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.
Index entry only — little beyond a description and a link, and nothing machine-readable enough for an agent to act on without a human reading the site first.
API Evangelist profiles Fnality International the way a machine reads it — 3 machine-readable artifacts, pulled from the provider's own public surface and indexed so a developer, an analyst, or an AI agent can evaluate it against every other provider on the network.
Every provider in the network is reduced to the same set of machine-readable artifacts — OpenAPI contracts, event specifications, GraphQL schemas, runnable collections, pricing and rate-limit signals, security posture, OAuth scopes, and the agent surfaces (MCP servers and skills) that let software drive the API on its own. We profile them because the interface is the part of a company you can actually inspect: it is a truer signal of what a provider does than any marketing page. From those artifacts we compute the Kin Score — Fnality International scores 10.1/100 (minimal), with a separate agent-readiness read of 3/100 (human only). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
Why this profile is thin
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.
An API exists — we simply could not reach the contract without credentials or a sales conversation. This one is Fnality International's to change: publishing the reference and a machine-readable spec at a public URL, while keeping key issuance behind whatever gate they like, would let an integrator evaluate the API before committing to a call.
What we probed
https://docs.fnality.com/→ HTTP 200https://docs.fnality.com/openapi.json→ HTTP 200https://fnality.com/openapi.json→ HTTP 404https://fnality.com/.well-known/api-catalog→ HTTP 404
Kin Score
This is the API Evangelist rating — a single, repeatable read computed from the artifacts on this page. Green fill is points earned; the red track is points possible, so every bar shows earned-versus-possible at a glance.
Kin Score
How this is scored →scored 2026-08-17 · rubric v0.11.0
Put this on your own site. The badge is drawn live from Fnality International's current Kin Score — paste it once and it updates itself every time the score is recomputed. It follows your visitor's light or dark setting, and it links back here so anyone who sees it can read the full breakdown.
<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/fnality-international/"
title="Fnality International on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/fnality-international.svg"
alt="Fnality International Kin Score — API readiness rating by API Evangelist" width="150" height="150" loading="lazy">
</a>[](https://providers.apievangelist.com/providers/fnality-international/)<!-- Kin Score · API Evangelist -->
<a href="https://providers.apievangelist.com/providers/fnality-international/"
title="Fnality International on API Evangelist — API profile and Kin Score">
<img src="https://apis.io/badge/fnality-international/card.svg"
alt="Fnality International Kin Score — API readiness rating by API Evangelist" width="340" height="120" loading="lazy">
</a>More shapes, themes and sizes → · Score as JSON · How badges work
How we profile Fnality International
Each block below is one kind of artifact we hold for Fnality International. For each we say what it is and why it earns a place in the profile, then list every one we've indexed — capped at two rows, scroll within the panel for the rest.
Pricing Plans 1
Pricing is part of the interface. Machine-readable plans tell you what a tier costs and includes before you commit — one of the six things the Kin Score reads for commercial clarity.
Published pricing tiers and plan structures.
Rate Limits 1
Rate limits are the difference between a demo that works and a production integration that doesn't fall over. Publishing them is an operational-transparency signal — and a hard requirement for any agent that plans its own throughput.
Documented rate limits and quota policies.
Fnality International Rate Limits
RATE LIMITSSecurity Posture 1
Authentication, domain security, vulnerability disclosure, and trust-center signals — the evidence that a provider takes security seriously enough to document it. We profile it because you can't govern what you can't see.
Authentication, domain security, vulnerability disclosure, and trust-center signals.
Resources
Every other property we hold for Fnality International — documentation, portals, status pages, policies, and corporate surface — grouped by the job it does, following the integrator's arc from getting started to running in production.
Agent Surfaces 1
MCP servers, agent skills, and machine-readable catalogs
Access & Security 1
Authentication, authorization, and security posture
Operate 2
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 7
The organization behind the API
Scroll within the panel for all 7 ·
Other 2
Properties that don't map to a standard resource type
← All providers · Data indexed from github.com/api-evangelist/fnality-international · machine-readable index on apis.io
This is an independent, third-party profile of Fnality International, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.
The Kin Score and Agent Readiness rating are independently calculated assessments of a company's public API artifacts, scored against a published rubric. They are not certifications, endorsements, security assessments, or audits.
Corrections, re-scores, and removal are free — no partnership or purchase required, and you do not need to justify the request. A removed company is recorded as unrated, never scored zero for having asked. Acknowledgement within one business day; removal within two.
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you will get a person, not a form — we will tell you exactly which public URLs this profile was built from.