`zks_*` namespace

These calls expose Elastic Network specific data such as L1→L2 fees, bridge contract addresses, and batch details.

Unless marked ✗, they behave the same as on a public ZKsync endpoint.

curl -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_L1ChainId","params":[]}'

Method index

Fees & gas

Method	✓ / ✗	Purpose
`zks_estimateFee`	✓	Fee estimate for an L2 tx
`zks_estimateGasL1ToL2`	✓	Gas estimate for L1→L2 call
`zks_getFeeParams`	✗	Current fee params

Blocks & batches

Method	✓ / ✗	Purpose
`zks_getBlockDetails`	✓	Extra zkSync block info
`zks_getRawBlockTransactions`	✓	Raw txs in a block
`zks_getL1BatchBlockRange`	✗	Block range in batch
`zks_getL1BatchDetails`	✗	Batch details
`zks_L1BatchNumber`	✗	Latest L1 batch number

Proofs

Method	✓ / ✗	Purpose
`zks_getL2ToL1LogProof`	✓	Proof for L2→L1 log
`zks_getL2ToL1MsgProof`	✗	Proof for L1 Messenger msg
`zks_getProof`	✗	Storage Merkle proof

Accounts & tokens

Method	✓ / ✗	Purpose
`zks_getAllAccountBalances`	deprecated	All token balances
`zks_getConfirmedTokens`	deprecated	Token list slice
`zks_getBaseTokenL1Address`	✓	Base‑token L1 addr

Bridges & contracts

Method	✓ / ✗	Purpose
`zks_getBridgeContracts`	✓	Default bridge addrs
`zks_getBridgehubContract`	✓	Bridgehub addr
`zks_getMainContract`	✗	zkSync Era main contract
`zks_getTimestampAsserter`	✗	Timestamp asserter
`zks_getL2Multicall3`	✗	Multicall3 addr

Misc & system

Method	✓ / ✗	Purpose
`zks_L1ChainId`	✓	Underlying L1 chain‑id
`zks_getBatchFeeInput`	✗	Current batch fee input
`zks_getL1GasPrice`	✗	Current L1 gas price
`zks_sendRawTransactionWithDetailedOutput`	✗	Tx with trace output

Method reference

Full schemas live in the official zkSync JSON-RPC docs ↗︎.

zks_estimateFee

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{
        "jsonrpc":"2.0","id":1,"method":"zks_estimateFee",
        "params":[{
          "from":"0x…","to":"0x…","data":"0x…"
        }]
      }'

zks_estimateGasL1ToL2

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{
        "jsonrpc":"2.0","id":1,"method":"zks_estimateGasL1ToL2",
        "params":[{
          "from":"0x…","to":"0x…","gasPerPubdata":"0x0"
        }]
      }'

Deprecated zks_getAllAccountBalances

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{
        "jsonrpc":"2.0","id":1,"method":"zks_getAllAccountBalances",
        "params":["0x…account…"]
      }'

zks_getBridgeContracts

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getBridgeContracts","params":[]}'

zks_getBridgehubContract

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getBridgehubContract","params":[]}'

zks_getBlockDetails

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getBlockDetails","params":["0x1a"]}'

zks_getBytecodeByHash

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getBytecodeByHash","params":["0x…hash…"]}'

Deprecated zks_getConfirmedTokens

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getConfirmedTokens","params":[0, 50]}'

zks_getBaseTokenL1Address

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getBaseTokenL1Address","params":[]}'

zks_getL2ToL1LogProof

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{
        "jsonrpc":"2.0","id":1,"method":"zks_getL2ToL1LogProof",
        "params":["0x…txHash…", 0]
      }'

zks_getRawBlockTransactions

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getRawBlockTransactions","params":["0x1a"]}'

zks_getTransactionDetails

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_getTransactionDetails","params":["0x…txHash…"]}'

zks_L1ChainId

curl -s -X POST http://localhost:8011 \
  -H 'content-type: application/json' \
  -d '{"jsonrpc":"2.0","id":1,"method":"zks_L1ChainId","params":[]}'

Unimplemented stubs

The following methods are not yet implemented and will return Method not found:

zks_getBatchFeeInput
zks_getFeeParams
zks_getL1BatchBlockRange
zks_getL1BatchDetails
zks_getL1GasPrice
zks_getL2ToL1MsgProof
zks_getMainContract
zks_getProof
zks_getProtocolVersion
zks_getTestnetPaymaster
zks_sendRawTransactionWithDetailedOutput
zks_getTimestampAsserter
zks_getL2Multicall3

Anvil-ZKsync Documentation