eth_call - Polygon - Alchemy Documentation

Polygon API -Executes a new message call immediately without creating a transaction on the block chain. This is one of the most commonly used API calls. It is used to read from the blockchain which in

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 [email protected] 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<some-hash>"}. 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.
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params: [
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    {
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        "from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155",
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        "to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567",
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        "gas": "0x76c0",
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        "gasPrice": "0x9184e72a000",
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        "value": "0x9184e72a",
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        "data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"
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    }, 
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    "latest"]
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]
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Returns
DATA - the return value of executed contract.
Example
​Alchemy Composer​
The Alchemy Composer allows you to make a no-code example request via your browser. Try it out above!
Request
Curl
Postman
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curl https://polygon-mainnet.g.alchemyapi.io/v2/your-api-key \
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-X POST \
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-H "Content-Type: application/json" \
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-d '{"jsonrpc":"2.0","method":"eth_call","params":[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],"id":1}'
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URL: https://polygon-mainnet.g.alchemyapi.io/v2/your-api-key
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RequestType: POST
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Body: 
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{
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    "jsonrpc":"2.0",
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    "method":"eth_call",
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    "params":[{"from": "0xb60e8dd61c5d32be8058bb8eb970870f07233155","to": "0xd46e8dd67c5d32be8058bb8eb970870f07244567","gas": "0x76c0","gasPrice": "0x9184e72a000","value": "0x9184e72a","data": "0xd46e8dd67c5d32be8d46e8dd67c5d32be8058bb8eb970870f072445675058bb8eb970870f072445675"}, "latest"],
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    "id":1
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}
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Result
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{
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  "jsonrpc": "2.0",
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  "id": 1,
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  "result": "0x"
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}
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Polygon API
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eth_getProof - Polygon

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