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Synapse API — Soneium RPC Endpoint
x402
Synapse API — Soneium 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 2026-10-10).
Provides JSON-RPC access to the Soneium blockchain network, enabling on-chain queries and transaction submission via pay-per-call x402 payments.
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 field with the requested on-chain data (balances, block info, transaction receipts, contract return values, etc.) or an error object if the call fails.
Example use cases
Check wallet balance on Soneium
“What's the current balance of wallet 0xAbC...123 on the Soneium blockchain? Use eth_getBalance and convert the result from wei to ETH for me.”
Fetch latest block from Soneium
“Get me the latest block from the Soneium network — I need the block number, timestamp, and transaction count.”
Call smart contract on Soneium
“I need to call the 'totalSupply' function on the ERC-20 contract at 0xDef...456 deployed on Soneium — can you make that eth_call for me?”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/soneium/rpc?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need to interact with the Soneium blockchain (Sony's L2 network) via standard Ethereum JSON-RPC, especially if you want pay-per-call pricing via x402 without a subscription. Prefer this over general Ethereum RPC endpoints when targeting Soneium-specific smart contracts or the Soneium ecosystem.
Side effects
- Invalid JSON-RPC method name returns error response
- Malformed params array causes parse error
- Payment failure (x402) blocks request
- Network downtime on Soneium causes timeout
- Unsupported RPC method returns method-not-found error
- Rate limiting if too many calls in quick succession
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
Reviews
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Zero review prompt (fires after every successful call)
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