Citcon

Citcon is a global payment processing platform, founded in 2015 and headquartered in San Jose, California, that unifies 100+ local and global payment methods behind a single Universal Payment Interface (UPI) API. Merchants use Citcon to accept digital wallets (Alipay, WeChat Pay, PayPal, Venmo, CashApp, China UnionPay, Kakao Pay, NaverPay, Line Pay, PayPay and more), cards, and Buy Now Pay Later, plus global payouts, pay-by-link, surcharging, dual pricing, and in-store/POS acceptance across 50+ countries and 10+ settlement currencies. The UPI API is a REST/JSON payments API using Bearer access-token authentication with charge, capture, refund, cancel, vault (tokenization), inquiry, and consult operations, IPN webhooks, and a sandbox environment. Citcon is backed by Norwest Venture Partners and Sierra Ventures.

Citcon publishes 1 API on the APIs.io network. Tagged areas include Company, Payments, Cross-Border Payments, Digital Wallets, and Payment Gateway.

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

Citcon’s developer surface includes documentation, API reference, getting-started guide, engineering blog, support, signup flow, authentication, and 20 more developer resources.

🌐 Visit website 📡 Source on GitHub
37.5/100 thin Agent 48/100 agent ready Full breakdown ↓
scored 2026-07-20 · rubric v0.4
1 APIs 1 MCP Servers 0 Features
CompanyPaymentsCross-Border PaymentsDigital WalletsPayment GatewayBNPLGlobal PayoutsFintech

API Rating

API Evangelist API Evangelist Rating How this is scored →
scored 2026-07-20 · rubric v0.4
Composite quality — 37.5/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 16.1 / 20
Commercial Clarity 8.4 / 20
Operational Transparency 3.8 / 13
Governance 0.0 / 12
Discoverability 9.3 / 10
Agent readiness — 48/100 · agent ready
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 15
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
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/citcon: 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

Citcon Universal Payment Interface (UPI) API

Citcon's UPI is a REST/JSON payments API for accepting 100+ global payment methods. It uses Bearer access-token authentication and exposes charge, charge-confirm, capture, refun...

MCP Servers

citcon-mcp.yml

MCP SERVER

Event Specifications

Citcon Upi Webhooks

ASYNCAPI

Resources

Get Started 4

Portal, sign-up, and the first successful call

DeveloperPortal
DeveloperPortal
 GettingStarted
GettingStarted
 SignUp
SignUp
 Sandbox
Sandbox

Documentation 2

Reference material describing how the API behaves

Documentation
Documentation
 APIReference
APIReference

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

MCPServer
MCPServer
 LLMsTxt
LLMsTxt
 AgentSkill
AgentSkill

Design & Contract 6

Pagination, idempotency, versioning, errors, and events

Conventions
Conventions
 Idempotency
Idempotency
 ErrorCatalog
ErrorCatalog
 Lifecycle
Lifecycle
 Conformance
Conformance
 Webhooks
Webhooks

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization
 Packages
Packages
 SDKs
SDKs

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Compliance
Compliance
 Authentication
Authentication

Operate 2

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage

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

Source (apis.yml)

apis.yml Raw ↑ 
aid: citcon
name: Citcon
description: Citcon is a global payment processing platform, founded in 2015 and headquartered in San Jose, California, that
  unifies 100+ local and global payment methods behind a single Universal Payment Interface (UPI) API. Merchants use Citcon
  to accept digital wallets (Alipay, WeChat Pay, PayPal, Venmo, CashApp, China UnionPay, Kakao Pay, NaverPay, Line Pay, PayPay
  and more), cards, and Buy Now Pay Later, plus global payouts, pay-by-link, surcharging, dual pricing, and in-store/POS acceptance
  across 50+ countries and 10+ settlement currencies. The UPI API is a REST/JSON payments API using Bearer access-token authentication
  with charge, capture, refund, cancel, vault (tokenization), inquiry, and consult operations, IPN webhooks, and a sandbox
  environment. Citcon is backed by Norwest Venture Partners and Sierra Ventures.
url: https://raw.githubusercontent.com/api-evangelist/citcon/refs/heads/main/apis.yml
image: https://cdn.prod.website-files.com/6828b564a444ee6676dd6111/6828b564a444ee6676dd611d_citcon-logo.svg
x-type: company
x-source: vc-portfolio
x-backed-by:
- norwest-venture-partners
- sierra-ventures
x-tier: enriched
x-tier-reason: portfolio-lead
specificationVersion: '0.20'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Payments
- Cross-Border Payments
- Digital Wallets
- Payment Gateway
- BNPL
- Global Payouts
- Fintech
apis:
- name: Citcon Universal Payment Interface (UPI) API
  description: Citcon's UPI is a REST/JSON payments API for accepting 100+ global payment methods. It uses Bearer access-token
    authentication and exposes charge, charge-confirm, capture, refund, cancel, transaction inquiry, vault (tokenized payment
    methods), and consult operations, plus IPN webhooks for asynchronous payment-status notifications. A sandbox environment
    is available for testing.
  humanURL: https://www.citcon.com/dev/universal-payment-interface-upi---api
  baseURL: https://api.citconpay.com/v1/
  tags:
  - Payments
  - Cross-Border Payments
  - Digital Wallets
  properties:
  - type: Documentation
    url: https://www.citcon.com/dev/universal-payment-interface-upi---api
  - type: APIReference
    url: https://www.citcon.com/dev/universal-payment-interface-upi---api
  - type: Authentication
    url: authentication/citcon-authentication.yml
  - type: Sandbox
    url: sandbox/citcon-sandbox.yml
  - type: Webhooks
    url: asyncapi/citcon-upi-webhooks.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/citcon-domain-security.yml
- type: Website
  url: https://citcon.com
- type: DeveloperPortal
  url: https://www.citcon.com/dev/overview
- type: Documentation
  url: https://www.citcon.com/dev/universal-payment-interface-upi---api
- type: APIReference
  url: https://www.citcon.com/dev/universal-payment-interface-upi---api
- type: GettingStarted
  url: https://www.citcon.com/dev/overview
- type: Blog
  url: https://www.citcon.com/resources/blogs-press-releases
- type: Support
  url: https://www.citcon.com/contact
- type: SignUp
  url: https://www.citcon.com/contact
- type: TermsOfService
  url: https://www.citcon.com/terms-conditions
- type: PrivacyPolicy
  url: https://www.citcon.com/privacy-policy
- type: GitHubOrganization
  url: https://github.com/citcon
- type: StatusPage
  url: https://status.citconpay.com
- type: Compliance
  url: https://www.citcon.com/resources/compliance
- type: Authentication
  url: authentication/citcon-authentication.yml
- type: Conventions
  url: conventions/citcon-conventions.yml
- type: Idempotency
  url: conventions/citcon-conventions.yml
- type: ErrorCatalog
  url: errors/citcon-problem-types.yml
- type: Sandbox
  url: sandbox/citcon-sandbox.yml
- type: Lifecycle
  url: lifecycle/citcon-lifecycle.yml
- type: Conformance
  url: conformance/citcon-conformance.yml
- type: Packages
  url: packages/citcon-packages.yml
- type: SDKs
  url: packages/citcon-packages.yml
- type: MCPServer
  url: mcp/citcon-mcp.yml
- type: Webhooks
  url: asyncapi/citcon-upi-webhooks.yml
- type: LLMsTxt
  url: llms/citcon-llms.txt
- type: AgentSkill
  url: skills/_index.yml
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence