Canva app signature verification and test credentials before submit
Get request-signature verification working and prepare test credentials before review so the submission does not stall on preventable access gaps.
Why this can grow a startup
Review friction kills marketplace momentum before the listing ever goes live. Canva blocks submission when some automated checks fail, including signature-verification support, and it asks for integration documentation plus test credentials when third-party authentication is involved. That turns review prep into a growth job. If the team cannot get a reviewer through the real experience quickly, the shelf stays closed while the launch plan keeps aging.
Company example
Canva's submission docs say apps must support signature verification before they can be submitted, and that apps using third-party authentication require documentation plus test credentials in the support ticket after submission.
Source and metric
Source: Canva Extensions Docs: Submit a public app for review
Submission is blocked until required automated checks pass, and Canva asks for third-party auth docs plus test credentials after submission.
When to use it
Use this when Marketplaces, Developer Experience, Trust is relevant to submission readiness, signature verification, test credentials and you can run a bounded test with a low budget.
When not to use it
Do not use it as a substitute for customer evidence, a clear owner, or a measurable stop condition. Local platform rules and market behavior still need checking.
Founder checklist
- Read Canva Extensions Docs: Submit a public app for review and identify what is directly supported.
- Choose one channel context: Marketplaces, Developer Experience, Trust.
- Define the test around Submission is blocked until required automated checks pass, and Canva asks for third-party auth docs plus test credentials after submission..
- Set an owner, evidence window, and stop condition before launch.
Explore the context
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Choose product surfaces that compound distribution without hiding weak activation or retention.