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Synapse API — Abstract RPC Endpoint
x402
Synapse API — Abstract 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).
Executes JSON-RPC method calls against abstract blockchain networks, enabling cross-chain interactions across 57+ supported networks 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 the JSON-RPC response object from the target blockchain network, including the result field containing the queried on-chain data, transaction receipt, or contract call output. Error responses include a structured JSON-RPC error object with code and message fields.
Example use cases
Check on-chain wallet balance
“Query the abstract blockchain network with eth_getBalance for address 0xAbC123... at the latest block so I can see the current balance.”
Read smart contract state
“Make an eth_call RPC request to the abstract network with the contract address and encoded calldata to read a public variable from my deployed smart contract.”
Fetch latest block information
“Use the abstract RPC endpoint to call eth_getBlockByNumber with params ['latest', true] so I can see the most recent block details on the network.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/abstract/rpcWhen to prefer
Choose this endpoint when you need to make arbitrary JSON-RPC calls to abstract blockchain networks without running your own node, especially when you want pay-per-call pricing via x402 and access to 57+ chains through a single unified interface. It is best suited for agents that need flexible, low-overhead blockchain interaction without committing to a dedicated RPC provider subscription.
Side effects
- Invalid or unsupported RPC method name returns a JSON-RPC error with code -32601
- Malformed params array causes a parse error response with code -32700
- Network or node unavailability returns a 5xx HTTP error or JSON-RPC internal error code -32603
- Payment failure due to insufficient USDC balance returns a 402 Payment Required before execution
- Unsupported chain or network identifier returns an error indicating the network is not available
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| method | string | |
| params | array |
Tags
x402
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