Command Hello

Command Hello

Purpose

This SkillRun capsule demonstrates the Level 0 command adapter. It is intentionally small: SkillRun Core starts an explicit argv command, creates standard IPC files, and validates the output envelope written by the command.

SOP

1. Accept a single name value and produce a short greeting.
2. Treat stdout and stderr as logs only. Do not put the result on stdout.
3. Write the result envelope to the path in SKILLRUN_OUTPUT_JSON.
4. Write artifacts only inside the directory in SKILLRUN_ARTIFACT_DIR.
5. Do not use network access, package managers or dynamic dependency installs.

Recovery Guidance

If the command adapter fails with DependencyError, ask the user to install or select the declared command executable. If it fails with ProtocolViolation, inspect the run logs and ensure the command writes a valid SkillRun envelope.

Boundary

This is not a new Python adapter and does not use the SkillRun Python SDK. The python3 action.py command is just a portable executable command for the example. Any language or binary can use the same Level 0 contract when it reads the IPC paths and writes the standard output envelope.