# Wiki QA > Answer repository questions grounded entirely in source code evidence. Use when user asks a question about the codebase, user wants to understand a specific file, function, or component, or user asks \"how does X work\" or \"where is Y defined\". Use when this capability is needed. - Skill: `tomevault-io/wiki-qa-3` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/wiki-qa-3` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/wiki-qa-3/raw - Safety review: pending - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Web & Frontend - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/wiki-qa-3 --- # Wiki Q&A Answer repository questions grounded entirely in source code evidence. ## When to Use - User asks a question about the codebase - User wants to understand a specific file, function, or component - User asks "how does X work" or "where is Y defined" ## Procedure 1. Detect the language of the question; respond in the same language 2. Search the codebase for relevant files 3. Read those files to gather evidence 4. Synthesize an answer with inline citations ## Response Format - Use `##` headings, code blocks with language tags, tables, bullet lists - Cite sources inline: `(src/path/file.ts:42)` - Include a "Key Files" table mapping files to their roles - If information is insufficient, say so and suggest files to examine ## Rules - ONLY use information from actual source files - NEVER invent, guess, or use external knowledge - Think step by step before answering ## When to Use This skill is applicable to execute the workflow or actions described in the overview. --- > Converted and distributed by [TomeVault](https://tomevault.io/claim/sickn33) — claim your Tome and manage your conversions.