Skip to main content

JSON-RPC methods

Gear provides a set of JSON-RPC methods to interact with Gear pallets.

The JSON-RPC methods of other pallets used in the chain are also available and can be found in the Substrate JSON-RPC documentation.

Gear pallets​

Calculate gas for Init message (upload_program extrinsic)​

  • summary: The method allows to calculate gas for Init message (upload_program extrinsic)
  • method name: gear_calculateGasForUpload
  • structure: calculateGasForUpload(source: H256, code: Vec<u8>, payload: Vec<u8>, value: u128, allow_other_panics: bool): GasInfo
  • gear-js/api method: api.program.calculateGas.initUpload

Calculate gas for Init message (create_program extrinsic)​

  • summary: The method allows to calculate gas for Init message (create_program extrinsic)
  • method name: gear_calculateGasForCreate
  • structure: calculateGasForCreate(source: H256, codeId: H256, payload: Vec<u8>, value: u128, allow_other_panics: bool): GasInfo
  • gear-js/api method: api.program.calculateGas.initCreate

Calculate gas for Handle message (send_message extrinsic)​

  • summary: The method allows to calculate gas for Handle message (send_message extrinsic)
  • method name: gear_calculateGasForHandle
  • structure: calculateGasForHandle(source: H256, destination: H256, payload: Vec<u8>, value: u128, allow_other_panics: bool): GasInfo
  • gear-js/api method: api.program.calculateGas.handle

Calculate gas for Reply message (send_reply extrinsic)​

  • summary: The method allows to calculate gas for Reply message (send_reply extrinsic)
  • method name: gear_calculateGasForReply
  • structure: calculateGasForReply(source: H256, message_id: H256, payload: Vec<u8>, value: u128, allow_other_panics: bool): GasInfo
  • gear-js/api method: api.program.calculateGas.reply

Read the metahash of a program metadata​

  • summary: The method allows to read the metahash of a program metadata
  • method name: gear_readMetahash
  • structure: readMetahash(program_id: H256, at: Option<BlockHash>): H256
  • gear-js/api method: api.program.metaHash

Read the state of a program​

  • summary: The method allows to read the state of a program
  • method name: gear_readState
  • structure: readState(program_id: H256, payload: Vec<u8>, at: Option<BlockHash>): Bytes
  • gear-js/api method: api.program.readState

Сollect reply details​

  • summary: The method allows to run queue with the message to collect reply details: payload, value and reply code.
  • method name: gear_calculateReplyForHandle
  • structure: calculateReplyForHandle(origin: H256, destination: H256, payload: Vec<u8>, gas_limit: u64, value: u128, at: Option<BlockHash>): ReplyInfo
  • gear-js/api method: api.message.calculateReply