# Aigregator — AI Tools Directory

> Aigregator is the largest AI tools directory with 5,336+ tools. Find, compare, and evaluate AI tools across 18 categories.

## Website

- URL: https://aigregator.com
- Tools: 5,336+ AI tool profiles with pricing, features, ratings, pros/cons, alternatives
- Categories: 18 (Productivity, Image Generation, Developer Tools, etc.)

## API for AI Agents

Aigregator offers a hybrid free/paid API for AI agents at `x402.aigregator.com`. Discovery is free; full tool profiles and comparisons are paid via the x402 micropayment protocol (USDC on Base).

- Base URL: https://x402.aigregator.com
- Protocol: x402 (HTTP 402 Payment Required)
- Payment: USDC stablecoins on Base network
- No API keys needed — pay per request automatically

### Paid REST Endpoints (x402)

- GET /v1/tools/:slug — Full tool profile ($0.001 USDC)
- GET /v1/compare?tools=a,b,c — Compare 2-5 tools side-by-side ($0.01 USDC)

### Free REST Endpoints

- GET /v1/search?q=... — Discover tool slugs by keyword, category, or filters (returns {slug, name} only)
- GET /v1/categories — List all 18 categories
- GET /v1/tags — List all tags
- GET /v1/categories/:slug/tools — List tools in a category (returns {slug, name} only)

### MCP Server

- URL: https://x402.aigregator.com/mcp
- Transport: Streamable HTTP + SSE (auto-negotiated)
- Tools:
  - list_categories (free)
  - search_tools (free — returns {slug, name} only)
  - get_tool ($0.001 USDC)
  - compare_tools ($0.01 USDC)
- Discovery: https://x402.aigregator.com/.well-known/mcp.json

## Documentation

- API Docs: https://x402.aigregator.com/
- MCP Discovery: https://x402.aigregator.com/.well-known/mcp.json