Citi

Citi is the consumer and institutional brand of Citigroup, serving over 200 million customers across 160 countries. Citi runs one of the largest published API estates in banking: 118 machine-readable OpenAPI and Swagger contracts covering 297 operations are served from developer.citi.com across payment initiation and status, payment acceptance and collections, account reporting and statements, commercial cards and virtual card accounts, CitiFX Gateway and Instant FX, custody and securities services, funds transfer agency, trade services, open banking and gateway services. The payment estate is ISO 20022 native: pain.001, pacs.008, pacs.009 and camt.056 message types are declared inside the contracts themselves, in matched JSON and XML encodings. Authentication is OAuth 2.0 client-credentials over mutual TLS with message-level PKI signing. A sandbox estate is declared in the contracts; production access is relationship-managed through Citi sales.

Citi publishes 12 APIs on the APIs.io network, including API Authentication Services, Account Reporting APIs, Outgoing Payments APIs, and 9 more. Tagged areas include Banking, Financial-Services, Open Banking, Payments, and Treasury.

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

Citi’s developer surface includes developer portal, documentation, API reference, getting-started guide, signup flow, support, engineering blog, and 31 more developer resources.

🌐 Visit website 📡 Source on GitHub

62.2/100 strong ▬ flat Agent 50/100 agent native Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

118 APIs 1 MCP Servers

Banking Financial-Services Open Banking Payments Treasury ISO 20022 Commercial Cards Foreign Exchange Custody Trade Finance Corporate Banking API Gateway

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 62.2/100 · strong

Contract Quality 12.5 / 19

Developer Ergonomics 9.9 / 15

Access Clarity 6.3 / 15

Operational Transparency 4.4 / 10

Contract Governance 0.4 / 9

Discoverability 5.6 / 8

Regulatory Posture 12.7 / 15

Create-or-Update Ergonomics 2.8 / 10

Agent readiness — 50/100 · agent native

Machine-Readable Contract 18 / 18

Agentic Access Contract 0 / 10

Documented Reversibility 6 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 9 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 7 / 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

Delegated User Identity 6 / 6

Protected Resource Metadata 0 / 5

Registration Without a Human 0 / 6

Agentic Commerce Well-Known Document 0 / 5

Regulatory Posture applies to this provider. Its tags matched the Banking & Open Finance 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.

Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/citi: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 12

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

Citi API Authentication Services

OAuth 2.0 token issuance for every Citi institutional API. Four concurrent versions (V1-V4) of the authentication endpoint are published; each product API's own specification na...

Citi Account Reporting APIs

Real-time and intraday account information across Citi's global network: balance inquiry, prior-day and intraday statements (ISO 20022 camt), account services, account statement...

Citi Outgoing Payments APIs

Payment initiation, status, cancellation, refund, enhanced inquiry, reconfirmation, bulk payments, instant/express payments and WorldLink cross-border payouts. Message bodies ar...

Citi Payment Acceptance APIs

Collections and payment acceptance: online payment acceptance, direct debit and e-mandates, PayerID management, Brazil PIX dynamic and due-date collections, and instant direct d...

Citi Commercial Cards and Virtual Card Accounts APIs

Virtual Card Account lifecycle, mobile virtual cards, payment-intermediary VCA management, authorization notifications and webhooks, clearing exception reporting, purchase templ...

CitiFX Gateway and Instant FX APIs

Foreign exchange quoting, order placement, order cancellation and reporting over the CitiFX Gateway and Instant FX services, each published in matched synchronous and asynchrono...

Citi Custody and Securities Services APIs

Custody and securities servicing: safekeeping accounts and positions, cash balances and transactions, securities transactions, custody penalties, tax reclaims, FX transactions, ...

Citi Funds Transfer Agency APIs

Fund transfer agency data for investors, accounts, holdings and transactions, served through the CitiConnect institutional investor services gateway. Citi publishes 4 machine-re...

Citi Open Banking APIs

Regulated open banking surfaces: Ukraine bank data sharing, Ukraine OAuth2 authentication and payment service initiation, and European commercial card account balance and statem...

