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httpay.xyz x402 Ecosystem Index
x402
httpay.xyz x402 Ecosystem Index is a paid API for AI agents from httpay.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-14).
Returns a complete index of all x402 pay-per-call services, endpoints, prices, and facilitators across the ecosystem for AI agent discovery
Price / call$0.01
Success—
StatusUnknown
How this service works
Complete x402 ecosystem index — all known services, endpoints, prices, facilitators, and price comparisons. THE discovery endpoint for AI agents finding x402 services.
Output
A comprehensive JSON index listing all known x402 ecosystem services including native endpoints and Universal Gateway proxied services, with pricing, facilitator details, and price comparisons — effectively a directory of every pay-per-call API available via the x402 protocol on Base.
Example use cases
Example prompt
“Show me the full catalog of x402 pay-per-call APIs available on Base — I want to see all services, what they cost in USDC, and which ones cover token intelligence or DeFi yields so I can pick one to call.”
Technical details
Endpoint
POSThttps://httpay.xyz/api/x402-indexWhen to prefer
Use this endpoint when an AI agent needs to discover what x402-compatible APIs exist before deciding which one to call — it is the canonical discovery/index endpoint for the entire x402 ecosystem, covering 300+ services with pricing data, making it ideal for dynamic service selection, cost comparison, and capability discovery without needing pre-existing API keys or subscriptions.
Side effects
- Payment not included or invalid x402 USDC payment on Base returns 402 Payment Required
- Network issues reaching httpay.xyz return 5xx errors
- Index may be stale if underlying services have changed since last crawl
Output
Schema · Response
{
"type": "json",
"example": {
"description": "Complete x402 ecosystem index — all known services, endpoints, prices, facilitators, and price comparisons. THE discovery endpoint for AI agents finding x402 services."
}
}Tags
x402
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