Polkadot

Polkadot Parachain API

The Parachain API from Polkadot — 7 operation(s) for parachain.

GitHub OpenAPI

Operations 7

POST /api/scan/parachain/info Get parachain details #
POST /api/scan/parachain/list List parachains and parathreads #
POST /api/scan/parachain/meta Get parachain metadata #
POST /api/scan/parachain/registerinfo Get parachain registration info #
POST /api/scan/parachain/statistics/list List relay parachain statistics #
POST /api/scan/parachain/statistics/overview Get relay parachain statistics overview #
POST /api/scan/parachain/statistics/timeseries Get relay parachain statistics timeseries #

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-parachain-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

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OpenAPI Specification

polkadot-parachain-api-openapi.yml Raw ↑ 
openapi: 3.2.0
info:
  contact:
    email: bruce.sun@itering.io
    name: API Support
    url: http://www.swagger.io/support
  description: This is a subscan API server.
  license:
    name: Apache 2.0
    url: http://www.apache.org/licenses/LICENSE-2.0.html
  termsOfService: http://swagger.io/terms/
  title: Subscan Parachain API
  version: '1.0'
servers:
- url: https://https://www.subscan.io/
tags:
- name: Parachain
paths:
  /api/scan/parachain/info:
    post:
      description: 'Returns detailed parachain information with optional parachain-status filters. Only available on relay chains: Polkadot, Kusama, Westend, and Paseo.'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      properties:
                        chains:
                          items:
                            $ref: '#/components/schemas/subscan_internal_model.ParachainInfoJson'
                          type: array
                        count:
                          type: integer
                      type: object
                  type: object
      summary: Get parachain details
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - scan
      - para chain
      - relaychain shard
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/internal_server_http.parachainInfoParams'
        description: params
        required: true
      operationId: postApiScanParachainInfo
      x-operation-id-source: derived
  /api/scan/parachain/list:
    post:
      description: 'Returns a paginated list of parachains and parathreads with status and basic metadata. Only available on relay chains: Polkadot, Kusama, Westend, and Paseo.'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      properties:
                        chains:
                          items:
                            $ref: '#/components/schemas/subscan_internal_model.ParaChainSample'
                          type: array
                        count:
                          type: integer
                      type: object
                  type: object
      summary: List parachains and parathreads
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - scan
      - para chain
      - relaychain shard
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/internal_server_http.paraChainListParams'
        description: params
        required: true
      operationId: postApiScanParachainList
      x-operation-id-source: derived
  /api/scan/parachain/meta:
    post:
      description: 'Returns aggregate metadata for all parachains on the current relay chain. Only available on relay chains: Polkadot, Kusama, Westend, and Paseo.'
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      $ref: '#/components/schemas/subscan_internal_model.ParaChainMetaJson'
                  type: object
      summary: Get parachain metadata
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - meta
      - scan
      - para chain
      - relaychain shard
      operationId: postApiScanParachainMeta
      x-operation-id-source: derived
  /api/scan/parachain/registerinfo:
    post:
      description: Returns the current relay-chain name and parachain registration mapping when parachain registration data is available.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      properties:
                        paraID:
                          additionalProperties:
                            type: string
                          type: object
                        relay_chain:
                          type: string
                      type: object
                  type: object
      summary: Get parachain registration info
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - register
      - scan
      - registerinfo
      - para chain
      - relaychain shard
      operationId: postApiScanParachainRegisterinfo
      x-operation-id-source: derived
  /api/scan/parachain/statistics/list:
    post:
      description: Returns one cached aggregate row per parachain network for relay-level dashboards.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      properties:
                        count:
                          type: integer
                        list:
                          items:
                            $ref: '#/components/schemas/subscan_internal_model.ParachainMetricNetworkStat'
                          type: array
                      type: object
                  type: object
      summary: List relay parachain statistics
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - statistics
      - relaychain
      - list
      - network
      - para id
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/internal_server_http.parachainMetricListParams'
        description: params
        required: true
      operationId: postApiScanParachainStatisticsList