CitiConnect Trade Services APIs

Trade finance over a lightweight message exchange interface: standby letters of credit, trade finance undertakings, amendment and cancellation, and receivables finance. Citi pub...

Citi Gateway Services API

Marketplace and gateway management for CitiConnect: onboarding, entitlement and configuration operations used to administer a client's API estate. Citi publishes 1 machine-reada...

Citi Additional Payment Services APIs

Payment-adjacent services: beneficiary account validation and search, entity whitelisting, self-service integration operations, and Request to Pay. Citi publishes 4 machine-read...

Scroll for all 12

MCP Servers 1

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

Citi MCP Server

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Citi Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Citi Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

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

Citi Webhooks

ASYNCAPI

Security Posture 3

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

Citi Authentication

apiKey/http/oauth2/unknown · 10 schemes

SECURITY

Citi Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Citi Vulnerability Disclosure

Bugcrowd

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Citi Scopes

24 scopes · clientCredentials/authorizationCode

24 scopes

SCOPES

Resources

Get Started 6

Portal, sign-up, and the first successful call

DeveloperPortal

Portal

GettingStarted

SignUp

Login

Sandbox

Sandbox

Documentation 3

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Documentation

Documentation

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

AgentSkill

AgentSkill

LLMsTxt

LLMsTxt

MCPServer

MCPServer

Design & Contract 7

Pagination, idempotency, versioning, errors, and events

Conventions

Idempotency

Conformance

ErrorCatalog

Lifecycle

DataModel

Webhooks

Scroll for all 7

Build 3

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

DeclineCodes

DeclineCodes

Packages

Packages

Access & Security 6

Authentication, authorization, and security posture

Authentication

OAuthScopes

Compliance

DomainSecurity

VulnerabilityDisclosure

VulnerabilityDisclosure

Security

Security

Operate 4

Status, limits, changes, and where to get help

Support

Deprecation

RateLimits

ChangeLog

Commercial 3

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Plans

Plans

Company 3

The organization behind the API

Website

Website

Blog

Blog

LinkedIn

Source (apis.yml)

