Intercom

Intercom REST API v2.14 provides comprehensive customer messaging and engagement capabilities with regional endpoints (US, EU, Australia).

Authentication via OAuth 2.0 for public apps or Access Tokens for private apps with Bearer token authorization.

API covers 150+ endpoints including contacts, visitors, companies, conversations, messages, articles, data attributes, teams, admins, tags, segments, and counts extensively.

Canvas Kit framework for Messenger and Inbox apps. Cursor-based pagination with scroll API for large datasets. Webhooks for real-time event notifications. OpenAPI specification available. Developer Hub for app configuration and OAuth setup.

Rate limits enforced. Ideal for building customer support tools, live chat integrations, messaging automation, help center management, and custom CRM workflows with 25,000+ customers using the platform.