Set a variable from the response to be used in a subsequent step.<img loading="lazy" decoding="async" alt="" width="510" height="200" srcset="https://uptime.com/blog/wp-content/uploads/2020/07/variable-api-510x200.png 510w, https://uptime.com/blog/wp-content/uploads/2020/07/variable-api-570x223.png 570w, https://uptime.com/blog/wp-content/uploads/2020/07/variable-api.png 958w" sizes="(max-width: 510px) 100vw, 510px" data-featurebase-content-key="65f26382d7d0fe8694f00a94/changelog/69a098e990b8c38ccf665f69/019c9b55-4e91-7182-ac58-2443634a6c0a/b64u-MDE5YzliNTUtNGU4Mi03ODc0LWFhZGItNTI4NTZiMTZmNDM1.png" src="https://65f26382d7d0fe8694f00a94.featurebase-attachments.com/c/changelog/69a098e990b8c38ccf665f69/019c9b55-4e91-7182-ac58-2443634a6c0a/b64u-MDE5YzliNTUtNGU4Mi03ODc0LWFhZGItNTI4NTZiMTZmNDM1.png?X-Amz-Expires=3600&amp;X-Amz-Date=20260227T020000Z&amp;X-Amz-Algorithm=AWS4-HMAC-SHA256&amp;X-Amz-Credential=DO801TYC4FCVNNEKURKM%2F20260227%2Ffra1%2Fs3%2Faws4_request&amp;X-Amz-SignedHeaders=host&amp;X-Amz-Signature=8123fa3c0a6c3cc897e3538807e0a4a1da3ee43d0fb5e48a473052cf47f975ae" data-featurebase-content-filename="019c9b55-4e82-7874-aadb-52856b16f435"><a href="https://support.uptime.com/hc/en-us/articles/360001311589-API-Check-Basics#API_Use_Case" target="_blank" rel="noopener noreferrer">See a use case</a> and learn more in our documentation.

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API Variable Support