---
title: "Update a threshold"
method: PUT
path: "/v0/projects/{project}/thresholds/{threshold}"
tags: ["projects", "thresholds"]
---

# Update a threshold

`PUT /v0/projects/{project}/thresholds/{threshold}`

Update a threshold for a project. The user must have `edit` permissions for the project, or provide a valid project key for the project. The new model will be added to the threshold and used going forward. The old model will be replaced but still show up in the report history and alerts created when it was active.

## Path parameters

- `project` string, required
- `threshold` string, uuid, required

## Request body

- union
  - JsonUpdateModel
    - `lower_boundary` number, double
    - `max_sample_size` integer
    - `min_sample_size` integer
    - `test` 'static' | 'percentage' | 'z_score' | 't_test' | 'log_normal' | 'iqr' | 'delta_iqr', required
    - `upper_boundary` number, double
    - `window` integer
  - JsonRemoveModel
    - `test` string, required

## Response `200`

successful operation

- JsonThreshold
  - `branch` JsonBranch, required
    - `archived` string, date-time
    - `created` string, date-time, required
    - `head` JsonHead, required
      - `created` string, date-time, required
      - `replaced` string, date-time
      - `start_point` JsonStartPoint
        - `branch` string, uuid, required
        - `head` string, uuid, required
        - `version` JsonVersion, required
          - `hash` string
          - `number` integer, required
      - `uuid` string, uuid, required
      - `version` JsonVersion
        - `hash` string
        - `number` integer, required
    - `modified` string, date-time, required
    - `name` string, required
    - `project` string, uuid, required
    - `slug` string, required
    - `uuid` string, uuid, required
  - `created` string, date-time, required
  - `measure` JsonMeasure, required
    - `archived` string, date-time
    - `created` string, date-time, required
    - `modified` string, date-time, required
    - `name` string, required
    - `project` string, uuid, required
    - `slug` string, required
    - `units` string, required
    - `uuid` string, uuid, required
  - `model` JsonModel
    - `created` string, date-time, required
    - `lower_boundary` number, double
    - `max_sample_size` integer
    - `min_sample_size` integer
    - `replaced` string, date-time
    - `test` 'static' | 'percentage' | 'z_score' | 't_test' | 'log_normal' | 'iqr' | 'delta_iqr', required
    - `upper_boundary` number, double
    - `uuid` string, uuid, required
    - `window` integer
  - `modified` string, date-time, required
  - `project` string, uuid, required
  - `testbed` JsonTestbed, required
    - `archived` string, date-time
    - `created` string, date-time, required
    - `modified` string, date-time, required
    - `name` string, required
    - `project` string, uuid, required
    - `slug` string, required
    - `spec` JsonSpec — A hardware spec
      - `architecture` 'x86_64' | 'aarch64', required
      - `archived` string, date-time
      - `cpu` integer, required
      - `created` string, date-time, required
      - `disk` integer, required
      - `fallback` string, date-time
      - `memory` integer, required
      - `modified` string, date-time, required
      - `name` string, required
      - `network` boolean, required
      - `os` 'linux' | 'macos' | 'windows', required
      - `sandbox` 'firecracker'
      - `slug` string, required
      - `uuid` string, uuid, required
    - `uuid` string, uuid, required
  - `uuid` string, uuid, required

## Other responses

- `4XX` — Error
- `5XX` — Error

---

[API](https://skmtc.net/bencherdev/apis/bencher-api.md) · [All operations](https://skmtc.net/bencherdev/apis/bencher-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/bencherdev/bencher-api/versions/84086e99e6cd/schema)