Limits

How much text a field takes

Limits are counted in characters. Enforce them in your own composer, so a user sees your field's limit instead of an error.

How often a user can write

A write is submitting, voting, following, commenting or marking a notification read. Reads are not counted.

• 30 writes per user, per 60 seconds.
• 300 writes per app, per 60 seconds, so one user cannot use up the rate limit for everyone.

Past that, a write returns the error "Too many requests. Wait a moment, then try again.", with a Retry-After header.

catch let error as DifferentRequestsError {
  if let seconds = error.retryAfterSeconds {
    schedule(after: seconds)
  }
}

Every count resets to zero at the start of each 60-second window, not 60 seconds after the last write.

How often a user can sign in

Sign-ins are counted separately from writes, so a burst of sign-ins doesn't use up the write limit.

• 60 sign-ins from one IP address, per 60 seconds, across every app.
• 600 sign-ins per app, per 60 seconds.
• 120 new users per app, per 60 seconds. Users who have signed in before aren't counted.

Past those, createSession returns the error "Too many sign-ins. Wait a moment, then try again." or "Too many new users at once. Wait a moment, then try again.", with the same Retry-After header.