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Everything you need to monetize AI APIs

Issue keys, track AI tokens, enforce dollar budgets. All synced with your payment provider.

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API Key Lifecycle

Create, rotate, and revoke keys. Add scopes, metadata, and separate environments.

AI Token Tracking

Real-time token usage from OpenAI, Anthropic, and more. Per-key cost attribution.

Token-based Rate Limiting

Per-key limits with token budgets and dollar caps. Protect margins.

Payment Provider Sync

Polar webhooks keep entitlements in sync. Stripe and LemonSqueezy in beta.

One API call tells you everything

Call POST /v1/verify from your middleware. Get back a decision, remaining quota, and entitlements.

valid Is the key active and allowed?
remaining Requests left this period
remaining_tokens AI tokens left this period
remaining_budget_usd Dollar budget remaining
reset_at When the quota resets
plan Customer's current plan
entitlements Feature flags for this key

response.json

{
  "valid": true,
  "remaining": 4823,
  "remaining_tokens": 50000,
  "remaining_budget_usd": 12.50,
  "reset_at": "2025-02-01T00:00:00Z",
  "plan": "pro",
  "entitlements": ["chat", "embeddings"]
}

200 OK - 23ms

Your payment provider stays in charge

Polar handles billing. Holdify enforces access. When someone upgrades or cancels, webhooks update their limits instantly.

Polar

Billing, subscriptions, checkout

Holdify

Keys, verification, enforcement

Your API

Your product, your customers

Ready to get started?

Start free with 150K requests/month. No credit card required.

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