VAPI•8mo ago

Missing JWT documentation

I'm trying to figure out how I can use a JWT with the Web SDK, but the documentation links to a 404. Is there anywhere I can find that JWT documentation?

Web SDK | Vapi

wispy-oliveOP•5/19/25, 5:21 PM

For more context - I'm able to successfully use a JWT signed with a private API key, but when I try to use the same JWT encoding logic for a "public" tagged JWT, I get a 401 when trying to start a call with a transient assistant. The error says Key doesn't allow transient assistant.Key doesn't allow transient assistant., even though the payload has allowTransientAssistant: trueallowTransientAssistant: true. If I try to use a public API key, I get a 401 with the error Couldn't verify JWTCouldn't verify JWT.

I'm able to use the public API key directly to start a call, but I'd prefer to use a JWT.

living-lavender•5/20/25, 3:58 PM

https://docs.vapi.ai/server-url/server-authentication

Server Authentication | Vapi

wispy-oliveOP•5/20/25, 4:34 PM

@Sahil I'm not clear on how that answers my question.

SarthakAPP•5/20/25, 6:19 PM

We do offer JWT-based authentication, and it seems it was removed by mistake. I'll work on getting that re-added by tomorrow, or you can check the GitHub docs section in the meantime.

wispy-oliveOP•5/20/25, 6:46 PM

Alright, thank you!

Wwispy-olive Alright, thank you!

dangerous-fuchsia•5/21/25, 2:00 AM

https://github.com/VapiAI/docs/blob/main/fern/customization/jwt-authentication.mdx

cc: @Sahil

GitHub

docs/fern/customization/jwt-authentication.mdx at main · VapiAI/docs

Vapi docs. Contribute to VapiAI/docs development by creating an account on GitHub.

living-lavender•5/21/25, 12:00 PM

https://docs.vapi.ai/server-url/server-authentication

Server Authentication | Vapi

Missing JWT documentation

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