> 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/payment-initiation-service/llms.txt.
> For AI client integration (Claude Code, Cursor, etc.), connect to the MCP server at https://citi-demo.ferndocs.com/_mcp/server.

# Payment Initiation Service


## API Docs

- Payment Initiation Service [Payment Initiation](https://citi-demo.ferndocs.com/enterprises/api-reference/payment-services/payments/payment-initiation-service/payment-initiation-using-post.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)