continuum

Change impact from Party's Continuum, for people and coding agents: what a change reaches, how risky it is, which tests reach it, and what no test reaches. Continuum keeps a dependency graph of each repository current as its default branch changes; this CLI asks it about your checkout.

pip install party-continuum        # or: brew install maitai-inc/continuum/continuum
continuum login                    # a browser code; saves a revocable token

Before an edit:

continuum dependents billing/charge.py::charge --depth 2   # what depends on it
continuum impact --plan charge --change signature          # the reach of a planned change

After an edit (the working tree against the default branch):

continuum impact      # reach, impact and risk grades, and what drives them
continuum tests       # every test that reaches the change, with commands to run them
continuum untested    # reached code that no test reaches: add tests here
continuum explain api/refunds.py::refund   # why the change reaches it

Every command takes --json. --repo owner/name overrides the checkout's GitHub origin, and --base / --head choose what to compare.

Impact and risk are separate. Impact is how much behavior the change can reach. Risk is how much of that no test would notice: reached code no test reaches, code still using something the change removes, and changes Continuum cannot see through. A wide, well-tested change is high impact and low risk; a small change to untested code is the reverse. Both are graded against the repository's own recent changes.

What it sends. The paths of your changed files and the contents of changed text files (at most 4 MB); never other files, and nothing unless you run a command. The graph lives with Continuum, so answers take about a second.

Tokens. continuum login saves a token that reads Continuum and nothing else; logging in again or using it keeps it alive, and continuum logout revokes it. For CI and agent Environments, create a fixed token and set it as CONTINUUM_TOKEN:

continuum token create --name "skipper Environment" --repo maitai-inc/skipper --days 90
continuum token list
continuum token revoke <id>

Requirements: Python 3.11+ and git. Continuum is for members of the Party organization; CONTINUUM_URL points the CLI at another Party server.