feat(pi): add Cloud Code Review mode and rename Cloud to Cloud PR by BillLeoutsakosvl346 · Pull Request #5577 · simstudioai/sim

BillLeoutsakosvl346 · 2026-07-10T22:58:55Z

Summary

Rename the Pi Cloud UI label to Cloud PR (stored mode id stays cloud for backward compatibility)
Add Cloud Code Review mode that checks out an existing PR in an E2B sandbox and posts a GitHub review with optional inline comments
Extend github_create_pr_review to support an inline comments[] array
Extract shared E2B helpers into cloud-shared.ts for Cloud PR and Cloud Code Review

Test plan

Unit tests pass for pi-handler, cloud-backend, cloud-review-backend, keys, and create_pr_review
Cloud PR still clones, edits, pushes, and opens a PR
Cloud Code Review on a real PR posts a summary review and at least one inline comment
Local mode is unchanged
Cloud options only appear when NEXT_PUBLIC_E2B_ENABLED is set

Made with Cursor

gitguardian · 2026-07-10T22:58:58Z

️✅ There are no secrets present in this pull request anymore.

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vercel · 2026-07-10T22:59:00Z

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
docs	Ready	Preview, Comment	Jul 10, 2026 11:15pm

greptile-apps · 2026-07-10T23:01:08Z

Greptile Summary

This PR adds Cloud Code Review support for the Pi block. The main changes are:

Cloud mode is renamed in the UI to Cloud PR.
A new Cloud Code Review mode checks out an existing PR in E2B.
The Pi handler routes Cloud Code Review runs through a new backend.
GitHub PR review creation now accepts inline comments.
Shared E2B helper code is extracted for cloud backends.
Docs and tests are updated for the new mode.

Confidence Score: 4/5

The Cloud Code Review submission path needs fixes before merging.

A PR update during the agent run can make the backend submit against stale commit metadata.
Invalid agent-generated line ranges can make GitHub reject the entire review.
The mode wiring, key handling, and shared cloud helper imports otherwise look consistent with the changed code.

apps/sim/executor/handlers/pi/cloud-review-backend.ts

Important Files Changed

Filename	Overview
apps/sim/executor/handlers/pi/cloud-review-backend.ts	Adds the Cloud Code Review backend, including PR checkout, prompt/context setup, review JSON parsing, and GitHub review submission.
apps/sim/tools/github/create_pr_review.ts	Extends the GitHub create-review tool so it can submit inline review comments with a review body.
apps/sim/executor/handlers/pi/pi-handler.ts	Adds Cloud Code Review mode validation, input parsing, backend dispatch, and output mapping.
apps/sim/executor/handlers/pi/keys.ts	Treats Cloud Code Review as a cloud sandbox mode for BYOK-only model key resolution.
apps/sim/blocks/blocks/pi.ts	Adds Cloud Code Review fields and outputs while keeping the existing Cloud PR mode id for compatibility.
apps/sim/executor/handlers/pi/cloud-shared.ts	Moves shared E2B paths, timeouts, abort handling, marker parsing, and git-secret scrubbing into a common module.

Sequence Diagram

%%{init: {'theme': 'neutral'}}%%
sequenceDiagram
  participant Sim as Pi handler
  participant GH as GitHub API tools
  participant E2B as E2B sandbox
  participant Pi as Pi CLI

  Sim->>GH: Fetch PR metadata and files
  GH-->>Sim: PR head SHA and diff context
  Sim->>E2B: Clone and fetch PR head
  E2B-->>Sim: Checked-out head SHA
  Sim->>E2B: Write prompt and PR context
  E2B->>Pi: Run review agent
  Pi-->>E2B: Write pi-review.json
  E2B-->>Sim: Return review JSON
  Sim->>GH: Submit PR review with body and comments
  GH-->>Sim: Review URL or creation error

