Greptile CLI reviews committed branch changes and ignores uncommitted edits. Macroscope includes work in progress in its frozen snapshot. Both offer repository-aware review, but they see different inputs during an agent repair cycle.
| Decision | Greptile | Macroscope |
|---|---|---|
| Review scope | Repository-aware PR and branch review; Base, Plus and Apex use 1, 3 and 10 credits. | GitHub reviews and local or agent-driven checks. |
| Local review input | CLI reviews committed branch changes; its documented workflow ignores uncommitted changes. | MIT local CLI reviews working-tree and branch changes. |
| Custom requirements | Repository instructions and cascading directory-specific standards. | Markdown agent instructions, path selection and configurable check-run agents. |
| License and service | Commercial review service. | MIT local CLI; commercial hosted analysis. |
| Official references | Greptile sources | Macroscope sources |
Make a committed regression, repair it without committing and run both review workflows. Verify which snapshot was inspected. Separate Macroscope CLI usage from its GitHub diff-size rate when recording cost.
Pro: $30/seat/month with 50 credits/seat; extra credits $1 each. Starter is free for one active developer.
Pro subscription floor before extra credits. Base, Plus and Apex reviews consume 1, 3 and 10 credits respectively. The free Starter tier covers PR reviews; CLI reviews need an active trial or paid plan. Included credits and flex overages are per active author, not pooled across the team.
GitHub Balanced review: 5¢/KB with a 10 KB minimum. Other modes: 2.5–20¢/KB. No seat fees.
GitHub diff-size pricing is separate from CLI/agent model cost plus 5%. Free monthly credits and welcome credit are available. No fixed per-PR total is assumed.
Subscription amounts are plan floors or quoted allowances. Repeated reviews, selected effort, provider charges and exclusions can change the bill. Equal review counts do not establish equal analysis scope.
A third option for the agent’s next edit
Perch gives the agent a direct working-file check for the repaired requirement. Choose it when checking that saved rule before another commit is the main task.
For an agent that repeatedly removes tenant authorization from a database update, save the requirement as a named Perch rule:
- name: tenant-scoped-update
where: "orders.py"
ensure: >-
The cancellation UPDATE must constrain tenant_id to actor.tenant_id
before changing the order. An id-only or owner-only update breaks
this requirement.This requirement comes from the FastAPI tenant-authorization recipe, which includes the implementation, deliberate regression and captured Perch checks. The same named check can run against the working file after the next agent edit. Perch working-file checks support selecting rules directly; rule selectors cover project, file and method scope.
npm install -g @lakeday/perch
perch login
perch setup claude-code
# Or choose: perch setup codex
# Or choose: perch setup cursorUse the setup command for your coding agent. Download the focused pack without replacing existing files:
curl -fL 'https://reporules.fyi/fastapi/tenant-cancellation/rule-pack.zip' -o tenant-rule.zip
unzip -n tenant-rule.zip
perch check orders.py --rules tenant-scoped-update --json
# Repair the reported finding after the agent edit.
perch check orders.py --rules tenant-scoped-update --jsonKeep your existing root perch.yaml. The ZIP adds its focused rule under .perch/rules/; unzip -n preserves existing files. Review and adapt the selector and application path before running it in your repository. Run the saved check after an edit, repair any finding, and repeat the identical check alongside application regression tests.
Download the tenant-authorization rule pack · Inspect pack contents and agent task
Perch charges 10¢ per 1,000 fresh rule checks, with no developer seat fees. Cached unchanged checks are free. About 50¢ per mid-sized PR is a rounded estimate for approximately 150 methods read at the captured September–October 2026 density of 34 questions per method; the unrounded example is 51¢. A single named-rule check is a different scope. Team workload calculations show the assumptions.
The Perch CLI is MIT licensed; hosted analysis is paid and relevant source is sent to the configured model service. Fresh model judgments can vary. Unchanged requests can reuse cached results.
This article compares documented product workflows and terms. The public evaluation materials include captured Perch requirement checks; authenticated CodeRabbit and Greptile runs remain unscored. They do not establish a measured accuracy ranking between these tools.
Reviewed October 14, 2026. Unverified features are marked as unverified rather than treated as absent. Current terms and actual trial results should determine a purchase.