# Checks API support added for Marketplace integration providers

By Steven Van · 2025-04-30

Testing providers building native Vercel Marketplace integrations can run reliability, performance and Web Vitals checks after every deployment.

Providers building native integrations for the [Vercel](<https://creatorstoolbox.com/tools/vercel>) Marketplace can now use the Checks API, according to a [Vercel announcement](<https://vercel.com/marketplace>) dated 30 April 2025. It lets a provider define and run custom tests and assertions after every deployment, with results shown in the Vercel dashboard.

Vercel lists three kinds of check a testing provider could implement:

- Reliability tests, such as API availability and runtime errors

- Performance tests, such as response time thresholds and load simulation

- Web Vitals, such as layout shift

For developers using those integrations, the aim is to catch real-world issues earlier in their workflow. Vercel also gives providers four best practices:

- Offer minimal or no-configuration solutions, so developers can easily run checks

- Provide a guided onboarding experience from installation to first results

- Display clear, actionable outcomes directly in the Vercel dashboard

- Document ways to extend or customize checks for advanced users

Details are in the Checks API documentation.

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[Original source](<https://vercel.com/marketplace>)

[Read Checks API support added for Marketplace integration providers on Creators Toolbox](<https://creatorstoolbox.com/blog/vercel-checks-api-support-added-for-marketplace-integration-providers>)

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Canonical source: https://creatorstoolbox.com/blog/vercel-checks-api-support-added-for-marketplace-integration-providers