Delete evaluator templates
Tobias WochingerRemove evaluator templates you no longer need from the UI, the unstable public API, and MCP, with safeguards that block deletion while rules still depend on them.
You can now delete evaluator templates you no longer need — from the Langfuse UI, the unstable public API (DELETE /unstable/evaluators/{id}), and MCP. Deleting an evaluator template removes all of its versions in one step.
To prevent accidental breakage, deletion is blocked while running evaluators or evaluation rules still reference the template — the UI surfaces those dependencies upfront in the delete dialog so you know what to detach first. Langfuse-managed evaluator templates cannot be deleted.
The public API and MCP tools are unstable and may change while the underlying evaluation data model is being redesigned. The UI workflow remains fully supported.