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Synapse API — BNB Chain RPC Endpoint
x402
Synapse API — BNB Chain 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 2026-10-18).
Provides JSON-RPC access to the BNB Smart Chain (BSC) network via a pay-per-call HTTP endpoint using x402 micropayments
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
A JSON-RPC 2.0 formatted response containing the result field with the requested chain data (balance in hex wei, block object, transaction receipt, contract return value, etc.) or an error object with code and message if the call fails.
Example use cases
Check BSC wallet balance on-chain
“Look up the BNB Smart Chain balance for wallet 0x742d35Cc6634C0532925a3b8D4C9E3D9F3a1234 — use the eth_getBalance method and return the result in wei.”
Read a BSC smart contract state
“Call the BNB Smart Chain RPC with eth_call to read the totalSupply function from the PancakeSwap CAKE token contract at 0x0E09FaBB73Bd3Ade0a17ECC321fD13a19e81cE82 on the latest block.”
Broadcast signed transaction to BNB network
“I have a signed raw transaction hex for BNB Smart Chain — can you broadcast it using eth_sendRawTransaction so it gets submitted to the BSC network?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/bnb/rpc?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need pay-per-call, no-subscription access to BNB Smart Chain RPC without managing your own node or committing to a monthly plan. Ideal for agents that make infrequent or bursty BSC queries and want to pay only for what they use via x402 micropayments ($0.01 USDC per call). Prefer over self-hosted nodes when operational simplicity matters, and over Infura/Alchemy when you need x402-native micropayment billing compatible with autonomous agent workflows.
Side effects
- Invalid JSON-RPC method name returns error code -32601 (method not found)
- Malformed params array causes -32602 (invalid params) error
- Payment not included or insufficient results in HTTP 402 response
- Network congestion or node unavailability causes timeout or -32000 server error
- Invalid contract address or ABI encoding returns execution revert error
- Unsupported BNB-specific methods may not be available on this node
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
Reviews
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