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.
BNY Mellon publishes 5 APIs on the APIs.io network. Tagged areas include Financial-Services, Banking, United States, Custody Bank, and Treasury Services.
BNY Mellon’s developer surface includes documentation, support, sandbox, and 12 more developer resources.
Regulatory Posture applies to this provider. Its tags matched the
Banking & Open Finance regime, so
Regulatory Posture carries 15 points of the composite.
If this regime is wrong for your business, say so on your
provider repo — the
applicability map is public and we will correct it.
Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for
this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero:
never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and
several others — scorable at all.
The six quality facets above are damped to 85 points between them,
because the conditional facet above carries the other
15. That is why each facet's contribution is shown against a damped
maximum: raising a quality facet moves the composite by 85% of its nominal
weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/bny-mellon: open an issue to ask a question, or submit a pull request to add artifacts.
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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...
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...
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-...
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...
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...
aid: bny-mellon
url: https://raw.githubusercontent.com/api-evangelist/bny-mellon/refs/heads/main/apis.yml
name: BNY Mellon
kind: company
description: 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.
deliveryModel:
model: unknown
open_source: unknown
commercial: true
callable_host: false
label: Delivery model not determined — needs a product licence on record
confidence: low
source:
- pricing
- repository-unlicensed
generated: '2026-08-28'
method: derived
accessModel:
pricing: unknown
onboarding: unknown
trial: false
try_now: false
public: false
label: Unknown
confidence: low
source:
- security
- sandbox
generated: '2026-09-02'
method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Financial-Services
- Banking
- United States
- Custody Bank
- Treasury Services
- Payments
- Digital Assets
- Open Finance
tags_raw:
- Financial Services
- Banking
- United States
- Custody Bank
- Treasury Services
- Payments
- Digital Assets
- Open Finance
created: '2026-07-23'
modified: '2026-07-24'
specificationVersion: '0.23'
apis:
- aid: bny-mellon:treasury-services-api
name: BNY Treasury Services API
description: 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 financial-institution clients. Full API reference, specs,
and sandbox are gated behind Nexen single sign-on; no OpenAPI is publicly downloadable.
humanURL: https://marketplace.bnymellon.com/treasury/api-library/treasury-services-apis
tags:
- Payments
- Treasury
- Liquidity
- Trade Finance
- FX
properties:
- type: Documentation
url: https://marketplace.bnymellon.com/treasury/api-library/treasury-services-apis
- type: APIReference
url: https://developer.bny.com/app/open/apis
- type: Sandbox
url: https://marketplace.bnymellon.com/treasury/api-library/environments
- aid: bny-mellon:asset-servicing-api
name: BNY Asset Servicing API
description: Asset Servicing API family for custody, fund accounting, middle-office, and transfer-agency operations, published
through the BNY Developer Marketplace. API reference is gated behind Nexen single sign-on; no OpenAPI is publicly downloadable.
humanURL: https://developer.bny.com/app/open/apis
tags:
- Custody
- Asset Servicing
- Fund Accounting
properties:
- type: Documentation
url: https://developer.bny.com/app/open/apis
- aid: bny-mellon:markets-api
name: BNY Markets API
description: 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-on; no OpenAPI is publicly downloadable.
humanURL: https://developer.bny.com/app/open/apis
tags:
- Markets
- FX
- Securities Finance
properties:
- type: Documentation
url: https://developer.bny.com/app/open/apis
- aid: bny-mellon:pershing-api
name: BNY Pershing API
description: Pershing API family for clearing, custody, and the NetX360+ / Wove wealth platforms serving broker-dealers
and RIAs, published through the BNY Developer Marketplace. API reference is gated behind Nexen single sign-on; no OpenAPI
is publicly downloadable.
humanURL: https://developer.bny.com/app/open/apis
tags:
- Pershing
- Clearing
- Wealth
properties:
- type: Documentation
url: https://developer.bny.com/app/open/apis
- aid: bny-mellon:data-on-chain
name: BNY Data On-Chain
description: 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 BlackRock USD Digital Liquidity BUIDL Fund). Consumers
read data via a Solidity interface (IBNYDataConsumerV2) using a proxy-upgrade pattern; there is no OpenAPI/HTTP surface.
Deployed on Ethereum Mainnet (0x7B0eC8D1D1254358A77f107118e96885EdDCEb16) and Sepolia testnet (0xCC75D07cBC86f306A033af29508a1b98E2178264).
humanURL: https://github.com/bnymellon/bny-data-on-chain
tags:
- Digital Assets
- Blockchain
- Ethereum
- Smart Contracts
- Tokenization
properties:
- type: Documentation
url: https://github.com/bnymellon/bny-data-on-chain
- type: SourceCode
url: https://github.com/bnymellon/bny-data-on-chain
common:
- type: IssueTracker
url: https://github.com/bnymellon/bny-data-on-chain/issues
- type: ContributionGuide
url: https://github.com/BNYMellon/bny-data-on-chain/blob/main/CONTRIBUTING.md
- type: TrustCenter
url: https://www.bny.com/corporate/global/en/about-us/trust-center.html
- type: DomainSecurity
url: security/bny-mellon-domain-security.yml
- type: Website
url: https://www.bny.com
- type: DeveloperPortal
url: https://developer.bny.com
- type: Documentation
url: https://developer.bny.com/app/open/apis
- type: GitHubOrganization
url: https://github.com/bnymellon
- type: LinkedIn
url: https://www.linkedin.com/company/the-bank-of-new-york-mellon-corporation
- type: Support
url: https://developer.bny.com/app/open/support
- type: TermsOfService
url: https://www.bny.com/corporate/global/en/terms-of-use.html
- type: PrivacyPolicy
url: https://www.bny.com/corporate/global/en/data-privacy.html
- type: About
url: https://www.bny.com/corporate/global/en/about-us.html
- type: Login
url: https://developer.bny.com/login
- type: Sandbox
url: sandbox/bny-mellon-sandbox.yml
maintainers:
- FN: Kin Lane
email: kin@apievangelist.com
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