Braintrust
Give the Sazabi agent the Braintrust CLI (bt) in its sandbox to run AI evaluations, experiments, and trace logging.
About
This CLI connection makes the Braintrust CLI (bt) available in the Sazabi agent's sandbox. The agent can run AI evaluations, experiments, and trace logging against your Braintrust account. The tool is baked into the sandbox image; connecting it authenticates the already-installed CLI.
Prerequisites
- A Sazabi project.
- A Braintrust API key (
BRAINTRUST_API_KEY).
Set up in the dashboard
Configure the sandbox in the dashboard under Settings > Sandbox CLIs.
Find Braintrust in the catalog
In Settings > Sandbox CLIs, find Braintrust under Browse sandbox CLIs and choose to connect it.
Provide credentials
Enter the required value: BRAINTRUST_API_KEY — your Braintrust API key. Optionally set BRAINTRUST_API_URL to target a self-hosted or non-default Braintrust endpoint. Save to store it securely; Sazabi injects it into the sandbox when the agent runs.
Set up with the CLI
You can also configure the Braintrust CLI connection with the Sazabi CLI (installed and authenticated — see CLI reference).
sazabi sandbox-clis set --type braintrust --env BRAINTRUST_API_KEY=<your-braintrust-key>To validate the credentials without saving, run the same command with test in place of set (the test command also requires the --env flags).
Verify
Ask the agent, in a thread, to run the bt CLI (for example bt whoami) and confirm it returns real output from your account. If the command is not found, the CLI connection may not be enabled; if it runs unauthenticated, recheck the credentials.
Troubleshooting
Command not found — Confirm the Braintrust CLI connection is enabled for the project under Settings > Sandbox CLIs.
Authentication fails — Recheck the credential values; a rotated or revoked token must be re-entered under Settings > Sandbox CLIs or with sazabi sandbox-clis set --type braintrust.