Basescan

Basescan Logs API

The Logs API from Basescan — 3 operation(s) for logs.

GitHub OpenAPI

Documentation

📖
Documentation
https://docs.basescan.org
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/rate-limits/rate-limits.yml

Specifications

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

Other Resources

🔗
Plans
https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/plans/plans.yml
🔗
FinOps
https://raw.githubusercontent.com/api-evangelist/basescan/refs/heads/main/finops/finops.yml
🔗
Signup
https://basescan.org/register
🔗
Login
https://basescan.org/login
🔗
Keys
https://basescan.org/myapikey
🔗
StatusPage
https://etherscan.freshstatus.io
🔗
FAQ
https://info.basescan.org

OpenAPI Specification

basescan-logs-api-openapi.yml Raw ↑ 
openapi: 3.1.0
info:
  title: Basescan Accounts Logs API
  version: 1.0.0
  description: Basescan is the leading blockchain explorer, search, API and analytics platform for Base (L2), an Ethereum Layer 2 network. Powered by the Etherscan team and compatible with the unified Etherscan API V2 platform using chain ID 8453 for Base network access.
  license:
    name: UNLICENSED
    url: https://docs.basescan.org/
servers:
- url: https://api.basescan.org/api
  description: Base Mainnet Endpoint
- url: https://api-sepolia.basescan.org/api
  description: Base Sepolia Testnet Endpoint
security:
- apiKeyAuth: []
tags:
- name: Logs
paths:
  /?module=logs&action=getLogs:
    get:
      operationId: get-event-logs-by-address
      externalDocs:
        url: https://docs.etherscan.io/api-endpoints/logs#get-event-logs-by-address
      summary: Get Event Logs by Address
      description: Returns the event logs from an address, with optional filtering by block range.
      tags:
      - Logs
      parameters:
      - in: query
        name: address
        schema:
          $ref: '#/components/schemas/AddressHash'
        required: true
        example: '0xbd3531da5cf5857e7cfaa92426877b022e612cf8'
      - in: query
        name: fromBlock
        schema:
          $ref: '#/components/schemas/IntegerMin0'
        required: true
        example: '12878196'
      - in: query
        name: toBlock
        schema:
          $ref: '#/components/schemas/IntegerMin0'
        required: true
        example: '12878196'
      - in: query
        name: page
        schema:
          $ref: '#/components/schemas/IntegerMin1'
        required: false
        example: '1'
      - in: query
        name: offset
        schema:
          $ref: '#/components/schemas/IntegerMin1Max1000'
        required: false
        example: '1000'
      responses:
        '200':
          description: Operation result.
          content:
            application/json:
              schema:
                oneOf:
                - allOf:
                  - $ref: '#/components/schemas/ResponseOK'
                  - $ref: '#/components/schemas/ResultArrayOfObjects'
                - $ref: '#/components/schemas/ResponseNOTOK'
              example:
                status: '1'
                message: OK
                result:
                - address: '0xbd3531da5cf5857e7cfaa92426877b022e612cf8'
                  topics:
                  - '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
                  - '0x0000000000000000000000000000000000000000000000000000000000000000'
                  - '0x000000000000000000000000c45a4b3b698f21f88687548e7f5a80df8b99d93d'
                  - '0x00000000000000000000000000000000000000000000000000000000000000b5'
                  data: 0x
                  blockNumber: '0xc48174'
                  timeStamp: '0x60f9ce56'
                  gasPrice: '0x2e90edd000'
                  gasUsed: '0x247205'
                  logIndex: 0x
                  transactionHash: '0x4ffd22d986913d33927a392fe4319bcd2b62f3afe1c15a2c59f77fc2cc4c20a9'
                  transactionIndex: 0x
                - address: '0xbd3531da5cf5857e7cfaa92426877b022e612cf8'
                  topics:
                  - '0x645f26e653c951cec836533f8fe0616d301c20a17153debc17d7c3dbe4f32b28'
                  - '0x00000000000000000000000000000000000000000000000000000000000000b5'
                  data: 0x
                  blockNumber: '0xc48174'
                  timeStamp: '0x60f9ce56'
                  gasPrice: '0x2e90edd000'
                  gasUsed: '0x247205'
                  logIndex: '0x1'
                  transactionHash: '0x4ffd22d986913d33927a392fe4319bcd2b62f3afe1c15a2c59f77fc2cc4c20a9'
                  transactionIndex: 0x
