# ADDRESS
Target gRPC server address in `host:port` format.
## When to use
- Use in the file when test target is fixed
- Omit when target is supplied by `GRPCTESTIFY_ADDRESS`
## Minimal example
```gctf
--- ADDRESS ---
localhost:4770
```
## Rules
- One `ADDRESS` per document
- Keep environment-specific values in env vars for CI portability
## Related
- [Test File Format](../api/test-files)