aid: citi
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
name: Citi
url: https://raw.githubusercontent.com/api-evangelist/citi/refs/heads/main/apis.yml
created: '2026-03-21'
modified: '2026-09-05'
kind: alias
access: 1st-Party
position: Producing
specificationVersion: '0.23'
aliasOf: citigroup
canonical:
  aid: citigroup
  url: https://raw.githubusercontent.com/api-evangelist/citigroup/refs/heads/main/apis.yml
tags:
- Banking
- Financial-Services
- Open Banking
- Payments
- Treasury
- ISO 20022
- Commercial Cards
- Foreign Exchange
- Custody
- Trade Finance
- Corporate Banking
- API Gateway
tags_raw:
- Banking
- Financial Services
- Open Banking
- Payments
- Treasury
- ISO 20022
- Commercial Cards
- Foreign Exchange
- Custody
- Trade Finance
- Corporate Banking
- API Gateway
description: 'Citi is the consumer and institutional brand of Citigroup, serving over 200 million customers across 160 countries.
  Citi runs one of the largest published API estates in banking: 118 machine-readable OpenAPI and Swagger contracts covering
  297 operations are served from developer.citi.com across payment initiation and status, payment acceptance and collections,
  account reporting and statements, commercial cards and virtual card accounts, CitiFX Gateway and Instant FX, custody and
  securities services, funds transfer agency, trade services, open banking and gateway services. The payment estate is ISO
  20022 native: pain.001, pacs.008, pacs.009 and camt.056 message types are declared inside the contracts themselves, in matched
  JSON and XML encodings. Authentication is OAuth 2.0 client-credentials over mutual TLS with message-level PKI signing. A
  sandbox estate is declared in the contracts; production access is relationship-managed through Citi sales.'
apis:
- name: Citi API Authentication Services
  description: OAuth 2.0 token issuance for every Citi institutional API. Four concurrent versions (V1-V4) of the authentication
    endpoint are published; each product API's own specification names the version it requires. V1-V3 additionally require
    the request payload to be signed and encrypted with asymmetric PKI keys over mutual TLS; V4 removes the signing and encryption
    requirement. Citi publishes 4 machine-readable specifications for this family covering 4 operations, served from developer.citi.com.
  humanURL: https://developer.citi.com/apidocs/authentication/authentication-only-guide
  baseURL: https://tts.apib2b.citi.com/citiconnect/prod
  tags:
  - Authentication
  - OAuth
  - Security
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/authentication/authentication-only-guide
  - type: APIReference
    url: https://developer.citi.com/apidocs/authentication/authentication-api-reference
  - type: OpenAPI
    url: openapi/citi-authentication-api-1-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-authentication-api-2-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-authentication-api-3-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-authentication-api-4-openapi.yaml
  - type: Overlay
    url: overlays/citi-authentication-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Account Reporting APIs
  description: 'Real-time and intraday account information across Citi''s global network: balance inquiry, prior-day and intraday
    statements (ISO 20022 camt), account services, account statement blocks and filters, and account notification subscriptions.
    Citi publishes 7 machine-readable specifications for this family covering 15 operations, served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/account-reporting/balances/balances-overview
  baseURL: https://tts.apib2b.citi.com/citiconnect/prod/accountstatementservices
  tags:
  - Banking
  - Account Information
  - Reporting
  - ISO 20022
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/account-reporting/balances/balances-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/account-reporting/balances/balances-api-reference
  - type: OpenAPI
    url: openapi/citi-blocksandfilters-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-accounts-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-accountsv5-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-statements-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-account-notifications-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-balances-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-statementsv2-api-openapi.yaml
  - type: Overlay
    url: overlays/citi-account-reporting-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Outgoing Payments APIs
  description: Payment initiation, status, cancellation, refund, enhanced inquiry, reconfirmation, bulk payments, instant/express
    payments and WorldLink cross-border payouts. Message bodies are ISO 20022 (pain.001, pain.002, pacs.008, pacs.009, camt.056)
    in both JSON and XML encodings. Citi publishes 27 machine-readable specifications for this family covering 71 operations,
    served from developer.citi.com.
  humanURL: https://developer.citi.com/apidocs/outgoing-payments/payments/payments-overview
  baseURL: https://tts.apib2b.citi.com/citiconnect/prod/paymentservices/v3
  tags:
  - Payments
  - ISO 20022
  - Treasury
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/outgoing-payments/payments/payments-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/outgoing-payments/payments/payments-api-reference
  - type: OpenAPI
