Resy API: What Restaurants Can Automate Around Resy OS
Tomorrow’s service is a text away. Ask Carly for the cover count, the VIPs on the books and the parties that still have not confirmed, and it answers from the reports Resy already sends you. The same setup can chase unconfirmed large parties in the afternoon, send a morning brief to the chef and the floor manager, draft the note to a regular who cancelled twice this month, and turn a request from your wine club into a booking for the tasting room.
Resy’s reservation API is handed to approved technology partners, not to restaurants. That changes how the plumbing is built, and it changes nothing about what you can automate. This post covers what Resy OS gives an operator to work with, what Carly does with it, and what the diner side of the API looks like now that ChatGPT and personal agents are booking tables.
What a Resy OS restaurant can automate today
Every one of these runs on signals Resy already produces: the daily and weekly reports, guest communications, POS data through Toast or Square, and your own inbox and calendar.
The 3 p.m. confirmation chase
Resy’s daily report lists confirmation status and anticipated no-shows for the coming service. A Carly workflow reads that report when it lands, pulls every party of six or more that has not confirmed, and drafts the text or email in your voice. Michael, the GM, gets one message with the list and approves it with a reply. Nothing goes out without him.
The morning brief
At 8 a.m. the chef and the floor manager get a short brief: covers by seating, large parties, guests tagged VIP or allergy in the Resy guestbook, and how tonight compares with the same night last week. Resy’s weekly report adds which booking sources drove the highest spend, so the brief can flag when a Reserve with Google or ChatGPT booking is outperforming the app.
Cancellations that turn into covers
Resy’s Notify feature alerts waitlisted guests when a table opens. What Notify does not do is tell you that Emily, a regular with fourteen visits, has now cancelled twice in a month. Carly watches the cancellation emails, matches the guest against the notes you keep, and drafts a personal note rather than a generic one.
Guestbook to CRM without the export
Since October 2025, Resy has synced guestbook data to Loyalist and Fishbowl on the Platform, Platform 360 and Advanced plans, with visit history, preferences and frequency flowing both ways. If you use one of those, Carly connects to it and works from the same guest record. If you use a different CRM, Carly connects to thousands of apps, and the weekly guest export becomes the sync.
Events, wineries and the Tock side
Tock venues are now under Resy, and the Essential and Premium plans carry the Tock experience and event tooling. A Carly workflow can take an inbound “can you do a private dinner for twelve in November” email, check the private dining calendar, and draft the reply with the deposit terms, so the event lead answers the same day instead of the following week.
How Carly connects to Resy
There are three paths, and only one of them is closed.
- The signals Resy sends you. Confirmation emails, cancellation notices, the daily and weekly reports, and the guest communications you already send. Carly reads your Gmail or Outlook and your calendar, and that is enough for everything above. This works on every Resy plan.
- A partner that exposes a key. Resy’s plan comparison lists API among its integrations, but the key goes to the POS, CRM, loyalty and discovery vendors Resy approves. If one of your partners gives you API credentials of your own, paste them at carlyassistant.com/integrations and Carly works with that partner’s data directly. Toast and Square both fit here.
- A direct integration. For a group running several venues, book a call and we will scope the integration path with you.
Josh runs a three-location group on Platform 360. His setup uses path one for the briefs and confirmations, and Toast’s data through path two for spend per cover. Neither required anything from Resy’s partnerships team.
Carly’s free Zapier-style workflows handle the watching, matching and scheduling. AI agents that read the guest notes and write the outreach start at $35/month.
The diner side: agents are already booking your tables
Resy launched reservations inside ChatGPT on August 10, 2026. A diner asks for sushi for four tonight, sees live availability under each restaurant, and confirms with Resy without leaving the chat. That is Resy’s own partner API at work, and it is the demand channel worth watching in your weekly booking-source report.
The other side of that story arrived a month later. On September 6, a diner asked the personal agent Instinct to get a table at 4 Charles Prime Rib. The agent’s log showed roughly 200 requests an hour to Resy, polling every 0.4 seconds when tables were released, and Resy deactivated the account and cancelled its reservations before reinstating it two days later. For an operator the lesson is simple: the sanctioned agent channels (ChatGPT, Reserve with Google) show up in your reports as booking sources, and the unsanctioned ones look like scalpers and get banned.
Reference: Resy OS plans and integration surface
Prices from resy.com/resyos/plans-and-pricing on September 30, 2026, in USD, monthly.
| Plan | Price | Integration surface |
|---|---|---|
| Platform | $289/mo | Reservations and table management, POS integrations |
| Essential (powered by Tock) | $289/mo + 3% on prepayments | Event ticketing, customization |
| Platform 360 | $459/mo | Platform plus advanced analytics, CRM integrations |
| Premium (powered by Tock) | $459/mo + 2% on prepayments | Essential plus POS integrations, premium support, lower prepayment fee |
Integrations Resy names on its site: Toast and Square at the POS, Reserve with Google for discovery, Loyalist and Fishbowl for CRM, plus data and analytics partners. There is no self-serve developer portal, no Zapier app, and no public webhook subscription for operators. Amex is folding Tock into Resy over 2026 and has said a unified restaurant platform is coming, so the partner surface will keep moving. The signals in path one are the stable part.
Frequently asked questions
Does Resy have a public API?
Not for restaurants. Resy’s reservation and guest API is issued to technology partners it approves, such as POS, CRM and discovery vendors. Operators get the integrations those partners build, not a key of their own.
Can I get a Resy API key for my restaurant?
There is no self-serve key. If a partner integration you use exposes credentials to you, Carly can use them. Otherwise Carly works from the reports and notifications Resy already sends.
Does Resy work with Zapier?
There is no Resy app in Zapier’s directory. Email-based workflows are the practical route, and they are the free tier of Carly.
Can AI agents book on Resy?
Yes, through Resy’s own channels: ChatGPT since August 2026 and Reserve with Google. Agents that scrape the diner app instead have had accounts banned.
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