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  1. Blockchain RPC

Polkadot

Explore Polkadot, a scalable, interoperable blockchain platform powering a network of parachains and enabling next-generation decentralized applications.

Polkadot is a layer-0 protocol that connects multiple specialized blockchains (parachains) into a unified network, offering shared security and cross-chain communication. Built with Substrate and using a nominated proof-of-stake (NPoS) system, it enables seamless scalability and flexible governance. Ideal for deploying production-ready Web3 applications across interoperable chains.

– Related: 📚 Supported Blockchains • 🌐 RPC Nodes → Polkadot • 🔗 Official Polkadot Website

RPC Gateway for Polkadot blockchain

Polkadot RPC networks

▶️ Run in Postman 🚀 Get Started
↳ JSON-RPC
https://polkadot-mainnet.gateway.tatum.io
📋 Methods
↳ Substrate API
https://polkadot-mainnet.gateway.tatum.io/substrateapi
📋 Methods
↳ REST API
https://polkadot-mainnet.gateway.tatum.io/v1
📋 Methods
↳ JSON-RPC
https://polkadot-westend.gateway.tatum.io
📋 Methods
↳ REST API
https://polkadot-westend.gateway.tatum.io/v1
📋 Methods

Connect to Polkadot and Fetch the Latest Block

This widget lets you instantly query the latest block height (or equivalent) for Polkadot using a chain-specific RPC method like eth_blockNumber, getblockcount, or getBlockHeight. Useful for connectivity checks, uptime monitoring, or API testing.

Retrieve Polkadot Node Status or Client Version via RPC

Use this pre-configured request to get version or status information for your connected Polkadot node. Whether it's web3_clientVersion, getblockchaininfo, or chain-specific endpoints, the method is optimized for each supported blockchain.

Test Polkadot RPC Methods in Postman

Explore and test Polkadot blockchain methods instantly using our pre-configured Postman collection. Perfect for developers who want to experiment with Polkadot RPC endpoints, validate API responses, or integrate Polkadot into their applications.

How to use the Polkadot Postman Collection

  1. Get your API key: Visit Tatum Dashboard to obtain your free API key
  2. Import the collection: Click the "Run in Postman" button below to import the Polkadot collection
  3. Configure your environment: Update the gateway-api-key variable in the Tatum Gateway environment
  4. Start testing: Execute any Polkadot RPC method and see real-time responses
▶️ Run in Postman

Available Polkadot interfaces and methods

Each Polkadot network and interface below exposes its own set of RPC methods, listed live from Tatum's RPC Gateway. Query these endpoints for any interface to explore what it supports:

  • /_methods – machine-readable list of interfaces and methods
  • /llms.txt – human- and AI-readable documentation context
Polkadot Mainnet

JSON-RPC

Base URL: https://polkadot-mainnet.gateway.tatum.io

Discovery: /_methods · /llms.txt

  • author_pendingExtrinsics
  • author_removeExtrinsic
  • author_submitAndWatchExtrinsic
  • author_submitExtrinsic
  • beefy_getFinalizedHead
  • grandpa_proveFinality
  • grandpa_roundState
  • chain_getBlock
  • chain_getBlockHash
  • chain_getFinalizedHead
  • chain_getHead
  • chain_getHeader
  • childstate_getKeys
  • childstate_getKeysPaged
  • childstate_getStorage
  • childstate_getStorageEntries
  • childstate_getStorageHash
  • childstate_getStorageSize
  • mmr_generateProof
  • mmr_root
  • mmr_verifyProof
  • mmr_verifyProofStateless
  • payment_queryFeeDetails
  • payment_queryInfo
  • rpc_methods
  • state_call
  • state_getChildReadProof
  • state_getKeys
  • state_getKeysPaged
  • state_getMetadata
  • state_getReadProof
  • state_getRuntimeVersion
  • state_getStorage
  • state_getStorageHash
  • state_getStorageSize
  • state_queryStorageAt
  • sync_state_genSyncSpec
  • system_health
  • system_chain
  • system_chainType
  • system_name
  • system_nodeRoles
  • system_properties
  • system_syncState
  • system_version