    url: openapi/citi-digitalpaymentscollectionsv12-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-express-payments-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-payto-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vamanagement-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-add-on-service-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-addonservice-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-worldlink-v2-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-worldlink-v3-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-payment-status-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-worldlink-v5-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-bulk-payments-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-contractstatusinquiry-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-payment-reconfirmation-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-payment-refund-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentcancellation-json-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentcancellation-xml-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentenhancedinquiry-json-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentenhancedinquiry-xml-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentinitiation-pacs008-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentinitiation-pacs009-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentinitiation-pain102-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-paymentinitiation-pain103-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-proof-of-payment-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-worldlink-ir-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-worldlink-v1-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-digitalpaymentscollections-webhooks-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-express-payments-webhooks-openapi.yaml
  - type: Overlay
    url: overlays/citi-outgoing-payments-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  - type: Webhooks
    url: asyncapi/citi-webhooks.yml
  - type: DeclineCodes
    url: errors/citi-decline-codes.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Payment Acceptance APIs
  description: 'Collections and payment acceptance: online payment acceptance, direct debit and e-mandates, PayerID management,
    Brazil PIX dynamic and due-date collections, and instant direct debit. Citi publishes 10 machine-readable specifications
    for this family covering 44 operations, served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/accept-payments/online-payment-acceptance/online-payment-acceptance-overview
  baseURL: https://tts.apib2b.citi.com/citiconnect/prod
  tags:
  - Payments
  - Collections
  - Direct Debit
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/accept-payments/online-payment-acceptance/online-payment-acceptance-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/accept-payments/online-payment-acceptance/online-payment-acceptance-api-reference
  - type: OpenAPI
    url: openapi/citi-brazillocalmandate-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-online-payment-acceptance-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-payerid-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-due-date-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-immediate-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-e-mandate-api-v1-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-e-mandate-api-v2-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-idd-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-direct-debit-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-static-openapi.yaml
  - type: Overlay
    url: overlays/citi-accept-payments-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  - type: Webhooks
    url: asyncapi/citi-webhooks.yml
  - type: DeclineCodes
    url: errors/citi-decline-codes.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Commercial Cards and Virtual Card Accounts APIs
  description: Virtual Card Account lifecycle, mobile virtual cards, payment-intermediary VCA management, authorization notifications
    and webhooks, clearing exception reporting, purchase template details, mobile wallet provisioning, and commercial card
    transaction disputes. Citi publishes 27 machine-readable specifications for this family covering 57 operations, served
    from developer.citi.com.
  humanURL: https://developer.citi.com/apidocs/commercial-cards/virtual-cards/commercial-cards-overview
  baseURL: https://tts.apib2b.citi.com/tts/cards
  tags:
  - Commercial Cards
  - Virtual Cards
  - Payments
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/commercial-cards/virtual-cards/commercial-cards-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/commercial-cards/virtual-cards/virtual-cards-api-reference
  - type: OpenAPI
    url: openapi/citi-marqueta-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vca-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vcaeventssubscriptions-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-notifications-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-mobilecardonboarding-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-mobilevirtuallifecycle-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-statement-transactions-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-lifecycle-v1-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-lifecycle-v4-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-pi-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-pi-v2-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-card-disputes-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-grace-iva-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-mobile-wallets-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-reporting-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-account-balance-inquiry-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-clearing-exception-report-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-dispute-webhook-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-id-provisioning-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-purchase-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-reporting-get-2-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vca-dual-auth-authorization-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vca-dual-auth-notification-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vcagetnotifications-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-vcanotificationswebhooks-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-pi-webhooks-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-virtual-cards-reporting-v1-openapi.yaml
  - type: Overlay
