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SUBMIT A PRSUBMIT AN ISSUElast edit: Apr 13, 2026

Runtime Calls

This page includes runtime API calls exposed by the Bittensor (Subtensor) runtime. Accessible via api.call.<RuntimeApi>.<method_name>.

info

Generated from a live snapshot of the Subtensor runtime on 2026-04-13. Connected to: wss://entrypoint-finney.opentensor.ai:443

accountNonceApi​

accountNonce(accountId: AccountId): Index​

  • interface: api.call.accountNonceApi.accountNonce

auraApi​

authorities(): Vec<AuthorityId>​

  • interface: api.call.auraApi.authorities

slotDuration(): SlotDuration​

  • interface: api.call.auraApi.slotDuration

babeApi​

configuration(): BabeGenesisConfiguration​

  • interface: api.call.babeApi.configuration

currentEpoch(): Epoch​

  • interface: api.call.babeApi.currentEpoch

currentEpochStart(): Slot​

  • interface: api.call.babeApi.currentEpochStart

generateKeyOwnershipProof(slot: Slot, authorityId: AuthorityId): Option<OpaqueKeyOwnershipProof>​

  • interface: api.call.babeApi.generateKeyOwnershipProof

nextEpoch(): Epoch​

  • interface: api.call.babeApi.nextEpoch

submitReportEquivocationUnsignedExtrinsic(equivocationProof: BabeEquivocationProof, keyOwnerProof: OpaqueKeyOwnershipProof): Option<Null>​

  • interface: api.call.babeApi.submitReportEquivocationUnsignedExtrinsic

blockBuilder​

applyExtrinsic(extrinsic: Extrinsic): ApplyExtrinsicResult​

  • interface: api.call.blockBuilder.applyExtrinsic

checkInherents(block: Block, data: InherentData): CheckInherentsResult​

  • interface: api.call.blockBuilder.checkInherents

finalizeBlock(): Header​

  • interface: api.call.blockBuilder.finalizeBlock

inherentExtrinsics(inherent: InherentData): Vec<Extrinsic>​

  • interface: api.call.blockBuilder.inherentExtrinsics

contractsApi​

call(origin: AccountId, dest: AccountId, value: Balance, gasLimit: Option<WeightV2>, storageDepositLimit: Option<Balance>, inputData: Vec<u8>): ContractExecResult​

  • interface: api.call.contractsApi.call

getStorage(address: AccountId, key: Bytes): Option<Bytes>​

  • interface: api.call.contractsApi.getStorage

instantiate(origin: AccountId, value: Balance, gasLimit: Option<WeightV2>, storageDepositLimit: Option<Balance>, code: CodeSource, data: Bytes, salt: Bytes): ContractInstantiateResult​

  • interface: api.call.contractsApi.instantiate

uploadCode(origin: AccountId, code: Bytes, storageDepositLimit: Option<Balance>): CodeUploadResult​

  • interface: api.call.contractsApi.uploadCode

convertTransactionRuntimeApi​

convertTransaction(transaction: TransactionV2): Extrinsic​

  • interface: api.call.convertTransactionRuntimeApi.convertTransaction

core​

executeBlock(block: Block): Null​

  • interface: api.call.core.executeBlock

initializeBlock(header: Header): ExtrinsicInclusionMode​

  • interface: api.call.core.initializeBlock

version(): RuntimeVersion​

  • interface: api.call.core.version

genesisBuilder​

buildConfig(json: Vec<u8>): Result<(), GenesisBuildErr>​

  • interface: api.call.genesisBuilder.buildConfig

createDefaultConfig(): Vec<u8>​

  • interface: api.call.genesisBuilder.createDefaultConfig

grandpaApi​

currentSetId(): SetId​

  • interface: api.call.grandpaApi.currentSetId

generateKeyOwnershipProof(setId: SetId, authorityId: AuthorityId): Option<OpaqueKeyOwnershipProof>​

  • interface: api.call.grandpaApi.generateKeyOwnershipProof

grandpaAuthorities(): AuthorityList​

  • interface: api.call.grandpaApi.grandpaAuthorities

submitReportEquivocationUnsignedExtrinsic(equivocationProof: GrandpaEquivocationProof, keyOwnerProof: OpaqueKeyOwnershipProof): Option<Null>​

  • interface: api.call.grandpaApi.submitReportEquivocationUnsignedExtrinsic

metadata​

metadata(): OpaqueMetadata​

  • interface: api.call.metadata.metadata

metadataAtVersion(version: u32): Option<OpaqueMetadata>​

  • interface: api.call.metadata.metadataAtVersion

metadataVersions(): Vec<u32>​

  • interface: api.call.metadata.metadataVersions

offchainWorkerApi​

offchainWorker(header: Header): Null​

  • interface: api.call.offchainWorkerApi.offchainWorker

sessionKeys​

decodeSessionKeys(encoded: Bytes): Option<Vec<(Bytes, KeyTypeId)>>​

  • interface: api.call.sessionKeys.decodeSessionKeys

generateSessionKeys(seed: Option<Bytes>): Bytes​

  • interface: api.call.sessionKeys.generateSessionKeys

taggedTransactionQueue​

validateTransaction(source: TransactionSource, tx: Extrinsic, blockHash: BlockHash): TransactionValidity​

  • interface: api.call.taggedTransactionQueue.validateTransaction

transactionPaymentApi​

queryFeeDetails(uxt: Extrinsic, len: u32): FeeDetails​

  • interface: api.call.transactionPaymentApi.queryFeeDetails

queryInfo(uxt: Extrinsic, len: u32): RuntimeDispatchInfo​

  • interface: api.call.transactionPaymentApi.queryInfo

queryLengthToFee(length: u32): Balance​

  • interface: api.call.transactionPaymentApi.queryLengthToFee

queryWeightToFee(weight: Weight): Balance​

  • interface: api.call.transactionPaymentApi.queryWeightToFee

transactionPaymentCallApi​

queryCallFeeDetails(call: Call, len: u32): FeeDetails​

  • interface: api.call.transactionPaymentCallApi.queryCallFeeDetails

queryCallInfo(call: Call, len: u32): RuntimeDispatchInfo​

  • interface: api.call.transactionPaymentCallApi.queryCallInfo

queryLengthToFee(length: u32): Balance​

  • interface: api.call.transactionPaymentCallApi.queryLengthToFee

queryWeightToFee(weight: Weight): Balance​

  • interface: api.call.transactionPaymentCallApi.queryWeightToFee