llms.txt Content
# APIbase — Universal API Hub for AI Agents
# https://apibase.pro
> 618 API tools from 191 providers via one MCP endpoint.
> Supports x402 (USDC on Base) and MPP payments.
## Quick Start for Agents
- Connect: POST https://apibase.pro/mcp (MCP Streamable HTTP)
- Discover tools: Call prompt "discover_tools" with task or category
- Full catalog: GET https://apibase.pro/api/v1/tools (all 618 tools, JSON schemas)
- OpenAPI spec: GET https://apibase.pro/.well-known/openapi.json
## Progressive Disclosure
618 tools across 21 categories. Use discover_tools prompt to find relevant tools:
- No args → category index (21 categories with counts)
- category="finance" → 27 finance tools
- task="search flights" → amadeus, aviasales, sabre tools ranked by relevance
All tools remain callable via tools/call regardless of discovery.
## Categories (21)
travel, weather, finance, crypto, search, news, location, health,
entertainment, education, jobs, space, social, legal, business,
developer, media, infrastructure, messaging, marketing, world
## Payment
- Protocol: x402 (HTTP 402 Payment Required) or MPP (Authorization: Payment)
- Token: USDC on Base mainnet (x402) or Tempo (MPP)
- Prices: $0.001–$29.99 per call (most tools $0.001–$0.005)
- Details: https://apibase.pro/.well-known/x402-payment.json
- IMPORTANT: use ONE protocol per request, not both
- If using mppx SDK: set polyfill: false to avoid intercepting x402 requests
## Agent Integration Guide
1. Match price to wallet — fetch only tools you can afford:
GET /api/v1/tools?max_price=0.01 # only tools ≤ $0.01
GET /api/v1/tools?tier=micro # < $0.01
GET /api/v1/tools?tier=standard # $0.01–$0.99
GET /api/v1/tools?tier=premium # $1+ (only 3 tools: domain reg, ad spend)
2. Each tool entry includes:
pricing.price_usd — sticker price per call
pricing.cache_hit_price_usd — discounted balance-tier rate (10% of price)
tier — micro | s