Function tierGate

api/middleware/tierGate.ts:74–94

(gate: GateCheck)

 * Create middleware that enforces a tier gate.
 */
export function tierGate(gate: GateCheck) {
  return (req: Request, res: Response, next: NextFunction): void => {
    const tier: Tier = req.tier || 'free'
    const config = getTierConfig(tier)

    if (!passesGate(config, gate)) {
      const required = minimumTierFor(gate)
      res.status(403).json({
        error: 'Upgrade required',
        message: `This feature requires a ${required} plan or higher.`,
        current_tier: tier,
        required_tier: required,
        feature: gate,
        upgrade: 'Contact sales or set GODMODE_TIER_KEYS to upgrade your API key tier.',
      })
      return
    }

    next()
  }
}