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Add temporary Preview environment canary endpoint - #8449

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oss-oncall-canary-preview-test
Draft

Add temporary Preview environment canary endpoint#8449
vladi99 wants to merge 1 commit into
mainfrom
oss-oncall-canary-preview-test

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@vladi99

@vladi99 vladi99 commented Aug 5, 2026

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Summary

  • add a temporary API endpoint for a controlled Vercel Preview environment test
  • read only OSS_ONCALL_CANARY_SENSITIVE
  • return the synthetic canary value and its SHA-256 digest to demonstrate that Preview application code receives plaintext
  • never enumerate or access other environment variables

This is a draft test PR and must not be merged. The canary contains no credential or production data.

Test plan

  • yarn prettier --check pages/api/oss-oncall-canary.ts
  • yarn tsc --noEmit
  • verify the Preview endpoint returns the synthetic canary and matching digest

Cleanup

After the test, close this PR and delete the branch, Preview deployment, and canary variable.

@vercel

vercel Bot commented Aug 5, 2026

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The latest updates on your projects. Learn more about Vercel for GitHub.

Project Deployment Actions Updated (UTC)
torchci Ready Ready Preview Aug 5, 2026 8:07pm

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@meta-cla meta-cla Bot added the CLA Signed This label is managed by the Facebook bot. Authors need to sign the CLA before a PR can be reviewed. label Aug 5, 2026
@vladi99
vladi99 force-pushed the oss-oncall-canary-preview-test branch from a5c3655 to 14a1a78 Compare August 5, 2026 19:54
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