aid: apollo-api-documentation
name: Apollo API Documentation
description: Apollo.io provides a comprehensive REST API for sales intelligence with over 210 million contacts and 35 million
  companies. The Apollo API enables data enrichment, people and organization search, CRM management, sequences, deals, analytics,
  and integrations. Authentication is via API keys or OAuth 2.0 for partner integrations. This repository profiles Apollo.io's
  API documentation as an example of API documentation best practices.
type: Index
position: Consumer
access: 3rd-Party
image: https://kinlane-productions.s3.amazonaws.com/apis-json/apis-json-logo.jpg
tags:
  - API Documentation
  - Best Practices
  - Data Enrichment
  - People Search
  - Sales Intelligence
created: '2025-07-10'
modified: '2026-05-19'
url: https://raw.githubusercontent.com/api-evangelist/apollo-api-documentation/refs/heads/main/apis.yml
specificationVersion: '0.19'
apis:
  - aid: apollo-api-documentation:apollo-rest-api
    name: Apollo REST API
    description: Apollo's REST API provides programmatic access to Apollo's sales intelligence database of 210M+ contacts and
      35M+ companies. The API supports people enrichment, organization enrichment, people search, accounts and contacts management,
      deals, sequences, tasks, analytics reporting, and calls management. Access is controlled by the customer's Apollo plan
      tier.
    humanURL: https://docs.apollo.io/
    tags:
    - Analytics
    - CRM
    - Data Enrichment
    - Organization Search
    - People Search
    - REST
    - Sales Intelligence
    - Sequences
    properties:
    - type: Documentation
      url: https://docs.apollo.io/
    - type: GettingStarted
      url: https://docs.apollo.io/docs
    - type: APIReference
      url: https://docs.apollo.io/reference
    - type: Authentication
      url: https://docs.apollo.io/reference/authentication
    - type: RateLimits
      url: https://docs.apollo.io/reference/rate-limits
    - type: Tutorials
      url: https://docs.apollo.io/docs/overview-apollo-api-tutorials
    - type: FAQ
      url: https://docs.apollo.io/docs/apollo-api-faqs
    - url: openapi/apollo-api-documentation-openapi.yml
      type: OpenAPI
    - type: NaftikoCapability
      url: capabilities/apollo-api-documentation.yaml
common:
  - type: GitHubOrganization
    url: https://github.com/apolloio
  - type: Documentation
    url: https://docs.apollo.io/
  - type: GettingStarted
    url: https://docs.apollo.io/docs
  - type: APIReference
    url: https://docs.apollo.io/reference
  - type: Authentication
    url: https://docs.apollo.io/reference/authentication
  - type: RateLimits
    url: https://docs.apollo.io/reference/rate-limits
  - type: Features
    data:
    - name: People Enrichment
      description: Enrich contact records with data from Apollo's 210M+ contact database.
    - name: Organization Enrichment
      description: Enrich company records with data from Apollo's 35M+ company database.
    - name: People Search
      description: Search Apollo's contact database to find and identify sales prospects.
    - name: Organization Search
      description: Search Apollo's company database for target accounts and job postings.
    - name: CRM Integration
      description: Manage accounts, contacts, deals, and sequences via the REST API.
    - name: OAuth 2.0 Partner Integration
      description: Partners use OAuth 2.0 to build integrations accessing Apollo data on behalf of customers.
    - name: Interactive Try It
      description: Interactive API testing capability built directly into the documentation.
    - name: Analytics Reporting
      description: Query analytics reports for performance metrics via the API.
  - type: UseCases
    data:
    - name: Sales Intelligence
      description: Access Apollo's contact and company database for prospecting and outreach.
    - name: Data Enrichment Pipelines
      description: Enrich CRM records with contact and organization data at scale.
    - name: Partner Integrations
      description: Build third-party integrations using OAuth 2.0 to access Apollo data for mutual customers.
    - name: Workflow Automation
      description: Automate sales workflows including sequences, tasks, and deal management.
  - type: Integrations
    data:
    - name: OAuth 2.0
      description: Partner integration protocol for accessing Apollo data on behalf of customers.
    - name: API Key Authentication
      description: Direct API key access for customers building internal integrations.
  - type: LLMsTxt
    url: https://docs.apollo.io/llms.txt
maintainers:
  - FN: Kin Lane
    email: info@apievangelist.com