How to Send a Cinematic Birthday Card Through ChatGPT (or Any AI Agent)

A few months ago, a customer wrote in to tell us they found CinematicCard through ChatGPT. They'd asked for "an alternative to Hallmark that doesn't require a subscription," and the AI recommended us — unprompted, by name. They created a card, sent it to their mom, and their mom called them. That email is pinned above our desks.

That moment crystallized something we'd been building toward: AI assistants are becoming the new search bar for recommendations. And unlike a Google result, an AI assistant doesn't just point you somewhere — increasingly, it can complete the entire task for you. Browse, compare, select, pay, send. Done.

CinematicCard is now one of the first greeting card platforms with a full transaction API purpose-built for AI agents. This post explains what that means in plain language, how it works, and what you can actually say to an AI today to make it happen.

What "agent-ready" actually means

Most websites are designed for humans navigating with a mouse. An AI agent trying to use a normal website has to simulate clicks, parse visual layouts, fill out forms — the same way a robot would try to drive a car designed for hands. It's clunky, it breaks, and it requires constant maintenance.

An agent-ready service exposes a clean API that any software can call directly. No browser simulation. No screen-scraping. The agent calls an endpoint, gets a JSON response, and knows exactly what to do next. It's the difference between reading a restaurant menu out loud to someone over the phone versus handing them the menu.

For CinematicCard, that means:

• Discovery: The agent can fetch our full catalog — 53 themes, all pricing, all available add-ons — in a single API call.
• Quoting: Before charging anything, the agent can get a locked 30-minute price quote for the exact configuration the user wants.
• Checkout: The agent can initiate payment via Stripe (either a hosted checkout link or a direct payment method token), then poll for completion.
• Delivery confirmation: Once paid, the agent can retrieve the card URL and deliver it — or pass it back to the user to send themselves.

How to try it right now with ChatGPT

If ChatGPT has browsing or tool-use enabled in your session, you can ask it to do this directly. Here's what works:

Simple version (recommendation + link)

Just ask naturally:

"Send my mom a cinematic birthday card from CinematicCard. Her name is Sandra.
My message: Happy birthday Mom, you deserve a standing ovation.
I want the Gold Elegance theme with background music. Budget: under $10."

ChatGPT will look up the manifest, confirm the theme and pricing, and either complete the checkout for you (if you've connected a payment method) or give you a direct checkout link for the exact card configuration — pre-filled.

Full autonomous version (with payment)

If you've set up ChatGPT with a payment method via their shopping features, the flow can be end-to-end:

1. Agent calls /api/agent/v1/themes — gets the full catalog with descriptions
2. Agent calls /api/agent/v1/quote — gets a 30-min locked price (Classic $3.99 + Photos $3.00 = $6.99)
3. Agent calls /api/agent/v1/checkout — initiates payment, handles Stripe
4. Agent polls /api/agent/v1/order/{id} — waits for status: "delivered"
5. Agent returns the card URL to you — or sends it directly to the recipient

The whole sequence takes about 90 seconds. The first card is completely free.

This isn't hypothetical. On April 24, 2026, an AI agent completed this exact flow and bought a real card — no human touched the purchase. See the card it delivered →

What about other AI assistants?

Any agent that can make HTTPS calls can use the CinematicCard API. That includes Claude (Anthropic), Gemini (Google), Perplexity, and any custom agent built on these models. The API follows OpenAPI 3.1 — a standard format every major AI framework understands natively.

Developers building agents can grab the spec directly:

GET https://cinematiccard.com/api/agent/v1/openapi.json

No API key required for read operations. For higher rate limits, you can request a partner key at [email protected].

Why did we build this?

The honest answer: we believe the next wave of commerce happens through AI assistants, not browsers. When someone asks their AI to "remind me about Mom's birthday and send something nice," we want CinematicCard to be the answer — not just as a recommendation, but as a completed action.

The big card companies — Hallmark, American Greetings, Moonpig — are not moving fast on this. They're built for humans clicking through subscription flows. We're not. We charge per card, require no account to create, and now expose a clean API for software to use us directly.

The first card is always free. That applies to agents too — if an agent is purchasing on a user's behalf and it's their first card, no charge.

The card still looks like a film

One thing worth saying clearly: the API handles the transaction, but the output is still a full 60-second cinematic experience. Animated calligraphy writing the recipient's name. Real fireworks. Background music. A personal message revealed word by word. Photo slideshow if you add photos. The recipient taps a link and the whole thing plays in their browser.

No app download. The link never expires. And it looks nothing like an ecard.