# WorldFirst

**Canonical:** https://apis.io/providers/worldfirst/  
**Website:** https://www.worldfirst.com/  
**APIs profiled:** 3

WorldFirst is a United Kingdom-founded cross-border payments and money-movement company, headquartered in London and owned by Ant Group (Alipay) since 2019. It gives online sellers, marketplaces, and SMEs a multi-currency World Account to collect, hold, convert, and send money across borders, alongside a World Card for multi-currency spending and marketplace/supplier payouts. Its home market is the United Kingdom, but its book is global e-commerce and cross-border trade, serving merchants selling on Amazon and other marketplaces. WorldFirst ships a genuine, API-native developer platform at developers.worldfirst.com built on Ant Group's Antom-style gateway (open-sea/open-eu/open-na hosts, /amsin/api/v1 paths): a RESTful, JSON, HTTPS-only interface segmented into an Enterprise Solution (account, beneficiary, FX, transfer, payout, invoicing, virtual-card credit), a Pay Solution (Cashier Payment / online checkout acceptance for merchants), and a WorldTrade Solution (cross-border trade orders). Requests are secured with RSA256/ECC224 digital signatures plus OAuth 2.0 access tokens; asynchronous notifications (webhooks) return payment and trade-order results. The public reference is documentation-and-console only — the underlying OpenAPI/Swagger is not offered as a downloadable spec (the gateway blocks anonymous spec fetches), so integration is gated behind partner onboarding and the console's iMock/iTest tooling.

## Kin Score — 41.5 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 41.5).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 45.1 |
| Governance | 4.5 |
| Contract Governance | 4.5 |
| Operational Transparency | 7.9 |
| Developer Ergonomics | 59.5 |
| Commercial Clarity | 38.2 |
| Access Clarity | 38.2 |

Regulatory layer — **Payments**: 39.1 (matched via tags).

## Agent readiness — 32.5 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | yes |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (3)

- **WorldFirst Enterprise Solution API** — The WorldFirst Enterprise Solution (World Account) API — a RESTful, JSON, signed-request interface covering customer onboarding, account and beneficiary management, statements, ...
- **WorldFirst Pay Solution API** — The WorldFirst Pay Solution (Cashier Payment) API lets overseas e-commerce merchants accept payments through a hosted checkout: create a payment order, let the customer complete...
- **WorldFirst WorldTrade Solution API** — The WorldTrade Solution API supports cross-border trade transactions between partners and the WorldFirst platform — e.g. inquiryQuotes (FX quote lookup at /amsin/api/v1/payments...

## Security (2)

- **Worldfirst Authentication** — signature/oauth2 · 2 schemes
- **Worldfirst Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Payments, United Kingdom, Cross-Border, Money Transfer, Foreign Exchange, Payouts, Payment Gateway, E-Commerce, Multi-Currency, Card Issuing

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/worldfirst/). Scores are computed from the provider's own public artifacts under a published rubric.