Skill Maker: AI Skill Factory for Tools

Skill Maker: AI Skill Factory for Tools is a skill for Cursor from plurigrid/asi. It costs 21 tokens per session (4,422 once invoked), scanned A, original, MIT.

A tool that creates new AI-agent skills by reading a tool's documentation and producing a tailored instruction file.

In plain words
What is it for?
It is for generating domain-specific skills from documentation, API specifications, and tool descriptions.
Why use it?
It reduces the manual work of studying an API and writing the structure needed for another agent to use it.

Skill for Cursor

Written for Cursor: installed under .cursor/. Also seen: mentions Claude Code.

Good fit It is for generating domain-specific skills from documentation, API specifications, and tool descriptions.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/plurigrid/asi/skill-maker
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 plurigrid/asi --skill skill-maker
Clone the repo
git clone --depth 1 https://github.com/plurigrid/asi

Made for: Cursor.

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 Maker: AI Skill Factory for Tools

README.md
[![agentmods](https://agentmods.dev/badge/skills/plurigrid/asi/skill-maker/github.svg)](https://agentmods.dev/skills/plurigrid/asi/skill-maker)
Your own site
<a href="https://agentmods.dev/skills/plurigrid/asi/skill-maker"><img src="https://agentmods.dev/badge/skills/plurigrid/asi/skill-maker/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 Maker: AI Skill Factory for Tools

Your own site · 80×15
<a href="https://agentmods.dev/skills/plurigrid/asi/skill-maker"><img src="https://agentmods.dev/badge/skills/plurigrid/asi/skill-maker.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 4,422 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 1 finding. A grade says what 26 rules found in the file — not that it is safe. Third-party audits
  • NVIDIA SkillSpector warn 7 Sept 2026
SkillSpector: 2 findings, up to high

These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →

  • high Rogue Agent · line 577
    Skill modifies its own code, configuration, or behavior at runtime. Self-modification enables an agent to escalate privileges, disable safety constraints, or install persistent backdoors.
    Fix: Prevent the skill from modifying its own code, SKILL.md, or configuration files. Treat skill files as read-only at runtime.
  • medium Rogue Agent · line 573
    Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.
    Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 $0.00021 $0.04422
Opus 5 $0.00010 $0.02211
Sonnet 5 $0.00004 $0.00884
Haiku 4.5 $0.00002 $0.00442

Measured 7d ago against content hash 27b82cbded45, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

Skill Maker: AI Skill Factory for Tools scanned grade A with 1 finding 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 7d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (skill_maker.py), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

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.

Runs shell commandslowCapability

Expected in a hook, worth knowing in a rule or an instructions file.

result = subprocess.run(
ies/music-topos/.cursor/skills/skill-maker/SKILL.md · 660 lines

How it starts

The opening of the file, as written. The whole thing — 660 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill Maker: AI Skill Factory

Version: 1.0.0 Status: Production Ready Trit Assignment: 0 (neutral, structural - scaffolds other skills) Principle: Template-driven skill generation with SplitMix seeding

Purpose

The Skill Maker is a meta-skill that automatically generates domain-specific AI skills by:

  1. Analyzing Tool Documentation - Firecrawl documentation, README, API specs
  2. Applying SKILL.md Pattern - Deterministic output, ternary polarity, SPI guarantee, parallelism
  3. Generating Custom SKILL.md - Fully functional, production-ready skill
  4. Registering with Claude Code - Immediate availability as new skill

Architecture

Skill Maker Pipeline
├─ Phase 1: Tool Discovery (Firecrawl + documentation analysis)
├─ Phase 2: Pattern Recognition (extract key operations, outputs, semantics)
├─ Phase 3: SplitMix Adaptation (add deterministic seeding to tool)
├─ Phase 4: Ternary Mapping (classify outputs to GF(3) = {-1, 0, +1})
├─ Phase 5: Parallelism Design (split-stream, work-stealing architecture)
├─ Phase 6: SKILL.md Generation (template expansion with tool specifics)
└─ Phase 7: MCP Integration (register and deploy skill)

Phase 1: Tool Discovery

Firecrawl-Based Documentation Analysis

from firecrawl import FirecrawlApp
import re

class ToolDiscovery:
    def __init__(self, tool_name: str):
        self.tool_name = tool_name
        self.app = FirecrawlApp(api_key=os.getenv("FIRECRAWL_API_KEY"))

    def discover_tool(self) -> dict:
        """Automatically discover tool via web search and documentation."""
        # Search for tool
        search_results = self.app.search(
            f"{self.tool_name} documentation API reference"
        )

        # Extract key URLs
        urls = [result['url'] for result in search_results[:5]]

        # Scrape and analyze
        tool_spec = {
            "name": self.tool_name,
            "description": "",
            "operations": [],
            "inputs": [],
            "outputs": [],
            "examples": [],
            "urls": urls
        }

        for url in urls:
            doc = self.app.scrape_with_markdown(url)
            content = doc['markdown']

            # Extract operations
            operations = self._extract_operations(content)
            tool_spec["operations"].extend(operations)

            # Extract examples
            examples = self._extract_examples(content)
            tool_spec["examples"].extend(examples)

            # Extract description
            if not tool_spec["description"]:
                tool_spec["description"] = content.split('\n')[0:5]

        return tool_spec

    def _extract_operations(self, content: str) -> list:
        """Extract operation names from documentation."""
        # Look for function/method signatures
        patterns = [
            r'def\s+(\w+)\(',           # Python
            r'fn\s+(\w+)\(',            # Rust
            r'function\s+(\w+)\(',      # JavaScript
            r'public\s+\w+\s+(\w+)\(',  # Java
        ]

        operations = []
        for pattern in patterns:
            matches = re.findall(pattern, content)
            operations.extend(matches)

        return list(set(operations))

    def _extract_examples(self, content: str) -> list:
        """Extract code examples from documentation."""
        # Look for code blocks
        examples = re.findall(r'```[\w]*\n(.*?)```', content, re.DOTALL)
        return examples[:5]  # Top 5 examples

Read the full file on GitHub · 660 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. 7d ago First seen · 660 lines · 21 tokens per session scan A 27b82cbded45

Subscribe to this mod's changes

Skill Maker: AI Skill Factory for Tools is a skill published in the GitHub repository plurigrid/asi (62 stars, last pushed 2mo ago), licensed MIT. It adds 21 tokens to every session and 4,422 once invoked, about $0.0001 per session on Opus 5. A static security scan graded it A with 1 finding (runs shell commands). No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-03.

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