Fnality International

Fnality International is a London-headquartered financial market infrastructure company that builds and operates distributed-ledger wholesale payment systems settling in tokenised central bank money. Backed by a consortium of 24 global financial institutions — including Banco Santander, BNY, Barclays, BNP Paribas, Citi, Goldman Sachs, State Street and UBS — Fnality launched the Sterling Fnality Payment System (£FnPS) in 2024 as the first regulated DLT-based payment system supervised by the Bank of England, with US Dollar and Euro payment systems in development. The systems run on private Ethereum networks, giving participant banks 24/7 availability, real-time atomic and PvP settlement, programmable money and T+0 cross-border liquidity movement. Fnality Services is the operational and product-delivery arm that licenses software to participants and runs inter-system arrangements. Technical documentation for participants is hosted in a credential-gated Archbee space at docs.fnality.com; Fnality publishes no public developer portal, API reference or machine-readable specification.

Fnality International is profiled on the APIs.io network. Tagged areas include Company, Payments, Financial Services, Settlement, and Wholesale Banking.

Fnality International’s developer surface includes engineering blog, support, and 13 more developer resources.

🌐 Visit website 📡 Source on GitHub
10.1/100 minimal Agent 3/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
0 APIs
CompanyPaymentsFinancial ServicesSettlementWholesale BankingDistributed LedgerBlockchainFinancial Market InfrastructureTokenisationCentral Bank MoneyLiquidity ManagementCapital Markets

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 10.1/100 · minimal
Contract Quality 0.0 / 21
Developer Ergonomics 1.1 / 17
Commercial Clarity 1.8 / 17
Operational Transparency 0.0 / 11
Governance 0.0 / 10
Discoverability 4.9 / 9
Regulatory Posture 2.3 / 15
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Regulatory Posture applies to this provider. Its tags matched the Payments 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.
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/. This rating is computed from github.com/api-evangelist/fnality-international: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Pricing Plans 1

Published pricing tiers and plan structures.

Fnality International Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Fnality International Rate Limits

0 limits

RATE LIMITS

Security Posture 1

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Fnality International Domain Security

TLSv1.3 · HSTS

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity

Operate 2

Status, limits, changes, and where to get help

RateLimits
RateLimits
 Support
Support

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 PrivacyPolicy
PrivacyPolicy

Company 7

The organization behind the API

Website
Website
 About
About
 Blog
Blog
 BlogRSS
BlogRSS
 Careers
Careers
 LinkedIn
LinkedIn
 Twitter
Twitter

Scroll for all 7

Other 2

Properties that don't map to a standard resource type

CookiePolicy
CookiePolicy
 SecondaryMarket
SecondaryMarket

Source (apis.yml)

apis.yml Raw ↑ 
aid: fnality-international
name: Fnality International
description: Fnality International is a London-headquartered financial market infrastructure company that builds and operates
  distributed-ledger wholesale payment systems settling in tokenised central bank money. Backed by a consortium of 24 global
  financial institutions — including Banco Santander, BNY, Barclays, BNP Paribas, Citi, Goldman Sachs, State Street and UBS
  — Fnality launched the Sterling Fnality Payment System (£FnPS) in 2024 as the first regulated DLT-based payment system supervised
  by the Bank of England, with US Dollar and Euro payment systems in development. The systems run on private Ethereum networks,
  giving participant banks 24/7 availability, real-time atomic and PvP settlement, programmable money and T+0 cross-border
  liquidity movement. Fnality Services is the operational and product-delivery arm that licenses software to participants
  and runs inter-system arrangements. Technical documentation for participants is hosted in a credential-gated Archbee space
  at docs.fnality.com; Fnality publishes no public developer portal, API reference or machine-readable specification.
image: https://fnality.com/wp-content/uploads/2024/06/logo.svg
url: https://raw.githubusercontent.com/api-evangelist/fnality-international/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-16'
modified: '2026-08-16'
tags:
- Company
- Payments
- Financial Services
- Settlement
- Wholesale Banking
- Distributed Ledger
- Blockchain
- Financial Market Infrastructure
- Tokenisation
- Central Bank Money
- Liquidity Management
- Capital Markets
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/fnality-international-domain-security.yml
- type: LLMsTxt
  url: llms/fnality-international-llms.txt
- type: Plans
  url: plans/fnality-international-plans-pricing.yml
- type: RateLimits
  url: rate-limits/fnality-international-rate-limits.yml
- type: Website
  url: https://fnality.com/
- type: About
  url: https://fnality.com/about-us
- type: Blog
  url: https://fnality.com/news
- type: BlogRSS
  url: https://fnality.com/feed
- type: Support
  url: https://fnality.com/contact-us
- type: PrivacyPolicy
  url: https://fnality.com/privacy-policy
- type: CookiePolicy
  url: https://fnality.com/cookie-policy
- type: Careers
  url: https://fnality.com/work-with-us
- type: LinkedIn
  url: https://www.linkedin.com/company/fnality
- type: Twitter
  url: https://twitter.com/fnality
- type: SecondaryMarket
  url: https://www.hiive.com/securities/fnality-international-stock
x-enrichment:
  date: '2026-08-16'
  status: minimal
  artifacts_added: 5
  pass: local-v1
x-coverage:
  state: gated
  reason: partner-login
  detail: Fnality's only technical documentation lives in an Archbee space at docs.fnality.com that answers HTTP 200 with
    a "Get a magic link to access space with your account — this is a password or guest account protected space" login shell
    instead of content, and every other candidate API host (api., developer., portal.fnality.com) returns NXDOMAIN, so the
    participant integration contract is reachable only by admitted institutions.
  evidence:
  - url: https://docs.fnality.com/
    status: 200
  - url: https://docs.fnality.com/openapi.json
    status: 200
  - url: https://fnality.com/openapi.json
    status: 404
  - url: https://fnality.com/.well-known/api-catalog
    status: 404
  checked: '2026-08-16'