Build Observable CLI Scripts

Fail clearly

In suitable Bash scripts, set -euo pipefail stops on failed commands, missing variables, and failures hidden inside a pipeline. mktemp creates a safely named temporary file; a trap runs cleanup when the script exits. Also set network timeouts and check required tools. Save and validate the model response before overwriting an important file.

For structured automation, ask for JSON and validate it with jq -e against allowed values. If validation fails, stop rather than guessing.

Scenario: A summarizer returns prose before its JSON object. A strict validator rejects it, preserving the release pipeline instead of passing malformed metadata downstream.