Substrate API · REST

Base URL: https://polkadot-mainnet.gateway.tatum.io/substrateapi

Discovery: /_methods · /llms.txt

  • GET /accounts/{accountId}/asset-approvals
  • GET /accounts/{accountId}/asset-balances
  • GET /accounts/{accountId}/balance-info
  • GET /accounts/{accountId}/convert
  • GET /accounts/{accountId}/pool-asset-approvals
  • GET /accounts/{accountId}/pool-asset-balances
  • GET /accounts/{accountId}/proxy-info
  • GET /accounts/{accountId}/staking-info
  • GET /accounts/{accountId}/staking-payouts
  • GET /accounts/{accountId}/vesting-info
  • GET /accounts/{address}/validate
  • GET /accounts/compare
  • GET /blocks
  • GET /blocks/{blockId}
  • GET /blocks/{blockId}/extrinsics-raw
  • GET /blocks/{blockId}/extrinsics/{extrinsicIndex}
  • GET /blocks/{blockId}/header
  • GET /blocks/head
  • GET /blocks/head/header
  • GET /coretime/info
  • GET /coretime/leases
  • GET /coretime/overview
  • GET /coretime/regions
  • GET /coretime/renewals
  • GET /coretime/reservations
  • GET /node/network
  • GET /node/transaction-pool
  • GET /node/version
  • GET /pallets/{palletId}/consts
  • GET /pallets/{palletId}/consts/{constantItemId}
  • GET /pallets/{palletId}/dispatchables
  • GET /pallets/{palletId}/dispatchables/{dispatchableItemId}
  • GET /pallets/{palletId}/errors
  • GET /pallets/{palletId}/errors/{errorItemId}
  • GET /pallets/{palletId}/events
  • GET /pallets/{palletId}/events/{eventItemId}
  • GET /pallets/{palletId}/storage
  • GET /pallets/{palletId}/storage/{storageItemId}
  • GET /pallets/asset-conversion/liquidity-pools
  • GET /pallets/asset-conversion/next-available-id
  • GET /pallets/assets/{assetId}/asset-info
  • GET /pallets/foreign-assets
  • GET /pallets/nomination-pools/{poolId}
  • GET /pallets/nomination-pools/info
  • GET /pallets/on-going-referenda
  • GET /pallets/pool-assets/{assetId}/asset-info
  • GET /pallets/staking/progress
  • GET /pallets/staking/validators
  • GET /runtime/code
  • GET /runtime/metadata
  • GET /runtime/metadata/{metadataVersion}
  • GET /runtime/metadata/versions
  • GET /runtime/spec
  • GET /transaction/material
  • GET /transaction/material/{metadataVersion}
  • POST /contracts/ink/{address}/query
  • POST /transaction
  • POST /transaction/dry-run
  • POST /transaction/fee-estimate

REST API · REST

Base URL: https://polkadot-mainnet.gateway.tatum.io/v1

Discovery: /_methods · /llms.txt

  • GET /{accountId}/asset-balances
  • GET /accounts/{accountId}/asset-approvals
  • GET /accounts/{accountId}/balance-info
  • GET /accounts/{accountId}/convert
  • GET /accounts/{accountId}/foreign-asset-balances
  • GET /accounts/{accountId}/pool-asset-approvals
  • GET /accounts/{accountId}/pool-asset-balances
  • GET /accounts/{accountId}/proxy-info
  • GET /accounts/{accountId}/staking-info
  • GET /accounts/{accountId}/staking-payouts
  • GET /accounts/{accountId}/validate
  • GET /accounts/{accountId}/vesting-info
  • GET /accounts/compare
  • GET /ahm-info
  • GET /blocks
  • GET /blocks/{blockNumber}
  • GET /blocks/{blockNumber}/extrinsics-raw
  • GET /blocks/{blockNumber}/extrinsics/{extrinsicIndex}
  • GET /blocks/{blockNumber}/header
  • GET /blocks/{blockNumber}/para-inclusions
  • GET /blocks/head
  • GET /blocks/head/header
  • GET /capabilities
  • GET /coretime/info
  • GET /coretime/leases
  • GET /coretime/overview
  • GET /coretime/regions
  • GET /coretime/renewals
  • GET /coretime/reservations
  • GET /health
  • GET /node/network
  • GET /node/transaction-pool
  • GET /node/version
  • GET /pallets/{palletId}/consts
  • GET /pallets/{palletId}/consts/{constantItemId}
  • GET /pallets/{palletId}/dispatchables
  • GET /pallets/{palletId}/dispatchables/{dispatchableItemId}
  • GET /pallets/{palletId}/errors
  • GET /pallets/{palletId}/errors/{errorItemId}
  • GET /pallets/{palletId}/events
  • GET /pallets/{palletId}/events/{eventItemId}
  • GET /pallets/{palletId}/storage
  • GET /pallets/{palletId}/storage/{storageItemId}
  • GET /pallets/asset-conversion/liquidity-pools
  • GET /pallets/asset-conversion/next-available-id
  • GET /pallets/assets/{assetId}/asset-info
  • GET /pallets/foreign-assets
  • GET /pallets/nomination-pools/{poolId}
  • GET /pallets/nomination-pools/info
  • GET /pallets/on-going-referenda
  • GET /pallets/pool-assets/{assetId}/asset-info
  • GET /pallets/staking/progress
  • GET /pallets/staking/validators
  • GET /runtime/code
  • GET /runtime/metadata
  • GET /runtime/metadata/v14
  • GET /runtime/metadata/versions
  • GET /runtime/spec
  • GET /transaction/material
  • GET /transaction/material/v14
  • POST /transaction
  • POST /transaction/dry-run
  • POST /transaction/fee-estimate
  • POST /transaction/metadata-blob
  • POST /transaction/parse
Polkadot Westend

