Programming Languages and Frameworks Understand Anything Supports: Complete Guide

Understand Anything supports 23 programming languages including JavaScript, TypeScript, Python, Java, Go, and Rust, alongside 10 frameworks such as React, Next.js, Django, and Express, using data-driven prompt files located in understand-anything-plugin/skills/understand/.

The Egonex-AI/Understand-Anything repository provides an AI-powered codebase analysis engine designed to comprehend any software project. While the system can process arbitrary code, it ships with explicit knowledge-base prompts for specific programming languages and web frameworks that enhance the accuracy of its knowledge graph generation and architectural analysis.

Supported Programming Languages

Understand Anything recognizes 23 distinct languages through dedicated prompt files stored in understand-anything-plugin/skills/understand/languages/. Each *.md file contains language-specific concepts, import patterns, and structural conventions that guide the LLM during analysis.

Language	Prompt File
JavaScript	javascript.md
TypeScript	typescript.md
Python	python.md
Java	java.md
Go	go.md
Rust	rust.md
C++	cpp.md
C#	csharp.md
Ruby	ruby.md
PHP	php.md
Kotlin	kotlin.md
Swift	swift.md
SQL	sql.md
GraphQL	graphql.md
HTML	html.md
CSS	css.md
JSON	json.md
YAML	yaml.md
Dockerfile	dockerfile.md
Markdown	markdown.md
Protobuf	protobuf.md
Shell (Bash)	shell.md
Terraform	terraform.md

The project-scanner agent automatically loads the appropriate prompt when it detects file extensions or configuration files (e.g., tsconfig.json for TypeScript, pyproject.toml for Python) above a frequency threshold.

Supported Frameworks

Beyond core languages, Understand Anything includes framework addenda that enrich the knowledge graph with architectural patterns specific to popular web and backend frameworks. These reside in understand-anything-plugin/skills/understand/frameworks/ and are appended to base prompts when framework-specific signatures are detected.

Framework	Addendum File
React	react.md
Next.js	nextjs.md
Vue	vue.md
Angular (via Spring patterns)	spring.md
Express	express.md
FastAPI	fastapi.md
Flask	flask.md
Django	django.md
Gin (Go)	gin.md
Rails	rails.md

Each addendum provides project-structure guides, canonical file roles, and layer assignment rules that the file-analyzer and architecture-analyzer agents use to create framework-aware edges (e.g., React component composition → contains edges, Express route handlers → serves edges).

How Language and Framework Detection Works

The detection pipeline operates through a four-step process orchestrated by the agent system:

1. File System Scanning: The project-scanner agent walks the repository (e.g., src/**/*.js, app/**/*.py) and builds a language frequency map based on extensions and configuration files.
2. Language Prompt Loading: When a language meets its detection threshold, the scanner loads the corresponding snippet (e.g., typescript.md) from understand-anything-plugin/skills/understand/languages/.
3. Framework Pattern Matching: The scanner searches for dependency signatures, such as:
   • package.json containing "react" or "express"
   • pom.xml containing <artifactId>spring-boot-starter</artifactId>
   • go.mod importing "github.com/gin-gonic/gin"
4. Prompt Augmentation: If a framework is detected, its addendum is appended to the base prompts sent to the LLM for file analysis and architectural layering.

Extending Support for New Technologies

Because the prompt system is data-driven, you can extend support without modifying core code. To add a new language, create a *.md file in understand-anything-plugin/skills/understand/languages/. To add a framework, create an addendum in understand-anything-plugin/skills/understand/frameworks/.

For example, to add Svelte support:

# Svelte Framework Addendum

> Injected when a package.json contains "svelte"

## Svelte Project Structure

...

Place this file at understand-anything-plugin/skills/understand/frameworks/svelte.md, and the project-scanner will automatically recognize Svelte projects during the next analysis run.

Practical Usage Examples

Analyze a Mixed-Language Repository

# Auto-detect all languages and frameworks

/understand

The scanner identifies all supported programming languages based on file extensions and configuration files, then applies the appropriate framework addenda automatically.

Force Output Language

/understand --language zh

The --language flag forces the LLM to generate summaries in Chinese while still using the same underlying language and framework prompts for code analysis.

Debug Detection Logic

/understand --debug

Debug output shows detection results:

Detected language: TypeScript (97%)
Detected framework: React

This confirms the system correctly identified the tech stack and will apply React-specific layer assignments (layer:ui, layer:service) as defined in frameworks/react.md.

Summary

• 23 programming languages are supported out-of-the-box via prompt files in understand-anything-plugin/skills/understand/languages/, including JavaScript, Python, Go, Rust, and SQL.
• 10 frameworks including React, Django, Express, and Gin are supported through addenda in understand-anything-plugin/skills/understand/frameworks/.
• Automatic detection occurs via the project-scanner agent, which matches file patterns and dependencies to load the correct prompts.
• Extensible architecture allows adding new languages or frameworks by simply creating markdown files in the appropriate directories.

Frequently Asked Questions

What programming languages does Understand Anything support by default?

Understand Anything ships with dedicated prompt files for 23 languages, including all major web languages (JavaScript, TypeScript, Python, Java, Go, Rust), data languages (SQL, GraphQL), configuration formats (JSON, YAML, Terraform), and markup languages (HTML, CSS, Markdown). The full list is maintained in understand-anything-plugin/skills/understand/languages/.

How does Understand Anything detect frameworks like React or Django?

The project-scanner agent examines dependency files (e.g., package.json for React, requirements.txt or pyproject.toml for Django, pom.xml for Spring) to identify framework signatures. Upon detection, it injects the corresponding framework addendum (e.g., react.md or django.md) into the LLM prompts, enabling framework-specific architectural analysis.

Can I add support for a programming language not included in the default installation?

Yes. The system is data-driven: create a new *.md file in understand-anything-plugin/skills/understand/languages/ following the conventions of existing files like python.md or go.md. The project-scanner agent automatically picks up new language files on the next run without requiring code changes.

Does Understand Anything handle monorepos with multiple languages?

Yes. The scanner builds a frequency map of all languages present in the repository. It loads the appropriate prompts for each detected language and can apply multiple framework addenda simultaneously (e.g., React for the frontend and Express for the backend), making it suitable for analyzing complex, polyglot codebases.

{
  "mcpServers": {
    "instagit": {
      "command": "npx",
      "args": ["-y", "instagit@latest"]
    }
  }
}