0x vs Mercury x402 API
Both are solid Cryptocurrency APIs. Choose based on your specific requirements.
Mercury x402 API
Deterministic financial data with cryptographic provenance. Payment required via x402 protocol (HTTP 402 + USDC on Base). All paid endpoints require `Authorization: Bearer x402_<token>` header. *...
0x
- No authentication required
- HTTPS supported
- CORS enabled for frontend use
- Currently flagged as inactive
Mercury x402 API
- Simple API key authentication
- HTTPS supported
| Feature | 0x | Mercury x402 API |
|---|---|---|
| Authentication | None | apiKey |
| HTTPS | Yes | Yes |
| CORS | Yes | Unknown |
When to use which?
0x is the better choice for quick prototypes and hackathons since it requires no authentication. 0x works directly from the browser with CORS enabled, making it better for frontend-only apps.