---
title: "Update Experiment Group Metric Settings"
method: PATCH
path: "/projects/{project_id}/experiment-groups/{group_id}/metric-settings"
tags: ["experiment_group"]
---

# Update Experiment Group Metric Settings

`PATCH /projects/{project_id}/experiment-groups/{group_id}/metric-settings`

Set per-group ranking weights. Replaces the full configuration; None = inherit project-level defaults.

## Path parameters

- `project_id` string, uuid4, required
- `group_id` string, uuid4, required

## Request body

- ExperimentGroupMetricSettingsRequest — Request to set per-group ranking weights. Replaces the full configuration. Pass None to clear a group override and inherit project-level defaults. Mirrors `ProjectSettingsUpdate.metric_weights_configuration` in api/routers/project_settings.py.
  - `metric_weights_configuration` object, nullable

## Response `200`

Successful Response

- ExperimentGroupMetricSettingsResponse — Response for the metric-settings sub-resource.
  - `id` string, uuid4, required
  - `metric_weights_configuration` object, nullable

## Other responses

- `422` — Validation Error

## Changes

- **2026-08-13** `344acdc36dbb` — 1 breaking, 1 info
  - removed the enum value `Measures which documents or chunks retrieved were used by the model to generate a response, and how much of the text in the retrieved chunks was used by the model to compose its response.` of the request property `metric_weights_configuration/anyOf[subschema #1]/additionalProperties/description/anyOf[subschema #1: MetricDescriptions]/`
  - removed the `Measures which documents or chunks retrieved were used by the model to generate a response, and how much of the text in the retrieved chunks was used by the model to compose its response.` enum value from the `metric_weights_configuration/anyOf[subschema #1]/additionalProperties/description/anyOf[subschema #1: MetricDescriptions]/` response property for the response status `200`
- …earlier changes not shown

[Full history](https://skmtc.dev/galileo/apis/galileo-api-server/changes/projects/:project_id/experiment-groups/:group_id/metric-settings/patch.md)

---

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