---
title: "Get a count of registry instruments selected for the given exercise UUID."
method: GET
path: "/collection-instrument-api/1.0.2/registry-instrument/count/exercise-id/{exercise_id}"
tags: ["registry-instrument"]
---

# Get a count of registry instruments selected for the given exercise UUID.

`GET /collection-instrument-api/1.0.2/registry-instrument/count/exercise-id/{exercise_id}`

## Request

- Base URL: `https://localhost:8002`
- URL: `https://localhost:8002/collection-instrument-api/1.0.2/registry-instrument/count/exercise-id/{exercise_id}`
- Auth: HTTP basic

## Path parameters

- `exercise_id` string, uuid, required

## Response `200`

Returns a count of selected registry instruments for the given exercise UUI

- object

## Changes

- **2025-07-31** `8897fbcfad31`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/office-of-national-statistics/apis/collection-instrument/changes/collection-instrument-api/1.0.2/registry-instrument/count/exercise-id/:exercise_id/get.md)

---

[API](https://skmtc.dev/office-of-national-statistics/apis/collection-instrument.md) - [All operations](https://skmtc.dev/office-of-national-statistics/apis/collection-instrument/llms.txt) - [OpenAPI document](https://skmtc.dev/office-of-national-statistics/apis/collection-instrument/revisions/8897fbcfad31?raw)