Set an environment variable

Create or update one environment variable. The running service receives it on its next deployment.

POST/api/services/{id}/envHTTPS

Request & response examples

Request exampleServer-side

curl --fail-with-body --request POST \
  'https://app.helicarrier.xyz/api/services/YOUR_ID/env' \
  -H "Authorization: Bearer $HELI_API_KEY" \
  -H 'Content-Type: application/json' \
  --data '{
  "key": "NODE_ENV",
  "value": "production"
}'

const response = await fetch(
  "https://app.helicarrier.xyz/api/services/YOUR_ID/env",
  {
    method: "POST",
    headers: {
      Authorization: `Bearer ${process.env.HELI_API_KEY}`,
      "Content-Type": "application/json"
    },
    body: JSON.stringify({
      "key": "NODE_ENV",
      "value": "production"
    })
  }
);
const data = await response.json();
if (!response.ok) {
  throw new Error(`HTTP ${response.status}: ${data.error}`);
}
// Inspect data; avoid logging secret responses.

import os
import requests

response = requests.request(
    "POST",
    "https://app.helicarrier.xyz/api/services/YOUR_ID/env",
    headers={
        "Authorization": f"Bearer {os.environ['HELI_API_KEY']}"
    },
    json={
      "key": "NODE_ENV",
      "value": "production"
    },
    timeout=30,
)
response.raise_for_status()
data = response.json()
# Inspect data; avoid logging secret responses.

Response example200

{
  "status": "saved"
}

Illustrative values · selected fields

Response details OpenAPI

Authorization

An account key with access, or a project/service key with variables:write. The resource must be within the key’s project, service, and environment scope.

Authorization: Bearer <key>Key setup

Path parameters

idstringrequired

Service id.

Request bodyapplication/json

keystringrequired

Variable name.

valuestringrequired

Variable value.

Response 200

A successful response saves the variable. The running service receives the updated value on its next deployment.

Examples show selected response fields with illustrative values. Your response can contain additional fields.

statusstring

Current state of the resource or operation.

Errors

400

Invalid parameters. Check the required fields, types, and resource configuration.

401

The API key is missing, invalid, or revoked.

403

The caller or key scope does not permit this operation.

500

The operation could not be completed. Check resource state before retrying a write.

Error handling and safe retries

ALSO AVAILABLE VIA MCP

`set_env`

Required MCP arguments: id, key, value. Send path, query, and body fields together as tool arguments.

Connect your agent

curl --fail-with-body --request POST \ 'https://app.helicarrier.xyz/api/services/YOUR_ID/env' \ -H "Authorization: Bearer $HELI_API_KEY" \ -H 'Content-Type: application/json' \ --data '{ "key": "NODE_ENV", "value": "production" }'

import os import requests response = requests.request( "POST", "https://app.helicarrier.xyz/api/services/YOUR_ID/env", headers={ "Authorization": f"Bearer {os.environ['HELI_API_KEY']}" }, json={ "key": "NODE_ENV", "value": "production" }, timeout=30, ) response.raise_for_status() data = response.json() # Inspect data; avoid logging secret responses.