openapi: 3.0.3
info:
  title: Snov.io Authentication API
  description: 'Snov.io sales engagement REST API. Authentication uses the OAuth2 client_credentials grant to exchange an API User ID (client_id) and API Secret (client_secret) for a one-hour Bearer access token. Email finder, domain search, and email verification use an asynchronous pattern: a POST to a `/start` endpoint returns a `task_hash`, then a GET to the matching `/result` endpoint retrieves the outcome. Most request bodies are application/x-www-form-urlencoded; a few v2 endpoints accept JSON. The API is rate limited to 60 requests per minute.'
  termsOfService: https://snov.io/terms-and-conditions
  contact:
    name: Snov.io Support
    url: https://snov.io/api
  version: '1.0'
servers:
- url: https://api.snov.io
  description: Snov.io production API
security:
- OAuth2: []
tags:
- name: Authentication
paths:
  /v1/oauth/access_token:
    post:
      operationId: getAccessToken
      tags:
      - Authentication
      summary: Get an OAuth2 access token
      description: Exchanges client_id (API User ID) and client_secret (API Secret) for a Bearer access token using the client_credentials grant. The token is valid for 3600 seconds.
      security: []
      requestBody:
        required: true
        content:
          application/x-www-form-urlencoded:
            schema:
              type: object
              required:
              - grant_type
              - client_id
              - client_secret
              properties:
                grant_type:
                  type: string
                  enum:
                  - client_credentials
                client_id:
                  type: string
                client_secret:
                  type: string
      responses:
        '200':
          description: Access token issued.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AccessToken'
components:
  schemas:
    AccessToken:
      type: object
      properties:
        access_token:
          type: string
        token_type:
          type: string
          example: Bearer
        expires_in:
          type: integer
          example: 3600
  securitySchemes:
    OAuth2:
      type: oauth2
      description: OAuth2 client_credentials flow. POST client_id and client_secret to /v1/oauth/access_token to obtain a Bearer token, then send it in the Authorization header.
      flows:
        clientCredentials:
          tokenUrl: https://api.snov.io/v1/oauth/access_token
          scopes: {}