---
title: "Add or update environment variable"
method: PUT
path: "/env-groups/{envGroupId}/env-vars/{envVarKey}"
tags: ["Environment Groups"]
---

# Add or update environment variable

`PUT /env-groups/{envGroupId}/env-vars/{envVarKey}`

Add or update a particular environment variable in a particular environment group.

## Path parameters

- `envGroupId` string, required
- `envVarKey` string, required

## Request body

- union
  - object
    - `value` string, required
  - object
    - `generateValue` boolean, required

## Response `200`

OK

- EnvGroup
  - `id` string, required
  - `name` string, required
  - `ownerId` string, required
  - `createdAt` string, date-time, required
  - `updatedAt` string, date-time, required
  - `serviceLinks` EnvGroupLink[], required — List of serviceIds linked to the envGroup
    - `id` string, required
    - `name` string, required
    - `type` 'static' | 'web' | 'pserv' | 'worker' | 'cron', required
  - `environmentId` string
  - `envVars` EnvVar[], required
    - `key` string, required
    - `value` string, required
  - `secretFiles` SecretFile[], required
    - `name` string, required
    - `content` string, required

## Other responses

- `400` — The request could not be understood by the server.
- `401` — Authorization information is missing or invalid.
- `404` — Unable to find the requested resource.
- `429` — Rate limit has been surpassed.
- `500` — An unexpected server error has occurred.
- `503` — Server currently unavailable.

---

[API](https://skmtc.dev/render/apis/render-public-api.md) · [All operations](https://skmtc.dev/render/apis/render-public-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/render/render-public-api/revisions/80e0ff74d033/schema)