Kaiser Permanente

One of the largest nonprofit health plans in the United States integrating health insurance with healthcare delivery. Serves over 12 million members through its network of hospitals, medical offices, and health plan services. Publishes a patient access FHIR API at kp.org/fhir in compliance with the CMS Interoperability and Patient Access Final Rule.

Kaiser Permanente is listed with 1 API on the APIs.io network. Tagged areas include Healthcare, Insurance, Health Insurance, Hospitals, and FHIR.

Kaiser Permanente’s developer surface includes developer portal, engineering blog, and 4 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

7.3/100 minimal ▬ flat Agent 0/100 human only Front door AI 1/6 silent Heartbeat 100/100 alive Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 API

Healthcare Insurance Health Insurance Hospitals FHIR Interoperability

Kin Score

Kin Score How this is scored →
scored 2026-11-06 · rubric v0.27.0

Composite quality — 7.3/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 2.0 / 17

Access Clarity 0.0 / 17

Operational Transparency 0.3 / 11

Contract Governance 0.0 / 10

Discoverability 4.9 / 9

Regulatory Posture 0.7 / 15

Agent readiness — 0/100 · human only

Machine-Readable Contract 0 / 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 0 / 7

Typed Event Surface 0 / 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 Well-Known Document 0 / 5

Pagination 5 / 5

Distinct Operations 3 / 3

MCP Tool Quality 6 / 6

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.

Create-or-Update Ergonomics could not be measured. We hold no machine-readable contract for this provider to read, so there is nothing to measure a write surface against. Excluded rather than scored zero: never-measured and measured-empty are different facts. Publishing an OpenAPI is what makes this facet — and several others — scorable at all.

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
Idempotency +9 pts — OpenAPI mutating operations declare an idempotency key — a header, a request-body property, or a named de-duplication token whose own description says so (verified); else common[].type matches /idempoten/i (documented)
Stable Error Semantics +8 pts — OpenAPI $refs a shared error schema across 4xx/5xx responses (verified), else common[].type includes ErrorCatalog / ErrorCodes / DeclineCodes

13 more unmet checks in the Agent Readiness table above.

Kin Score — facets with the most composite points still available (weight × headroom):

Contract Quality scores 0.0 — up to +25.0 composite points
Access Clarity scores 0.0 — up to +20.0 composite points
Developer Ergonomics scores 11.9 — up to +17.6 composite points

Each check links to what satisfies it. Publish the artifact, or tell us where it already lives, and the score moves on the next scoring run.

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 the provider profile at artifacts.apis.io/kaiser-permanente/apis.yml: open an issue on github.com/api-evangelist/kaiser-permanente to ask a question or point us at an artifact you publish. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Markets this provider is in provisional

The Kin Score Market layer reads a provider inside its market: its position, and how deep its integrations go. Depth is only comparable within a position. Provisional and unweighted: not part of the Kin Score or agent readiness.

Market	Position	Depth	Registered MCP server	Declares compatibility
Payer Interoperability (CAQH CORE, X12, Da Vinci, WEDI)	standard	17.2 (thin)	-	-

Registered MCP server and declares compatibility are report only — not weighted. Undeclared means we found nothing we can read, so there is no number: we never infer integrations.

Standards implemented 1

Standards this provider implements or carries. De facto ones are profiled and measured by the API Commons; formal ones come from the standards directory and are linked by the provider's own tags. The evidence column says how each claim was established — not that it was made.

HL7 FHIR

tagged — the provider's own APIs.json carries the standard as a tag; implementation not verified

APIs 1

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

Kaiser Permanente Patient Access FHIR API

Kaiser Permanente provides a patient access FHIR API supporting the CMS Interoperability and Patient Access Final Rule. Authenticated members and their authorized third-party ap...

Security Posture 1

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

Kaiser Permanente Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Resources

Get Started 1

Portal, sign-up, and the first successful call

Portal

Portal

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization

GitHubOrganization

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Company 3

The organization behind the API

LinkedIn

Website

Website

Blog

Blog

Source (apis.yml)

aid: kaiser-permanente
url: https://raw.githubusercontent.com/api-evangelist/kaiser-permanente/refs/heads/main/apis.yml
name: Kaiser Permanente
type: Index
deliveryModel:
  model: unknown
  open_source: false
  commercial: false
  callable_host: false
  label: Delivery model not determined — needs a product licence on record
  confidence: low
  source:
  - none
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - security
  generated: '2026-11-06'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kaiser-permanente.png
tags:
- Healthcare
- Insurance
- Health Insurance
- Hospitals
- FHIR
- Interoperability
description: One of the largest nonprofit health plans in the United States integrating health insurance with healthcare delivery.
  Serves over 12 million members through its network of hospitals, medical offices, and health plan services. Publishes a
  patient access FHIR API at kp.org/fhir in compliance with the CMS Interoperability and Patient Access Final Rule.
created: '2026-05-05'
modified: '2026-05-16'
specificationVersion: '0.23'
apis:
- aid: kaiser-permanente:kaiser-permanente-fhir
  name: Kaiser Permanente Patient Access FHIR API
  description: Kaiser Permanente provides a patient access FHIR API supporting the CMS Interoperability and Patient Access
    Final Rule. Authenticated members and their authorized third-party applications can retrieve clinical and claims data
    (encounters, conditions, medications, observations, allergies, coverage) through standards-based FHIR resources.
  humanURL: https://kp.org/fhir
  tags:
  - FHIR
  - Patient Access
  - Interoperability
  - CMS
  - Healthcare
  properties:
  - url: https://kp.org/fhir
    type: Portal
common:
- type: DomainSecurity
  url: security/kaiser-permanente-domain-security.yml
- type: GitHubOrganization
  url: https://github.com/kaiserpermanente
- type: LinkedIn
  url: https://www.linkedin.com/company/kaiser-permanente
- type: Website
  url: https://www.kaiserpermanente.org/
- type: Portal
  url: https://kp.org/fhir
- url: https://about.kaiserpermanente.org/news
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

Kaiser Permanente API — frequently asked questions

Does Kaiser Permanente have an API?

Yes. APIs.io lists 1 API from Kaiser Permanente, including Kaiser Permanente Patient Access FHIR API.

Is the Kaiser Permanente API ready for AI agents?

Kaiser Permanente has a Kin Score of 7.3 out of 100 (minimal) and an Agent Readiness score of 0.0 (human-only), scored by API Evangelist on 2026-11-06.

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Tools for providers

9 MCP tools reach this

find_providersBrowse and filter every provider in the catalog.
get_provider_artifactsEvery artifact this provider publishes, grouped by type.
get_provider_operationsEvery operation across all of their OpenAPIs — one call instead of parsing every spec.
get_provider_toolsEvery MCP tool they ship, with the operation each wraps.
get_provider_evidenceHow each part of their score was established. Free — the basis for a claim should not sit behind it.
get_provider_ratingPRO — composite, band, trend and facet scores.
apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
resolveTurn a domain, URL or GitHub org into the provider it belongs to.
find_cohortsEvery scored population of providers in the catalog.

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