Slice API
Slice publishes a public API on Stoplight with OAuth 2.0 authorization-code flow, but credentials go only to approved partners; no self-serve signup or sandbox exists. There are no webhooks, so change capture is timestamp polling, and legacy docs linger at devdocs.slice.com.
Frequently asked questions
Slice scores D+ on the API Report Card. Slice publishes a public API on Stoplight with OAuth 2.0 authorization-code flow, but credentials go only to approved partners; no self-serve signup or sandbox exists. There are no webhooks, so change capture is timestamp polling, and legacy docs linger at devdocs.slice.com.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
Slice (legal name Slice Life, dba Slice) is a vertical SaaS + marketplace platform built exclusively for independent pizzerias.
POS / Hospitality - specifically vertical SaaS for independent pizzerias (single-shop and small-chain quick-service pizza operators) in the US and UK. A pizzeria owner uses Slice to: launch and operate a branded online ordering site and app (Slice Ordering) that accepts pickup and delivery orders without per-order commission marked up to the operator; route incoming orders into Slice Register, the pizza-specific POS, which also handles in-store counter and phone orders, payments, kitchen tickets, and consolidated daily payouts; sync menus, hours, and listings across 20+ channels (the shop website, Google Business Profile, Apple Business Profile, Facebook, Instagram, One Bite app, Slice app); push automated email/SMS marketing (up to ~3,000 messages/week per shop), win-back offers, and seasonal promotions managed by Slice's in-house marketing team; participate in Slice Rewards (1 Pizza Point per $15 order, free pizza after 8 points - billed as the nation's largest pizza loyalty program); integrate with 30+ third-party delivery apps (DoorDash, Grubhub, Uber Eats) for ~$75/mo so all online/phone/in-person orders consolidate in one register; access pooled-purchasing supply deals via Owned Supply Co.
18,000-20,000+ independent pizzerias on the platform, the largest single network of indie pizza shops in the US, with marketplace traffic in the millions of monthly orders.
Yes, but consumer/SMB-hospitality flavored: every digital pizza order (Slice marketplace, branded site, app, third-party delivery), the shop's full menu and pricing across 20+ ordering channels, Slice Rewards loyalty profiles and Pizza Points balances, customer PII and order history captured via Twilio Segment into the Slice customer data platform, payment/transaction records, automated marketing campaign content and performance, Pizzeria Score KPI metrics, supply purchasing through Owned Supply Co., and Slice Register POS sales/cash/tip data with consolidated daily payouts.
~16 years old, founded 2010 in New York by Ilir Sela as MyPizza, rebranded to Slice.
Developer portal access is gated - partners must apply for OAuth credentials on a partner-dev environment rather than self-serve sandbox/sign-up. API documentation is split across a modern Stoplight portal (developer.slicelife.com) and an older legacy doc site (devdocs.slice.com); coverage and currency between the two is uneven. Full sourced list under Sources below.
Common alternatives include Toast (Online Ordering + POS), Square for Restaurants, ChowNow, Owner.com, Menufy (by HungerRush), HungerRush (Revention). Graded alternatives appear under "More from the report card" below.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial Slice API and MCP server so AI agents and internal tools can read and write Slice data. See the Slice integration docs at supergood.ai/docs/slice-api.