Google Docs API: Integration Patterns, Authentication, and Pricing

Google Docs API offers three integration patterns: iframe embed, headless CMS, or full read/write. Free with 300 req/min quota. OAuth 2.0 auth, service accounts for server-to-server.

Three integration patterns for Google Docs on websites: 1. Simple iframe embedding: Embed a published Google Doc directly. No API needed, but limited customization and dependent on Google's rendering. 2. Google Docs as headless CMS: Use the Docs API to read document content, then render it with your own templates. Good for content that non-technical people manage. 3. Full programmatic read/write via the Docs API: Create, read, update documents programmatically. Supports structured content manipulation (insert text, tables, images at specific positions). Authentication: Uses OAuth 2.0. For server-to-server access (no user interaction), use a Service Account with domain-wide delegation in Google Workspace environments. Pricing: Google Docs API is free for reasonable usage. No per-request charges. Quotas apply: default 300 requests per minute per project, 60 per minute per user. Quota increases available through Google Cloud Console.

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