indxr

Overview

Indxr provides a comprehensive solution for AI agents to understand codebases through structural indexing and a persistent knowledge wiki. It offers 26 MCP tools for symbol lookup, file summaries, caller tracing, and dependency analysis, plus 9 wiki tools for tracking architecture decisions and failure patterns. The server supports 27 programming languages and features self-updating wikis, Git structural diffing, and complexity hotspots analysis.

Try asking AI

After installing, here are 5 things you can ask your AI assistant:

• wiki_generate

  Initialize a new wiki and return structural context for page planning

  Try:Generate a knowledge wiki for our codebaseTry:Create architecture documentation pages for the project
• wiki_search

  Search wiki by keyword or concept; returns matching pages with excerpts

  Try:Search for authentication patterns in the wikiTry:Find pages related to payment processing
• wiki_read

  Read a wiki page by ID; returns full content with metadata

  Try:Read the architecture overview pageTry:Show me the content for the user module documentation
• wiki_status

  Check wiki health: page count, staleness, source file coverage

  Try:What's the status of our wiki?Try:Check if any wiki pages are outdated
• wiki_contribute

  Write knowledge back to the wiki (create or update pages)

  Try:Add documentation about the new user authentication flowTry:Update the API module documentation with new endpoints
• wiki_update

  Analyze code changes and return affected pages with diff context

  Try:Update the wiki for recent code changesTry:Which wiki pages need updating after the refactoring?
• wiki_compound

  Auto-route synthesized knowledge to the best matching page

  Try:Compound insights from the error logs into the wikiTry:Merge findings from multiple analysis sessions into documentation
• wiki_record_failure

  Record a failed fix attempt for future agents to learn from

  Try:Record the failed attempt to fix the payment processor bugTry:Document the failed approach to solving the memory leak issue
• find

  Find files/symbols by concept, name, callers, or signature pattern

  Try:Find functions related to user authenticationTry:Search for all occurrences of the 'processPayment' function
• summarize

  Understand files/symbols without reading source. Auto-detects format.

  Try:Summarize the main.rs fileTry:Give me an overview of the payment processing module
• read

  Read source by symbol name or line range

  Try:Read the User struct definitionTry:Show me the implementation of the calculateTotal function
• get_hotspots

  Most complex functions ranked by composite score

  Try:Show me the most complex functions in the codebaseTry:Find performance hotspots in the payment module

Comparable tools

Installation

cargo install indxr --features wiki

indxr serve ./my-project --watch --wiki-auto-update

{
  "mcpServers": {
    "indxr": {
      "command": "indxr",
      "args": ["serve", "/path/to/project", "--wiki-auto-update"]
    }
  }
}

FAQ

What programming languages does indxr support?

Indxr supports 27 programming languages with tree-sitter AST parsing for 8 languages and regex extraction for 19 more.

How does the wiki system work?

The wiki provides persistent storage for architectural decisions, module responsibilities, and failure patterns. It automatically stays in sync with code changes and can be queried by AI agents.

On Hacker News

Recent discussion from the developer community.

• Indxr v0.4.0 – Teach your agents to learn from their mistakes▲ 2
  Story by bahdotshxx · 2026-04-07

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