[Bug] error: key value cannot be empty or whitespace (config section: security.root_keys[]): key1 #411
Description
Describe the Bug
Even though I have defined root_keys and private_rsa_keys with values sourced from environment variables in my engine.yaml, the Arcade MCP server still fails to start, giving an error that a key value is empty or whitespace.
How to Reproduce
Steps to reproduce the bug:
Set the following in engine.yaml:
security:
root_keys:
- id: key1
default: true
value: ${env:ROOT_KEY_1}
private_rsa_keys:
- id: key1
default: true
value: ${env:PRIVATE_RSA_KEY}
In your engine.env file, set the following:
ROOT_KEY_1=redacted
PRIVATE_RSA_KEY=redacted
Run the Arcade MCP server Docker container using the docker-compose.yml.
version: "3.8"
services:
arcade-engine:
image: ghcr.io/arcadeai/engine:latest
container_name: arcade_engine
ports:
- "9099:9099"
volumes:
- ./engine.yaml:/bin/engine.yaml
- ./engine.env:/bin/engine.env
env_file:
- ./engine.env
restart: unless-stopped
Observe the error output in the logs:
2025-05-26 22:07:58 arcade_engine | 2025/05/27 05:07:58 Arcade Engine has finished with error: key value cannot be empty or whitespace (config section: security.root_keys[]): key1
Expected Behavior:
The Arcade MCP server should start successfully using the keys provided via environment variables without throwing a configuration error.
