fix(mcp): stop empty UI-tool errors and tighten tool-usage guardrails#7911
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andypalmi wants to merge 2 commits into
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fix(mcp): stop empty UI-tool errors and tighten tool-usage guardrails#7911andypalmi wants to merge 2 commits into
andypalmi wants to merge 2 commits into
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July 23, 2026 01:42
router.resolve throws an Error with no message (only extra own
properties) for an unknown route name in a production build, which the
dispatcher's catch collapsed to `err.message` and lost entirely. The
dispatcher now falls back to the error's own properties when message is
empty. ui_navigate also now catches resolve/push directly and returns a
clean, structured failure instead of letting an unnamed-route lookup
throw past it, and ui_list_routes stops hiding named redirect-only
routes (like an application's landing route) from route discovery.
Closes FlowFuse/engineering#188
…isions
ui_navigate's id param now warns explicitly that it must be a real
entity id from a list/get tool, never a display name, and clarifies
that success: true only confirms the route matched - not that the
target entity exists.
platform_create_application now says to check platform_list_applications
for a name collision before creating one. platform_create_remote_instance
now says to assign the device to an application right away when the user
references one, instead of leaving it unassigned by default.
platform_create_hosted_instance makes the name-availability check
mandatory and says to offer the user alternative names on a collision
rather than picking one silently.
Closes FlowFuse/engineering#185, FlowFuse/engineering#182, FlowFuse/engineering#183
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## fix/expert-mcp-latest-stack-and-spec #7911 +/- ##
========================================================================
- Coverage 75.65% 75.64% -0.01%
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Files 432 432
Lines 23087 23084 -3
Branches 6126 6124 -2
========================================================================
- Hits 17466 17462 -4
- Misses 5621 5622 +1
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Stacked on #7908.
Summary
ui_navigate(and any other UI automation tool) could returnTool "X" failed:with nothing after the colon, because vue-router throws anErrorwith nomessagein production for an unknown route name, and the dispatcher's catch collapsed straight toerr.message. The dispatcher now falls back to the error's own properties so the reason is never lost.ui_navigatealso now catchesresolve/pushdirectly and returns a clean, structured failure.ui_list_routesno longer hides named redirect-only routes (like an application's landing route) from discovery.platform_create_application/platform_create_remote_instance/platform_create_hosted_instanceare explicit about checking for name collisions before creating and asking the user instead of guessing.Closes
Test plan
npx vitest run --config ./config/vitest.config.ts test/unit/frontend/mcp/tools/navigation.spec.js test/unit/frontend/mcp/tools/routes.spec.js test/unit/frontend/services/automations.service.spec.js- all passingnpx eslinton all touched files - clean