Polkadot

Polkadot Event API

The Event API from Polkadot — 3 operation(s) for event.

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OpenAPI Specification

openapi: 3.1.0
info:
  title: Polkadot REST Account Event 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: Event
paths:
  /api/scan/event:
    post:
      consumes:
      - application/json
      description: Returns event details for a specific event index.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.eventInfoParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  $ref: '#/definitions/subscan_internal_model.ChainEvent'
              type: object
      summary: Get event by index
      tags:
      - Event
      x-synonyms:
      - event
      - index
      - scan
      - log
      - on-chain event
  /api/scan/event/params:
    post:
      consumes:
      - application/json
      description: Returns parsed parameter payloads for up to 100 event indexes.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.eventParamsParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  items:
                    $ref: '#/definitions/subscan_internal_model.ChainEventParams'
                  type: array
              type: object
      summary: Get event parameters by index
      tags:
      - Event
      x-synonyms:
      - event
      - parameters
      - index
      - scan
      - params
      - log
      - on-chain event
  /api/v2/scan/events:
    post:
      consumes:
      - application/json
      description: Returns paginated events with module/event filters, block constraints, and optional address matching.
      parameters:
      - description: params
        in: body
        name: params
        required: true
        schema:
          $ref: '#/definitions/internal_server_http.eventsParams'
      produces:
      - application/json
      responses:
        '200':
          description: OK
          schema:
            allOf:
            - $ref: '#/definitions/internal_server_http.J'
            - properties:
                data:
                  properties:
                    count:
                      type: integer
                    events:
                      items:
                        $ref: '#/definitions/subscan_internal_model.ChainEventV2Json'
                      type: array
                  type: object
              type: object
      summary: List events
      tags:
      - Event
      x-synonyms:
      - events
      - event
      - scan
      - logs
      - on-chain events
      - log
      - on-chain event
definitions:
  subscan_internal_model.EventParam:
    properties:
      name:
        type: string
      raw_value:
        items:
          type: integer
        type: array
      type:
        type: string
      type_name:
        type: string
      value: {}
    type: object
  subscan_internal_model.ChainEventParams:
    properties:
      event_index:
        type: string
      params:
        items:
          $ref: '#/definitions/subscan_internal_model.EventParam'
        type: array
      params_decode: {}
    type: object
  subscan_internal_model.ChainEvent:
    properties:
      block_num:
        type: integer
      es_params:
        items:
          type: string
        type: array
      event_id:
        type: string
      event_idx:
        type: integer
      event_index:
        type: string
      extrinsic_hash:
        type: string
      extrinsic_idx:
        type: integer
      extrinsic_module:
        type: string
      finalized:
        type: boolean
      id:
        type: integer
      module_id:
        type: string
      params:
        items:
          $ref: '#/definitions/subscan_internal_model.EventParam'
        type: array
      params_raw:
        type: string
      phase:
        type: integer
    type: object
  internal_server_http.eventsParams:
    properties:
      address:
        type: string
      after_id:
        type: integer
      block_num:
        minimum: 0
        type: integer
      block_range:
        type: string
      event_id:
        type: string
      extrinsic_index:
        type: string
      finalized:
        type: boolean
      focus:
        type: string
      module:
        type: string
      module_event:
        items:
          $ref: '#/definitions/internal_server_http.moduleEventFilterParams'
        type: array
      order:
        enum:
        - asc
        - desc
        type: string
      page:
        description: Page number, starting from 0
        example: 0
        minimum: 0
        type: integer
      phase:
        enum:
        - 0
        - 1
        - 2
        type: integer
      row:
        description: Data size per page
        example: 10
        maximum: 100
        minimum: 1
        type: integer
    type: object
  internal_server_http.eventParamsParams:
    properties:
      event_index:
        items:
          type: string
        type: array
    required:
    - event_index
    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
  internal_server_http.moduleEventFilterParams:
    properties:
      event_id:
        type: string
      module:
        type: string
    type: object
  internal_server_http.eventInfoParams:
    properties:
      event_index:
        type: string
    required:
    - event_index
    type: object
  subscan_internal_model.ChainEventV2Json:
    properties:
      block_timestamp:
        type: integer
      event_id:
        type: string
      event_index:
        type: string
      extrinsic_hash:
        type: string
      extrinsic_index:
        type: string
      finalized:
        type: boolean
      id:
        type: integer
      module_id:
        type: string
      phase:
        type: integer
    type: object

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