# East West Bank

**Canonical:** https://apis.io/providers/east-west-bank/  
**Website:** https://www.eastwestbank.com/  
**APIs profiled:** 1

East West Bank is the California state-chartered commercial banking subsidiary of East West Bancorp, Inc. (NASDAQ EWBC), headquartered in Pasadena, California, with roughly $79.7 billion in total assets and more than 125 locations across the United States and Greater China. A Member FDIC institution and one of the few U.S. banks holding a full banking license in China, it specializes in cross-border U.S.-China commercial banking, treasury and Global Transaction Services (GTS). On the open-finance front, East West Bank runs a first-party developer portal ("Bridge Open Banking" at apiportal.eastwestbank.com) aimed at commercial clients, documenting APIs to manage sub-accounts, retrieve balances, transfer funds, and obtain commercial account information, with a sandbox of live test accounts; the program is early-stage ("more APIs coming soon") and gated behind sales onboarding, so no OpenAPI/Swagger is publicly downloadable. Consumer-permissioned data access is also available indirectly through the Plaid aggregator. No public FDX participation or CFPB Section 1033 posture is documented as of this profile.

## Kin Score — 26.6 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 26.6).

| Facet | Score |
|---|---|
| Discoverability | 66.7 |
| Contract Quality | 0.0 |
| Governance | 12.5 |
| Operational Transparency | 5.3 |
| Developer Ergonomics | 50.0 |
| Commercial Clarity | 34.2 |

Regulatory layer — **Banking & Open Finance**: 31.6 (matched via tags).

## Agent readiness — 9.0 (agent-aware)

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

## APIs (1)

- **East West Bank Bridge Open Banking API** — East West Bank's first-party commercial banking API program, delivered through the "Bridge Open Banking" developer portal for Global Transaction Services (GTS) clients. Document...

## Security (2)

- **East West Bank Authentication** — oauth2 · 1 scheme
- **East West Bank Domain Security** — TLSv1.3 · HSTS · DNSSEC · DMARC

## Tags

Financial Services, Banking, United States, Commercial Banking, Treasury Management, Cross-Border, Open Finance, Data Aggregation

---

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