/input_task/*.md
python run_plugin.py --workspace <workspace> --harness codex --max-iterations 2

Outputs: <workspace>/skills/<id>/SKILL.md — auto-synced to ~/.codex/skills/ and <workspace>/.agents/skills/.

Harness

Use --harness codex (not openclaw or claude-code) so adopted skills appear in Codex skill discovery paths.

Docs

See plugin/codex/README.md in the SkillAdaptor repository.

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. 5d ago First seen · 30 lines · 29 tokens per session scan A bcbbe48431f4

Subscribe to this mod's changes

skill-adaptor is a skill published in the GitHub repository zjunlp/SkillAdaptor (18 stars, last pushed 1mo ago), licensed MIT. It adds 29 tokens to every session and 240 once invoked, about $0.0001 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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