Coventry Building Society
Coventry Building Society is the United Kingdom's second-largest building society, a member-owned mutual founded in 1884 and headquartered in Coventry, England, offering savings and residential mortgages to millions of members and in January 2025 completing its acquisition of The Co-operative Bank. As an FCA-authorised and PRA-regulated deposit-taker and Account Servicing Payment Service Provider (ASPSP), it participates in UK Open Banking under PSD2 and the Open Banking Implementation Entity (OBIE) standards. It is not one of the CMA9 mandated banks, but operates a public developer portal at developer.coventrybuildingsociety.co.uk that publishes CBS v2.0 Open Banking APIs - Account Information Services (AIS), Payment Initiation Services (PIS), and Confirmation of Funds (CBPII) - conformant to the OBIE Read/Write API Standard, alongside a public FCA Service Metrics open-data endpoint and a sandbox for TPP onboarding. Read/Write access is secured with FAPI-grade OAuth2/OIDC, PSD2 strong customer authentication, and mutual-TLS using Open Banking WAC or eIDAS QWAC certificates, with registered TPP onboarding handled via [email protected].
Real signal across most facets with visible, nameable gaps — the contract exists but is thin, or the portal is good while governance and commercial terms are absent.
API Evangelist profiles Coventry Building Society the way a machine reads it — 9 machine-readable artifacts across 4 APIs, 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 — Coventry Building Society scores 46.1/100 (developing), with a separate agent-readiness read of 74/100 (agent native). The full breakdown is below, followed by every artifact we hold — each card links through to its machine-readable definition on apis.io.
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 2026-07-27 · rubric v0.5
How we profile Coventry Building Society
Each block below is one kind of artifact we hold for Coventry Building Society. 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.
APIs 4
Each API is captured as its own OpenAPI definition — every operation, parameter, and response. This is the single most useful machine-readable description of what an API does, and it's what lets us score, lint, mock, and generate against it without asking the provider for anything.
Individual APIs this provider publishes, each with its own machine-readable definition.
Coventry Building Society Open Data FCA Service Metrics API
Public, unauthenticated OBIE Open Data endpoint publishing FCA service metrics for personal current accounts at Coventry Building Society (CBS v1.0). Live JSON host confirmed re...
Coventry Building Society Account & Transaction Information API (AIS)
OBIE Read/Write Account and Transaction Information Services (AIS) API, CBS v2.0, providing consented third-party read access to account, balance, transaction, standing order, d...
Coventry Building Society Payment Initiation API (PIS)
OBIE Read/Write Payment Initiation Services (PIS) API, CBS v2.0, enabling consented third-party initiation of domestic single, scheduled, standing order, and file payments. FAPI...
Coventry Building Society Confirmation of Funds API (CBPII)
OBIE Read/Write Confirmation of Funds Services (CBPII) API, CBS v2.0, allowing a consented card-based payment instrument issuer to confirm whether funds are available on an acco...
MCP Servers 1
Model Context Protocol servers expose these APIs directly to AI agents. We profile them because agent-native access is the fastest-growing way this provider's capabilities actually get used.
Model Context Protocol servers that expose these APIs to AI agents.
coventry-building-society-mcp.yml
MCP SERVERSecurity Posture 2
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.
Scopes 1
OAuth scopes are the vocabulary of least-privilege access. Profiling them shows exactly what an integration — or an agent acting on a user's behalf — is allowed to do.
OAuth scopes governing access to this provider's APIs.
Agentic Access 1
An x-agentic-access contract marks which operations are safe for an agent to run on its own and which need a human in the loop. It is the difference between an API an agent can use and one it can use safely.
Recommended x-agentic-access execution contracts for AI agents.
Resources
Every other property we hold for Coventry Building Society — 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.
Get Started 1
Portal, sign-up, and the first successful call
Documentation 1
Reference material describing how the API behaves
Agent Surfaces 4
MCP servers, agent skills, and machine-readable catalogs
Design & Contract 6
Pagination, idempotency, versioning, errors, and events
Build 1
SDKs, sample code, and the tooling you integrate with
Access & Security 4
Authentication, authorization, and security posture
Operate 1
Status, limits, changes, and where to get help
Commercial 2
Pricing, plans, and the legal terms of use
Company 2
The organization behind the API
Other 5
Properties that don't map to a standard resource type
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