uefn-editor-logs

Source: Claude/docs/mcp/editor-logs.md, recipes in recipes.json. Before every call, apply uefn-mcp-lab-guard (open project = lab, lab paths only). To create/use/remove a test asset, see uefn-create-use-remove-one-script.

Rules

• Paths always in GUID form: /<guid>/<project>/.... The guard is not bypassed: a refusal is reported as is.
• If a recipe fails: report the exact error and stop (no creative retries).
• DO NOT read the whole log (2.4 MB): always use a cursor + maxEntries.

Verified recipes

1. Cursor: EditorToolset.LogsToolset/GetLogEntries {category:"", pattern:"", maxEntries:1} -> last line.
2. Perform the action, then GetLogEntries {category:"", maxEntries:300}; new lines = after the LAST occurrence of the cursor line.
3. Noise filter: GetLogEntries {category:"", maxEntries:50, pattern:"^(?!.*LogModelContextProtocol)"}.
4. LogsToolset/GetLogCategories (warn), GetVerbosity, SetVerbosity (restore the initial value).
5. Reason for StartSession failure: GetLogEntries {category:"", maxEntries:0, pattern:"UEFNValidation"}.
6. EditorAppToolset: SetCameraTransform (restore the transform saved by GetCameraTransform), CaptureViewport, SetViewportViewMode (enum VMI_...), GetCVarValue, SearchCVars, ShowNotification, SetShowFlag, SetEditorMode, SetContentBrowserPath (subfolders only), SelectAssets, OpenEditorForAsset.

Pitfalls

• GetLogEntries {} fails: the default category is the toolset name; always category:"".
• Every MCP call is itself in the log: a diff is never empty (filter out LogModelContextProtocol).
• ShowNotification writes no log lines: for a marker, use a call that fails.
• Invalid regex -> silent [].

To try (not verified)

• SessionToolset/GetClientLogEntries: NOT verified. Always answers "No client log was found; start a play-in-client session first." even with a live client (3 sessions, T-015 C2). Working route: LogsToolset/GetLogEntries (Verse Print of a session in the editor log, see the recipe note).
• SelectActors / FocusOnActors / SelectOutlinerFolders with a real target: refused by the guard (actor path with . after the root) or no Outliner panel open; with [] they answer ok. Do not bypass.