Graph Build Skill for Claude

Build Code Knowledge Graph

Build or update the .gauntlet/graph.db knowledge graph

for the current codebase.

Steps

• Detect target: Use the current working directory

or a user-specified path.

• Check for existing graph: If .gauntlet/graph.db

exists, run an incremental update. Otherwise, run a

full build.

• Run the build script:

For full build:

   python3 ${CLAUDE_PLUGIN_ROOT}/scripts/graph_build.py <dir>

For incremental update:

   python3 ${CLAUDE_PLUGIN_ROOT}/scripts/graph_build.py <dir> --incremental

• Report results: Show the JSON output including

files parsed, nodes created, edges created, and

duration.

• Suggest next steps: Recommend searching the graph

or running blast radius analysis.

When To Use

• At the start of a session to build structural awareness
• After significant code changes to update the graph
• Before running blast radius analysis or flow tracing
• When the user asks about codebase structure

When NOT To Use

• Querying a graph that already exists (use gauntlet:graph-search)
• Building the challenge knowledge base (use gauntlet:extract)

What Gets Parsed

The graph extracts nodes (File, Class, Function, Type,

Test) and edges (CALLS, IMPORTS_FROM, INHERITS, CONTAINS,

IMPLEMENTS, TESTED_BY) from 20+ languages including

Python, JavaScript, TypeScript, Go, Rust, Java, C/C++,

Ruby, and PHP.

Storage

• Database: .gauntlet/graph.db (SQLite with WAL mode)
• Auto-creates .gauntlet/.gitignore to prevent commits
• Incremental updates use SHA-256 hashing to skip

unchanged files

Exit Criteria

• [ ] .gauntlet/graph.db exists and is a valid SQLite file after

the skill completes; .gauntlet/.gitignore exists to prevent

the database from being committed

• [ ] Build report JSON includes all four keys: files_parsed,

nodes_created, edges_created, duration; values are

non-zero for non-empty codebases

• [ ] Incremental update path used when .gauntlet/graph.db already

exists (script invoked with --incremental); full build only

on first run

• [ ] Next-step suggestions presented to the user: search the graph

or run blast-radius analysis