codesight-ai-context

CodeSight — AI Context Generator

Skill by ara.so — Daily 2026 Skills collection.

CodeSight compiles your codebase into a compact, structured context map (routes, models, components, dependencies) that AI coding assistants can read in one shot — eliminating thousands of tokens spent on manual file exploration. Supports 14 languages, 30+ frameworks, 13 ORM parsers, and an MCP server with 13 tools.

Installation

No installation required. Run directly with npx:

npx codesight

Or install globally:

npm install -g codesight
codesight

Requirements: Node.js >= 18, no API keys, no config files needed.

Core Commands

# Generate context map (default — outputs .codesight/CODESIGHT.md)
npx codesight

# Generate persistent wiki knowledge base (.codesight/wiki/)
npx codesight --wiki

# Generate AI tool config files (CLAUDE.md, .cursorrules, codex.md, AGENTS.md)
npx codesight --init

# Open interactive HTML report in browser
npx codesight --open

# Start as MCP server (13 tools) for Claude Code / Cursor
npx codesight --mcp

# Show blast radius for a specific file
npx codesight --blast src/lib/db.ts

# Generate optimized config for a specific AI tool
npx codesight --profile claude-code
npx codesight --profile cursor
npx codesight --profile copilot
npx codesight --profile codex

# Show token savings breakdown
npx codesight --benchmark

# Map markdown knowledge base (ADRs, meeting notes, Obsidian vault)
npx codesight --mode knowledge
npx codesight --mode knowledge ~/vault
npx codesight --mode knowledge ./docs

# Watch mode — regenerate on file changes
npx codesight --watch

# Git hook — regenerate on every commit
npx codesight --hook

What Gets Generated

Default Scan (npx codesight)

Outputs .codesight/CODESIGHT.md — a structured map including:

• Project metadata (stack, language, framework, package manager)
• All routes with HTTP methods and handler locations
• Database models with fields and relations
• UI components with props
• High-impact files ranked by dependency count
• Framework and ORM detection results

Wiki Knowledge Base (--wiki)

Outputs .codesight/wiki/ directory:

.codesight/wiki/
  index.md      — catalog of all articles (~200 tokens)
  overview.md   — architecture, subsystems, high-impact files
  auth.md       — auth routes, middleware, session flow
  payments.md   — payment routes, webhook handling, billing flow
  database.md   — all models, fields, relations
  users.md      — user management routes and models
  ui.md         — UI components with props
  log.md        — append-only operation log

AI Tool Config Files (--init)

Generates project-root files for each AI tool:

• CLAUDE.md — Claude Code project instructions
• .cursorrules — Cursor rules file
• codex.md — OpenAI Codex context
• AGENTS.md — general agent instructions

MCP Server Mode

Start CodeSight as an MCP server to give Claude Code or Cursor direct tool access:

npx codesight --mcp

MCP Tool Reference

Tool	Description
codesight_get_context	Full codebase context map
codesight_get_routes	All API routes with methods and handlers
codesight_get_models	All database models and schema
codesight_get_components	UI components with props
codesight_get_blast_radius	Impact analysis for a specific file
codesight_get_high_impact_files	Files ranked by dependency count
codesight_get_framework_info	Detected frameworks and ORMs
codesight_get_wiki_index	Wiki catalog (~200 tokens) for session start
codesight_get_wiki_article	Read one wiki article by name
codesight_lint_wiki	Wiki health check (orphans, stale, missing links)
codesight_get_knowledge	Knowledge map from markdown notes
codesight_benchmark	Token savings analysis
codesight_get_overview	Project overview summary

Configuring MCP in Claude Code

Add to your Claude Code MCP config (~/.claude/mcp_settings.json or project .mcp.json):

{
  "mcpServers": {
    "codesight": {
      "command": "npx",
      "args": ["codesight", "--mcp"],
      "cwd": "/path/to/your/project"
    }
  }
}

Configuring MCP in Cursor

Add to .cursor/mcp.json in your project root:

{
  "mcpServers": {
    "codesight": {
      "command": "npx",
      "args": ["codesight", "--mcp"]
    }
  }
}

Language & Framework Support

Language	AST Precision	Frameworks Detected
TypeScript	✅ Full AST	Next.js, NestJS, Hono, Remix, SvelteKit, Nuxt, Express, Fastify
JavaScript	Regex	Express, Fastify, Koa, Hapi
Python	Regex	Django, FastAPI, Flask, SQLAlchemy
Go	Regex	Gin, Echo, Fiber, Chi
Ruby	Regex	Rails, Sinatra
PHP	Regex	Laravel, Symfony
Elixir	Regex	Phoenix
Java	Regex	Spring Boot
Kotlin	Regex	Ktor, Spring Boot
Rust	Regex	Axum, Actix
Dart	Regex	Flutter
Swift	Regex	Vapor
C#	Regex	ASP.NET Core

ORM / Database Support

Drizzle, Prisma, TypeORM, Sequelize, Mongoose, MikroORM, SQLAlchemy, Django ORM, ActiveRecord, Eloquent, Ecto, GORM, and more (13 total).

