{"name":"tengu_carved_slate","slug":"tengu-carved-slate","family":"flag","title":"Feature flags","noun":"feature flag","description":"Claude Code now only re-sends changed CLAUDE.md\/instruction files instead of the whole block each turn, saving tokens.","description_source":"entry","described_by":{"version":"2.1.252","anchor":"incremental-claudemd-tool-description-context-diffing-i"},"presence":{"first_seen":"2.1.251","removed_in":"2.1.268","in_current_build":false,"newest_mined":"2.1.280","builds":11,"mined_builds":123,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.265","anchor":"static-system-prompt-mode-tengu-carved-slate-strips-dynami","heading":"Static system prompt mode (tengu_carved_slate) strips dynamic content from agent prompts when on","line":"A new staticSystemPromptEnabled flag can strip dynamic content from agent system prompts","released_at":"2026-09-08 19:05:16","reason":"gate cited by this entry, found in this entry's text"},{"version":"2.1.252","anchor":"incremental-claudemd-tool-description-context-diffing-i","heading":"Incremental CLAUDE.md \/ tool-description context diffing ('instructions' attachments)","line":"Claude Code now only re-sends changed CLAUDE.md\/instruction files instead of the whole block each turn, saving tokens.","released_at":"2026-08-31 17:07:28","reason":"gate cited by this entry"},{"version":"2.1.252","anchor":"new-instructionfiles-context-channel-gated-behind-carved","heading":"New \"instructionFiles\" context channel, gated behind carved-slate flag","line":"A separate instruction-files context channel exists but is off by default, part of a static system prompt rework.","released_at":"2026-08-31 17:07:28","reason":"found in this entry's text, gate cited by this entry"},{"version":"2.1.252","anchor":"contextcost-breakdown-now-counts-tool-descriptions-from-a-r","heading":"Context\/cost breakdown now counts tool descriptions from a recorded prompt 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entry"},{"version":"2.1.252","anchor":"claudemd-now-explicitly-emitted-as-empty-string-under-carved","heading":"claudeMd now explicitly emitted as empty string under carved-slate mode","line":"Under an experimental mode, empty CLAUDE.md content is now sent as an explicit empty string to keep prompt caching stable.","released_at":"2026-08-31 17:07:28","reason":"gate cited by this entry"}],"entries_total":7,"docs":[],"docs_total":0,"gates":[{"version":"2.1.265","state":"unknown","account":null,"baseline":true,"code_default":null},{"version":"2.1.252","state":"off","account":false,"baseline":false,"code_default":null},{"version":"2.1.251","state":"off","account":false,"baseline":false,"code_default":null}],"related":[{"name":"tengu_1p_event_batch_config","slug":"tengu-1p-event-batch-config","description":null},{"name":"tengu_account_plugins_sync_enabled","slug":"tengu-account-plugins-sync-enabled","description":"Plugins you enabled on claude.ai can be pulled to your machine, but only your account server can enable it."},{"name":"tengu_account_skills_sync_enabled","slug":"tengu-account-skills-sync-enabled","description":"Account skills-sync eligibility logic generalized into a reusable descriptor"},{"name":"tengu_adopt_claim","slug":"tengu-adopt-claim","description":"Stale adopted session claims now return their data marked stale instead of being discarded"},{"name":"tengu_adopt_link","slug":"tengu-adopt-link","description":"Adopting an agent's transcript now hard-links the file, copying only when linking is impossible."},{"name":"tengu_adopt_relink","slug":"tengu-adopt-relink","description":"On startup, subagent transcripts stored as symlinks are converted to hard links or copies."},{"name":"tengu_advisor_unknown_content","slug":"tengu-advisor-unknown-content","description":"Advisor output you couldn't see now shows an error or a clear \"declined to advise\" message."},{"name":"tengu_agent_frontmatter_mode_widening_carry_ignored","slug":"tengu-agent-frontmatter-mode-widening-carry-ignored","description":"An agent definition's permissionMode can no longer widen the mode inherited from its parent context."},{"name":"tengu_agent_hooks_origin_untrusted","slug":"tengu-agent-hooks-origin-untrusted","description":"Agents in untrusted folders can no longer define inline MCP servers; trust the project to allow it."},{"name":"tengu_agent_list_attach","slug":"tengu-agent-list-attach","description":null}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-carved-slate","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}