# Coventry Building Society

**Canonical:** https://apis.io/providers/coventry-building-society/  
**Website:** https://www.coventrybuildingsociety.co.uk/  
**APIs profiled:** 4

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 open.banking@thecoventry.co.uk.

## Kin Score — 44.7 / 100 (developing)

Scored 2026-08-20 under rubric 0.12.0. Trend: flat (+0.0 from 44.7).

| Facet | Score |
|---|---|
| Discoverability | 81.5 |
| Contract Quality | 51.2 |
| Governance | 16.7 |
| Contract Governance | 16.7 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 37.5 |
| Commercial Clarity | 28.9 |
| Access Clarity | 28.9 |

Regulatory layer — **Banking & Open Finance**: 87.3 (matched via tags).

## Agent readiness — 40.4 (agent-ready)

| Dimension | Value |
|---|---|
| Spec Presence | yes |
| Agentic Access | derived |
| Reversibility Documented | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | documented |
| Error Semantics | documented |
| OpenAPI Examples | no |
| Rate Limit Signal | verified |
| Event Surface Described | no |
| Agent Skills | derived |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## APIs (4)

- **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)

- **Coventry Building Society MCP Server**

## Agentic access (1)

- **Coventry Building Society Agentic Access** — 86 operations · 20 acting

## Security (2)

- **Coventry Building Society Authentication** — oauth2 · 2 schemes
- **Coventry Building Society Domain Security** — TLSv1.2 · HSTS · DMARC

## Tags

Financial-Services, Banking, Building Society, Open Banking, PSD2, OBIE, United Kingdom, Payments, Account Information, Confirmation of Funds, Fintech

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