Real Usage Patterns

Pattern 1: Session Start with Wiki

At the beginning of every AI session, load the wiki index instead of the full context map:

# In Claude Code or Cursor, at session start:
Use codesight_get_wiki_index to get project overview, 
then codesight_get_wiki_article for "auth" to understand authentication.

Pattern 2: Blast Radius Before Refactoring

Before modifying a shared file, check what breaks:

npx codesight --blast src/lib/database.ts

Output shows every file that imports the target, ranked by impact — critical before refactoring database connections, shared utilities, or types.

Pattern 3: CI/CD Integration

Keep context fresh on every push:

# .github/workflows/codesight.yml
name: Update AI Context
on:
  push:
    branches: [main]

jobs:
  update-context:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: '20'
      - name: Generate context map
        run: npx codesight
      - name: Generate wiki
        run: npx codesight --wiki
      - name: Generate knowledge map
        run: npx codesight --mode knowledge ./docs
      - name: Commit updated context
        run: |
          git config --local user.email "action@github.com"
          git config --local user.name "GitHub Action"
          git add .codesight/
          git diff --staged --quiet || git commit -m "chore: update AI context [skip ci]"
          git push

Pattern 4: Git Hook for Local Freshness

npx codesight --hook

This installs a post-commit hook that regenerates .codesight/CODESIGHT.md automatically after every commit.

Pattern 5: Knowledge Mapping for Decision Records

# Map ADRs and architecture docs
npx codesight --mode knowledge ./docs/decisions

# Map full Obsidian vault
npx codesight --mode knowledge ~/vault

# Outputs .codesight/KNOWLEDGE.md with:
# - Key decisions extracted from ADR files
# - Open questions surfaced from notes
# - Meeting notes indexed by date
# - Specs and PRDs cataloged

Consuming the Output in AI Sessions

Loading Context in Claude Code (manual)

Read .codesight/CODESIGHT.md for project context before answering questions.

Loading Wiki at Session Start

Read .codesight/wiki/index.md first. 
Then read the relevant article (e.g. .codesight/wiki/auth.md) 
only when questions about that domain arise.

Loading Combined Context

Read .codesight/CODESIGHT.md for code structure and 
.codesight/KNOWLEDGE.md for architectural decisions.

Token Savings Reference

Approach	Tokens per session	Savings vs baseline
Manual file exploration	26K–47K	baseline
npx codesight (context map)	3K–5K	7x–12x
--wiki targeted article	~200 + ~300/question	60x–130x

Real benchmark results from production codebases:

Project	Stack	Files	Output Tokens	Exploration Tokens	Savings
SaaS A	Hono + Drizzle	138	3,936	46,020	11.7x
SaaS B	Hono + Drizzle (monorepo)	53	3,629	26,130	7.2x
SaaS C	FastAPI + MongoDB	40	4,162	47,450	11.4x
Rails app	Rails + ActiveRecord	4,172	21,711	386,100	17.8x
Laravel app	Laravel + Eloquent	3,896	30,739	493,285	16x

.codesight Directory Structure

.codesight/
  CODESIGHT.md       — main context map (commit this)
  KNOWLEDGE.md       — knowledge/decision map (commit this)
  wiki/
    index.md         — wiki catalog (commit this)
    overview.md
    auth.md
    database.md
    payments.md
    users.md
    ui.md
    log.md

Add .codesight/ to git to persist context across sessions and team members. The wiki survives session restarts — every new conversation starts with full codebase knowledge from the first message.

Troubleshooting

Routes not detected:

• Ensure you're running from the project root (where package.json or equivalent lives)
• TypeScript projects get full AST parsing; other languages use regex — check that route files follow standard framework conventions
• For Python FastAPI, ensure router files use standard @app.get() / @router.post() decorators

Models showing 0 for MongoDB:

• This is correct behavior — codesight parses SQL ORM declarations. MongoDB collections without Mongoose schemas won't appear. Define Mongoose schemas explicitly to get model detection.

Wiki articles missing:

• Run npx codesight --wiki first to generate the wiki directory
• Use codesight_lint_wiki MCP tool or check .codesight/wiki/log.md for generation errors

Large monorepos (10K+ files) are slow:

• Add a .codesightignore file (same syntax as .gitignore) to exclude build artifacts, generated files, and node_modules subdirectories
• Typical scan time: 186ms–890ms for projects under 5K files

MCP server not connecting:

• Verify Node.js >= 18: node --version
• Check cwd in MCP config points to the actual project root
• Run npx codesight --mcp manually first to confirm it starts without errors

--init overwrites existing CLAUDE.md:

• Back up existing files before running --init on a project with custom AI instructions
• Generated files are additive starting points — merge with your existing content manually