      x-operation-id-source: derived
  /api/scan/parachain/statistics/overview:
    post:
      description: Returns cached aggregate extrinsic, transfer, TPS, and XCM counters for parachains under the current relay chain. Reads pre-aggregated rollups only and does not fan out to parachain APIs.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      properties:
                        total:
                          $ref: '#/components/schemas/subscan_internal_model.ParachainMetricTotal'
                        updated_at:
                          type: string
                      type: object
                  type: object
      summary: Get relay parachain statistics overview
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - statistics
      - relaychain
      - tps
      - extrinsic
      - transfer
      - xcm
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/internal_server_http.parachainMetricParams'
        description: params
        required: true
      operationId: postApiScanParachainStatisticsOverview
      x-operation-id-source: derived
  /api/scan/parachain/statistics/timeseries:
    post:
      description: Returns cached hourly or daily parachain metric rollups for chart rendering.
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                allOf:
                - $ref: '#/components/schemas/internal_server_http.J'
                - properties:
                    data:
                      properties:
                        series:
                          items:
                            $ref: '#/components/schemas/subscan_internal_model.ParachainMetricSeriesPoint'
                          type: array
                      type: object
                  type: object
      summary: Get relay parachain statistics timeseries
      tags:
      - Parachain
      x-synonyms:
      - parachain
      - statistics
      - relaychain
      - timeseries
      - chart
      - tps
      requestBody:
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/internal_server_http.parachainMetricParams'
        description: params
        required: true
      operationId: postApiScanParachainStatisticsTimeseries
      x-operation-id-source: derived
components:
  schemas:
    subscan_internal_model.ParachainInfoJson:
      properties:
        auction_index:
          type: integer
        begin_period:
          description: 周期开始时间(begin-first-end)
          type: integer
        bid_id:
          type: string
        deposit:
          type: string
        first_period:
          type: integer
        fund_account:
          type: string
        fund_account_display:
          $ref: '#/components/schemas/subscan_internal_model.AccountDisplay'
        fund_id:
          type: string
        genesis_head:
          type: string
        last_period:
          type: integer
        manager:
          type: string
        manager_display:
          $ref: '#/components/schemas/subscan_internal_model.AccountDisplay'
        open_channel_count:
          type: integer
        para_id:
          type: integer
        reserved_extrinsic_index:
          type: string
        source:
          type: integer
        status:
          type: string
        validation_code_url:
          type: string
        validators:
          items:
            type: string
          type: array
        validators_display:
          items:
            $ref: '#/components/schemas/subscan_internal_model.AccountDisplay'
          type: array
        xcm_receive_message_count:
          type: integer
        xcm_receive_transfer_count:
          type: integer
        xcm_send_message_count:
          type: integer
        xcm_send_transfer_count:
          type: integer
      type: object
    subscan_internal_model.AccountParentJson:
      properties:
        address:
          type: string
        display:
          type: string
        identity:
          type: boolean
        sub_symbol:
          type: string
      type: object
    internal_server_http.parachainInfoParams:
      properties:
        filter_anonymous:
          type: boolean
        order:
          type: string
        page:
          description: Page number, starting from 0
          example: 0
          minimum: 0
          type: integer
        para_id:
          type: integer
        row:
          description: Data size per page
          example: 10
          maximum: 100
          minimum: 1
          type: integer
        status:
          items:
            type: string
          type: array
      type: object
    internal_server_http.parachainMetricListParams:
      properties:
        end:
          example: '2026-05-20'
          type: string
        format:
          enum:
          - hour
          - day
          example: day
          type: string
        metrics:
          items:
            type: string
          type: array
        networks:
          items:
            type: string
          type: array
        order:
          enum:
          - asc
          - desc
          example: desc
          type: string
        order_field:
          example: extrinsic_count
          type: string
        page:
          example: 0
          minimum: 0
          type: integer
        para_ids:
          items:
            type: integer
          type: array
        relay_network:
          example: polkadot
          type: string
        row:
          example: 10
          maximum: 100
          minimum: 1
          type: integer
        start:
          example: '2026-05-01'
          type: string
      required:
      - end
      - start
      type: object