  /?module=logs&action=getLogs&get-event-logs-by-topics:
    get:
      operationId: get-event-logs-by-topics
      externalDocs:
        url: https://docs.etherscan.io/api-endpoints/logs#get-event-logs-by-topics
      summary: Get Event Logs by Topics
      description: Returns the events log in a block range, filtered by topics.
      tags:
      - Logs
      parameters:
      - in: query
        name: fromBlock
        schema:
          $ref: '#/components/schemas/IntegerMin0'
        required: true
        example: '12878196'
      - in: query
        name: toBlock
        schema:
          $ref: '#/components/schemas/IntegerMin0'
        required: true
        example: '12879196'
      - in: query
        name: topic
        schema:
          $ref: '#/components/schemas/Topic'
        required: true
        example: ''
      - in: query
        name: topicOperator
        schema:
          $ref: '#/components/schemas/TopicOperator'
        required: false
        example: ''
      - in: query
        name: page
        schema:
          $ref: '#/components/schemas/IntegerMin1'
        required: false
        example: '1'
      - in: query
        name: offset
        schema:
          $ref: '#/components/schemas/IntegerMin1Max1000'
        required: false
        example: '1000'
      responses:
        '200':
          description: Operation result.
          content:
            application/json:
              schema:
                oneOf:
                - allOf:
                  - $ref: '#/components/schemas/ResponseOK'
                  - $ref: '#/components/schemas/ResultArrayOfObjects'
                - $ref: '#/components/schemas/ResponseNOTOK'
              example:
                status: '1'
                message: OK
                result:
                - address: '0xbd3531da5cf5857e7cfaa92426877b022e612cf8'
                  topics:
                  - '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
                  - '0x0000000000000000000000000000000000000000000000000000000000000000'
                  - '0x000000000000000000000000c45a4b3b698f21f88687548e7f5a80df8b99d93d'
                  - '0x00000000000000000000000000000000000000000000000000000000000000b5'
                  data: 0x
                  blockNumber: '0xc48174'
                  timeStamp: '0x60f9ce56'
                  gasPrice: '0x2e90edd000'
                  gasUsed: '0x247205'
                  logIndex: 0x
                  transactionHash: '0x4ffd22d986913d33927a392fe4319bcd2b62f3afe1c15a2c59f77fc2cc4c20a9'
                  transactionIndex: 0x
                - address: '0xbd3531da5cf5857e7cfaa92426877b022e612cf8'
                  topics:
                  - '0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef'
                  - '0x0000000000000000000000000000000000000000000000000000000000000000'
                  - '0x000000000000000000000000c45a4b3b698f21f88687548e7f5a80df8b99d93d'
                  - '0x00000000000000000000000000000000000000000000000000000000000000b6'
                  data: 0x
                  blockNumber: '0xc48174'
                  timeStamp: '0x60f9ce56'
                  gasPrice: '0x2e90edd000'
                  gasUsed: '0x247205'
                  logIndex: '0x2'
                  transactionHash: '0x4ffd22d986913d33927a392fe4319bcd2b62f3afe1c15a2c59f77fc2cc4c20a9'
                  transactionIndex: 0x
  /?module=logs&action=getLogs&get-event-logs-by-address-filtered-by-topics:
    get:
      operationId: get-event-logs-by-address-filtered-by-topics
      externalDocs:
        url: https://docs.etherscan.io/api-endpoints/logs#get-event-logs-by-address-filtered-by-topics
      summary: Get Event Logs by Address filtered by Topics
      description: Returns the event logs from an address, filtered by topics and block range.
      tags:
      - Logs
      parameters:
      - in: query
        name: fromBlock
        schema:
          $ref: '#/components/schemas/IntegerMin0'
        required: true
        example: '15073139'
      - in: query
        name: toBlock
        schema:
          $ref: '#/components/schemas/IntegerMin0'
        required: true
        example: '15074139'
      - in: query
        name: address
        schema:
          $ref: '#/components/schemas/AddressHash'
        required: true
        example: '0x59728544b08ab483533076417fbbb2fd0b17ce3a'
      - in: query
        name: topic
        schema:
          $ref: '#/components/schemas/Topic'