    url: overlays/citi-commercial-cards-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  - type: Webhooks
    url: asyncapi/citi-webhooks.yml
  - type: DeclineCodes
    url: errors/citi-decline-codes.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: CitiFX Gateway and Instant FX APIs
  description: Foreign exchange quoting, order placement, order cancellation and reporting over the CitiFX Gateway and Instant
    FX services, each published in matched synchronous and asynchronous variants, plus a FIX and SFTP channel guide. Citi
    publishes 17 machine-readable specifications for this family covering 16 operations, served from developer.citi.com.
  humanURL: https://developer.citi.com/apidocs/fx/gateway/citifx-gateway-overview
  baseURL: https://api.citivelocity.com/markets
  tags:
  - Foreign Exchange
  - Markets
  - Treasury
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/fx/gateway/citifx-gateway-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/fx/instant-fx/instant-fx-overview
  - type: OpenAPI
    url: openapi/citi-fx-authentication-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-benchmark-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-benchmark-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-cancel-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-cancel-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-ecommerce-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-gateway-reporting-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-gateway-reporting-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-market-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-market-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-orders-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-orders-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-quote-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-quote-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-reporting-async-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-reporting-sync-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-fx-test-openapi.yaml
  - type: Overlay
    url: overlays/citi-fx-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Custody and Securities Services APIs
  description: 'Custody and securities servicing: safekeeping accounts and positions, cash balances and transactions, securities
    transactions, custody penalties, tax reclaims, FX transactions, billing, and ETF order approval and portfolio listing.
    Citi publishes 12 machine-readable specifications for this family covering 23 operations, served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/custody/accounts/accounts-overview
  baseURL: https://api.citivelocity.com/markets/dod
  tags:
  - Custody
  - Securities Services
  - Markets
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/custody/accounts/accounts-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/custody/safekeeping-positions/safekeeping-positions-api-reference
  - type: OpenAPI
    url: openapi/citi-custody-billing-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-cash-balances-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-cash-transactions-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-custody-penalties-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-safekeeping-positions-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-securitytransactionsaccounts-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-tax-reclaims-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-custody-fx-transactions-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-order-approval-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-portfolio-listing-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-safekeeping-accounts-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-submit-action-openapi.yaml
  - type: Overlay
    url: overlays/citi-custody-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Funds Transfer Agency APIs
  description: Fund transfer agency data for investors, accounts, holdings and transactions, served through the CitiConnect
    institutional investor services gateway. Citi publishes 4 machine-readable specifications for this family covering 4 operations,
    served from developer.citi.com.
  humanURL: https://developer.citi.com/apidocs/transfer-agency/accounts/accounts-overview
  baseURL: https://b2b.api.icg.citi.com/citiconnect/prod/iis/api/funds/transferagency
  tags:
  - Funds
  - Transfer Agency
  - Securities Services
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/transfer-agency/accounts/accounts-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/transfer-agency/accounts/accounts-api-reference
  - type: OpenAPI
    url: openapi/citi-transfer-agency-accounts-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-transfer-agency-holding-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-transfer-agency-investors-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-transfer-agency-transactions-openapi.yaml
  - type: Overlay
    url: overlays/citi-transfer-agency-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Open Banking APIs
  description: 'Regulated open banking surfaces: Ukraine bank data sharing, Ukraine OAuth2 authentication and payment service
    initiation, and European commercial card account balance and statement transaction inquiry. Citi publishes 3 machine-readable
    specifications for this family covering 11 operations, served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/open-banking/ukraine-open-banking/ukraine-open-banking-overview
  baseURL: https://b2b.tts.icgservices.citi.com/citiconnect/openbanking/ukr/accountconsentservices/v1
  tags:
  - Open Banking
  - PSD2
  - Banking
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/open-banking/ukraine-open-banking/ukraine-open-banking-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/open-banking/ukraine-open-banking/ukraine-bank-data-sharing-api-reference
  - type: OpenAPI
    url: openapi/citi-ukraine-bank-data-sharing-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-ukraine-payment-service-initiation-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-ukraine-open-banking-authentication-api-openapi.yaml
