Polkadot

Polkadot Extrinsic API

The Extrinsic API from Polkadot — 6 operation(s) for extrinsic.

GitHub OpenAPI

Documentation

📖
Documentation
https://support.subscan.io/
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/rate-limits/subscan.yml
📖
Documentation
https://docs.polkadot.com/chain-interactions/query-data/query-rest/
📖
Documentation
https://github.com/paritytech/polkadot-rest-api

Specifications

⚙
OpenAPI
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/openapi/polkadot-extrinsic-api-openapi.yml

SDKs

📦
GitHubRepository
https://github.com/paritytech/substrate-api-sidecar
📦
GitHubRepository
https://github.com/paritytech/polkadot-rest-api

Other Resources

🔗
PostmanCollection
https://documenter.getpostman.com/view/1618960/TVCe1oRU
🔗
Plans
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/plans/subscan.yml
🔗
FinOps
https://raw.githubusercontent.com/api-evangelist/polkadot/refs/heads/main/finops/subscan.yml

OpenAPI Specification

polkadot-extrinsic-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Polkadot REST Account Extrinsic API
  description: High-performance Rust REST API for Substrate/Polkadot blockchain data. Drop-in replacement for substrate-api-sidecar.
  contact:
    url: https://github.com/paritytech/polkadot-rest-api
  license:
    name: GPL-3.0-or-later
  version: 0.1.3
servers:
- url: http://localhost:8080/v1
  description: Localhost
tags:
- name: Extrinsic
paths:
  /api/scan/extrinsic:
    post:
      description: Returns extrinsic details by extrinsic_index or hash, with optional event and parameter controls.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.ExtrinsicDetailParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  $ref: '#/definitions/subscan_internal_model.ExtrinsicDetail'
              type: object
      summary: Get extrinsic details
      tags:
      - Extrinsic
      x-synonyms:
      - extrinsic
      - scan
      - transaction
      - tx
      - on-chain call
  /api/scan/extrinsic/params:
    post:
      consumes:
      - application/json
      description: Returns parsed parameter payloads for up to 100 extrinsic indexes.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.extrinsicParamsParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  items:
                    $ref: '#/definitions/subscan_internal_model.ChainExtrinsicParams'
                  type: array
              type: object
      summary: Get extrinsic parameters
      tags:
      - Extrinsic
      x-synonyms:
      - extrinsic
      - parameters
      - scan
      - params
      - transaction
      - tx
      - on-chain call
  /api/scan/extrinsic/reward:
    post:
      consumes:
      - application/json
      description: 'Returns the reward records associated with one extrinsic index.

