Want to see it before wiring your own repo? Inspect the passing baseline demo PR and the risk regression demo PR in the public Azure ARM review example.
Public example
Use ganakailabs/cloudeval-azure-arm-review-example as a clean public reference repository. It contains nested ARM templates,.cloudeval/config.yaml, a ready-to-copy CloudEval review workflow, and long-lived demo pull requests:
| Demo PR | Expected check | What to inspect |
|---|---|---|
| Passing baseline gates | Green | A passing review with baseline thresholds while the comment still shows CRITICAL posture, validation, cost, and report links. |
| Risk regression | Red | A risky IaC change with blocking gate failures and high-risk posture signals. |
| Cost regression | Red | Five-digit monthly cost estimate, resource cost drivers, and a failing monthly budget gate. |
| Security hardening | Red | Security-focused remediation work that still fails until configured thresholds are satisfied. |
CLOUDEVAL_ACCESS_KEY and CLOUDEVAL_PROJECT_ID secrets. The workflow intentionally skips review until those secrets exist.
What it does (and does not do)
The action runs on your workflow runner, installs the CloudEval CLI (unless you skip install), and calls the same CloudEval API as the browser and CLI using a scoped access key (cev_…).
It does not install the GitHub App, change repository settings, branch rules, or files on its own. It can:
- Run
cloudeval reviewfor the checked-out GitHub repository and linked CloudEval project. - Fail a job when explicit
.cloudeval/config.yamlci.gatesare not met. - Attach workflow artifacts (JSON, summaries, downloaded reports).
- Add PR lifecycle reactions and post/update one result comment per run (same-repo pull requests; fork PRs are often restricted by GitHub token permissions).
mode: review to identify the repository, branch, commit SHA, and dirty working tree state. See the action repo’s full guide for details.
Current vs planned PR capabilities
The GitHub Action path is current for CI review and PR comments. Richer GitHub-native review surfaces are still roadmap work.| Capability | Status | Notes |
|---|---|---|
| GitHub App repository sync | Current | Import and refresh the CloudEval project from a selected repository, branch, and source root. |
| GitHub Actions composite action | Current | Run CloudEval review from a workflow runner with a scoped access key. |
| PR comments | Current | Post or update one review result comment for same-repo pull requests when token permissions allow it. |
CI job failure via .cloudeval/config.yaml gates | Current | Fail the workflow job when configured gates are not satisfied. |
| Workflow artifacts | Current | Upload JSON, Markdown summaries, and report artifacts from the run. |
| GitHub Checks UI annotations | Planned | Native annotations beyond the workflow job result are not the current contract. |
| PR diagram diffs | Planned | Architecture diff visualizations across pull-request changes are roadmap work. |
| Native repo scanning without setup | Planned | Today, use the GitHub App plus action workflow for linked project review. |
Prerequisites
Create a CI access key
In the CloudEval app, open Developer → API & CLI access keys and create a GitHub Actions CI key scoped to the target project. Review mode needs project/report capabilities,
ask:run when AI summaries are enabled, and github:comment when CloudEval should post PR comments through the GitHub App identity. Older keys without github:comment still work, but comments fall back to github-actions[bot].Create or import the CloudEval project
Create or import the project from the GitHub repository through the CloudEval GitHub App. This links the repository, branch, commit provenance, and project.
Add repository secrets
Add
CLOUDEVAL_ACCESS_KEY and, for review/reports, CLOUDEVAL_PROJECT_ID in the consumer repository or environment.Pin the action
Prefer
uses: ganakailabs/cloudeval-action@v1 or a full commit SHA for supply-chain control.PR review workflow
Confirm what review mode runs
mode: review runs the high-level CLI command:review.json and review.md. Use --no-wait only for advanced workflows that
want to submit sync and inspect the job separately. Review output includes an
AI-written PR summary by default; disable it with the action input
ai_summary: "false" if CI must avoid model-generated prose.If the runner workspace has uncommitted changes, the CLI stops with:ignore_dirty: "true" only when your workflow intentionally generates local files before review.Enable PR comment output
When 

For an App-branded PR comment, all three pieces must be true:
post_pr_comment: true, the action reacts to the PR with eyes when
review starts and adds a completion reaction when review finishes (+1 for
pass, confused for failure). The review details are written as one
idempotent result comment after the run has report data.For projects linked through the CloudEval GitHub App, CloudEval posts that
comment with the app installation token so the visible author is the CloudEval
GitHub App and the comment uses the app logo. If the app comment route is not
available or the access key does not include github:comment, the action falls
back to github-actions[bot].

