Natsai • Monad Mainnet

JSON-RPC • WebSockets • Snapshots
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Monad Mainnet endpoints

Community-run infrastructure by Natsai: a reliable JSON-RPC endpoint, WebSocket streaming, and frequent Mainnet snapshots to speed up node bootstrapping. We apply fair-use limits to keep things stable for everyone.

Chain ID: 143 HTTPS + WSS on same host Snapshots: tar.lz4 + sha256 Updated frequently

RPC (HTTPS)

JSON-RPC over HTTPS. Use the buttons to test live, or copy/paste curl.
Endpoint (POST-only)
https://monad-mainnet-rpc.natsai.xyz/
RPC: not tested yet.
Fair-use: this public endpoint is rate-limited for reliability. If you need higher limits or dedicated capacity, email contact@natsai.xyz.
Show curl examples (copy/paste)
eth_chainId
curl -s https://monad-mainnet-rpc.natsai.xyz/ \
  -H 'content-type: application/json' \
  --data '{"jsonrpc":"2.0","method":"eth_chainId","params":[],"id":1}'
eth_blockNumber
curl -s https://monad-mainnet-rpc.natsai.xyz/ \
  -H 'content-type: application/json' \
  --data '{"jsonrpc":"2.0","method":"eth_blockNumber","params":[],"id":1}'

WebSockets (WSS)

WebSocket streaming over TLS. Use the button to subscribe to newHeads.
Endpoint
wss://monad-mainnet-rpc.natsai.xyz/
WS: not connected.
Show CLI example (websocat)
Subscribe to newHeads
printf '{"jsonrpc":"2.0","id":1,"method":"eth_subscribe","params":["newHeads"]}\n' \
  | websocat -t wss://monad-mainnet-rpc.natsai.xyz/
If you don't have websocat: sudo apt install -y websocat

Snapshots

We keep only the last ~24 hours. Use latest.json for the newest list.
Download latest snapshot Checksum Manifest
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Contact

Want to report issues or coordinate with Natsai?
contact@natsai.xyz