    internal_server_http.paraChainListParams:
      properties:
        filter_anonymous:
          type: boolean
        order:
          type: string
        page:
          description: Page number, starting from 0
          example: 0
          minimum: 0
          type: integer
        para_id:
          type: integer
        row:
          description: Data size per page
          example: 10
          maximum: 100
          minimum: 1
          type: integer
        status:
          items:
            type: string
          type: array
      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.ParachainMetricNetworkStat:
      properties:
        avg_tps:
          type: string
        extrinsic_count:
          type: integer
        network:
          type: string
        para_id:
          type: integer
        peak_tps:
          type: string
        relay_network:
          type: string
        transfer_count:
          type: integer
        updated_at:
          type: string
        xcm_receive_count:
          type: integer
        xcm_send_count:
          type: integer
      type: object
    subscan_internal_model.ParachainMetricSeriesPoint:
      properties:
        avg_tps:
          type: string
        bucket_format:
          type: string
        bucket_time:
          type: string
        extrinsic_count:
          type: integer
        network:
          type: string
        para_id:
          type: integer
        peak_tps:
          type: string
        relay_network:
          type: string
        transfer_count:
          type: integer
        updated_at:
          type: string
        xcm_receive_count:
          type: integer
        xcm_send_count:
          type: integer
      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: '#/components/schemas/subscan_internal_model.EvmAccountDisplay'
        identity:
          type: boolean
        judgements:
          items:
            $ref: '#/components/schemas/subscan_internal_model.RegistrationJudgementJson'
          type: array
        merkle:
          $ref: '#/components/schemas/subscan_internal_model.MerkleTag'
        parent:
          allOf:
          - $ref: '#/components/schemas/subscan_internal_model.AccountParentJson'
          description: Parent account
        people:
          $ref: '#/components/schemas/subscan_internal_model.SampleIdentity'
      type: object
    subscan_internal_model.ParachainMetricTotal:
      properties:
        avg_tps:
          type: string
        extrinsic_count:
          type: integer
        peak_tps:
          type: string
        transfer_count:
          type: integer
        updated_at:
          type: string
        xcm_receive_count:
          type: integer
        xcm_send_count:
          type: integer
      type: object
    subscan_internal_model.ParaChainMetaJson:
      properties:
        auction_active:
          type: boolean
        auction_count:
          type: integer
        ending_period:
          type: integer
        lease_offset:
          type: integer
        lease_period:
          type: integer
        lease_periods_per_slot:
          type: integer
        online_count:
          type: integer
        retirement_period:
          type: integer
        total_slot_num:
          type: integer
        upcoming_count:
          type: integer
      type: object
    subscan_internal_model.ParaChainSample:
      properties:
        begin_period:
          type: integer
        bid_id:
          type: string
        first_period:
          type: integer
        fund_id:
          type: string
        last_period:
          type: integer
        manager_display:
          $ref: '#/components/schemas/subscan_internal_model.AccountDisplay'
        open_channel_count:
          type: integer
        para_id:
          type: integer
        reserved_extrinsic_index:
          type: string
        status:
          type: string
        xcm_receive_message_count:
          type: integer
        xcm_receive_transfer_count:
          type: integer
        xcm_send_message_count:
          type: integer
        xcm_send_transfer_count:
          type: integer
      type: object
    internal_server_http.parachainMetricParams:
      properties:
        end:
          example: '2026-05-20'
          type: string
        format:
          enum:
          - hour
          - day
          example: day
          type: string
        metrics:
          items:
            type: string
          type: array
        networks:
          items:
            type: string
          type: array
        para_ids:
          items:
            type: integer
          type: array
        relay_network:
          example: polkadot
          type: string
        start:
          example: '2026-05-01'
          type: string
      required:
      - end
      - start
      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_internal_model.EvmAccountDisplay:
      properties:
        contract_name:
          type: string
        verify_source:
          type: string
      type: object
    subscan_internal_model.RegistrationJudgementJson:
      properties:
        index:
          type: integer
        judgement:
          type: string
      type: object
    subscan_internal_model.SampleIdentity:
      properties:
        display:
          type: string
        identity:
          type: boolean
        judgements:
          items:
            $ref: '#/components/schemas/subscan_internal_model.RegistrationJudgementJson'
          type: array
        parent:
          $ref: '#/components/schemas/subscan_internal_model.AccountParentJson'
      type: object