# Happo (happo.io)

Compares screenshots of UI across browsers and devices on each pull request to flag visual, layout and contrast changes.

- Atlas card: https://inite.ai/en/atlas/happo.io
- Site: https://happo.io
- For: Frontend teams reviewing UI changes in pull requests across browsers and native apps.
- Categories: productivity
- Use not measured/100 · alive 100/100

## Used for

- Catch unintended visual changes in pull requests before merge
- Compare UI diffs across Chrome, Firefox, Safari and iOS
- Flag accessibility contrast violations during pull request review

## Price

- from 149 USD/month, free plan (read 2026-11-03 on https://happo.io/pricing)

## For developers

- MCP server: io.happo/mcp (namespace; auth on 2026-11-03)
- Status page: https://happo.statuspage.io
- Read 2026-11-03

## MCP server, measured daily

Server: https://happo.io/api/mcp, checked every day since 2026-11-03 (2 checks).

- Answered: measuring, 2 daily checks so far
- Median first answer: 63 ms
- Sign-in: OAuth (the client signs the user in)
- Method: https://inite.ai/en/atlas/mcp/report

## Your data

- Certifications stated: none
- Read 2026-11-03

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Source: INITE Atlas, https://inite.ai/en/atlas/happo.io. JSON: https://inite.ai/api/atlas/happo.io. MCP: https://inite.ai/api/mcp (atlas_lookup).