Cardless

Cardless, Inc. is a San Francisco fintech that operates an embedded co-branded credit card platform, letting consumer brands launch and run their own credit card programs natively inside their own apps and websites. The platform pairs a partner API surface with pre-built components covering the full credit journey — application and identity verification, real-time decisioning, checkout with instant virtual cards, card management and transaction disputes — while Cardless handles issuing-bank relationships, card production, underwriting, fraud, KYC/AML compliance, servicing and support behind the scenes. It is network-agnostic across Visa, Mastercard and American Express. Named partners include Coinbase (Coinbase One Card), Bilt, Qatar Airways Privilege Club, Alibaba.com, LATAM Airlines, Avianca LifeMiles, TAP Air Portugal and Avelo Airlines. Developer documentation at docs.cardless.com is gated behind a partner login, so no public OpenAPI, SDKs or sandbox credentials are published.

Cardless publishes 2 APIs on the APIs.io network. Tagged areas include Company, Financial Services, Fintech, Credit Cards, and Card Issuing.

Cardless’ developer surface includes documentation, engineering blog, support, signup flow, authentication, and 15 more developer resources.

29.1/100 thin ▬ flat Agent 23/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
2 APIs 1 MCP Servers
CompanyFinancial ServicesFintechCredit CardsCard IssuingEmbedded FinancePaymentsBanking as a ServiceLendingCo-Branded CardsLoyalty

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 29.1/100 · thin
Contract Quality 0.0 / 25
Developer Ergonomics 8.7 / 20
Commercial Clarity 6.8 / 20
Operational Transparency 0.0 / 13
Governance 0.4 / 12
Discoverability 8.7 / 10
Agent readiness — 23/100 · agent aware
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 0 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
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/cardless: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

Individual APIs this provider publishes, each with its own machine-readable definition.

Cardless Partner API

The Cardless partner API surface used by brands to embed a co-branded credit card program: partner authentication (Basic-auth exchange of a partner-signed JWT for a bearer acces...

Cardless Docs MCP Server

A remote Model Context Protocol server published by Cardless at docs.cardless.com/mcp (Mintlify-hosted). It answers tools/list anonymously and exposes three read-oriented tools ...

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

cardless-mcp.yml

MCP SERVER

Security Posture 2

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

Cardless Authentication

http/oauth2 · 3 schemes

SECURITY

Cardless Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Cardless Scopes

1 scope · authorizationCode/clientCredentials/refreshToken

1 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

Documentation 1

Reference material describing how the API behaves

Agent Surfaces 3

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 4

Pagination, idempotency, versioning, errors, and events

Access & Security 3

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 3

The organization behind the API

Other 1

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
aid: cardless
name: Cardless
description: Cardless, Inc. is a San Francisco fintech that operates an embedded co-branded credit card platform, letting
  consumer brands launch and run their own credit card programs natively inside their own apps and websites. The platform
  pairs a partner API surface with pre-built components covering the full credit journey — application and identity verification,
  real-time decisioning, checkout with instant virtual cards, card management and transaction disputes — while Cardless handles
  issuing-bank relationships, card production, underwriting, fraud, KYC/AML compliance, servicing and support behind the scenes.
  It is network-agnostic across Visa, Mastercard and American Express. Named partners include Coinbase (Coinbase One Card),
  Bilt, Qatar Airways Privilege Club, Alibaba.com, LATAM Airlines, Avianca LifeMiles, TAP Air Portugal and Avelo Airlines.
  Developer documentation at docs.cardless.com is gated behind a partner login, so no public OpenAPI, SDKs or sandbox credentials
  are published.
url: https://raw.githubusercontent.com/api-evangelist/cardless/refs/heads/main/apis.yml
image: https://framerusercontent.com/images/hm4RTByVdin3oyQTHY2rMm9doQ.jpg
x-type: company
x-source: harvest:secondary-market
x-secondary-market-listing: https://forgeglobal.com/cardless_stock/
x-tier: profiled
x-tier-reason: enrichment-pipeline
specificationVersion: '0.20'
created: '2026-08-01'
modified: '2026-08-01'
x-enrichment:
  date: '2026-08-01'
  status: enriched
  artifacts_added: 13
  pass: local-v1
tags:
- Company
- Financial Services
- Fintech
- Credit Cards
- Card Issuing
- Embedded Finance
- Payments
- Banking as a Service
- Lending
- Co-Branded Cards
- Loyalty
apis:
- aid: cardless:partner-api
  name: Cardless Partner API
  description: 'The Cardless partner API surface used by brands to embed a co-branded credit card program: partner authentication
    (Basic-auth exchange of a partner-signed JWT for a bearer access token), application submission and decisioning, account
    servicing, payments, transactions and disputes. Documentation and the OpenAPI fragments that back it are gated behind
    a partner login at docs.cardless.com; the production API host answers unauthenticated requests with HTTP 401.'
  humanURL: https://docs.cardless.com/
  baseURL: https://api.cardless.com/
  tags:
  - Credit Cards
  - Card Issuing
  - Embedded Finance
  - Payments
  properties:
  - type: Documentation
    url: https://docs.cardless.com/
  - type: Authentication
    url: authentication/cardless-authentication.yml
  - type: Conventions
    url: conventions/cardless-conventions.yml
- aid: cardless:docs-mcp
  name: Cardless Docs MCP Server
  description: A remote Model Context Protocol server published by Cardless at docs.cardless.com/mcp (Mintlify-hosted). It
    answers tools/list anonymously and exposes three read-oriented tools over the Cardless documentation corpus — documentation
    search, a read-only virtualized documentation filesystem, and docs feedback submission. It also advertises OAuth 2.0 authorization-server
    and protected-resource metadata with a single mcp:search scope. This is a documentation-search MCP server, not an MCP
    projection of the Cardless partner API.
  humanURL: https://docs.cardless.com/
  baseURL: https://docs.cardless.com/mcp
  tags:
  - MCP
  - Documentation
  - Agents
  properties:
  - type: MCPServer
    url: mcp/cardless-mcp.yml
  - type: OAuthScopes
    url: scopes/cardless-scopes.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://www.cardless.com/
- type: DeveloperPortal
  url: https://docs.cardless.com/
- type: Documentation
  url: https://docs.cardless.com/
- type: Blog
  url: https://www.cardless.com/blog
- type: Support
  url: https://www.cardless.com/help
- type: SignUp
  url: https://app.cardless.com/login
- type: TermsOfService
  url: https://legal.cardless.com/terms_of_service/default/terms_of_service.pdf
- type: PrivacyPolicy
  url: https://legal.cardless.com/privacy_policy/default/privacy_policy.pdf
- type: Customers
  url: https://www.cardless.com/customers
- type: Careers
  url: https://www.cardless.com/careers
- type: MCPServer
  url: mcp/cardless-mcp.yml
- type: WellKnown
  url: well-known/cardless-well-known.yml
- type: OAuthScopes
  url: scopes/cardless-scopes.yml
- type: Authentication
  url: authentication/cardless-authentication.yml
- type: Conventions
  url: conventions/cardless-conventions.yml
- type: Conformance
  url: conformance/cardless-conformance.yml
- type: Lifecycle
  url: lifecycle/cardless-lifecycle.yml
- type: Components
  url: components/cardless-components.yml
- type: DomainSecurity
  url: security/cardless-domain-security.yml
- type: LLMsTxt
  url: llms/cardless-llms.txt