How to Connect to Polygon

In this guide, you'll learn the following simple methods of connection to your infrastructure:

• How to Connect to Polygon ETH RPC via cURL
• How to Connect to Polygon Tendermint RPC via cURL
• How to Connect to Cosmos REST for Polygon
• How to Connect to Polygon via WebSocket

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Learn more about Polygon infrastructure here.

How to Access Polygon Credentials

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Info:

If you haven't configured a node, learn how to deploy one here.

1. Log into the Blockdaemon app.
2. Select Dedicated Nodes from the sidebar menu
3. Go to the My Nodes tab and select the Polygon node you want to connect to.
4. Navigate to the Connect tab, where you’ll find:
   1. Endpoint URL
   2. Auth String
   3. Auth Token

Please reach out to [email protected] or your Customer Success Manager for support.

How to Connect to Polygon ETH RPC via cURL

curl -X POST -H 'Content-Type: application/json' --data '{"method": "RPC_METHOD", "params": [METHOD_PARAMS], "id": 1}' 'YOUR_ENDPOINT_URL/eth_rpc?auth=YOUR_AUTH_TOKEN'

• Replace RPC_METHOD with your chosen RPC method.
• Replace METHOD_PARAMS with params of your chosen method.
• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.
• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.

How to Connect to Polygon Tendermint RPC via cURL

curl -X POST -H 'Content-Type: application/json' --data '{"method": "RPC_METHOD", "params": [METHOD_PARAMS], "id": 1}' 'https://YOUR_ENDPOINT_URL/tendermint_rpc?auth=YOUR_AUTH_TOKEN'

• Replace RPC_METHOD with your chosen RPC method.
• Replace METHOD_PARAMS with params of your chosen method.
• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.
• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.

How to Connect to Cosmos REST for Polygon

curl -X GET -H 'Content-Type: application/json' -H "X-Auth-Token: YOUR_AUTH_TOKEN" 'YOUR_ENDPOINT_URL/cosmos_rest/blocks/latest'

• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.
• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.

How to Connect to Polygon via WebSocket

Tendermint WebSocket

wscat -H "X-Auth-Token: YOUR_AUTH_TOKEN" -c wss://YOUR_ENDPOINT_URL:8443/websocket

• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.
• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.

Eth WebSocket

This is currently only relevant for archive nodes.

wscat -H "X-Auth-Token: YOUR_AUTH_TOKEN" -c wss://YOUR_ENDPOINT_URL:8443/eth_websocket
Example: {"id":1,"jsonrpc":"2.0", "method":"eth_getBlockByNumber","params":["latest", true]}

• Replace YOUR_AUTH_TOKEN with the Auth Token in the Blockdaemon app.
• Replace YOUR_ENDPOINT_URL with the Endpoint URL in the Blockdaemon app.

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Info:

wscat is a tool that can connect over WebSocket(s) and may need to be installed. You can use your preferred tool of choice.

👋 Need Help?

Contact us through email or our support page for any issues, bugs, or assistance you may need.