# Hampden & Co Payment Initiation API

**Canonical:** https://apis.io/apis/hampden-and-co/hampden-and-co-payment-initiation-api/  
**Provider:** Hampden & Co — https://apis.io/providers/hampden-and-co/  
**Base URL:** https://developer-sandbox.hampdendigital.com  
**Documentation:** https://developer-sandbox.hampdendigital.com/

Hampden & Co Payment Initiation API is one of 4 APIs that [Hampden & Co](https://apis.io/providers/hampden-and-co/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Payment Initiation and PIS. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

OBIE Read/Write Payment Initiation Service (PIS) - domestic, scheduled, standing-order, international, and file payments - as a FAPI-secured PSD2 dedicated interface. The harvested OpenAPI is the shared OBIE Read/Write standard (v4.0.1), not a Hampden-proprietary contract; production access requires TPP onboarding with eIDAS/OBIE certificates and PSD2 strong customer authentication.

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/hampden-and-co/refs/heads/main/openapi/hampden-and-co-payment-initiation-api-openapi.yml
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/hampden-and-co/refs/heads/main/overlays/hampden-and-co-payment-initiation-api-overlay.yaml
- **Documentation** — https://developer-sandbox.hampdendigital.com/home
- **APIReference** — https://standards.openbanking.org.uk/api-specifications/latest/
- **Registration** — https://www.hampdenbank.com/tpp-registration

## Other Hampden & Co APIs (3)

- [Hampden & Co Open Data API](https://apis.io/apis/hampden-and-co/hampden-and-co-open-data-api/)
- [Hampden & Co Account & Transaction Information API](https://apis.io/apis/hampden-and-co/hampden-and-co-account-information-api/)
- [Hampden & Co Confirmation of Funds API](https://apis.io/apis/hampden-and-co/hampden-and-co-confirmation-of-funds-api/)

## Tags

Payment Initiation, PIS

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/hampden-and-co/hampden-and-co-payment-initiation-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/hampden-and-co/.