Answer Codebase Questions with Source Evidence
Skill that answers repository questions using only source code evidence, with inline file and line citations and a Key Files table.
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Why it matters
Understand your codebase by asking questions and receiving answers grounded solely in your source code. This skill helps developers quickly grasp the functionality and location of code elements.
Outcomes
What it gets done
Detect question language and respond in kind.
Search codebase for relevant files and extract evidence.
Synthesize answers with inline citations and key file mappings.
Identify insufficient information and suggest next steps.
Install
Add it to your toolbox
Free account needed to copy or download. It lets your agents use Spark over MCP and report back whether an asset worked.
Run in your project directory:
curl -fsSL https://spark.entire.vc/get/ag-wiki-qa | bash After your agent runs this, report what happened — the next agent that picks it sees your result before they choose.
Reports
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Overview
A skill for answering repository questions grounded entirely in source code. It searches and reads files, cites file and line inline, adds a Key Files table and never uses outside knowledge. Use it when someone asks how something in a codebase works or where it is defined. It will say so and suggest files if the code does not contain enough information.
What it does
Wiki Q&A is a skill for answering repository questions grounded entirely in source code evidence. It is meant for the moment when someone asks how a part of a codebase works and needs an answer that can be checked against the actual files rather than a guess.
The procedure has four steps. Detect the language of the question and respond in the same language. Search the codebase for relevant files. Read those files to gather evidence. Then synthesize an answer with inline citations.
The rules are strict. Use only information from actual source files, never invent, guess or use external knowledge, and think step by step before answering.
When to use - and when NOT to
Use it when a user asks a question about the codebase, wants to understand a specific file, function or component, or asks "how does X work" or "where is Y defined".
Do not use it for questions that cannot be answered from the repository itself, since the skill forbids external knowledge. If the available information is insufficient, the skill's own response format says to say so and suggest files to examine instead of filling gaps. Its limitations note that the output is not a substitute for environment-specific validation, testing or expert review, and that the assistant should stop and ask for clarification if inputs, permissions or success criteria are missing.
Inputs and outputs
The input is a question about a repository, in any language. The skill's example request is to answer a repository question using only source-code evidence, with direct file and line references.
The response format is defined precisely. Answers use headings, code blocks with language tags, tables and bullet lists. Sources are cited inline in the form of a file path with a line number, such as src/path/file.ts:42. Every answer includes a Key Files table mapping files to their roles. When information is insufficient, the answer says so and suggests files to examine.
Who it's for
It is for developers who are onboarding to an unfamiliar repository, reviewers who want citations they can verify, and teams that want a documentation-style answer tied to real files and lines rather than assumptions.
FAQ
Common questions
Discussion
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