        required: true
        example: ''
      - in: query
        name: topicOperator
        schema:
          $ref: '#/components/schemas/TopicOperator'
        required: false
        example: ''
      - in: query
        name: page
        schema:
          $ref: '#/components/schemas/IntegerMin1'
        required: false
        example: '1'
      - in: query
        name: offset
        schema:
          $ref: '#/components/schemas/IntegerMin1Max1000'
        required: false
        example: '1000'
      responses:
        '200':
          description: Operation result.
          content:
            application/json:
              schema:
                oneOf:
                - allOf:
                  - $ref: '#/components/schemas/ResponseOK'
                  - $ref: '#/components/schemas/ResultArrayOfObjects'
                - $ref: '#/components/schemas/ResponseNOTOK'
              example:
                status: '1'
                message: OK
                result:
                - address: '0x59728544b08ab483533076417fbbb2fd0b17ce3a'
                  topics:
                  - '0x27c4f0403323142b599832f26acd21c74a9e5b809f2215726e244a4ac588cd7d'
                  - '0x00000000000000000000000023581767a106ae21c074b2276d25e5c3e136a68b'
                  - '0x000000000000000000000000000000000000000000000000000000000000236d'
                  - '0x000000000000000000000000c8a5592031f93debea5d9e67a396944ee01bb2ca'
                  data: '0x000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000000000000000000000000000000f207539952d0000'
                  blockNumber: '0xe60262'
                  timeStamp: '0x62c26caf'
                  gasPrice: '0x5e2d742c9'
                  gasUsed: '0xfb7f8'
                  logIndex: '0x4b'
                  transactionHash: '0x26fe1a0a403fd44ef11ee72f3b4ceff590b6ea533684cb279cb4242be463304c'
                  transactionIndex: '0x39'
                - address: '0x59728544b08ab483533076417fbbb2fd0b17ce3a'
                  topics:
                  - '0x27c4f0403323142b599832f26acd21c74a9e5b809f2215726e244a4ac588cd7d'
                  - '0x00000000000000000000000023581767a106ae21c074b2276d25e5c3e136a68b'
                  - '0x0000000000000000000000000000000000000000000000000000000000002261'
                  - '0x000000000000000000000000c8a5592031f93debea5d9e67a396944ee01bb2ca'
                  data: '0x000000000000000000000000c02aaa39b223fe8d0a0e5c4f27ead9083c756cc20000000000000000000000000000000000000000000000000de0b6b3a7640000'
                  blockNumber: '0xe6035b'
                  timeStamp: '0x62c27ab1'
                  gasPrice: '0x27e523173'
                  gasUsed: '0x3b86e'
                  logIndex: '0x1d7'
                  transactionHash: '0x3a299413cf2c91e376e542efcf3fc308c562da79af6e992401217cc6208c7f74'
                  transactionIndex: '0x92'
components:
  schemas:
    IntegerMin0:
      type: integer
      minimum: 0
    IntegerMin1Max1000:
      type: integer
      format: int32
      minimum: 1
      maximum: 1000
    ResultArrayOfObjects:
      type: object
      properties:
        result:
          $ref: '#/components/schemas/ArrayOfObjects'
    AddressHash:
      type: string
      pattern: 0x[A-Fa-f0-9]{40}
      example: '0x01234567890abcdef01234567890abcdef012345'
    ArrayOfObjects:
      type: array
      items:
        type: object
        additionalProperties: true
    TopicOperator:
      type: string
      enum:
      - and
      - or
    ResponseOK:
      type: object
      properties:
        status:
          type: string
          enum:
          - '1'
        message:
          type: string
          enum:
          - OK
        result:
          description: call result
      required:
      - status
      - message
      - result
    Topic:
      type: string
      enum:
      - topic0
      - topic1
      - topic2
      - topic3
    IntegerMin1:
      type: integer
      minimum: 1
    ResponseNOTOK:
      type: object
      properties:
        status:
          type: string
          enum:
          - '0'
        message:
          type: string
          pattern: ^NOTOK(-.*)?$
          examples:
          - NOTOK
          - NOTOK-Missing/Invalid API Key, rate limit of 1/5sec applied
        result:
          type: string
      required:
      - status
      - message
      - result
  securitySchemes:
    apiKeyAuth:
      type: apiKey
      in: query
      name: apikey
externalDocs:
  url: https://docs.basescan.org/