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Use the CloudEval GitHub Action when you want CloudEval review results inside GitHub Actions without hand-rolling install and auth steps.
Use the CloudEval GitHub App for repository sync into CloudEval. Use the GitHub Action for CI review, merge gates, PR comments, and report artifacts after a CloudEval project exists.
Before connecting a private repository, read Data and model boundaries to understand how CloudEval imports GitHub files, stores the project snapshot, and scopes AI-assisted review today.
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.

Video walkthrough: automated pull-request review for infrastructure-as-code changes in GitHub.

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: Use the public PRs when you want to inspect the workflow without connecting Azure or uploading private source. Fork the repo, install the CloudEval GitHub App on the fork, create a CloudEval project from it, then add 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 review for the checked-out GitHub repository and linked CloudEval project.
  • Fail a job when explicit .cloudeval/config.yaml ci.gates are not met.
  • Attach workflow artifacts (JSON, summaries, downloaded reports).
  • Attach review/review.pdf when .cloudeval/config.yaml enables PDF output.
  • 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).
Checked-out code is used by mode: review to identify the repository, branch, commit SHA, and dirty working tree state. See the action repo’s full guide for details. For GitHub-backed projects, the action works against the CloudEval project snapshot created by the GitHub App sync path. The current public Pro path stores that source snapshot and generated evidence in CloudEval-managed storage. Planned Team and Enterprise controls include private deployment, customer-managed storage, custom LLM gateways, and bring-your-own model key options; those are not self-serve Pro capabilities today.

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.

Prerequisites

1

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].
2

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.
3

Add repository secrets

Add CLOUDEVAL_ACCESS_KEY and, for review/reports, CLOUDEVAL_PROJECT_ID in the consumer repository or environment.
4

Pin the action

Prefer uses: ganakailabs/cloudeval-action@v1 or a full commit SHA for supply-chain control.
5

Require the check

If CloudEval should block merges, require the workflow job in a GitHub branch protection rule or ruleset.

PR review workflow

1

Add the review workflow

GitHub Actions run page showing a completed CloudEval review job with result summary, workflow run metadata, artifact, and PR comment status

A CloudEval review workflow produces a GitHub Actions job summary, downloadable review artifacts, and a linked PR comment.

2

Confirm what review mode runs

mode: review runs the high-level CLI command:
By default the command waits for GitHub sync and report refresh before writing 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:
Set ignore_dirty: "true" only when your workflow intentionally generates local files before review.
3

Enable PR comment output

When 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].
GitHub pull request comment by the CloudEval GitHub App showing overall review result, source provenance, AI summary, and collapsible drilldowns

When the project is linked to the GitHub App and the access key includes github:comment, the PR review appears as one CloudEval App comment with source provenance.

Expanded CloudEval PR comment showing the AI summary and AI details section

The AI summary appears directly inside the PR comment, with longer reasoning available in the expandable details section.

For an App-branded PR comment, all three pieces must be true:
  • 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 has pull-requests: write plus issues: write
4

Inspect review drilldowns

Expanded CloudEval PR comment showing Well-Architected pillar ratings and monthly cost drilldowns

Review drilldowns expand in place for Well-Architected pillar scores and monthly cost breakdowns.

Expanded CloudEval PR comment showing validation results and architecture signals

Validation and architecture signals stay in the same review comment so reviewers can check failures and graph context without leaving GitHub.

Config-driven gates

1

Add ci.gates

Add ci.gates to .cloudeval/config.yaml when the review should fail the job:
2

Attach a PDF evidence packet

Keep upload_artifacts: true in the workflow and enable ci.review.outputs.pdf.enabled in .cloudeval/config.yaml.
The PR comment keeps the CloudEval-hosted PDF badge for the latest hosted export. The GitHub Artifacts badge points to the workflow artifact for that run, which includes review/review.pdf, review/review.md, and review/review.json, even when the review gate fails.Supported PDF parameters:
3

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.
4

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.
5

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.
6

Use deterministic drilldowns

Review comments include deterministic drill-downs for:
  • Open in CloudEval links for the project preview, architecture report, cost report, validation details, hosted 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: ask or ai_summary_mode: agent, split into a short summary plus collapsible details
  • optional review/review.pdf in the workflow artifact when ci.review.outputs.pdf.enabled is true

Prompt-based merge gate

1

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, …).
2

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.
3

Add the gate workflow

Reports on a schedule

Set mode: 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.

Reusable workflow

The action repository ships a workflow_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:
Last modified on July 3, 2026