Why Cosmic Uses REST (and Why That's the Right Call in 2026)

Short summary

REST remains the better default for most content APIs in 2026, especially with AI agents now consuming APIs alongside human clients. Unlike GraphQL, REST is simpler for agents to construct requests, benefits from standard HTTP CDN caching, and integrates naturally with LLM provider SDKs like Model Context Protocol. GraphQL excels for complex, client-driven data needs, but most content APIs don't require that complexity.

• •REST is simpler for AI agents to consume — no schema introspection or query syntax required
• •REST benefits from CDN caching while GraphQL's POST-by-default pattern bypasses it
• •GraphQL remains the right choice for complex, client-driven data fetching with mature frontend infrastructure

Generated with AI, which can make mistakes.