---
title: "Prepare the configured Conformance check for an active Loop run"
method: GET
path: "/experimental/projects/{projectId}/loops/conformance/checks/prepare"
tags: ["Loops", "Context"]
---

# Prepare the configured Conformance check for an active Loop run

`GET /experimental/projects/{projectId}/loops/conformance/checks/prepare`

## Request

- Base URL: `https://api.tessl.io`
- URL: `https://api.tessl.io/experimental/projects/{projectId}/loops/conformance/checks/prepare`
- Auth: none declared

## Path parameters

- `projectId` string, uuid, required

## Headers

- `Authorization` string

## Response `200`

Default Response

- object
  - `data` object, required
    - `id` string, uuid, required
    - `type` 'conformance-check-preparation', required
    - `attributes` object, required
      - `orgId` string, uuid, required
      - `projectId` string, uuid, required
      - `selection` union, required
        - object
          - `mode` 'all', required
        - object
          - `mode` 'selected', required
          - `groups` string[], required
      - `group` string
      - `shouldRun` boolean, required
      - `reason` 'irrelevant-change'
      - `missingGroups` string[], required
      - `coverageLimited` boolean, required
      - `revisionRange` union
        - object
          - `status` 'ready', required
          - `baseCommitSha` string, required
          - `headCommitSha` string, required
          - `pushCount` integer, required
        - object
          - `status` 'none', required
          - `reason` 'tree_run', required
        - object
          - `status` 'unavailable', required
          - `reason` string, required
      - `declarations` object[], required
        - `declarationId` string, uuid
        - `group` string
        - `status` union, required
          - 'ready'
          - 'disabled'
          - 'unavailable'
        - `reason` string

## Other responses

- `401`: Unauthorized
- `403`: Forbidden
- `404`: Not Found
- `500`: Internal Server Error

## Changes

- **2026-10-16** `29f2f890a11f`: 1 info
  - added the optional property `data/attributes/revisionRange` to the response with the `200` status
- **2026-10-13** `49f82b2bfd61`: 2 breaking, 2 warning, 1 info
  - the response property `data/attributes/declarations/items/declarationId` became optional for the status `200`
  - the response property `data/attributes/declarations/items/group` became optional for the status `200`
  - removed the optional property `data/attributes/declarations/items/lineageId` from the response with the `200` status
  - removed the optional property `data/attributes/declarations/items/verifierId` from the response with the `200` status
  - …1 more
- **2026-10-12** `26b34055b03f`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/tessl/apis/tessl-api/changes/experimental/projects/:projectId/loops/conformance/checks/prepare/get.md)

---

[API](https://skmtc.dev/tessl/apis/tessl-api.md) · [All operations](https://skmtc.dev/tessl/apis/tessl-api/llms.txt) · [OpenAPI document](https://skmtc.dev/tessl/apis/tessl-api/revisions/7386f1e6295b?raw)