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Synapse API — Sonic RPC Endpoint
x402
Synapse API — Sonic 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 a JSON-RPC interface to the Sonic blockchain network, enabling read and write interactions with Sonic chain data via pay-per-call 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 standard JSON-RPC response object containing either a 'result' field with the requested blockchain data (balance, block info, transaction receipt, etc.) or an 'error' field describing what went wrong. The exact shape depends on the RPC method called.
Example use cases
Check wallet balance on Sonic
“What's the current SONIC balance for wallet address 0xDEADBEEF... on the Sonic chain? Use the Sonic RPC to call eth_getBalance.”
Fetch latest block data
“Get the latest block number and its details from the Sonic blockchain RPC right now.”
Broadcast signed transaction
“Submit this signed raw transaction to the Sonic network via RPC: 0xf86c... — use eth_sendRawTransaction.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/sonic/rpcWhen to prefer
Choose this endpoint when you need direct JSON-RPC access to the Sonic blockchain network specifically, and you want pay-per-call micropayment billing via x402 rather than managing a subscription or API key. Prefer it over generic multi-chain RPC providers when Sonic-native access and per-call USDC payments are acceptable.
Side effects
- Invalid RPC method name returns JSON-RPC error -32601 (Method not found)
- Malformed params array causes -32602 (Invalid params)
- Payment failure or insufficient USDC returns HTTP 402
- Network congestion or Sonic node unavailability returns timeout or 503
- Calling write methods without a valid signed transaction returns execution error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
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