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Synapse API — opBNB RPC Endpoint
x402
Synapse API — opBNB RPC Endpoint is a paid API for AI agents from synapse-api-brown.vercel.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-09-15).
Provides JSON-RPC access to the opBNB blockchain network, enabling on-chain data queries and transaction submission via pay-per-call.
Price / call$0.01
Success—
StatusUnknown
How this service works
High-speed API suite for AI processing, web scraping, and smart data utilities across 57+ blockchain networks. Pay-per-call via x402.
Output
Returns a standard JSON-RPC response object containing the result of the requested RPC method, such as account balance, block details, transaction receipts, or contract return values, depending on the method called.
Example use cases
Check wallet balance on opBNB
“What's the current ETH balance of address 0xDEADBEEF... on the opBNB network?”
Fetch latest block number
“Get the latest block number from the opBNB blockchain right now.”
Submit signed transaction
“Broadcast this signed raw transaction to the opBNB network: 0xf86c...”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/opbnb/rpcWhen to prefer
Use this endpoint when you need pay-per-call, no-subscription access to the opBNB (BNB Layer 2) blockchain RPC without managing your own node. Prefer it over self-hosted nodes when cost-per-call economics are favorable and you need quick access to opBNB-specific chain data.
Side effects
- Invalid RPC method name returns JSON-RPC error code -32601
- Malformed params array causes parse error -32700
- Network downtime or Vercel cold start may cause timeout
- Unsupported opBNB-specific methods may return method not found
- Payment failure via x402 protocol blocks request execution
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
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