{"name":"tengu_artifact_thumb_direct","slug":"tengu-artifact-thumb-direct","family":"flag","title":"Feature flags","noun":"feature flag","description":"Default `false`. Turns on thumbnail capture for the inline upload lane: artifact publishing starts a thumbnail capture of the page there, skipped when the Chrome preflight fails or the page is too large. The signed upload lane captures a thumbnail whenever the server provides a thumbnail upload URL, regardless of the flag; with the flag on, a failed signed PUT that falls back to inline keeps that running capture for the fallback instead of cancelling it with the reason `index_put_failed`.","description_source":"code","described_by":{"bundle":"2.1.210","author":"claude-opus-5-5"},"presence":{"first_seen":"2.1.208","removed_in":"2.1.211","in_current_build":false,"newest_mined":"2.1.308","builds":3,"mined_builds":149,"first_cited":null},"aliases":[],"entries":[],"entries_total":0,"docs":[],"docs_total":0,"gates":[],"related":[{"name":"tengu_artifact_ask","slug":"tengu-artifact-ask","description":"Artifact publishing now recognizes a \"still settling\" server state and retries instead of failing"},{"name":"tengu_artifact_ask_granted","slug":"tengu-artifact-ask-granted","description":"Claude Code now logs telemetry when it asks for, and receives, permission to publish an artifact"},{"name":"tengu_artifact_five_class_asks","slug":"tengu-artifact-five-class-asks","description":"Pinning someone else's artifact can now be auto-allowed instead of prompting, under an experiment"},{"name":"tengu_artifact_foreign_read_unasked","slug":"tengu-artifact-foreign-read-unasked","description":"A new unified consent system governs sensitive artifact actions like delete and access changes"},{"name":"tengu_artifact_hljs_highlight","slug":"tengu-artifact-hljs-highlight","description":"Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off."},{"name":"tengu_artifact_legacy_verb","slug":"tengu-artifact-legacy-verb","description":"A telemetry event records which legacy artifact verb was steered onto the new schema."},{"name":"tengu_artifact_mcp_list","slug":"tengu-artifact-mcp-list","description":"MCP tool calls to artifact servers now pass through argument-rewriting and result-observing hooks"},{"name":"tengu_artifact_mcp_switch","slug":"tengu-artifact-mcp-switch","description":"MCP config building gets a new caching layer, currently unread\/off"},{"name":"tengu_artifact_mermaid_diagrams","slug":"tengu-artifact-mermaid-diagrams","description":"Artifact syntax highlighting and mermaid diagrams are now always on; three other gates were renamed and stay off."},{"name":"tengu_artifact_preview","slug":"tengu-artifact-preview","description":"An artifact preview action would screenshot a page locally at several widths, but it cannot run here."}],"url":"https:\/\/changelogs.core-directive.com\/reference\/flag\/tengu-artifact-thumb-direct","family_url":"https:\/\/changelogs.core-directive.com\/reference\/flag.json"}