        This API only supports networks with staking frame or parachain-staking pallet'
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.extrinsicRewardParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  properties:
                    count:
                      type: integer
                    list:
                      items:
                        $ref: '#/definitions/subscan_internal_model.ExtrinsicRewardJson'
                      type: array
                  type: object
              type: object
      summary: List extrinsic reward records
      tags:
      - Extrinsic
      x-synonyms:
      - extrinsic
      - reward
      - scan
      - transaction
      - tx
      - on-chain call
  /api/scan/getRawTx:
    post:
      consumes:
      - application/json
      description: Returns the raw transaction hex for an extrinsic index or extrinsic hash.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.rawTxParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  type: string
              type: object
      summary: Get raw extrinsic transaction
      tags:
      - Extrinsic
      x-synonyms:
      - raw
      - extrinsic
      - transaction
      - scan
      - getrawtx
      - tx
      - on-chain call
  /api/scan/pendingExtrinsics:
    post:
      consumes:
      - application/json
      description: Returns currently pending extrinsics in the mempool.
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  properties:
                    extrinsics:
                      items:
                        $ref: '#/definitions/subscan_internal_model.ChainExtrinsicJson'
                      type: array
                  type: object
              type: object
      summary: List pending extrinsics
      tags:
      - Extrinsic
      x-synonyms:
      - pending
      - extrinsics
      - extrinsic
      - scan
      - pendingextrinsics
      - transaction
      - tx
      - on-chain call
  /api/v2/scan/extrinsics:
    post:
      consumes:
      - application/json
      description: Returns paginated extrinsics with module/call, signer, success, and block-range filters.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.extrinsicsParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  properties:
                    count:
                      type: integer
                    extrinsics:
                      items:
                        $ref: '#/definitions/subscan_internal_model.ChainExtrinsicV2Json'
                      type: array
                  type: object
              type: object
      summary: List extrinsics
      tags:
      - Extrinsic
      x-synonyms:
      - extrinsics
      - extrinsic
      - scan
      - transaction
      - tx
      - on-chain call
definitions:
  subscan_internal_model.AccountParentJson:
    properties:
      address:
        type: string
      display:
        type: string
      identity:
        type: boolean
      sub_symbol:
        type: string
    type: object
  subscan_internal_model.TransferJson:
    properties:
      amount:
        type: string
      asset_symbol:
        type: string
      from:
        type: string
      hash:
        type: string
      module:
        type: string
      success:
        type: boolean
      to:
        type: string
      to_account_display:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
    type: object
  subscan_internal_model.ExtrinsicSubCallJson:
    properties:
      account:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
      exec_result:
        $ref: '#/definitions/subscan_libs_substrate.MetadataModuleError'
      exec_status:
        type: string
      module:
        type: string
      multisig:
        $ref: '#/definitions/subscan_internal_model.MultisigJson'
      name:
        type: string
      param: {}
      sub_calls:
        items:
          $ref: '#/definitions/subscan_internal_model.ExtrinsicSubCallJson'
        type: array
    type: object
  subscan_internal_model.ExtrinsicDetail:
    properties:
      account_display:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
      account_id:
        type: string
      additional_meta:
        additionalProperties: true
        type: object
      asset_fee:
        $ref: '#/definitions/subscan_internal_model.ExtrinsicAssetFee'
      block_hash:
        type: string
      block_num:
        type: integer
      block_timestamp:
        type: integer
      call_module:
        type: string
      call_module_function:
        type: string
      error:
        $ref: '#/definitions/subscan_internal_model.ExtrinsicError'
      event:
        items:
          $ref: '#/definitions/subscan_internal_model.ChainEventJson'
        type: array
      event_count:
        type: integer
      extrinsic_hash:
        type: string
      extrinsic_index:
        type: string
      fee:
        type: string
      fee_used:
        type: string
      finalized:
        type: boolean
      lifetime:
        $ref: '#/definitions/subscan_internal_model.Lifetime'
      multisig:
        items:
          $ref: '#/definitions/subscan_internal_model.MultisigJson'
        type: array
      nonce:
        type: integer
      params:
        items:
          $ref: '#/definitions/subscan_internal_model.ExtrinsicParam'
        type: array
      pending:
        type: boolean
      signature:
        type: string
      sub_calls:
        items:
          $ref: '#/definitions/subscan_internal_model.ExtrinsicSubCallJson'
        type: array
      success:
        type: boolean
      tip:
        type: string
      transfer:
        $ref: '#/definitions/subscan_internal_model.TransferJson'
    type: object
  internal_server_http.moduleCallFilterParams:
    properties:
      call:
        type: string
      module:
        type: string
    type: object
  internal_server_http.J:
    properties:
      code:
        example: 0
        type: integer
      data: {}
      generated_at:
        example: 1699600641
        type: integer
      message:
        example: Success
        type: string
    type: object
  subscan_libs_substrate.MetadataModuleError:
    properties:
      doc:
        items:
          type: string
        type: array
      module:
        type: string
      name:
        type: string
      value:
        type: string
    type: object
  internal_server_http.extrinsicParamsParams:
    properties:
      extrinsic_index:
        items:
          type: string
        type: array
    required:
    - extrinsic_index
    type: object
  subscan_internal_model.AccountDisplay:
    properties:
      account_index:
        type: string
      address:
        description: Current network account
        type: string
      display:
        type: string
      evm_address:
        type: string
      evm_contract:
        $ref: '#/definitions/subscan_internal_model.EvmAccountDisplay'
      identity:
        type: boolean
      judgements:
        items:
          $ref: '#/definitions/subscan_internal_model.RegistrationJudgementJson'
        type: array
      merkle:
        $ref: '#/definitions/subscan_internal_model.MerkleTag'
      parent:
        allOf:
