Everruns SDKs default to the Everruns Cloud API URL
The Python, TypeScript and Rust SDKs defaulted to the placeholder
https://custom.example.com/api, so a client created with only
EVERRUNS_API_KEY could not reach anything. The default is now
https://app.everruns.com/api.
Self-hosted deployments keep pointing the client at their server with
EVERRUNS_API_URL:
export EVERRUNS_API_URL=https://everruns.example.internal/api