metaxy: Skill for Claude Code

.claude/skills/claude-improve-config/SKILL.md

claude-improve-config is a skill for Claude Code from anam-org/metaxy. It costs 34 tokens per session (892 once invoked), scanned A, original, Apache-2.0.

A session-review assistant for finding mistakes and suggesting improvements to Claude configuration files, hooks, and skills.

In plain words
What is it for?
Reviewing a completed session, classifying problems, and proposing changes to CLAUDE.md or related configuration.
Why use it?
It helps turn repeated errors or inefficient workflows into clearer configuration rules.

Skill for Claude Code

Written for Claude Code: SessionEnd hook event. Also seen: mentions CLAUDE.md.

This is anam-org/metaxy's own configuration. It tells Claude Code how to work on metaxy itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything metaxy configures →

Part of the metaxy plugin — 8 skills, 5 agents, 1 hook shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to anam-org/metaxy. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/anam-org/metaxy/main/.claude/skills/claude-improve-config/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/anam-org/metaxy

Made for: Claude Code.

Or install metaxy, the plugin that ships this one along with the rest of its 8 skills, 5 agents, 1 hook.

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 claude-improve-config

README.md
[![agentmods](https://agentmods.dev/badge/skills/anam-org/metaxy/claude-improve-config/github.svg)](https://agentmods.dev/skills/anam-org/metaxy/claude-improve-config)
Your own site
<a href="https://agentmods.dev/skills/anam-org/metaxy/claude-improve-config"><img src="https://agentmods.dev/badge/skills/anam-org/metaxy/claude-improve-config/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 claude-improve-config

Your own site · 80×15
<a href="https://agentmods.dev/skills/anam-org/metaxy/claude-improve-config"><img src="https://agentmods.dev/badge/skills/anam-org/metaxy/claude-improve-config.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 34 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 892 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. Third-party audits
  • NVIDIA SkillSpector pass 7 Sept 2026
How audits are shown
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 $0.00034 $0.00892
Opus 5 $0.00017 $0.00446
Sonnet 5 $0.00007 $0.00178
Haiku 4.5 $0.00003 $0.00089

Measured 9d ago against content hash ec040894d091, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

claude-improve-config 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 9d 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/skills/claude-improve-config/SKILL.md · 142 lines

How it starts

The opening of the file, as written. The whole thing — 142 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Claude Config Self-Improvement

Analyze the current session for errors, mistakes, or inefficiencies and propose improvements to the .claude configuration to prevent similar issues in the future.

When to Use

  • After a session with significant mistakes or rework
  • When you notice patterns that could be prevented with better configuration
  • When explicitly requested via /claude-improve-config
  • Automatically triggered by the SessionEnd hook

Self-Reflection Process

1. Analyze the Session

Review the conversation for:

  • Repeated mistakes: Same error made multiple times
  • Misunderstandings: User had to correct Claude's interpretation
  • Inefficient workflows: Better approaches discovered late in the session
  • Tool misuse: Wrong tool for the job, excessive tool calls
  • Missing context: Information that would have helped if in CLAUDE.md
  • Ignored instructions: Existing CLAUDE.md rules that were violated

2. Categorize Issues

Rate severity:

  • Critical: Caused significant rework or user frustration
  • Moderate: Caused delays or minor corrections needed
  • Minor: Slight inefficiency but didn't impact outcome

Only propose changes for critical or moderate issues.

3. Propose Configuration Changes

Changes can include:

CLAUDE.md Updates:

  • New guardrails or constraints
  • Clarified existing instructions
  • Project-specific patterns to follow

New Hooks:

  • PreToolUse hooks to prevent specific mistakes
  • PostToolUse hooks to validate outputs
  • Stop hooks to enforce checks before completion

New Skills:

  • Reusable knowledge for recurring tasks
  • Best practices for specific domains

4. Format the Proposal

Present proposals clearly:

## Session Reflection

### Issues Identified

1. **[Critical/Moderate]** Brief description of the issue
   - What happened: ...
   - Why it happened: ...
   - Impact: ...

### Proposed Changes

#### Change 1: [Type - CLAUDE.md/Hook/Skill]

**Rationale:** Why this change prevents the issue

**Implementation:**
[Show the exact changes to make]

#### Change 2: ...

Read the full file on GitHub · 142 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. 9d ago First seen · 142 lines · 34 tokens per session scan A ec040894d091

Subscribe to this mod's changes

claude-improve-config is a skill published in the GitHub repository anam-org/metaxy (120 stars, last pushed 20d ago), licensed Apache-2.0. It adds 34 tokens to every session and 892 once invoked, about $0.0002 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 2026-09-01.

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