PayZen website screenshot

PayZen

PayZen is a San Francisco-based healthcare fintech that provides AI-powered patient financing — "Care Now, Pay Later" — for hospitals, health systems and large physician groups. Its platform underwrites each patient's ability to pay and issues interest-free, fee-free monthly payment plans and a white-labelable Care Card, with the provider paid up front. PayZen markets pre-built integrations with Epic, Cerner and other major EHR systems and is listed on Epic's Showroom (formerly App Orchard) marketplace, but it publishes no public developer portal, API reference or machine-readable contract: the integration surface is delivered to contracted health systems through the EHR marketplace and an implementation engagement. PayZen LLC is a licensed lender (NMLS 2591891), is SOC 2 Type II certified and operates a Vanta trust portal.

PayZen is profiled on the APIs.io network. Tagged areas include Company, Payments, Healthcare, Patient Financing, and Revenue Cycle Management.

The PayZen catalog on APIs.io includes 1 event-driven AsyncAPI specification.

PayZen’s developer surface includes engineering blog, support, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
25.9/100 emerging ▬ flat Agent 20/100 agent aware saas Full breakdown ↓
scored 2026-09-02 · rubric v0.18.0
0 APIs
CompanyPaymentsHealthcarePatient FinancingRevenue Cycle ManagementLendingFintechElectronic Health Records

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-02 · rubric v0.18.0
Composite quality — 25.9/100 · emerging
Contract Quality 8.8 / 21
Developer Ergonomics 1.2 / 17
Access Clarity 4.5 / 17
Operational Transparency 0.0 / 11
Contract Governance 1.9 / 10
Discoverability 4.9 / 9
Regulatory Posture 3.8 / 15
Agent readiness — 20/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 0 / 10
Documented Reversibility 0 / 6
MCP Server 0 / 12
Machine-Readable Auth 0 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 6 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Surface 0 / 5
Regulatory Posture applies to this provider. Its tags matched the Health regime, so Regulatory Posture carries 15 points of the composite. If this regime is wrong for your business, say so on your provider repo — the applicability map is public and we will correct it.
The six quality facets above are damped to 85 points between them, because the conditional facet above carries the other 15. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 85% of its nominal weight, not 100%. The full arithmetic is at apis.io/rating/.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/payzen: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Pricing Plans 1

Published pricing tiers and plan structures.

Payzen Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Payzen Rate Limits

0 limits

RATE LIMITS

Event Specifications 1

AsyncAPI definitions for this provider's event-driven and streaming APIs.

Payzen Webhooks

ASYNCAPI

Security Posture 2

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

Payzen Domain Security

TLSv1.2 · DMARC

SECURITY

Payzen Trust Center

SOC 2 Type II, HIPAA

SECURITY

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

LLMsTxt
LLMsTxt

Design & Contract 2

Pagination, idempotency, versioning, errors, and events

Conformance
Conformance
 Lifecycle
Lifecycle

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 TrustCenter
TrustCenter
 Compliance
Compliance

Operate 3

Status, limits, changes, and where to get help

Support
Support
 StatusPage
StatusPage
 RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy
PrivacyPolicy
 Plans
Plans

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: payzen
name: PayZen
description: 'PayZen is a San Francisco-based healthcare fintech that provides AI-powered patient financing — "Care Now, Pay
  Later" — for hospitals, health systems and large physician groups. Its platform underwrites each patient''s ability to pay
  and issues interest-free, fee-free monthly payment plans and a white-labelable Care Card, with the provider paid up front.
  PayZen markets pre-built integrations with Epic, Cerner and other major EHR systems and is listed on Epic''s Showroom (formerly
  App Orchard) marketplace, but it publishes no public developer portal, API reference or machine-readable contract: the integration
  surface is delivered to contracted health systems through the EHR marketplace and an implementation engagement. PayZen LLC
  is a licensed lender (NMLS 2591891), is SOC 2 Type II certified and operates a Vanta trust portal.'
url: https://raw.githubusercontent.com/api-evangelist/payzen/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - rate-limits
  - security
  generated: '2026-09-02'
  method: derived
image: https://payzen.com/wp-content/uploads/2023/10/cropped-cropped-payzen-favicon-3-192x192.png
x-type: company
x-source: harvest:secondary-market
specificationVersion: '0.20'
created: '2026-08-26'
modified: '2026-08-26'
tags:
- Company
- Payments
- Healthcare
- Patient Financing
- Revenue Cycle Management
- Lending
- Fintech
- Electronic Health Records
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/payzen-domain-security.yml
- type: Website
  url: https://payzen.com/
- type: Blog
  url: https://payzen.com/blog/
- type: Support
  url: https://payzen.com/contact/
- type: PrivacyPolicy
  url: https://payzen.com/privacy/
- type: StatusPage
  url: https://status.payzen.com/
- type: LLMsTxt
  url: llms/payzen-llms.txt
- type: TrustCenter
  url: security/payzen-trust-center.yml
- type: Compliance
  url: security/payzen-trust-center.yml
- type: Conformance
  url: conformance/payzen-conformance.yml
- type: Lifecycle
  url: lifecycle/payzen-lifecycle.yml
- type: Plans
  url: plans/payzen-plans-pricing.yml
- type: RateLimits
  url: rate-limits/payzen-rate-limits.yml
x-enrichment:
  date: '2026-08-26'
  status: minimal
  artifacts_added: 9
  pass: local-v1
x-coverage:
  state: gated
  reason: marketplace-only
  detail: PayZen's own status page monitors business services literally named "API" and "Webhooks", but the only place that
    integration surface is listed is Epic's Showroom marketplace, which is a login-gated React application; payzen.com has
    no developer section, api.payzen.com and developer.payzen.com do not resolve in DNS, and docs.payzen.com 302s into a staging
    app host rather than documentation.
  evidence:
  - url: https://status.payzen.com/
    status: 200
  - url: https://payzen.com/docs
    status: 404
  - url: https://showroom.epic.com/Search?q=PayZen
    status: 200
  - url: https://docs.payzen.com/docs/
    status: 302
  checked: '2026-08-26'

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