%%{init: {'theme': 'base', 'themeVariables': {"darkMode": true, "background": "#0d1117", "primaryColor": "#21262d", "primaryTextColor": "#e6edf3", "primaryBorderColor": "#8b949e", "lineColor": "#8b949e", "textColor": "#e6edf3", "edgeLabelBackground": "#161b22", "actorBkg": "#21262d", "actorBorder": "#8b949e", "actorTextColor": "#e6edf3", "actorLineColor": "#8b949e", "signalColor": "#8b949e", "signalTextColor": "#e6edf3", "noteBkgColor": "#373320", "noteBorderColor": "#d4a72c", "noteTextColor": "#f0e6c0", "labelBoxBkgColor": "#21262d", "labelBoxBorderColor": "#8b949e", "labelTextColor": "#e6edf3", "loopTextColor": "#e6edf3", "activationBkgColor": "#30363d", "activationBorderColor": "#8b949e"}}}%%
sequenceDiagram
  participant Sim as Pi handler
  participant GH as GitHub API tools
  participant E2B as E2B sandbox
  participant Pi as Pi CLI

  Sim->>GH: Fetch PR metadata and files
  GH-->>Sim: PR head SHA and diff context
  Sim->>E2B: Clone and fetch PR head
  E2B-->>Sim: Checked-out head SHA
  Sim->>E2B: Write prompt and PR context
  E2B->>Pi: Run review agent
  Pi-->>E2B: Write pi-review.json
  E2B-->>Sim: Return review JSON
  Sim->>GH: Submit PR review with body and comments
  GH-->>Sim: Review URL or creation error

_{Reviews (1): Last reviewed commit: "feat(pi): add Cloud Code Review mode and..." | Re-trigger Greptile}

Introduce a third Pi mode that reviews an existing GitHub PR in an E2B sandbox and posts a structured review with optional inline comments. Keep the stored cloud id for backward compatibility, extend github_create_pr_review for inline comments, and harden review submission against stale SHAs and invalid comment payloads. Co-authored-by: Cursor <cursoragent@cursor.com>

cursor

Cursor Bugbot has reviewed your changes using default effort and found 2 potential issues.

^{❌ Bugbot Autofix is OFF. To automatically fix reported issues with cloud agents, enable autofix in the Cursor dashboard.}

^{Reviewed by Cursor Bugbot for commit c8d7b57. Configure here.}

cursor · 2026-07-10T23:13:19Z

+      const comment = item as Record<string, unknown>
+      if (typeof comment.path !== 'string' || !comment.path.trim()) continue
+      if (typeof comment.body !== 'string' || !comment.body.trim()) continue
+      if (!isPositiveInt(comment.line)) continue


String line numbers silently dropped

Low Severity

parseReviewFindings only accepts line values that are already JavaScript numbers. If the agent writes valid JSON with numeric strings (e.g. "line": "12"), those inline comments are skipped without error while the summary review still posts, so commentsPosted can be zero despite the agent believing it left inline notes.

^{Reviewed by Cursor Bugbot for commit c8d7b57. Configure here.}

icecrasher321 · 2026-07-11T03:14:07Z

@BillLeoutsakosvl346 the goal is for the agent to leave comments on your PR in github directly since it has all the credentials and everything similar to Greptile or Bugbot

BillLeoutsakosvl346 · 2026-07-13T18:11:38Z

Coding agent demo:

Screen.Recording.2026-07-13.at.11.03.19.AM.mp4

cursor Bot reviewed Jul 10, 2026

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Comment thread apps/sim/executor/handlers/pi/cloud-review-backend.ts

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vercel Bot deployed to Preview July 10, 2026 23:03 View deployment

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BillLeoutsakosvl346 force-pushed the feature/pi-cloud-code-review branch from 2760fad to c8d7b57 Compare July 10, 2026 23:11

cursor Bot reviewed Jul 10, 2026

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feat(pi): add Cloud Code Review mode and rename Cloud to Cloud PR#5577

feat(pi): add Cloud Code Review mode and rename Cloud to Cloud PR#5577
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Summary

Test plan

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greptile-apps Bot commented Jul 10, 2026

Greptile Summary

Confidence Score: 4/5

Important Files Changed

Sequence Diagram

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String line numbers silently dropped

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BillLeoutsakosvl346 commented Jul 13, 2026

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