JSON-RPC

Base URL: https://polkadot-westend.gateway.tatum.io

Discovery: /_methods · /llms.txt

  • author_pendingExtrinsics
  • author_removeExtrinsic
  • author_submitAndWatchExtrinsic
  • author_submitExtrinsic
  • beefy_getFinalizedHead
  • grandpa_proveFinality
  • grandpa_roundState
  • chain_getBlock
  • chain_getBlockHash
  • chain_getFinalizedHead
  • chain_getHead
  • chain_getHeader
  • childstate_getKeys
  • childstate_getKeysPaged
  • childstate_getStorage
  • childstate_getStorageEntries
  • childstate_getStorageHash
  • childstate_getStorageSize
  • mmr_generateProof
  • mmr_root
  • mmr_verifyProof
  • mmr_verifyProofStateless
  • payment_queryFeeDetails
  • payment_queryInfo
  • rpc_methods
  • state_call
  • state_getChildReadProof
  • state_getKeys
  • state_getKeysPaged
  • state_getMetadata
  • state_getReadProof
  • state_getRuntimeVersion
  • state_getStorage
  • state_getStorageHash
  • state_getStorageSize
  • state_queryStorageAt
  • sync_state_genSyncSpec
  • system_health
  • system_chain
  • system_chainType
  • system_name
  • system_nodeRoles
  • system_properties
  • system_syncState
  • system_version

REST API · REST

Base URL: https://polkadot-westend.gateway.tatum.io/v1

Discovery: /_methods · /llms.txt

  • GET /{accountId}/asset-balances
  • GET /accounts/{accountId}/asset-approvals
  • GET /accounts/{accountId}/balance-info
  • GET /accounts/{accountId}/convert
  • GET /accounts/{accountId}/foreign-asset-balances
  • GET /accounts/{accountId}/pool-asset-approvals
  • GET /accounts/{accountId}/pool-asset-balances
  • GET /accounts/{accountId}/proxy-info
  • GET /accounts/{accountId}/staking-info
  • GET /accounts/{accountId}/staking-payouts
  • GET /accounts/{accountId}/validate
  • GET /accounts/{accountId}/vesting-info
  • GET /accounts/compare
  • GET /ahm-info
  • GET /blocks
  • GET /blocks/{blockNumber}
  • GET /blocks/{blockNumber}/extrinsics-raw
  • GET /blocks/{blockNumber}/extrinsics/{extrinsicIndex}
  • GET /blocks/{blockNumber}/header
  • GET /blocks/{blockNumber}/para-inclusions
  • GET /blocks/head
  • GET /blocks/head/header
  • GET /capabilities
  • GET /coretime/info
  • GET /coretime/leases
  • GET /coretime/overview
  • GET /coretime/regions
  • GET /coretime/renewals
  • GET /coretime/reservations
  • GET /health
  • GET /node/network
  • GET /node/transaction-pool
  • GET /node/version
  • GET /pallets/{palletId}/consts
  • GET /pallets/{palletId}/consts/{constantItemId}
  • GET /pallets/{palletId}/dispatchables
  • GET /pallets/{palletId}/dispatchables/{dispatchableItemId}
  • GET /pallets/{palletId}/errors
  • GET /pallets/{palletId}/errors/{errorItemId}
  • GET /pallets/{palletId}/events
  • GET /pallets/{palletId}/events/{eventItemId}
  • GET /pallets/{palletId}/storage
  • GET /pallets/{palletId}/storage/{storageItemId}
  • GET /pallets/asset-conversion/liquidity-pools
  • GET /pallets/asset-conversion/next-available-id
  • GET /pallets/assets/{assetId}/asset-info
  • GET /pallets/foreign-assets
  • GET /pallets/nomination-pools/{poolId}
  • GET /pallets/nomination-pools/info
  • GET /pallets/on-going-referenda
  • GET /pallets/pool-assets/{assetId}/asset-info
  • GET /pallets/staking/progress
  • GET /pallets/staking/validators
  • GET /runtime/code
  • GET /runtime/metadata
  • GET /runtime/metadata/v14
  • GET /runtime/metadata/versions
  • GET /runtime/spec
  • GET /transaction/material
  • GET /transaction/material/v14
  • POST /transaction
  • POST /transaction/dry-run
  • POST /transaction/fee-estimate
  • POST /transaction/metadata-blob
  • POST /transaction/parse

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Updated 3 days ago

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