Supported stacks

Tenbi's runner installs a project's toolchain on demand at workspace prep, then runs the AI phases against it. A repo whose stack the runner can't execute is stopped before any AI spend (see Stack unsupported). This page lists what's executable today.

Matrix

Stack	Status	How the version is chosen
JavaScript / TypeScript (npm/Node)	Supported	engines.node, else .nvmrc, else latest LTS. Window Node 12–26.
Python	Beta	.python-version pin honored; else requires-python (treated as a floor → newest supported version); else latest stable. Window 3.8–3.13.
.NET · Java · Go · Ruby · PHP · Rust	Roadmap	— (fails preflight)

Polyglot workspaces work: a repo needing both Node and Python resolves both.

Python (Beta)

Python is available to try. Details worth knowing:

• Version selection. A .python-version file is a real pin — Tenbi runs that minor. A requires-python in pyproject.toml is read as a compatibility floor, not a preference: Tenbi picks the newest supported version that satisfies it (so >=3.9 runs on 3.13, not 3.9). A Python repo that declares neither runs on the latest stable version. The supported window is 3.8–3.13.
• Isolated environment. Tenbi sets up a workspace virtual environment before the run, so pip install … and tools like pytest just work — no manual venv step, and the command lands on PATH.
• Package managers. pip (bundled) and uv are available.
• Poetry and PDM aren't supported yet. A repo with a poetry.lock or pdm.lock stops early with a clear message rather than half-running — those tools manage their own environments. Remove the lock file to use the standard pip path, or wait for support.
• Beta caveat. The supported version range and tooling may expand. Nothing here changes how existing JavaScript/TypeScript projects run.