API Reference

eth_call - Polygon

Polygon API -Executes a new message call immediately without creating a transaction on the block chain.

Parameters

  • Object - The transaction call object
    • from: DATA, 20 Bytes - (optional) The address the transaction is sent from.
    • to: DATA, 20 Bytes - The address the transaction is directed to.
    • gas: QUANTITY - (optional) Integer of the gas provided for the transaction execution. eth_call consumes zero gas, but this parameter may be needed by some executions.

      NOTE: this parameter has a cap of 550 Million Gwei per request. Reach out to us at support@unifra.io if you want to increase this limit.

    • gasPrice: QUANTITY - (optional) Integer of the gasPrice used for each paid gas.

      Note: most of our users (95%+) never set the gasPrice on eth_call.

    • value: QUANTITY - (optional) Integer of the value sent with this transaction
    • data: DATA - (optional) Hash of the method signature and encoded parameters. For details see Ethereum Contract ABI
  • QUANTITY|TAG - Integer block number, or the string "latest", "earliest" or "pending" (see the default block parameter), OR the blockHash (in accordance with EIP-1898)

Note: the parameter is an object instead of a string and should be specified as: {"blockHash": "0x"}. Learn more here.

Note: eth_call has a timeout restriction at the node level. Batching multiple eth_call together on-chain using pre-deployed smart contracts might result in unexpected timeouts that cause none of your calls to complete. Instead, consider serializing these calls, or using smaller batches if they fail with a node error code.

params: [ { "from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155", "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567", "gas": "0x76c0", "gasPrice": "0x9184e72a000", "value": "0x9184e72a", "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675" }, "latest"] ]

Returns

DATA - The return value of executed contract.


Example

Request

curl https://polygon-mainnet.unifra.io/v1/your-api-key \ -X POST \ -H "Content-Type: application/json" \ -d '{"jsonrpc":"2.0","method":"eth_call","params":[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],"id":1}'
URL: https://polygon-mainnet.unifra.io/v1/your-api-key RequestType: POST Body: { "jsonrpc":"2.0", "method":"eth_call", "params":[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"], "id":1 }

Result

{ "jsonrpc": "2.0", "id": 1, "result": "0x" }

🚧

The below parameter inputs do not work, please reference the section above instead.

Path Params
string
required
Body Params
string
Defaults to 2.0
string
Defaults to eth_call
array of objects
params
string
Defaults to 1
Responses

Language
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application/json