---
title: "Gets diagnostic stats for an experiment."
method: GET
path: "/creator-configs-public-api/v1/experimentation/universes/{universeId}/experiments/{experimentId}/stats"
tags: ["Experiments"]
---

# Gets diagnostic stats for an experiment.

`GET /creator-configs-public-api/v1/experimentation/universes/{universeId}/experiments/{experimentId}/stats`

## Request

- Base URL: `https://apis.roblox.com`
- URL: `https://apis.roblox.com/creator-configs-public-api/v1/experimentation/universes/{universeId}/experiments/{experimentId}/stats`
- Auth: one of:
  - API key in cookie `.ROBLOSECURITY`
  - API key in header `x-api-key`
  - OAuth 2
    - Authorization code: `https://apis.roblox.com/oauth/v1/authorize`
    - Token URL: `https://apis.roblox.com/oauth/v1/token` scopes: `universe:read`

## Path parameters

- `universeId` integer, required
- `experimentId` string, required

## Response `200`

OK

- GetExperimentStatsResponse: Response body for `GET /v1/experimentation/universes/{universeId}/experiments/{experimentId}/stats`.
  - `operation` ExperimentStatsOperation: Async operation for fetching experiment stats. When Done is true exactly one of Error or ExperimentStats is set; when false, neither is.
    - `experimentId` integer: Experiment ID the stats are for.
    - `lastModifiedTime` string, date-time, nullable: UTC time the operation was last modified.
    - `done` boolean: True once the stats fetch terminates (success or failure).
    - `error` ExperimentApiError: Application-layer error emitted on a failed experiment operation.
      - `errorType` 'EXPERIMENT_API_ERROR_TYPE_INVALID_VARIANT_CONFIGURATION' | 'EXPERIMENT_API_ERROR_TYPE_INVALID_VARIANT_LABEL' | 'EXPERIMENT_API_ERROR_TYPE_MUST_HAVE_EXACTLY_ONE_BASELINE_VARIANT' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_OVERLAPPING_RUNTIME' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_INVALID_SCORING_CONFIGURATIONS' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_UNEXPECTED_PRODUCT_TYPE' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_EMPTY_CONFIGURATION' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_EMPTY_VARIANT_METADATA' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANT_WEIGHT_MUST_BE_POSITIVE' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANT_WEIGHTS_UNBALANCED' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_PLACE_CONFIG_REQUIRES_SCORING_ID_OR_DEFAULT' | 'EXPERIMENT_API_ERROR_TYPE_CONFIGS_MISSING_VARIANT' | 'EXPERIMENT_API_ERROR_TYPE_CONFIGS_VARIANT_MISSING_KEY' | 'EXPERIMENT_API_ERROR_TYPE_CONFIGS_VARIANT_MISSING_VALUE' | 'EXPERIMENT_API_ERROR_TYPE_CONFIGS_KEY_ALREADY_IN_USE' | 'EXPERIMENT_API_ERROR_TYPE_SYSTEM_ERROR' | 'EXPERIMENT_API_ERROR_TYPE_EXPERIMENT_RESULTS_NOT_FOUND' | 'EXPERIMENT_API_ERROR_TYPE_INVALID_TARGETING_CRITERIA' | 'EXPERIMENT_API_ERROR_TYPE_TARGETING_NOT_ALLOWED' | 'EXPERIMENT_API_ERROR_TYPE_INVALID_DURATION' | 'EXPERIMENT_API_ERROR_TYPE_CONFIGS_VARIANT_CONFIG_NOT_FOUND' | 'EXPERIMENT_API_ERROR_TYPE_INVALID_EXPERIMENT_NAME' | 'EXPERIMENT_API_ERROR_TYPE_CONDITIONAL_CONFIG_REQUIRES_NULL_BASELINE' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_CONTROL_VARIANT_MUST_MATCH_CURRENT_CONFIGURATION' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANTS_MUST_COVER_SAME_PLACES' | 'EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANT_HAS_DUPLICATE_PLACES' | 'EXPERIMENT_API_ERROR_TYPE_CONFIGS_KEY_HAS_RESERVED_PREFIX': Validation failures. EXPERIMENT_API_ERROR_TYPE_INVALID_VARIANT_CONFIGURATION EXPERIMENT_API_ERROR_TYPE_INVALID_VARIANT_LABEL EXPERIMENT_API_ERROR_TYPE_MUST_HAVE_EXACTLY_ONE_BASELINE_VARIANT EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_OVERLAPPING_RUNTIME EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_INVALID_SCORING_CONFIGURATIONS EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_UNEXPECTED_PRODUCT_TYPE EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_EMPTY_CONFIGURATION EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_EMPTY_VARIANT_METADATA EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANT_WEIGHT_MUST_BE_POSITIVE EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANT_WEIGHTS_UNBALANCED EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_PLACE_CONFIG_REQUIRES_SCORING_ID_OR_DEFAULT EXPERIMENT_API_ERROR_TYPE_CONFIGS_MISSING_VARIANT EXPERIMENT_API_ERROR_TYPE_CONFIGS_VARIANT_MISSING_KEY EXPERIMENT_API_ERROR_TYPE_CONFIGS_VARIANT_MISSING_VALUE EXPERIMENT_API_ERROR_TYPE_CONFIGS_KEY_ALREADY_IN_USE EXPERIMENT_API_ERROR_TYPE_SYSTEM_ERROR EXPERIMENT_API_ERROR_TYPE_EXPERIMENT_RESULTS_NOT_FOUND EXPERIMENT_API_ERROR_TYPE_INVALID_TARGETING_CRITERIA EXPERIMENT_API_ERROR_TYPE_TARGETING_NOT_ALLOWED EXPERIMENT_API_ERROR_TYPE_INVALID_DURATION EXPERIMENT_API_ERROR_TYPE_CONFIGS_VARIANT_CONFIG_NOT_FOUND EXPERIMENT_API_ERROR_TYPE_INVALID_EXPERIMENT_NAME EXPERIMENT_API_ERROR_TYPE_CONDITIONAL_CONFIG_REQUIRES_NULL_BASELINE EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_CONTROL_VARIANT_MUST_MATCH_CURRENT_CONFIGURATION EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANTS_MUST_COVER_SAME_PLACES EXPERIMENT_API_ERROR_TYPE_MATCHMAKING_VARIANT_HAS_DUPLICATE_PLACES EXPERIMENT_API_ERROR_TYPE_CONFIGS_KEY_HAS_RESERVED_PREFIX
      - `errorCode` string, nullable: Stable machine-readable error code.
      - `errorMessage` string, nullable: Human-readable description of the failure.
      - `errorContext` object, nullable: Optional structured context about the failure (field paths, offending values, etc.).
    - `experimentStats` ExperimentStats: Computed stats for a running experiment.
      - `isSrmDetected` boolean: True if Sample Ratio Mismatch (SRM) was detected for the experiment.

## Other responses

- `400`: Bad Request
- `401`: Unauthorized
- `404`: Not Found

## Changes

- **2026-09-17** `7c6787738100`: 1 warning
  - added the new `EXPERIMENT_API_ERROR_TYPE_CONFIGS_KEY_HAS_RESERVED_PREFIX` enum value to the `operation/allOf[#/components/schemas/ExperimentStatsOperation]/error/allOf[#/components/schemas/ExperimentApiError]/errorType/allOf[#/components/schemas/ExperimentApiErrorType]/` response property for the response status `200`
- **2026-08-19** `1d2042bb1a48`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/roblox/apis/roblox-api/changes/creator-configs-public-api/v1/experimentation/universes/:universeId/experiments/:experimentId/stats/get.md)

---

[API](https://skmtc.dev/roblox/apis/roblox-api.md) - [All operations](https://skmtc.dev/roblox/apis/roblox-api/llms.txt) - [OpenAPI document](https://skmtc.dev/roblox/apis/roblox-api/revisions/bcfdc20689cd?raw)