skill-synthesizer

skill-synthesizer is an agent for Claude Code from claude-world/director-mode-lite. It costs 130 tokens per session (3,247 once invoked), scanned C, original, MIT.

An agent that creates tailored coding instructions for a specific development task. It produces separate instructions for doing the work, checking it, and correcting problems.

In plain words
What is it for?
Use it within an automated development cycle after requirements have been analyzed, or when task-specific skills need to be generated again.
Why use it?
It avoids relying on one generic workflow when a task needs its own implementation and verification approach.

Agent for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: model in frontmatter; reads .claude/ paths; mentions Claude Code.

Part of the director-mode-lite plugin — 36 skills, 14 agents shipped together

Good fit Use it within an automated development cycle after requirements have been analyzed, or when task-specific skills need to be generated again.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/claude-world/director-mode-lite/skill-synthesizer
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/claude-world/director-mode-lite

Made for: Claude Code.

Or install director-mode-lite, the plugin that ships this one along with the rest of its 36 skills, 14 agents.

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-synthesizer

README.md
[![agentmods](https://agentmods.dev/badge/agents/claude-world/director-mode-lite/skill-synthesizer/github.svg)](https://agentmods.dev/agents/claude-world/director-mode-lite/skill-synthesizer)
Your own site
<a href="https://agentmods.dev/agents/claude-world/director-mode-lite/skill-synthesizer"><img src="https://agentmods.dev/badge/agents/claude-world/director-mode-lite/skill-synthesizer/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 skill-synthesizer

Your own site · 80×15
<a href="https://agentmods.dev/agents/claude-world/director-mode-lite/skill-synthesizer"><img src="https://agentmods.dev/badge/agents/claude-world/director-mode-lite/skill-synthesizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 130 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 3,247 The whole file, excluding the scripts and references it only reads on demand.
Security scan C 4 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 $0.00130 $0.03247
Opus 5 $0.00065 $0.01623
Sonnet 5 $0.00026 $0.00649
Haiku 4.5 $0.00013 $0.00325

Measured 5d ago against content hash 914e198c70f0, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-09, from the pricing page.

Security

Grade C, and why

skill-synthesizer scanned grade C with 4 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.

Asks for rootlowPrivilege escalation

A mod that escalates privileges can change anything on the machine, not only the project.

`rm -rf /`, `sudo `, `eval $...`, `curl ... | bash`, `wget ... | sh`, `; rm `, backtick or `$(...)` command substitution, `> /dev/sd*`, `mkfs.`, `dd if=`.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Downloads and executes remote codemediumSupply chain

curl | sh runs whatever the server returns today, which is not necessarily what it returned when this was reviewed.

`rm -rf /`, `sudo `, `eval $...`, `curl ... | bash`, `wget ... | sh`, `; rm `, backtick or `$(...)` command substitution, `> /dev/sd*`, `mkfs.`, `dd if=`.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Recursive force deletemediumDestructive command

rm -rf with a variable or a broad path is one typo away from removing the wrong tree.

`rm -rf /`, `sudo `, `eval $...`, `curl ... | bash`, `wget ... | sh`, `; rm `, backtick or `$(...)` command substitution, `> /dev/sd*`, `mkfs.`, `dd if=`.

Downgraded: this mod is about security review, or the phrase is quoted, so it is likely naming the pattern rather than instructing it.

Makes network callslowCapability

Not a fault in itself. Listed so you know the mod talks to something, and to what.

`rm -rf /`, `sudo `, `eval $...`, `curl ... | bash`, `wget ... | sh`, `; rm `, backtick or `$(...)` command substitution, `> /dev/sd*`, `mkfs.`, `dd if=`.
agents/skill-synthesizer.md · 422 lines

How it starts

The opening of the file, as written. The whole thing — 422 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Synthesizer Agent (Meta-Engineering v2.0)

You are a specialized agent that dynamically generates custom Skills tailored to specific requirements. Your generated skills leverage Claude Code's hot-reload mechanism for immediate availability and integrate with the Meta-Engineering memory system.

Activation

Automatically activate when:

  • requirement-analyzer completes analysis
  • Skill evolution is required (after learning phase)
  • User requests skill regeneration

Core Responsibility

Generate three types of skills based on the analysis report and pattern recommendations:

  1. Executor Skill: Handles the actual implementation
  2. Validator Skill: Verifies implementation quality
  3. Fixer Skill: Auto-corrects identified issues

NEW: All generated skills include:

  • Lifecycle markers (task-scoped or persistent)
  • Pattern-based recommendations
  • Template improvements from evolution history

Input

Read from multiple sources:

# Primary: Requirement analysis
cat .self-evolving-loop/reports/analysis.json | jq '.'

# Pattern recommendations (from Phase -1A)
cat .self-evolving-loop/reports/patterns.json | jq '.'

Pattern Integration

Before generating skills, pull the recommendations from patterns.json with jq:

P=.self-evolving-loop/reports/patterns.json
jq -r '.recommended_agents[]?'   "$P"   # agents to prefer
jq -r '.recommended_skills[]?'   "$P"   # skills to prefer
jq -r '.template_improvements[]? | @json' "$P"
jq -r '.pattern_success_rate // 0.75'    "$P"

Fold recommended_agents, recommended_skills, and any template_improvements into the generated executor's guidance.

Skill Generation Process

Template Source (Primary)

The shipped templates in .self-evolving-loop/templates/ are the source of truth. At GENERATE, for each skill type read the template and fill its {{...}} placeholders:

Type Template file Output
Executor .self-evolving-loop/templates/executor-template.md generated-skills/executor-v{{VERSION}}.md
Validator .self-evolving-loop/templates/validator-template.md generated-skills/validator-v{{VERSION}}.md
Fixer .self-evolving-loop/templates/fixer-template.md generated-skills/fixer-v{{VERSION}}.md

Read the full file on GitHub · 422 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. 5d ago Changed · +6 lines 914e198c70f0
  2. 10d ago First seen · 416 lines · 130 tokens per session scan C e3fbcd1780aa

Subscribe to this mod's changes

skill-synthesizer is an agent published in the GitHub repository claude-world/director-mode-lite (81 stars, last pushed 9d ago), licensed MIT. It adds 130 tokens to every session and 3,247 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it C with 4 findings (asks for root, downloads and executes remote code, recursive force delete). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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