Klara website screenshot

Klara

Klara is a US healthcare patient-engagement and communication platform, now part of Modernizing Medicine (ModMed), that gives medical practices two-way secure messaging, patient texting, appointment reminders and scheduling, intake and forms, telemedicine, and automated workflow tools to reduce phone volume and staff workload. Klara markets integration with 50+ EHR and practice-management systems, but it does not publish its own self-serve public developer API, FHIR CapabilityStatement, or downloadable OpenAPI. Its parent, ModMed, operates a partner-gated developer program at portal.api.modmed.com covering an ONC-certified HL7 FHIR R4 API with SMART-on-FHIR (built for the 21st Century Cures Act, US Core, OAuth2, bulk NDJSON export) plus a proprietary FHIR API for the EMA and gGastro EHR/PM platforms and a Synapsys App Marketplace. That certified API surface belongs to ModMed's EHR products, not to the Klara messaging product itself. Home market is the United States.

Klara is profiled on the APIs.io network. Tagged areas include Healthcare, United States, Patient Engagement, Patient Communication, and Secure Messaging.

Klara’s developer surface includes support, engineering blog, signup flow, and 18 more developer resources.

24.5/100 emerging ▬ flat Agent 3/100 human only Full breakdown ↓
scored 2026-08-17 · rubric v0.11.0
0 APIs
HealthcareUnited StatesPatient EngagementPatient CommunicationSecure MessagingTelehealthSchedulingEHR Integration

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-17 · rubric v0.11.0
Composite quality — 24.5/100 · emerging
Contract Quality 0.0 / 21
Developer Ergonomics 1.1 / 17
Commercial Clarity 7.2 / 17
Operational Transparency 3.5 / 11
Governance 1.3 / 10
Discoverability 5.8 / 9
Regulatory Posture 5.6 / 15
Agent readiness — 3/100 · human only
Machine-Readable Contract 0 / 18
Agentic Access Contract 0 / 10
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 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
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/. This rating is computed from github.com/api-evangelist/klara: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

Pricing Plans 1

Published pricing tiers and plan structures.

Klara Plans Pricing

0 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Klara Rate Limits

0 limits

RATE LIMITS

Security Posture 2

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

Klara Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Klara Vulnerability Disclosure

disclosure policy published

SECURITY

Resources

Get Started 2

Portal, sign-up, and the first successful call

Agent Surfaces 2

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 3

Pagination, idempotency, versioning, errors, and events

Build 2

SDKs, sample code, and the tooling you integrate with

Access & Security 4

Authentication, authorization, and security posture

Operate 3

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 2

The organization behind the API

Source (apis.yml)

apis.yml Raw ↑
aid: klara
url: https://raw.githubusercontent.com/api-evangelist/klara/refs/heads/main/apis.yml
name: Klara
kind: company
description: Klara is a US healthcare patient-engagement and communication platform, now part of Modernizing Medicine (ModMed),
  that gives medical practices two-way secure messaging, patient texting, appointment reminders and scheduling, intake and
  forms, telemedicine, and automated workflow tools to reduce phone volume and staff workload. Klara markets integration with
  50+ EHR and practice-management systems, but it does not publish its own self-serve public developer API, FHIR CapabilityStatement,
  or downloadable OpenAPI. Its parent, ModMed, operates a partner-gated developer program at portal.api.modmed.com covering
  an ONC-certified HL7 FHIR R4 API with SMART-on-FHIR (built for the 21st Century Cures Act, US Core, OAuth2, bulk NDJSON
  export) plus a proprietary FHIR API for the EMA and gGastro EHR/PM platforms and a Synapsys App Marketplace. That certified
  API surface belongs to ModMed's EHR products, not to the Klara messaging product itself. Home market is the United States.
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
tags:
- Healthcare
- United States
- Patient Engagement
- Patient Communication
- Secure Messaging
- Telehealth
- Scheduling
- EHR Integration
created: '2026-07-24'
modified: '2026-08-15'
specificationVersion: '0.19'
apis: []
common:
- type: DomainSecurity
  url: security/klara-domain-security.yml
- type: Conformance
  url: conformance/klara-conformance.yml
- type: Compliance
  url: https://www.modmed.com/what-we-do/patient-communication/
- type: LLMsTxt
  url: llms/klara-llms.txt
- type: WellKnown
  url: well-known/klara-well-known.yml
- type: Packages
  url: packages/klara-packages.yml
- type: Lifecycle
  url: lifecycle/klara-lifecycle.yml
- type: Components
  url: components/klara-components.yml
- type: Plans
  url: plans/klara-plans-pricing.yml
- type: RateLimits
  url: rate-limits/klara-rate-limits.yml
- type: VulnerabilityDisclosure
  url: security/klara-vulnerability-disclosure.yml
- type: Security
  url: https://www.modmed.com/security/
- type: GitHubOrganization
  url: https://github.com/klara
- type: Website
  url: https://www.klara.com/
- type: Login
  url: https://doctor.klara.com/
- type: Support
  url: https://support.klara.com/s/
- type: StatusPage
  url: https://status.klara.com/
- type: Blog
  url: https://www.modmed.com/resources/blog
- type: SignUp
  url: https://www.modmed.com/schedule-demo/
- type: TermsOfService
  url: https://www.modmed.com/klara-terms-of-service/
- type: PrivacyPolicy
  url: https://www.modmed.com/klara-privacy/
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
x-enrichment:
  date: '2026-08-15'
  status: minimal
  artifacts_added: 8
  pass: local-v1
x-coverage:
  state: gated
  reason: marketplace-only
  detail: Klara has no developer site of its own — developers.klara.com, docs.klara.com and developer.klara.com do not resolve
    in DNS, klara.com 302s every path to the ModMed product page, and the live first-party API host api.klara.com 404s every
    discovery path because it is the private backend for doctor.klara.com; the only Klara integration surface published anywhere
    is a partner-app listing inside ModMed's synapSYS marketplace, backed by the parent's portal.api.modmed.com FHIR/EMA APIs.
  evidence:
  - url: https://klara.com/
    status: 302
  - url: https://developers.klara.com/
    status: 0
  - url: https://api.klara.com/openapi.json
    status: 404
  - url: https://support.klara.com/en/articles/4210809-getting-started-with-modernizing-medicine-integration
    status: 401
  - url: https://synapsys.modmed.com/s/synapsys/0TU4M0000004CCRWA2/klara
    status: 200
  checked: '2026-08-15'