Extract Skill for Claude

Builds the gauntlet knowledge base from AST extraction and AI enrichment. Use when initializing or refreshing codebase knowledge for challenges.

509 tokens

context cost

the whole folder, loaded on every use

files

instructions only

copies elsewhere

how many repositories repackaged it

324

stars on the repo

on the repository, not the skill itself

Install

one command, takes just this skill from the repository

npx skills add https://github.com/athola/claude-night-market --skill extract

The instruction itself

5 sections, as written by the author

Extract Codebase Knowledge

Build or rebuild the .gauntlet/knowledge.json knowledge base.

When NOT To Use

Tribal knowledge no parser can see (use gauntlet:curate)
Building the code graph (use gauntlet:graph-build)

Steps

Identify target directory: use the current working directory

or a user-specified path

Run AST extraction: invoke the extractor script

   python3 ${CLAUDE_PLUGIN_ROOT}/scripts/extractor.py <target-dir>

AI enrichment: for each extracted entry, enhance the detail

field with natural language explanation of business logic, data

flow, architectural role, and rationale

Cross-reference: link related entries across modules by

matching imports, shared types, and data flow paths

Merge with annotations: preserve existing curated entries

in .gauntlet/annotations/

Save: write to .gauntlet/knowledge.json

Report: show summary by category, coverage gaps, difficulty

distribution

Exit Criteria

[ ] .gauntlet/knowledge.json exists and is valid JSON after the

skill completes; entries from .gauntlet/annotations/ are merged

and not overwritten

[ ] Report shows entry counts broken down by all 7 categories

(business_logic, architecture, data_flow, api_contract, pattern,

dependency, error_handling) with coverage gaps identified

[ ] Each extracted entry has a detail field containing a natural

language explanation (not just the raw AST node name)

[ ] Cross-reference links between related entries are present for

modules sharing imports, shared types, or data flow paths

Category Priority

business_logic (weight 7)
architecture (weight 6)
data_flow (weight 5)
api_contract (weight 4)
pattern (weight 3)
dependency (weight 2)
error_handling (weight 1)

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How to use it

Copy the folder

Take athola/extract from the repository into ~/.claude/skills for personal use, or into .claude/skills inside a project.

Check the name does not clash

The agent identifies a skill by the name field in its header. Two skills with the same name cannot sit side by side — one of them will be ignored.