BaseBuilder Crypto Coins Endpoint

Choose this endpoint when you need programmatic access to cryptocurrency coin data and market prices via a pay-per-call x402 micropayment model, especially when building on Base/Coinbase ecosystem or when you want no subscription overhead and just pay per query.

• Payment not provided or insufficient — returns 402 Payment Required
• Invalid coin identifier or unsupported symbol — returns 400 or empty result
• Network/upstream data provider unavailable — returns 503 or timeout
• Malformed POST body — returns 400 Bad Request
• Rate limiting or quota exceeded — returns 429 Too Many Requests