nav-skill-creator

nav-skill-creator is a skill for Claude Code from qf-studio/navigator. It costs 53 tokens per session (3,022 once invoked), scanned A, original, MIT.

A skill builder that studies patterns in your codebase and creates reusable instructions for repeated development work.

In plain words
What is it for?
Use it to automate a repeated process, enforce a coding pattern, or generate project-specific boilerplate with triggers, functions, templates, examples, tests, and documentation.
Why use it?
It removes the need to explain the same workflow manually and helps new generated work follow the project's existing conventions.

Skill for Claude Code

Written for Claude Code: allowed-tools in frontmatter. Also seen: mentions CLAUDE.md; mentions Claude Code.

Part of the navigator plugin — 33 skills, 6 agents shipped together

Good fit Use it to automate a repeated process, enforce a coding pattern, or generate project-specific boilerplate with triggers, functions, templates, examples, tests, and documentation.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/qf-studio/navigator/nav-skill-creator
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 qf-studio/navigator --skill nav-skill-creator
Clone the repo
git clone --depth 1 https://github.com/qf-studio/navigator

Made for: Claude Code.

Or install navigator, the plugin that ships this one along with the rest of its 33 skills, 6 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 nav-skill-creator

README.md
[![agentmods](https://agentmods.dev/badge/skills/qf-studio/navigator/nav-skill-creator/github.svg)](https://agentmods.dev/skills/qf-studio/navigator/nav-skill-creator)
Your own site
<a href="https://agentmods.dev/skills/qf-studio/navigator/nav-skill-creator"><img src="https://agentmods.dev/badge/skills/qf-studio/navigator/nav-skill-creator/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 nav-skill-creator

Your own site · 80×15
<a href="https://agentmods.dev/skills/qf-studio/navigator/nav-skill-creator"><img src="https://agentmods.dev/badge/skills/qf-studio/navigator/nav-skill-creator.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 53 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 3,022 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 $0.00053 $0.03022
Opus 5.5 $0.00021 $0.01209
Sonnet 5.5 $0.00011 $0.00604
Haiku 4.5 $0.00005 $0.00302

Measured 11d ago against content hash 8c1944a635f5, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

nav-skill-creator 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 11d ago.

The scan reads SKILL.md. This mod also ships 1 executable file (functions/skill_generator.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.

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.

Origin

Copies of this mod

1 near-identical copy found in the catalogue:

skills/nav-skill-creator/SKILL.md · 532 lines

How it starts

The opening of the file, as written. The whole thing — 532 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Create project-specific skills by analyzing codebase patterns and automating repetitive workflows.

When to Invoke

Auto-invoke when user mentions:

  • "Create a skill for [pattern]"
  • "Automate this workflow"
  • "We keep doing X manually"
  • "Enforce this pattern"
  • "Generate boilerplate for [feature type]"
  • "We need consistency for [task type]"

What This Does

  1. Analyzes codebase to understand project patterns
  2. Identifies best practices from existing code
  3. Generates skill with:
    • Auto-invocation triggers
    • Predefined functions
    • Templates
    • Examples
  4. Tests the generated skill
  5. Documents the new skill

Execution Steps

Step 1: Understand Skill Request

Ask clarifying questions:

  • What pattern/workflow to automate?
  • What triggers should invoke this skill?
  • What output format is expected?
  • Are there existing examples in the codebase?

Example dialogue:

User: "Create a skill for adding React components"
Assistant: "I'll analyze your codebase to understand React component patterns.
- What directory are components in?
- Do you use TypeScript or JavaScript?
- Do you want tests generated automatically?
- Are there style files (CSS/SCSS) per component?"

Step 2: Analyze Codebase Patterns

Use Task agent to explore (saves 60-80% tokens):

Use Task agent with subagent_type=Explore:
"Find existing [pattern type] in codebase:
 - Locate all [files matching pattern]
 - Identify common structure
 - Extract best practices
 - Find configuration files
 - Return summary of findings"

What to look for:

  • File naming conventions (kebab-case, PascalCase, etc.)
  • Directory structure patterns
  • Import/export patterns
  • Testing patterns
  • Configuration patterns
  • Documentation patterns

Example for React components:

Task agent finds:
- Components in src/components/
- PascalCase naming (UserProfile.tsx)
- Co-located tests (UserProfile.test.tsx)
- Props interfaces defined above component
- Export default at bottom

Read the full file on GitHub · 532 lines

Files

What ships with it

3 files 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. 11d ago Changed 8c1944a635f5
  2. 21d ago First seen · 532 lines · 53 tokens per session scan A c15fb1a881c2

Subscribe to this mod's changes

nav-skill-creator is a skill published in the GitHub repository qf-studio/navigator (355 stars, last pushed yesterday), licensed MIT. It adds 53 tokens to every session and 3,022 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 2026-09-25.

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