# Capital One **Canonical:** https://apis.io/providers/capital-one/ **Website:** https://www.capitalone.com/ **APIs profiled:** 14 Capital One is a US money-center bank and financial services company offering credit cards, checking and savings accounts, loans, and auto financing. Through the Capital One DevExchange developer program the bank publishes a catalog of partner-facing production APIs for account lookup, transaction authorizations, credit offers, customer transactions, credit card applications, auto financing, proactive prescreen, partner account summary, shop with rewards, and public key sharing for client authentication. Access is secured with OAuth 2.0 and a public sandbox supports pre-production integration, with production access gated behind partner approval. Developer documentation is HTML-only (the portal is a single-page app); Capital One does not publish downloadable OpenAPI specifications. As an FDX member, Capital One also supports consumer-permissioned open-finance data access through aggregators in the US voluntary open-banking context. ## Kin Score — 44.8 / 100 (developing) Scored 2026-08-21 under rubric 0.12.0. Trend: flat (+0.0 from 44.8). | Facet | Score | |---|---| | Discoverability | 81.5 | | Contract Quality | 38.9 | | Governance | 18.2 | | Contract Governance | 18.2 | | Operational Transparency | 18.4 | | Developer Ergonomics | 57.1 | | Commercial Clarity | 40.8 | | Access Clarity | 40.8 | Regulatory layer — **Banking & Open Finance**: 49.4 (matched via tags). ## Agent readiness — 29.5 (agent-aware) | Dimension | Value | |---|---| | Spec Presence | yes | | Agentic Access | no | | Reversibility Documented | no | | MCP Server | no | | Auth Clarity | yes | | Idempotency | no | | Error Semantics | no | | OpenAPI Examples | no | | Rate Limit Signal | documented | | Event Surface Described | no | | Agent Skills | no | | Well Known Catalog | no | | Consent Identity | yes | | Agent Card | no | | Dry Run Mode | no | ## Access Partner-gated developer program — onboarding: unknown, pricing: unknown, trial: no (confidence: medium). ## APIs (14) - **Capital One Account Lookup API** — The Capital One Account Lookup API is a DevExchange product that lets approved partners resolve and retrieve consumer account information such as balances, transaction history, ... - **Capital One Authorizations API** — The Capital One Authorizations API lets approved partners programmatically validate and authorize financial transactions against Capital One's platform in real time. It supports... - **Capital One Credit Offers API** — The Capital One Credit Offers API provides approved partners programmatic access to Capital One credit card offers, including rewards programs, interest rates, fees, and eligibi... - **Capital One Customer Transactions** — The Capital One Customer Transactions product exposes consumer-permissioned transaction data so approved partners can retrieve and reconcile a customer's Capital One transaction... - **Capital One Data Protection and Client Authentication Public Key Sharing API** — The Capital One Data Protection and Client Authentication Public Key Sharing API lets integrating clients securely exchange public keys with Capital One to establish encrypted, ... - **Capital One Digital Auto Financing Credit Application API** — The Capital One Digital Auto Financing Credit Application API lets approved partners such as dealers and auto-marketplaces submit and process auto loan applications through Capi... - **Capital One Enhanced Decisioning Data API** — The Capital One Enhanced Decisioning Data API gives approved partners access to data signals that support credit, risk, and fraud decisioning workflows. Partners use it to enric... - **Capital One In-Store Credit Card Payments API** — The Capital One In-Store Credit Card Payments API lets merchants process Capital One credit card payments directly within their in-store point-of-sale flows. It supports accepti... - **Capital One POS Credit Card Application API** — The Capital One POS Credit Card Application API lets merchants embed a Capital One credit card application directly into their point-of-sale checkout experience, so customers ca... - **Capital One Partner Account Summary API** — The Capital One Partner Account Summary API provides approved partners consumer-permissioned access to account summary information such as balances, transaction history, and pen... - **Capital One Pre-Application Orchestrator API** — The Capital One Pre-Application Orchestrator API coordinates the pre-application steps for financial products such as loans and credit cards, including gathering and validating ... - **Capital One Real-Time Proactive Prescreen API** — The Capital One Real-Time Proactive Prescreen API lets approved partners assess consumer creditworthiness in real time to support targeted, pre-screened credit offers. Partners ... - **Capital One Retrieve Consumer Bank Products API** — The Capital One Retrieve Consumer Bank Products API lets approved partners access information about a consumer's Capital One banking products such as credit cards, checking acco... - **Capital One Shop with Rewards API** — The Capital One Shop with Rewards API lets partners integrate Capital One credit card reward points and benefits into online shopping experiences, so cardholders can unlock deal... ## Security (3) - **Capital One Authentication** — oauth2 · 1 scheme - **Capital One Domain Security** — TLSv1.3 · DMARC - **Capital One Vulnerability Disclosure** — Hackerone · security.txt · contact published ## Plans (1) - **Capital One Plans Pricing** ## Tags Auto Finance, Authorizations, Banking, Credit Cards, Credit Offers, DevExchange, Financial-Services, FDX, Open Banking, Authentication, Payments, Rewards, United States, Fortune 500 --- Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/capital-one/). Scores are computed from the provider's own public artifacts under a published rubric.