# BNY Mellon

**Canonical:** https://apis.io/providers/bny-mellon/  
**Website:** https://www.bny.com  
**APIs profiled:** 5

BNY Mellon (legal parent The Bank of New York Mellon Corporation, rebranded to "BNY" in 2024) is a US money-center bank and the world's largest custodian, overseeing roughly $50 trillion in assets under custody and/or administration. Its principal banking subsidiary, The Bank of New York Mellon, is a nationally chartered bank (OCC-supervised) headquartered in New York City, operating across Securities Services, Market & Wealth Services, and Investment & Wealth Management with brand families including Pershing, Eagle Investment Systems, and BNY Markets. On open finance, BNY runs a genuine first-party developer program — the BNY Developer Marketplace at developer.bny.com (formerly marketplace.bnymellon.com) — publishing Treasury Services (payments, liquidity, cash management, trade finance, FX), Asset Servicing, Markets, and Pershing API families to corporate, fintech, and financial-institution clients. Registration and full API reference are gated behind Nexen single sign-on, and no OpenAPI/Swagger is publicly downloadable. BNY also ships a public, smart-contract-only "Data On-Chain" product that broadcasts fund accounting data to Ethereum. Consumer/business-banking account data is reached primarily through aggregators such as Plaid rather than a first-party consumer data API. No FDX participation or CFPB 1033 posture is publicly documented.

## Kin Score — 19.1 / 100 (emerging)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 19.1).

| Facet | Score |
|---|---|
| Discoverability | 64.8 |
| Contract Quality | 0.0 |
| Governance | 0.0 |
| Contract Governance | 0.0 |
| Operational Transparency | 2.6 |
| Developer Ergonomics | 31.0 |
| Commercial Clarity | 35.5 |
| Access Clarity | 35.5 |

Regulatory layer — **Banking & Open Finance**: 24.1 (matched via tags).

## Agent readiness — 0.0 (human-only)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | no |
| 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 (5)

- **BNY Treasury Services API** — Treasury Services API family covering payments (USD clearing, global ACH, RTP, wires, Pay by Bank), liquidity, cash management, trade finance, and FX, exposed to corporate and f...
- **BNY Asset Servicing API** — Asset Servicing API family for custody, fund accounting, middle-office, and transfer-agency operations, published through the BNY Developer Marketplace. API reference is gated b...
- **BNY Markets API** — Markets API family spanning FX, securities finance, fixed income, and equities, published through the BNY Developer Marketplace. API reference is gated behind Nexen single sign-...
- **BNY Pershing API** — Pershing API family for clearing, custody, and the NetX360+ / Wove wealth platforms serving broker-dealers and RIAs, published through the BNY Developer Marketplace. API referen...
- **BNY Data On-Chain** — Public, smart-contract-only product that broadcasts BNY-attested fund accounting data to public blockchains for on-chain and off-chain consumers (first implementation is the Bla...

## Security (1)

- **Bny Mellon Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Financial-Services, Banking, United States, Custody Bank, Treasury Services, Payments, Digital Assets, Open Finance

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