# subagentcontext.com — the Context Management primitive > A durable, D1-backed catalog of real Claude context-management concepts: context windows, prompt caching, and context editing/compaction. Numeric token-limit specifics are deliberately phrased generally rather than fabricated. ## API - GET /api/context-concepts — list context-concept rows (category, description, how it works, source note) - GET /api/context-concepts/:id — a single concept row as JSON ## Family This site is one of the Cloudflare Workers in the subagent*.com family. For the live, machine-readable directory of every sibling domain, Cloudflare zone ID, and worker binding, fetch: https://subagentsubdomains.com/api/dns-zones For a unified catalog of every API route across every primitive in the family: https://subagentapi.com/api/catalog