{"name":"tengu_vellum_siding","slug":"tengu-vellum-siding","family":"flag","title":"Feature flags","noun":"feature flag","description":"When the product-feedback policy changes, Claude Code now re-sends every feature switch to the VS Code extension, not just two of them","description_source":"entry","described_by":{"version":"2.1.284","anchor":"vs-code-gate-refresh-recomputes-every-gate-when-policy-chang"},"presence":{"first_seen":"2.1.143","removed_in":null,"in_current_build":true,"newest_mined":"2.1.308","builds":144,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[{"version":"2.1.284","anchor":"vs-code-gate-refresh-recomputes-every-gate-when-policy-chang","heading":"VS Code extension refreshes all its feature switches when policy changes","line":"When the product-feedback policy changes, Claude Code now re-sends every feature switch to the VS Code extension, not just two of them","released_at":"2026-09-28 17:11:59","reason":"gate cited by this entry"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[{"version":"2.1.284","state":"off","account":false,"baseline":false,"code_default":false}],"related":[{"name":"tengu_vellum_anchor","slug":"tengu-vellum-anchor","description":"The out-of-credits message can add a \"progress saved\" note, off unless a server enables it."},{"name":"tengu_vellum_ash","slug":"tengu-vellum-ash","description":"Default `[]`. A list of model name fragments: when the current main model's name contains any non-empty entry, `TodoWrite` and the task tools (`TaskCreate`, `TaskGet`, `TaskUpdate`, `TaskList`) are disabled and the todo and task reminder messages are not added. A non-array or empty value changes nothing."},{"name":"tengu_vellum_lantern","slug":"tengu-vellum-lantern","description":"Default `false`. Turns on the alternate prompt mode that `CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT` controls, for eligible models (`claude-opus-4-7`, model IDs ending in `-eap`, or models listed in the `simple_system_prompt` client data or the `tengu_velvet_cascade` flag). `-eap` and listed models get the mode whether or not this flag is on, and a truthy or explicitly falsy `CLAUDE_CODE_SIMPLE_SYSTEM_PROMPT` overrides both."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-vellum-siding","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}