  - type: Overlay
    url: overlays/citi-open-banking-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: CitiConnect Trade Services APIs
  description: 'Trade finance over a lightweight message exchange interface: standby letters of credit, trade finance undertakings,
    amendment and cancellation, and receivables finance. Citi publishes 2 machine-readable specifications for this family
    covering 7 operations, served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/trade/standby-letters-of-credit/trade-overview
  baseURL: https://tts.apib2b.citi.com/citiconnect/prod
  tags:
  - Trade Finance
  - Treasury
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/trade/standby-letters-of-credit/trade-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/trade/standby-letters-of-credit/trade-api-reference
  - type: OpenAPI
    url: openapi/citi-finance-undertaking-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-trade-api-openapi.yaml
  - type: Overlay
    url: overlays/citi-trade-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Gateway Services API
  description: 'Marketplace and gateway management for CitiConnect: onboarding, entitlement and configuration operations used
    to administer a client''s API estate. Citi publishes 1 machine-readable specification for this family covering 19 operations,
    served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/gateway-services/gateway-services-user-guide
  baseURL: https://b2b.api.icg.citi.com/citiconnect/prod/gatewayservices
  tags:
  - Platform
  - Administration
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/gateway-services/gateway-services-user-guide
  - type: APIReference
    url: https://developer.citi.com/apidocs/gateway-services/gateway-services-api-reference
  - type: OpenAPI
    url: openapi/citi-marketplace-management-openapi.yaml
  - type: Overlay
    url: overlays/citi-gateway-services-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
- name: Citi Additional Payment Services APIs
  description: 'Payment-adjacent services: beneficiary account validation and search, entity whitelisting, self-service integration
    operations, and Request to Pay. Citi publishes 4 machine-readable specifications for this family covering 24 operations,
    served from developer.citi.com.'
  humanURL: https://developer.citi.com/apidocs/additional-payment-services/additional-payment-services/additional-payment-services-overview
  baseURL: https://tts.apib2b.citi.com/citiconnect/prod/selfservices/v1
  tags:
  - Payments
  - Validation
  properties:
  - type: Documentation
    url: https://developer.citi.com/apidocs/additional-payment-services/additional-payment-services/additional-payment-services-overview
  - type: APIReference
    url: https://developer.citi.com/apidocs/additional-payment-services/additional-payment-services/additional-payment-services-api-reference
  - type: OpenAPI
    url: openapi/citi-self-service-api-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-request-to-pay-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-entityid-openapi.yaml
  - type: OpenAPI
    url: openapi/citi-beneficiary-search-openapi.yaml
  - type: Overlay
    url: overlays/citi-additional-payment-services-overlay.yaml
  - type: Authentication
    url: authentication/citi-authentication.yml
  - type: Conventions
    url: conventions/citi-conventions.yml
  - type: ErrorCatalog
    url: errors/citi-problem-types.yml
  - type: Sandbox
    url: sandbox/citi-sandbox.yml
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/citi.png
common:
- type: Website
  url: https://www.citi.com
- type: DeveloperPortal
  url: https://developer.citi.com/apis/marketplace
- type: Portal
  url: https://partner.citi.com/developers
- type: Documentation
  url: https://developer.citi.com/apidocs/
- type: APIReference
  url: https://developer.citi.com/apidocs/
- type: GettingStarted
  url: https://developer.citi.com/apidocs/authentication/authentication-only-guide
- type: SignUp
  url: https://partner.citi.com/user/register
- type: Login
  url: https://partner.citi.com/user/login
- type: Support
  url: https://partner.citi.com/contact-us
- type: TermsOfService
  url: https://partner.citi.com/legal/terms
- type: PrivacyPolicy
  url: https://partner.citi.com/legal/privacy-policy
- type: Blog
  url: https://www.citigroup.com/global/news
- type: GitHubOrganization
  url: https://github.com/citi
- type: LinkedIn
  url: https://www.linkedin.com/company/citi
- type: Sandbox
  url: sandbox/citi-sandbox.yml
- type: Documentation
  url: https://www.citigroup.com/global/insights/citiconnect-api-portal
- type: Authentication
  url: authentication/citi-authentication.yml
- type: OAuthScopes
  url: scopes/citi-scopes.yml
- type: Conventions
  url: conventions/citi-conventions.yml
- type: Idempotency
  url: conventions/citi-conventions.yml
- type: Conformance
  url: conformance/citi-conformance.yml
- type: Compliance
  url: conformance/citi-conformance.yml
- type: ErrorCatalog
  url: errors/citi-problem-types.yml
- type: DeclineCodes
  url: errors/citi-decline-codes.yml
- type: Lifecycle
  url: lifecycle/citi-lifecycle.yml
- type: Deprecation
  url: lifecycle/citi-lifecycle.yml
- type: DataModel
  url: data-model/citi-data-model.yml
- type: RateLimits
  url: rate-limits/citi-rate-limits.yml
- type: Plans
  url: plans/citi-plans-pricing.yml
- type: Packages
  url: packages/citi-packages.yml
- type: Webhooks
  url: asyncapi/citi-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: LLMsTxt
  url: llms/citi-llms.txt
- type: MCPServer
  url: mcp/citi-mcp.yml
- type: ChangeLog
  url: changelog/citi-changelog.yml
- type: DomainSecurity
  url: security/citi-domain-security.yml
- type: VulnerabilityDisclosure
  url: security/citi-vulnerability-disclosure.yml
- type: Security
  url: https://www.citi.com/reporting-vulnerability
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-09-05'
  status: enriched
  artifacts_added: 273
  pass: local-v3

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