        - $ref: '#/definitions/subscan_internal_model.AccountParentJson'
        description: Parent account
      people:
        $ref: '#/definitions/subscan_internal_model.SampleIdentity'
    type: object
  subscan_internal_model.MerkleTag:
    properties:
      address_type:
        type: string
      tag_name:
        type: string
      tag_subtype:
        type: string
      tag_type:
        type: string
    type: object
  subscan_internal_model.ExtrinsicParam:
    properties:
      name:
        type: string
      type:
        type: string
      type_name:
        type: string
      value: {}
    type: object
  subscan_internal_model.SampleIdentity:
    properties:
      display:
        type: string
      identity:
        type: boolean
      judgements:
        items:
          $ref: '#/definitions/subscan_internal_model.RegistrationJudgementJson'
        type: array
      parent:
        $ref: '#/definitions/subscan_internal_model.AccountParentJson'
    type: object
  internal_server_http.extrinsicRewardParams:
    properties:
      extrinsic_index:
        type: string
      page:
        description: Page number, starting from 0
        example: 0
        minimum: 0
        type: integer
      row:
        description: Data size per page
        example: 10
        maximum: 100
        minimum: 1
        type: integer
    required:
    - extrinsic_index
    type: object
  subscan_internal_model.MultisigJson:
    properties:
      call_hash:
        type: string
      call_module:
        type: string
      call_module_function:
        type: string
      error:
        $ref: '#/definitions/subscan_internal_model.ExtrinsicError'
      extrinsic_index:
        type: string
      multi_id:
        type: string
      multisig_account_display:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
      multisig_status:
        $ref: '#/definitions/subscan_internal_model.MultiAction'
      processing:
        type: integer
      threshold:
        type: integer
    type: object
  internal_server_http.extrinsicsParams:
    properties:
      address:
        type: string
      after_id:
        type: integer
      block_num:
        minimum: 0
        type: integer
      block_range:
        type: string
      call:
        type: string
      module:
        type: string
      module_call:
        items:
          $ref: '#/definitions/internal_server_http.moduleCallFilterParams'
        type: array
      order:
        enum:
        - asc
        - desc
        type: string
      page:
        description: Page number, starting from 0
        example: 0
        minimum: 0
        type: integer
      row:
        description: Data size per page
        example: 10
        maximum: 100
        minimum: 1
        type: integer
      signed:
        type: string
      success:
        type: boolean
      timeout:
        type: integer
    type: object
  subscan_internal_model.EvmAccountDisplay:
    properties:
      contract_name:
        type: string
      verify_source:
        type: string
    type: object
  subscan_internal_model.ChainExtrinsicV2Json:
    properties:
      account_display:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
      additional_meta:
        additionalProperties: true
        type: object
      block_num:
        type: integer
      block_timestamp:
        type: integer
      call_module:
        type: string
      call_module_function:
        type: string
      extrinsic_hash:
        type: string
      extrinsic_index:
        type: string
      fee:
        type: string
      fee_used:
        type: string
      finalized:
        type: boolean
      id:
        type: integer
      nonce:
        type: integer
      success:
        type: boolean
      tip:
        type: string
    type: object
  subscan_internal_model.Lifetime:
    properties:
      birth:
        type: integer
      death:
        type: integer
    type: object
  internal_server_http.rawTxParams:
    properties:
      extrinsic_index:
        description: Optional, extrinsic index
        type: string
      hash:
        description: Optional, extrinsic hash
        type: string
    type: object
  subscan_internal_model.ExtrinsicAssetFee:
    properties:
      decimal:
        type: integer
      fee:
        type: string
      fee_used:
        type: string
      symbol:
        type: string
      token_unique_id:
        type: string
    type: object
  subscan_internal_model.ChainExtrinsicJson:
    properties:
      account_display:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
      account_id:
        type: string
      account_index:
        type: string
      block_num:
        type: integer
      block_timestamp:
        type: integer
      call_module:
        type: string
      call_module_function:
        type: string
      extrinsic_hash:
        type: string
      extrinsic_index:
        type: string
      fee:
        type: string
      fee_used:
        type: string
      finalized:
        type: boolean
      from_hex:
        type: string
      nonce:
        type: integer
      params:
        type: string
      signature:
        type: string
      success:
        type: boolean
    type: object
  subscan_internal_model.ChainExtrinsicParams:
    properties:
      extrinsic_index:
        type: string
      params:
        items:
          $ref: '#/definitions/subscan_internal_model.ExtrinsicParam'
        type: array
    type: object
  subscan_internal_model.MultiAction:
    enum:
    - Approval
    - Executed
    - Cancelled
    - Failed
    type: string
    x-enum-varnames:
    - MultiActionApproval
    - MultiActionExecuted
    - MultiActionCancelled
    - MultiActionExecuteFailed
  subscan_internal_model.ChainEventJson:
    properties:
      block_num:
        type: integer
      block_timestamp:
        type: integer
      event_id:
        type: string
      event_idx:
        type: integer
      event_index:
        type: string
      extrinsic_hash:
        type: string
      extrinsic_idx:
        type: integer
      finalized:
        type: boolean
      module_id:
        type: string
      params:
        type: string
      phase:
        type: integer
    type: object
  subscan_internal_model.ExtrinsicError:
    properties:
      batch_index:
        type: integer
      doc:
        type: string
      module:
        type: string
      name:
        type: string
      value:
        type: string
      version:
        type: integer
    type: object
  subscan_internal_model.RegistrationJudgementJson:
    properties:
      index:
        type: integer
      judgement:
        type: string
    type: object
  internal_server_http.ExtrinsicDetailParams:
    properties:
      events_limit:
        type: integer
      extrinsic_index:
        type: string
      hash:
        type: string
      hide_events:
        description: hide events in response
        type: boolean
    type: object
  subscan_internal_model.ExtrinsicRewardJson:
    properties:
      account:
        $ref: '#/definitions/subscan_internal_model.AccountDisplay'
      amount:
        type: string
    type: object