Free for qualifying open-source projects

SchemaLens Team, free for open source

Add schema diff to your CI/CD pipeline, catch breaking database changes in every PR, and get unlimited Team access at no cost.

Apply for Free Team Access Apply via GitHub

No credit card required. The first 3 qualifying projects are auto-approved. See sponsors →

What your project gets

Everything in SchemaLens Team — normally $29/month — at no cost.

🔍

PR Schema Diff Comments

Our GitHub Action comments a human-readable schema diff on every pull request that changes your SQL files.

🛡️

Breaking Change Gate

Block merges that drop columns, rename tables, or change types without explicit review.

👥

Unlimited Team Members

All maintainers and core contributors get Team access with shared workspaces and admin controls.

🔔

Slack / Teams Alerts

Get notified in Slack or Microsoft Teams when schema drift or breaking changes are detected.

📊

Risk Dashboard

A shareable dashboard showing migration risk scores, drift history, and team activity.

⚡

Unlimited API Access

Use the SchemaLens REST API without rate limits for programmatic diffs in your tooling.

How it works

Three steps to free Team access for your open-source project.

Add SchemaLens to your repo

Install the GitHub Action, add a README badge, or link to SchemaLens in your migration docs.

Tell us about your project

Fill out the form below with your repo URL, license, and how SchemaLens helps your contributors.

Get free Team access

We review within 2 business days. The first 3 qualifying projects are approved automatically. Approved projects appear on the sponsors wall.

Eligibility

We approve projects that meet these criteria:

  • Open-source license (OSI-approved: MIT, Apache-2.0, GPL, BSD, etc.)
  • Publicly visible Git repository with active maintenance in the last 6 months
  • Project uses SQL schemas (PostgreSQL, MySQL, SQLite, SQL Server, etc.)
  • Willing to add a SchemaLens badge, GitHub Action, or docs link back to SchemaLens
  • Not a commercial product, agency, or primarily promotional repository

Apply now

Tell us about your project and we'll get back to you within 2 business days.

Must be a public HTTPS repository URL.

Ways to link back

Choose the option that fits your project best.

1. GitHub Action

Add the SchemaLens GitHub Action to your workflow. It comments schema diffs directly on PRs.

2. Schema Health Badge

Add a dynamic schema health badge to your README. It updates automatically as your schema changes.

schema: 12 tables · A (92) schema 12 tables · A (92)
[![Schema Health](https://schemalens.tech/api/schema-badge?url=YOUR_RAW_SCHEMA_URL)](https://schemalens.tech)

3. Docs Link

Mention SchemaLens in your migration or contribution docs. For example: "Review schema changes with SchemaLens before opening a PR."

Frequently asked questions

Is this really free forever?

Yes. Approved open-source projects receive free SchemaLens Team access for as long as they remain eligible and keep the badge or link in place.

Can commercial open-core projects apply?

Projects with a credible open-source core and OSI-approved license are welcome. Purely commercial products or marketing repositories are not eligible.

What if we stop using the badge or Action?

We may ask you to re-add the link. If the project is no longer maintained or the link is removed permanently, the free Team access may be paused.

How many seats do we get?

Unlimited maintainers and core contributors for the approved project. We trust you to use seats for project contributors only.

Do you need access to our code?

No. The GitHub Action only reads SQL files in your public repository during CI runs. The web diff is entirely client-side.