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Yuno for developersReference

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Developers

Yuno is the AI operating system for payments. This page lists what you need to call the Yuno API and ship a payment: URLs, keys, specs, SDKs, and tools, each on one line.

Start the QuickstartAPI reference
Base URLs

Sandbox https://api-sandbox.y.uno/v1

Production https://api.y.uno/v1

Auth

Headers public-api-key and private-secret-key

Keys start with sandbox_ or prod_

Writes

Send X-Idempotency-Key when you create a payment

Amounts in major units: 25 is USD 25.00

01 / Choose how you integrate

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Pick how much of the flow you own.

All four use the same objects and the same API keys.

Yuno SDK

TutorialInstall the SDK, show payment methods, and take a payment on Web, iOS, or Android.

Build your own UI

GuideChoose the parameters and controllers for your own checkout form.

Direct API

GuideYour backend calls the API and owns the flow. Card data requires PCI DSS.

Agents and MCP

GuideConnect coding agents to the Yuno docs and the Yuno API.
02 / Specs and tools
03 / SDKs
Platform names link to each changelog. Also available: Flutter (1.0.x) and React Native (1.4.x).
04 / Core references

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The pages you look up by name.

One line each, with its type.

05 / For AI agents

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Machine-readable entry points.

Load these files, then follow the steps below.

Quick start for agents
  1. Read llms.txt and this page.
  2. Load the OpenAPI spec.
  3. Authenticate as described in Authentication.
  4. Create a payment with the Payments API or an SDK. The Quickstart shows both.
  5. Subscribe to webhooks for asynchronous status updates.
Next

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Keep going.

Three pages to open after this one.

Quickstart

TutorialSend your first sandbox payment.

Payment flow

ConceptEach step of a payment, field by field.

Webhooks

GuideReceive status changes on your server.

Stuck on a term? See the Glossary.