Yuno

Yuno is a global payment orchestration platform that lets merchants connect to 1,000+ payment methods, PSPs, anti-fraud, and payout providers through a single API and SDK. Its unified checkout, smart routing, and no-code workflows consolidate a company's payment stack, reduce processing fees, and improve approval rates across markets. Yuno exposes payments, checkout sessions, customers, subscriptions, payouts, disputes, reports, banking connectivity, and a PCI Proxy, plus Web/iOS/Android/React Native/Flutter checkout SDKs, an official MCP server, and an agent toolkit for building agentic payment flows. Yuno is certified to PCI DSS v4.0, SOC 2 Type 2, ISO/IEC 27001, ISO/IEC 27701, GDPR, and is a recognized Visa Service Provider.

Yuno publishes 1 API on the APIs.io network: Payments API. Tagged areas include Company, Payments, Payment Orchestration, Fintech, and Checkout.

The Yuno catalog on APIs.io includes 1 event-driven AsyncAPI specification.

Yuno’s developer surface includes documentation, API reference, getting-started guide, signup flow, engineering blog, changelog, authentication, and 29 more developer resources.

🌐 Visit website 📡 Source on GitHub
54.7/100 developing ▬ flat Agent 50/100 agent native Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
AccessSelf serve
1 APIs 1 MCP Servers
CompanyPaymentsPayment OrchestrationFintechCheckoutPayoutsSubscriptionsAPI

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 54.7/100 · developing
Contract Quality 11.0 / 21
Developer Ergonomics 12.1 / 17
Commercial Clarity 8.5 / 17
Operational Transparency 6.1 / 11
Governance 2.1 / 10
Discoverability 6.5 / 9
Regulatory Posture 8.4 / 15
Agent readiness — 50/100 · agent native
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 9 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 6 / 6
Agent Skills 5 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Regulatory Posture applies to this provider. Its tags matched the Payments regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/yuno: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 1

Individual APIs this provider publishes, each with its own machine-readable definition.

Yuno Payments API

Core Yuno Payments API — customers, checkout sessions, payments, refunds, captures, subscriptions, payouts, disputes, reports, banking connectivity and PCI Proxy. Header API-key...

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

yuno-mcp.yml

MCP SERVER

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Yuno Webhooks

ASYNCAPI

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Yuno Authentication

apiKey · 3 schemes

SECURITY

Yuno Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Yuno Vulnerability Disclosure

Hackerone · contact published

SECURITY

Yuno Trust Center

GDPR, ISO/IEC 27001, ISO/IEC 27701, PCI DSS, SOC 2 Type 2, Visa Service Provider

SECURITY

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Sandbox
Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference
 OpenAPI
OpenAPI

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt
 MCPServer
MCPServer
 AgentSkill
AgentSkill

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 Components
Components
 DataModel
DataModel
 Webhooks
Webhooks

Scroll for all 8

Build 4

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs
 DeclineCodes
DeclineCodes

Access & Security 6

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 TrustCenter
TrustCenter
 Compliance
Compliance
 Security
Security
 Authentication
Authentication
 VulnerabilityDisclosure
VulnerabilityDisclosure

Operate 3

Status, limits, changes, and where to get help

StatusPage
StatusPage
 ChangeLog
ChangeLog
 ChangeLog
ChangeLog

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Other 1

Properties that don't map to a standard resource type

Overlay
Overlay

Source (apis.yml)