- the CloudEval project was created from or linked to the same GitHub repository
- the CI access key is scoped to that project and includes
github:comment - the workflow passes
project_id,post_pr_comment: true, and haspull-requests: writeplusissues: write
Config-driven gates
Choose enforcement behavior
When
ci.gates is missing, review mode returns a warning rather than failing by default. When gates exist, enforcement: block_pull_request fails the job on gate failures. Use enforcement: comment_only to publish the review without blocking merges while the team tunes thresholds. Existing required, warn, overall_score_min, pillar_score_min, fail_on_high_risk, fail_on_validation_errors, and max_monthly_cost keys are still accepted for compatibility.Read the PR comment result
The PR comment separates the configured gate from observed posture:
Overall is the gate result from your thresholds. CRITICAL is the observed architecture posture. A PR can show both when thresholds are intentionally permissive, validation/high-risk failures are disabled, or the cost budget is high.Require the workflow check
To block merges, configure GitHub branch protection or a repository ruleset that requires the workflow job running CloudEval review. GitHub Actions cannot prevent someone from clicking Approve on a pull request; the required status check is what prevents merge.
Use deterministic drilldowns
Review comments include deterministic drill-downs for:
- Open in CloudEval links for the project preview, architecture report, cost report, validation details, PDF download, workflow run, and review artifacts
- Well-Architected overall and pillar scores
- cost threshold, estimated monthly cost, resource-cost pie chart, savings impact chart, and compact service-cost table
- policy check and unit-test failures
- optional AI summary, generated with
ai_summary_mode: askorai_summary_mode: agent, split into a short summary plus collapsible details
Prompt-based merge gate
Switch to gate mode
Use
mode: gate, set gate_jq to a jq expression that yields one number from the CLI JSON (for example .score), and set gate_threshold plus optional gate_operator (ge, lt, eq, …).Set PR comment permissions
Enable
post_pr_comment: true only when the job has pull-requests: write plus issues: write and the PR is from the same repository (not a fork), unless you use a different token strategy. These permissions are required for PR lifecycle reactions and for the github-actions[bot] comment fallback. GitHub App-linked projects can post the review comment through the CloudEval App identity when the access key includes github:comment.Reports on a schedule
Setmode: nightly (or reports) with project_id, configure reports_type, and optionally reports_wait so the job waits for report jobs to finish before download.
Why reviewers can trust the output
Every PR review should make the source and evidence path visible enough for a reviewer to check the result without guessing.| Trust signal | Where it appears |
|---|---|
| Source project | PR comment source section and Open in CloudEval links |
| Repository, ref, and commit | PR comment source section plus workflow metadata |
| Workflow run | PR comment source section, GitHub Actions summary, and artifacts |
| Evidence | Architecture report, cost report, validation details, policy checks, and report drilldowns |
| Next action | Gate result, failed checks, high-risk findings, cost threshold status, and optional AI summary |
Reusable workflow
The action repository ships aworkflow_call workflow so other repos can call one shared definition. Pass action_repository and action_ref if you fork. See cloudeval-reusable.yml in the action repo.
Configuration reference
Every input and output is documented in:action.ymlin ganakailabs/cloudeval-action (source of truth)- docs/github-action.md (narrative guide)
Related docs
- Automate evaluations with the CLI — same CloudEval service; use the action when you want a packaged GitHub-native path.
- GitHub repository sync — install the CloudEval GitHub App and keep project files synced from GitHub.
- IaC project config — configure visualization source and CI gates.
- Use the CLI — local install and
cloudeval loginfor interactive work.


