{"name":"tengu_tool_pear","slug":"tengu-tool-pear","family":"flag","title":"Feature flags","noun":"feature flag","description":"A new capability gate tied to the opus_5_5_prompt_bundle flag can unlock certain model features, and a tool_pear beta header now depends on a flag not yet read for this account","description_source":"entry","described_by":{"version":"2.1.280","anchor":"new-model-capability-gate-tied-to-opus-5-5-prompt-bundle"},"presence":{"first_seen":"2.1.138","removed_in":null,"in_current_build":true,"newest_mined":"2.1.309","builds":150,"mined_builds":150,"first_cited":{"version":"2.1.280","released_at":"2026-09-22 15:44:39","spans":1}},"aliases":[],"entries":[{"version":"2.1.280","anchor":"new-model-capability-gate-tied-to-opus-5-5-prompt-bundle","heading":"New model-capability gate tied to opus_5_5_prompt_bundle","line":"A new capability gate tied to the opus_5_5_prompt_bundle flag can unlock certain model features, and a tool_pear beta header now depends on a flag not yet read for this account","released_at":"2026-09-22 15:44:39","reason":"gate cited by this entry, found in this entry's text"}],"entries_total":1,"docs":[],"docs_total":0,"gates":[{"version":"2.1.280","state":"off","account":false,"baseline":false,"code_default":false}],"related":[{"name":"tengu_tool_cgroup","slug":"tengu-tool-cgroup","description":"On Linux you can cap memory for shell commands so a runaway process cannot eat your machine."},{"name":"tengu_tool_cgroup_exclude_classes","slug":"tengu-tool-cgroup-exclude-classes","description":"Memory limits now reach npm, git, tmux, LSP, MCP and hooks, but everything except Bash is excluded."},{"name":"tengu_tool_cpu_by_phase","slug":"tengu-tool-cpu-by-phase","description":"Remote sessions now report per-phase CPU usage split between CLI and tool subprocesses."},{"name":"tengu_tool_detach","slug":"tengu-tool-detach","description":"A long-running tool call can now be moved to the background instead of blocking when a new message comes in"},{"name":"tengu_tool_memory_cgroup","slug":"tengu-tool-memory-cgroup","description":"On Linux you can cap memory for shell commands so a runaway process cannot eat your machine."},{"name":"tengu_tool_result_dedup","slug":"tengu-tool-result-dedup","description":null},{"name":"tengu_tool_result_pairing_repaired","slug":"tengu-tool-result-pairing-repaired","description":"Tool-result repair now detects and reports 'misplaced' tool results in debug output"},{"name":"tengu_tool_result_persistence","slug":"tengu-tool-result-persistence","description":null},{"name":"tengu_tool_schema_sizes","slug":"tengu-tool-schema-sizes","description":"A new event breaks down tool schema sizes by category, deduplicated and capped at 512 hashes."},{"name":"tengu_tool_search_mode_decision","slug":"tengu-tool-search-mode-decision","description":"An analytics event, not a feature flag. Claude Code logs it when it decides whether tool search is enabled for a request, from the main query path and from compaction. Fields include `enabled`, `mode`, `reason` (for example `model_unsupported` or `no_tools_in_request`), `checkedModel`, `mcpToolCount` and `mcpNonBlocking`."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-tool-pear","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}