apis.yml Raw ↑ 
aid: yuno
name: Yuno
description: Yuno is a global payment orchestration platform that lets merchants connect to 1,000+ payment methods, PSPs,
  anti-fraud, and payout providers through a single API and SDK. Its unified checkout, smart routing, and no-code workflows
  consolidate a company's payment stack, reduce processing fees, and improve approval rates across markets. Yuno exposes payments,
  checkout sessions, customers, subscriptions, payouts, disputes, reports, banking connectivity, and a PCI Proxy, plus Web/iOS/Android/React
  Native/Flutter checkout SDKs, an official MCP server, and an agent toolkit for building agentic payment flows. Yuno is certified
  to PCI DSS v4.0, SOC 2 Type 2, ISO/IEC 27001, ISO/IEC 27701, GDPR, and is a recognized Visa Service Provider.
url: https://raw.githubusercontent.com/api-evangelist/yuno/refs/heads/main/apis.yml
accessModel:
  pricing: unknown
  onboarding: self-serve
  trial: false
  try_now: false
  public: false
  label: Self-serve signup
  confidence: medium
  source:
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://y.uno/favicon.ico
x-type: company
x-source: vc-portfolio
x-backed-by:
- a16z
- tiger-global
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-21'
tags:
- Company
- Payments
- Payment Orchestration
- Fintech
- Checkout
- Payouts
- Subscriptions
- API
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
apis:
- name: Yuno Payments API
  description: Core Yuno Payments API — customers, checkout sessions, payments, refunds, captures, subscriptions, payouts,
    disputes, reports, banking connectivity and PCI Proxy. Header API-key auth with X-Idempotency-Key idempotency.
  humanURL: https://docs.y.uno/reference/getting-started/api-reference-overview
  baseURL: https://api.y.uno
  image: https://y.uno/favicon.ico
  tags:
  - Payments
  - Payment Orchestration
  - Checkout
  properties:
  - type: OpenAPI
    url: openapi/_original/yuno-openapi-original.json
  - type: Documentation
    url: https://docs.y.uno/docs/your-payment-operative-system
  - type: APIReference
    url: https://docs.y.uno/reference/getting-started/api-reference-overview
common:
- type: DomainSecurity
  url: security/yuno-domain-security.yml
- type: Website
  url: https://y.uno
- type: DeveloperPortal
  url: https://docs.y.uno/
- type: Documentation
  url: https://docs.y.uno/docs/your-payment-operative-system
- type: APIReference
  url: https://docs.y.uno/reference/getting-started/api-reference-overview
- type: GettingStarted
  url: https://docs.y.uno/reference/getting-started
- type: SignUp
  url: https://dashboard.y.uno
- type: Blog
  url: https://y.uno/blog
- type: GitHubOrganization
  url: https://github.com/yuno-payments
- type: StatusPage
  url: https://status.y.uno
- type: TermsOfService
  url: https://y.uno/terms-and-conditions
- type: PrivacyPolicy
  url: https://y.uno/privacy
- type: TrustCenter
  url: https://security.y.uno/
- type: Compliance
  url: https://security.y.uno/
- type: Security
  url: https://security.y.uno/
- type: ChangeLog
  url: https://docs.y.uno/changelog
- type: OpenAPI
  url: openapi/_original/yuno-openapi-original.json
- type: LLMsTxt
  url: llms/yuno-llms.txt
- type: Packages
  url: packages/yuno-packages.yml
- type: SDKs
  url: packages/yuno-packages.yml
- type: MCPServer
  url: mcp/yuno-mcp.yml
- type: Authentication
  url: authentication/yuno-authentication.yml
- type: Conventions
  url: conventions/yuno-conventions.yml
- type: Idempotency
  url: conventions/yuno-conventions.yml
- type: ErrorCatalog
  url: errors/yuno-problem-types.yml
- type: DeclineCodes
  url: errors/yuno-decline-codes.yml
- type: Lifecycle
  url: lifecycle/yuno-lifecycle.yml
- type: Sandbox
  url: sandbox/yuno-sandbox.yml
- type: Conformance
  url: conformance/yuno-conformance.yml
- type: VulnerabilityDisclosure
  url: security/yuno-vulnerability-disclosure.yml
- type: Components
  url: components/yuno-components.yml
- type: DataModel
  url: data-model/yuno-data-model.yml
- type: Webhooks
  url: asyncapi/yuno-webhooks.yml
- type: Overlay
  url: overlays/yuno-openapi-overlay.yaml
- type: AgentSkill
  url: skills/_index.yml
- type: ChangeLog
  url: changelog/yuno-changelog.yml
x-enrichment:
  date: '2026-07-21'
  status: enriched
  artifacts_added: 23
  pass: local-v1