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-readable specifications for this family covering 24 operations, served from developer.citi.com.
This API exposes 13 operations across 10 paths, and defines 7 schemas. It is described by OpenAPI 3.0.1.
Requests are made against 2 base URLs: https://tts.apib2b.citi.com/citiconnect/prod/selfservices/v1, https://tts.sandbox.apib2b.citi.com/citiconnect/sb/selfservices/v1.
Metadata
The identity and technical contract details declared by the specification.
Authentication & Security 1
Citi Additional Payment Services APIs declares
1 security scheme
for authenticating requests.
It supports OAuth 2.0 (clientCredentials) using the clientCredentials flow.
By default, every request must be authenticated.
clientCredentials— All CitiConnect APIs use the oAuth2 authentication scheme, which requires a bearer token to authenticate your API call. The Token URL includes the version of a…
Paths & Operations 13
Across 10 paths, the API surfaces 13 operations — 7 GET, 6 POST. Each is listed below with its method, path, parameters, and response codes.
Schemas 7
The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are ProxyLookupRequest (4 properties), BeneficiarySearchKoreaJSONRequest (4 properties), Response (3 properties), ProxyLookupSuccessResponse (3 properties). Each schema is shown below with its type and property counts.
Specification
The full machine-readable OpenAPI contract behind this narrative.
Source
This is an independent, third-party profile of Citi Additional Payment Services APIs, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
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