What is Holdify used for?

Holdify enforces dollar-based AI budgets at the API edge, returning a 402 when a limit is hit, with prepaid wallets and a prompt injection firewall. It is a good fit for capping AI spend per customer and selling prepaid AI credits in a SaaS product.

Yes. Holdify has a free plan, and paid plans start at $19 per month.

Is Holdify open source?

No. Holdify is proprietary (closed-source) software and can't be self-hosted. In the API Tools category, open-source options include Unkey, Kong and Apache APISIX.

What are some alternatives to Holdify?

Holdify competes with Stigg, Schematic and Zuplo.

Holdify: features, pricing and alternatives

About Holdify

Holdify is an API control layer for companies that sell AI features. Instead of alerting after overspend, it enforces budgets before requests cost money: when a dollar-based limit for an API key, user or project reaches zero it returns an HTTP 402, with edge verification that the site puts under 50 milliseconds.

It supports OpenAI, Anthropic and Gemini models and fits stacks such as Vercel, Hono and Express. Customers can prepay credits through wallets so the provider does not carry usage risk, spending is attributed per key in dollars with one-cent precision, and a prompt injection firewall screens prompts before they reach the model.

A free tier gives 150,000 tokens a month with no credit card. The site also includes a cost calculator, docs and use case pages, and it is aimed at AI-first and B2B SaaS companies worried about margins eroded by runaway model usage.

Key features

Dollar-based budgets per key, user or project
402 hard stop when a budget is reached
Edge verification under 50 ms
Prepaid customer wallets
Prompt injection firewall
Native OpenAI, Anthropic and Gemini support

Good fit for

Capping AI spend per customer
Selling prepaid AI credits in a SaaS product

Tags: ai-costs; api-gateway; budgets; rate-limiting; prompt-injection; billing

Holdify: questions and answers

What is Holdify used for?: Holdify enforces dollar-based AI budgets at the API edge, returning a 402 when a limit is hit, with prepaid wallets and a prompt injection firewall. It is a good fit for capping AI spend per customer and selling prepaid AI credits in a SaaS product.
Is Holdify free?: Yes. Holdify has a free plan, and paid plans start at $19 per month.
Is Holdify open source?: No. Holdify is proprietary (closed-source) software and can't be self-hosted. In the API Tools category, open-source options include Unkey, Kong and Apache APISIX.
What are some alternatives to Holdify?: Holdify competes with Stigg, Schematic and Zuplo.