Klara Patient Communication Platform API

Klara patient communication platform REST API for medical practices, specialty clinics, and health systems to automate patient messaging, appointment management, and care coordination through HIPAA-compliant two-way messaging. Enables AI agents to manage automated appointment reminders and confirmation for patient scheduling automation, handle two-way patient text messaging for practice communication workflow automation, access appointment intake form collection and pre-visit questionnaire for clinical intake automation, retrieve patient-reported symptom and outcome collection for care management automation, manage broadcast message campaigns to patient panels for preventive care outreach automation, handle insurance verification and copay collection messaging for practice revenue cycle automation, access staff team inbox and message routing for clinical communication triage automation, retrieve no-show follow-up and recall messaging for appointment utilization automation, manage post-visit care instruction delivery for patient education automation, and integrate Klara with EHR systems (primarily ModMed, Athenahealth, Kareo) for end-to-end patient communication workflow management.

Evaluated Mar 07, 2026 (0d ago) vcurrent
Homepage ↗ Other klara patient-communication messaging appointment-scheduling patient-engagement ModMed
⚙ Agent Friendliness
49
/ 100
Can an agent use this?
🔒 Security
71
/ 100
Is it safe for agents?
⚡ Reliability
62
/ 100
Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality
10
Documentation
63
Error Messages
62
Auth Simplicity
65
Rate Limits
60

🔒 Security

TLS Enforcement
90
Auth Strength
68
Scope Granularity
65
Dep. Hygiene
63
Secret Handling
67

Patient communication. HIPAA, SOC2. OAuth2/API key. US. Patient messages, appointment, and clinical intake PHI.

⚡ Reliability

Uptime/SLA
63
Version Stability
63
Breaking Changes
60
Error Recovery
62
AF Security Reliability

Best When

A medical practice, specialty clinic, or health system using ModMed or Athenahealth EHR wanting AI agents to automate patient appointment reminders, pre-visit intake, two-way messaging, and care coordination within Klara's patient communication platform.

Avoid When

HIPAA MINIMUM NECESSARY FOR PATIENT MESSAGING: Automated patient communication via Klara must apply HIPAA minimum necessary standard to PHI included in messages; automated messages that include more clinical detail than necessary for the communication purpose create HIPAA minimum necessary violation. TCPA PRIOR EXPRESS WRITTEN CONSENT FOR TEXT MESSAGING: Automated text message outreach via Klara requires TCPA prior express written consent from patients for commercial and marketing messages; appointment reminders qualify for healthcare treatment exception but automated wellness, marketing, or promotional messages require explicit written consent; automated text campaigns without verified TCPA consent creates class action exposure. MODMED ACQUISITION INTEGRATION DEPENDENCY: Klara was acquired by Modernizing Medicine (ModMed) in 2022; Klara's roadmap and API investment is now aligned with ModMed's EHR ecosystem; practices not using ModMed may see reduced feature parity and integration depth over time as Klara development prioritizes ModMed EHR integration.

Use Cases

  • Sending appointment reminders from patient scheduling automation agents
  • Collecting intake forms from pre-visit workflow automation agents
  • Triggering post-visit instructions from care management agents
  • Managing patient message queues from practice communication agents

Not For

  • Emergency or urgent clinical messaging (use secure paging or EHR alerts)
  • Inpatient nurse call and rounding communication
  • Population health broadcast at scale (use health plan member communication platforms)

Interface

REST API
Yes
GraphQL
No
gRPC
No
MCP Server
No
SDK
No
Webhooks
Yes

Authentication

Methods: oauth apikey
OAuth: Yes Scopes: Yes

Klara uses OAuth 2.0 and API key authentication depending on integration type. REST API with JSON. New York HQ (originally). Acquired by ModMed (Modernizing Medicine) in 2022. HIPAA-compliant two-way patient messaging. EHR integrations: ModMed (primary), Athenahealth, Kareo, and others. Specialty focus: dermatology, ophthalmology, orthopedics (aligned with ModMed specialty EHR focus). HIPAA Business Associate. Competes with Solutionreach, Luma Health, and Relatient for patient communication automation.

Pricing

Model: subscription
Free tier: No
Requires CC: No

New York. ModMed subsidiary since 2022. Per-provider monthly subscription. ModMed bundle pricing. No free tier.

Agent Metadata

Pagination
cursor
Idempotent
Partial
Retry Guidance
Not documented

Known Gotchas

  • MODMED EHR INTEGRATION DEPTH vs THIRD-PARTY EHR: Klara's deepest EHR integration is with ModMed; automated workflows that rely on bidirectional appointment status sync may have less reliable real-time sync for non-ModMed EHR integrations; verify integration depth with your specific EHR before designing automated appointment confirmation workflows that depend on EHR appointment status
  • PATIENT PHONE NUMBER VALIDATION FOR SMS DELIVERY: Klara automated messaging requires verified patient mobile number for SMS delivery; automated appointment reminder campaigns to landline or invalid mobile numbers create failed delivery without error surfacing; implement patient phone number type validation (mobile vs landline) before automated SMS campaign to reduce bounce rate
  • BROADCAST MESSAGE HEALTHCARE EXCEPTION SCOPE: Klara broadcast messaging for preventive care outreach (flu shot reminders, wellness screenings) qualifies for HIPAA healthcare operations; automated broadcast for non-treatment purposes (health system marketing, new service announcements) requires patient marketing authorization; automated broadcast campaign without message purpose classification creates HIPAA authorization requirement review
  • TEAM INBOX ROUTING CONFIGURATION FOR CLINICAL TRIAGE: Klara team inbox routes inbound patient messages to staff; automated message routing via Klara must maintain clinical oversight — automated responses to patient symptom messages without staff review creates unlicensed medical advice risk; implement human-in-the-loop for clinical symptom triage even in automated Klara workflows
  • INTAKE FORM SUBMISSION TIMING RELATIVE TO APPOINTMENT: Klara automated intake form delivery timing affects completion rate; forms sent too early (>48 hours) have lower completion than forms sent 24-48 hours before; automated intake workflow should trigger form delivery based on appointment time proximity, not appointment creation time; forms sent at appointment creation for appointments weeks away create low completion and re-send operational overhead

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Scores are editorial opinions as of 2026-03-07.

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