# Aigregator — AI Tools Directory API > Aigregator provides structured data on 5,000+ AI tools including pricing, features, ratings, pros/cons, and alternatives. ## API Base URL: https://x402.aigregator.com ### Paid endpoints (x402 micropayments) - GET /v1/tools/:slug — Full tool profile ($0.001 USDC) - GET /v1/compare?tools=a,b,c — Compare 2-5 tools ($0.01 USDC) - POST /v1/advisor — Describe a need in plain language, get ranked tool recommendations ($0.05 USDC) ### Free endpoints - GET /v1/search?q=... — Discover tool slugs (returns {slug, name} only) - GET /v1/categories — List all categories - GET /v1/tags — List all tags - GET /v1/categories/:slug/tools — List tools in a category (returns {slug, name} only) ### Payment Protocol: x402 (HTTP 402 Payment Required) Currency: USDC stablecoins Networks: Base (eip155:8453) Facilitator: https://facilitator.payai.network ### MCP Server URL: https://x402.aigregator.com/mcp Transport: Streamable HTTP + SSE (auto-negotiated) Price: free — no payment, no API key Tools: - list_categories - search_tools (returns {slug, name} only) - get_tool - compare_tools - recommend_tools ## Links - Website: https://aigregator.com - API reference: https://github.com/Aigregator/skills/blob/main/api.md - OpenAPI 3.1 spec: https://github.com/Aigregator/skills/blob/main/openapi.yaml - Claude Code skill: https://github.com/Aigregator/skills - Developer page: https://aigregator.com/developers - x402 Protocol: https://www.x402.org