---
title: "Get App Substitution Variables"
method: GET
path: "/api/clusters/{clusterName}/apps/{appName}/substitution"
tags: ["Apps"]
---

# Get App Substitution Variables

`GET /api/clusters/{clusterName}/apps/{appName}/substitution`

Retrieves the substitution variables for a specific app in a cluster.

## Path parameters

- `clusterName` string, required
- `appName` string, required

## Headers

- `Authorization` string, required

## Response `200`

Substitution variables for the app

- string

## Other responses

- `403` — No valid ACL
- `500` — No substitution variables defined for this app" or "Not a valid app" or "No cluster

---

[API](https://skmtc.net/signal18/apis/untitled-api.md) · [All operations](https://skmtc.net/signal18/apis/untitled-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/signal18/untitled-api/versions/7465ea0ee21a/schema)