---
title: "Get Eval Run Improvement Report"
method: GET
path: "/api/platform/v1/eval-runs/{id}/improvement"
tags: ["observability"]
---

# Get Eval Run Improvement Report

`GET /api/platform/v1/eval-runs/{id}/improvement`

## Request

- Base URL: `https://docs.amdahl.ai`
- URL: `https://docs.amdahl.ai/api/platform/v1/eval-runs/{id}/improvement`
- Auth: one of:
  - API key in header `X-API-Key`
  - HTTP bearer

Fetch the before/after improvement report of one eval run in a bounded shape: the per-facet graded pair with scores, per-rubric-line verdicts, cited quotes and the not-applicable counters, plus lift, transition, suggestions and confidence. Read when the full run payload is too large for your transport and you need the facets — no other narrow read carries them.

## Path parameters

- `id` string, required

## Response `200`

OK

- object
  - `data` object, required
    - `run_id` string, required
    - `eval_slug` string
    - `eval_version` string, nullable
    - `status` 'queued' | 'running' | 'complete' | 'failed' | 'canceled', required
    - `improvement` object, nullable, required: The before/after report. `facets[]` is the per-facet graded pair; each side carries score_15, checks_passed / checks_total, dimensions, quotes and the not-applicable counters. NULL — never an empty object, and never an empty `facets` — when the run produced no report (mode "gate", or any refusal); read `absent_reason` beside it.
    - `omitted` object[], required: The fields this bounded shape leaves on the full-row read, each with why and where. Present on EVERY response, so the omission is readable rather than inferred from a payload that came back smaller than expected.
      - `field` string, required
      - `why` string, required
      - `read` string, required: The URI of this run that still carries the field.
    - `absent_reason` string, nullable: Present only when `improvement` is null: why the run produced no report.

## Other responses

- `400`: Invalid input - failed schema validation
- `401`: Authentication required
- `403`: Forbidden - missing scope or role
- `404`: Not found
- `500`: Internal server error

---

[API](https://skmtc.dev/amdahl/apis/amdahl-platform-api.md) · [All operations](https://skmtc.dev/amdahl/apis/amdahl-platform-api/llms.txt) · [OpenAPI document](https://skmtc.dev/amdahl/apis/amdahl-platform-api/revisions/d4eee33e2472?raw)