env varibles | Railway | Page 1

jolly wren Jan 21, 2026, 1:50 PM

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hello. somehow, my nextjs app that I deployed on railway cant access environment variables in nextjs16 instrumentation-client

I even passed the keys with the .toml file but i cant acsess it.

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to do some workaround i had to do a route

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i dont know why

idle ploverBOT Jan 21, 2026, 2:10 PM

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New reply sent from Central Station thread:

I would highly suggest not using
NEXT_PUBLIC_*
variables for backend.
NEXT_PUBLIC_*
variables are exposed to the public internet.
I would recommend using just
POSTHOG_KEY
and
POSTHOG_HOST
instead.

You're seeing this because this thread has been automatically linked to the Central Station thread.

jolly wren Jan 21, 2026, 2:13 PM

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POSTHOG keys are meant to be public. Their team secures them. I cant access the variable.

#env varibles