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Synapse API — Monad RPC Endpoint
x402
Synapse API — Monad 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 2026-10-15).
Proxies JSON-RPC calls to the Monad blockchain network, enabling agents to query chain state, send transactions, and interact with Monad smart contracts.
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 the 'result' field with the requested blockchain data (e.g. balance in hex wei, block number, transaction receipt object, or contract return data), or an 'error' object with code and message if the call fails.
Example use cases
Check Monad wallet balance
“What's the current MON balance for address 0x1234abcd... on the Monad network? Give me the raw wei value.”
Fetch latest Monad block
“Get the latest block number on Monad right now using eth_blockNumber.”
Call a Monad smart contract
“Run an eth_call on the Monad network against contract 0xDEAD... with calldata 0x70a08231... to check a token balance — no state change needed.”
Technical details
Endpoint
POSThttps://synapse-api-brown.vercel.app/api/monad/rpc?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you specifically need to interact with the Monad blockchain via JSON-RPC and want pay-per-call pricing without managing your own node. Prefer over self-hosted nodes when you need low-setup Monad access with USDC micropayments via x402.
Side effects
- Invalid RPC method name returns JSON-RPC error with code -32601
- Malformed params array causes parse error -32700
- Network congestion or Monad node unavailability returns 503 or timeout
- Payment failure (insufficient USDC) blocks the call before it reaches the RPC layer
- Calling a non-existent contract address returns null result without error
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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