Automated product review for every pull request to prevent product drift in AI-written code.
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Tracked since2026
The Bottom Line
Entry price
Free, no paid tier
Biggest pro
Prevents costly product drift, especially with AI-generated code.
Biggest con
Requires product specifications to be well-defined and maintained in GitHub.
TL;DR - Prelint
- Automatically reviews pull requests against product specifications.
- Prevents product drift in AI-generated code across various dimensions.
- Enforces product intent and provides answers to product questions without interrupting engineers.
Pricing: Free forever
Best for: Individuals & startups
What is Prelint?
Prelint is a tool designed to prevent "product drift" in code, especially code generated by AI. It automatically reviews every pull request against an organization's product specifications, identifying misalignments before they are shipped. This helps ensure that AI-generated code adheres to business logic, compliance requirements, tooling standards, domain language, scope, and strategic goals.
The platform aims to provide continuous feedback, keeping AI agents iterating in the correct direction and preventing errors from compounding over time. By integrating product specs directly into GitHub, Prelint enforces product intent automatically, catching inconsistencies and conflicts without requiring manual meetings or interrupting engineers. It also provides grounded answers to product questions, allowing engineers to stay in flow.
Pros & Cons
Pros
- Prevents costly product drift, especially with AI-generated code.
- Automates product review, reducing manual effort and potential human error.
- Ensures compliance and consistency with established product rules.
- Keeps engineers in flow by providing answers to product questions directly.
- Cost-effective with a pay-per-review model and free credits.
Cons
- Requires product specifications to be well-defined and maintained in GitHub.
- Teams need to adapt to a new review process for product-level checks.
- Reliance on the accuracy and completeness of the provided product specs.
Key Features
Automated product review for pull requestsChecks against product specifications stored in GitHubIdentifies misalignment in business logic, compliance, tooling, domain language, scope, and strategyDetects contradictions between specs, conflicting technology choices, and duplicated effortProvides inline findings and summary comments on pull requestsAnswers product questions based on specs without interrupting engineersSupports continuous feedback for AI agentsFree for open-source projects
Pricing Plans
Pricing checked Sep 8, 2026
Pay-as-you-go
$1 / completed review
- No seats, no subscription, no minimums
- Start with $10 in free credits
- Credits never expire
- Auto recharge on by default, fully under your control
- Set monthly limits to cap your spend
- Real time balance and burn down in your dashboard
- Open source projects are free
Is Prelint worth the price?
85/100
The 'Pay-as-you-go' model at $1 per completed review is fair and transparent, offering excellent flexibility without commitment.
It's particularly generous with $10 in free credits and free access for open-source projects. This pricing is ideal for individual developers or small teams with unpredictable review needs.
Reviews
$99Free with your review
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Prelint FAQ
How does Prelint prevent AI code from drifting from product intent?
Prelint reviews every pull request against your product specifications stored in GitHub. It identifies discrepancies in areas like business logic, compliance, infrastructure choices, and strategic alignment, providing feedback before the code is merged. This ensures AI-generated code adheres to your intended product vision.
What specifically constitutes a 'completed review' for billing purposes?
A completed review is charged $1 only when it finishes and posts findings (or 'no findings') on a pull request. This includes spec checks, decision compliance, inline findings, and the summary comment. Failed, canceled, or timed-out reviews are not charged.
Can Prelint help answer product-related questions for engineers without requiring stakeholder meetings?
Yes, Prelint allows anyone to ask product questions and receive grounded answers directly from your product specifications. This helps engineers stay in their workflow and allows AI agents to continue iterating without waiting for sync-ups or clarifications from product managers.
How does Prelint handle re-reviews for pull requests with new commits or force pushes?
Each completed review, including re-reviews triggered by new commits or force pushes, is billed at $1. However, pending runs that are canceled because newer commits arrive are not charged.
What types of product drift does Prelint specifically address?
Prelint addresses six key types of product drift: Business Logic (e.g., incorrect pricing changes), Compliance (e.g., data storage violations), Tooling & Infrastructure (e.g., introducing unapproved dependencies), Domain Language (e.g., inconsistent terminology), Scope Creep (e.g., building unrequested features), and Strategic Drift (e.g., off-roadmap development).
Are there any specific types of commits or repositories that are exempt from charges?
Yes, reviews on public open-source repositories are free. Additionally, commits made by CI bots such as Dependabot, Renovate, GitHub Actions, or Snyk bot never trigger reviews and therefore incur no charges.
Source: prelint.com