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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Note:

Visit the Polygon marketplace page to explore Blockdaemon’s Polygon infrastructure.

How to Access Your Blockdaemon Polygon Credentials

Once you have purchased your Blockdaemon Polygon infrastructure, you can access your credentials:

1. Log into the Blockdaemon app.
2. Click Nodes under the Access menu.
3. Select the Polygon node.
4. Select the Connect tab. You'll find the following information:
   1. Endpoint URL
   2. Auth String
   3. Auth Token

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Info:

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.