---
title: "Get Eval Rollout Statistics Route"
method: GET
path: "/api/v1/eval/{eval_run_id}/rollout-statistics"
tags: ["eval"]
---

# Get Eval Rollout Statistics Route

`GET /api/v1/eval/{eval_run_id}/rollout-statistics`

## Path parameters

- `eval_run_id` string, required

## Response `200`

Successful Response

- EvalRolloutStatisticsResponse
  - `eval_run_id` string, required — Evaluation run whose rollouts were sampled.
  - `snapshots` EvalRolloutStatisticResponse[], required — Runtime-computed distributions for the evaluation.
    - `eval_run_id` string, required — Evaluation run that produced this snapshot.
    - `xid` string, required — Evaluation rollout XID sampled by this snapshot.
    - `stage` string, required — Pipeline stage that produced the trajectories.
    - `knob_name` string, required — Trajectory setting represented by the distribution.
    - `unit` string, required — Unit used by the setting and sample values.
    - `samples` number[] — Observed values.
    - `sample_count` integer, required — Number of trajectories sampled.
    - `created_at` string, date-time, required — Time when the underlying evaluation completed.

---

[API](https://skmtc.dev/trajectory/apis/trajectory-api.md) · [All operations](https://skmtc.dev/trajectory/apis/trajectory-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/trajectory/trajectory-api/revisions/d930b23b9602/schema)