Cassis CLI

Run Cassis actions from your CI pipelines:

• cassis ontology check validates the ontology files in your repository with the exact same checks as the Cassis GitHub PR check (YAML parsing, round-trip, import validation) — so you can gate merges in any CI system, not just GitHub.
• cassis ontology fmt rewrites the ontology files in canonical form (think black/gofmt for the ontology), so hand or agent edits pass the round-trip check.
• cassis ontology upload uploads the ontology files to a Cassis project (full replace) and, by default, publishes them immediately as a new version — so a merge to your main branch can go live in one CI step.
• cassis ontology pull downloads the project's unpublished ontology into your repository checkout (full sync — stale local YAML files are pruned), so you can start editing from the current state, or bootstrap a repo that isn't git-synced (e.g. Bitbucket).
• cassis eval run runs the project's eval suite against your local ontology files (scored in-memory — nothing is pushed to Cassis) and prints per-question results, so you can test the changes on your git branch before merging.

Install

pip install cassis-cli

Setup

1. Create an API key in Cassis under Organization settings → API keys (keys start with sk-k6-).
2. Store it as a CI secret and expose it as CASSIS_API_KEY.
3. For pull, upload and eval run: find the project ID (UUID) in the project's URL and expose it as CASSIS_PROJECT_ID (or pass --project).

Usage

# From the root of a repository synced with Cassis (contains the ontology export directory, cassis/ by default):
cassis ontology check

# Or point at the checkout explicitly:
cassis ontology check /path/to/checkout

# Download the project's unpublished ontology into the checkout (full sync;
# review with git diff — pass --no-prune to keep local files it would delete):
cassis ontology pull --project 019f0000-0000-7000-8000-000000000000

# Upload the ontology to a project and publish it immediately:
cassis ontology upload --project 019f0000-0000-7000-8000-000000000000

# Upload without publishing (the tree becomes the project's unpublished ontology, to review in Cassis):
cassis ontology upload --project ... --no-publish

# Label the published version:
cassis ontology upload --project ... --label "release 1.2"

# Machine-readable output:
cassis ontology check --json
cassis ontology pull --project ... --json
cassis ontology upload --project ... --json
cassis eval run --project ... --json

# Run the eval suite against the local ontology files and wait for results
# (the run is labelled with your git branch name in the Evals page):
cassis eval run --project ...

# Run against an existing Cassis ontology branch, or the unpublished ontology:
cassis eval run --project ... --branch feature-x

# Start the run and return immediately (poll in the webapp):
cassis eval run --project ... --no-wait

Configuration (flags take precedence over env vars):

cassis eval run also accepts --label (run label in the Evals page; defaults to the branch name from the CI environment or the local git checkout; rejected with --branch, whose runs are labelled with the branch name), --wait/--no-wait, --poll-interval (5 s), --timeout (30 min — the run keeps going server-side if the CLI stops waiting), and Ctrl-C cancels the run (exit 130). It prints a deep link to the run's page in the Evals UI; --app-url / CASSIS_APP_URL overrides the link's base URL when the webapp is not served from the API host (defaults to --api-url).

Formatting

# Rewrite the ontology files in canonical form (in place)
cassis ontology fmt

# CI mode: fail (exit 1) if any file is not canonical, write nothing
cassis ontology fmt --check

fmt uses the exact serializer the validation round-trip compares against, so a formatted tree cannot fail that stage. Formatting does not run import validation — check remains the pass/fail gate for semantic problems (dangling references, incomplete metrics).

Review the diff before committing: canonical form keeps exactly the fields Cassis understands. Unknown fields (typos) are dropped — the rewrite makes them visible in git diff instead of losing them silently at sync time. Files with duplicate YAML keys are rejected (fix them by hand: the formatter can't know which value you meant).

Exit codes

Commands that send the local tree (check, upload, eval run) accept up to 2000 YAML files / 5 MB total — far above real ontologies (a few hundred small files). Beyond that the CLI fails fast with exit 2 before uploading anything; double-check --base-path if you hit it.

upload replaces the project's entire ontology with the uploaded tree. A never-published project always goes live immediately on first upload (even with --no-publish), matching imports from the Cassis app. Publishing is idempotent: re-uploading content identical to the published version reports that version instead of creating a new one, so re-running the CI job on unchanged files is a no-op.

GitHub Actions example

jobs:
  ontology-check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - run: pip install cassis-cli
      - run: cassis ontology check
        env:
          CASSIS_API_KEY: ${{ secrets.CASSIS_API_KEY }}

  ontology-eval:
    runs-on: ubuntu-latest
    if: github.event_name == 'pull_request'
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - run: pip install cassis-cli
      - run: cassis eval run
        env:
          CASSIS_API_KEY: ${{ secrets.CASSIS_API_KEY }}
          CASSIS_PROJECT_ID: ${{ vars.CASSIS_PROJECT_ID }}

  ontology-publish:
    runs-on: ubuntu-latest
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-python@v5
        with:
          python-version: "3.12"
      - run: pip install cassis-cli
      - run: cassis ontology upload
        env:
          CASSIS_API_KEY: ${{ secrets.CASSIS_API_KEY }}
          CASSIS_PROJECT_ID: ${{ vars.CASSIS_PROJECT_ID }}

GitLab CI example

ontology-check:
  image: python:3.12-slim
  script:
    - pip install cassis-cli
    - cassis ontology check
  variables:
    CASSIS_API_KEY: $CASSIS_API_KEY

ontology-eval:
  image: python:3.12-slim
  rules:
    - if: $CI_PIPELINE_SOURCE == "merge_request_event"
  script:
    - pip install cassis-cli
    - cassis eval run
  variables:
    CASSIS_API_KEY: $CASSIS_API_KEY
    CASSIS_PROJECT_ID: $CASSIS_PROJECT_ID

ontology-publish:
  image: python:3.12-slim
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
  script:
    - pip install cassis-cli
    - cassis ontology upload
  variables:
    CASSIS_API_KEY: $CASSIS_API_KEY
    CASSIS_PROJECT_ID: $CASSIS_PROJECT_ID