Add sticky_threshold and sticky_override to router decision API#4359
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lramos15 merged 1 commit intomicrosoft:mainfrom Mar 12, 2026
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Pull request overview
This PR updates the auto-mode router decision client contract to support “sticky routing” by (a) optionally sending a sticky_threshold to the router API and (b) consuming/logging a sticky_override flag in the router response for improved traceability and observability.
Changes:
- Extend
RouterDecisionResponseto includesticky_overrideand update response validation accordingly. - Add optional
stickyThresholdtogetRouterDecision()and includesticky_thresholdin the request body when provided. - Log
sticky_overridein router trace output / request logger markdown, and emit an AutomodeService trace when sticky override occurs.
Reviewed changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 3 comments.
| File | Description |
|---|---|
| src/platform/endpoint/node/routerDecisionFetcher.ts | Adds sticky_override to the response contract/validator, adds optional stickyThreshold request parameter, and logs sticky routing data in trace + request logger output. |
| src/platform/endpoint/node/automodeService.ts | Logs sticky override events when the router indicates a sticky routing override occurred. |
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Support threshold-based sticky routing to prevent mid-conversation model switching on low-confidence predictions. Changes: - Add sticky_override bool to RouterDecisionResponse interface and validator - Add optional sticky_threshold parameter to getRouterDecision() - Send sticky_threshold in request body when provided - Log sticky_override in trace output and request logger markdown - AutomodeService logs sticky override events for observability
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lramos15
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TylerLeonhardt
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Support threshold-based sticky routing to prevent mid-conversation model switching on low-confidence predictions.
Changes: