> For clean Markdown of any page, append .md to the page URL.
> For a complete documentation index, see https://citi-demo.ferndocs.com/enterprises/api-reference/payment-services/payments/fi-payment-services/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://citi-demo.ferndocs.com/_mcp/server.

# FI Payment Services


## API Docs

- FI Payment Services [Payment Cancellation](https://citi-demo.ferndocs.com/enterprises/api-reference/payment-services/payments/fi-payment-services/fi-cancellation-api.md)

## OpenAPI Specification

The raw OpenAPI 3.1 specification for this API is available at:
- [OpenAPI JSON](https://citi-demo.ferndocs.com/openapi.json)
- [OpenAPI YAML](https://citi-demo.ferndocs.com/openapi.yaml)