{"name":"ENABLE_PROMPT_CACHING_1H_BEDROCK","slug":"enable-prompt-caching-1h-bedrock","family":"env","title":"Environment variables","noun":"environment variable","description":"When `1`, `true`, `yes` or `on` and the API provider is Bedrock, requests use a `1h` prompt cache TTL. It applies only when no earlier source decides the TTL: `FORCE_PROMPT_CACHING_5M`, the `CLAUDE_CODE_PROMPT_CACHE_TTL` or `CLAUDE_CODE_SUBAGENT_PROMPT_CACHE_TTL` env vars, the `promptCacheTtl` or `subagentPromptCacheTtl` settings, and an agent's frontmatter TTL all take precedence. `ENABLE_PROMPT_CACHING_1H` does the same for every provider.","description_source":"code","described_by":{"bundle":"2.1.286","author":"claude-opus-5-5"},"presence":{"first_seen":"2.1.138","removed_in":null,"in_current_build":true,"newest_mined":"2.1.308","builds":149,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[],"entries_total":0,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"ENABLE_PROMPT_CACHING_1H","slug":"enable-prompt-caching-1h","description":"You can pin the prompt cache to five minutes or an hour, separately for subagents."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/env\/enable-prompt-caching-1h-bedrock","family_url":"https:\/\/changelogs.core-directive.com\/reference\/env.json"}