Kno2 website screenshot

Kno2

Kno2 provides Interoperability as a Service for healthcare - a single Communication API to SEND, RECEIVE, and FIND patient information across the healthcare ecosystem. One connection reaches Direct Secure Messaging, clinical document exchange, HL7 FHIR resources, HL7 V2.x, cloud fax, and national record location and retrieval through Kno2's private network, Carequality, eHealth Exchange, and TEFCA (Kno2 is a federally designated QHIN). API access is partner/enterprise gated - integrators are provisioned a per-subscription tenant host with OAuth2 client-credentials keys and an IP allowlist; a staging sandbox is available through the Kno2 Developer Program.

Kno2 publishes 5 APIs on the APIs.io network, including Attachments API, Authentication API, Directory API, and 2 more. Tagged areas include Healthcare Interoperability, Clinical Records, Health Information Exchange, Direct Secure Messaging, and FHIR.

Kno2’s developer surface includes authentication, documentation, and 8 more developer resources.

🌐 Visit website 📡 Source on GitHub
34.5/100 thin ▬ flat Agent 34/100 agent aware Full breakdown ↓
scored 2026-08-05 · rubric v0.9.1
AccessFreemiumSelf serve⚡ Free to try
7 APIs
Healthcare InteroperabilityClinical RecordsHealth Information ExchangeDirect Secure MessagingFHIRClinical DocumentsPatient RecordsHealthcareHIECare CoordinationQHINTEFCACarequality

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-08-05 · rubric v0.9.1
Composite quality — 34.5/100 · thin
Contract Quality 16.1 / 25
Developer Ergonomics 3.9 / 20
Commercial Clarity 5.8 / 20
Operational Transparency 4.8 / 13
Governance 0.0 / 12
Discoverability 7.4 / 10
Agent readiness — 34/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 7 / 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
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/kno2: 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 7

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

Kno2 FHIR API

HL7 FHIR (DSTU3/R4) resource query and retrieval at scale, including USCDI data classes and patient demographic search, brokered through Kno2's gateway to Carequality and nation...

Kno2 Patient Record Query API

On-demand patient record location and retrieval across national networks - Kno2's private network, Carequality, eHealth Exchange, and TEFCA (Kno2 is a designated QHIN). Find a p...

Kno2 Attachments API

Upload, retrieve, and mark clinical document attachments.

Kno2 Authentication API

OAuth2 client-credentials token issuance.

Kno2 Directory API

Validate Direct addresses and list document types.

Kno2 Intake API

RECEIVE surface - search, retrieve, and process inbound messages.

Kno2 Messaging API

SEND surface - draft, populate, attach, and send messages.

Scroll for all 7

Open Collections 1

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

Kno2 Communication API

OPEN COLLECTION

Pricing Plans 1

Published pricing tiers and plan structures.

Kno2 Plans Pricing

2 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Kno2 Rate Limits

3 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Kno2 Finops

FINOPS

Security Posture 2

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

Kno2 Authentication

oauth2/http · 3 schemes

SECURITY

Kno2 Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Kno2 Agentic Access

12 operations · 7 acting

12 operations · 7 acting

AGENTIC

Resources

Documentation 1

Reference material describing how the API behaves

Documentation
Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 1

SDKs, sample code, and the tooling you integrate with

GitHubOrganization
GitHubOrganization

Access & Security 2

Authentication, authorization, and security posture

DomainSecurity
DomainSecurity
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

RateLimits
RateLimits

Commercial 2

Pricing, plans, and the legal terms of use

Plans
Plans
 FinOps
FinOps

Company 2

The organization behind the API

LinkedIn
LinkedIn
 Website
Website

Source (apis.yml)

apis.yml Raw ↑ 
aid: kno2
url: https://raw.githubusercontent.com/api-evangelist/kno2/refs/heads/main/apis.yml
name: Kno2
kind: company
description: Kno2 provides Interoperability as a Service for healthcare - a single Communication API to SEND, RECEIVE, and
  FIND patient information across the healthcare ecosystem. One connection reaches Direct Secure Messaging, clinical document
  exchange, HL7 FHIR resources, HL7 V2.x, cloud fax, and national record location and retrieval through Kno2's private network,
  Carequality, eHealth Exchange, and TEFCA (Kno2 is a federally designated QHIN). API access is partner/enterprise gated -
  integrators are provisioned a per-subscription tenant host with OAuth2 client-credentials keys and an IP allowlist; a staging
  sandbox is available through the Kno2 Developer Program.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/kno2.png
tags:
- Healthcare Interoperability
- Clinical Records
- Health Information Exchange
- Direct Secure Messaging
- FHIR
- Clinical Documents
- Patient Records
- Healthcare
- HIE
- Care Coordination
- QHIN
- TEFCA
- Carequality
created: '2026-07-12'
modified: '2026-07-12'
specificationVersion: '0.19'
apis:
- aid: kno2:kno2-fhir-api
  name: Kno2 FHIR API
  tags:
  - FHIR
  - USCDI
  - Clinical Records
  - Patient Facing
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://kno2.com/connectivity/
  baseURL: https://{subscription}.kno2fy.com
  properties:
  - url: https://kno2.com/wp-content/uploads/2022/09/Kno2-Connectivity-FHIR-2.1.pdf
    type: Documentation
  description: HL7 FHIR (DSTU3/R4) resource query and retrieval at scale, including USCDI data classes and patient demographic
    search, brokered through Kno2's gateway to Carequality and national FHIR endpoints. MODELED - Kno2 documents FHIR as a
    product capability of the Communication API but the FHIR base URL and resource paths are partner-provisioned and not publicly
    documented.
- aid: kno2:kno2-record-query-api
  name: Kno2 Patient Record Query API
  tags:
  - Health Information Exchange
  - QHIN
  - TEFCA
  - Carequality
  - Care Coordination
  image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/apis-json-logo.jpg
  humanURL: https://kno2.com/networks/
  baseURL: https://{subscription}.kno2fy.com
  properties:
  - url: https://kno2.com/api/
    type: Documentation
  description: On-demand patient record location and retrieval across national networks - Kno2's private network, Carequality,
    eHealth Exchange, and TEFCA (Kno2 is a designated QHIN). Find a patient, query participating organizations, and retrieve
    complete records on demand. MODELED - a documented product capability of the Communication API; the specific query/retrieve
    endpoint paths are partner-provisioned and not publicly documented.
- aid: kno2:kno2-attachments-api
  name: Kno2 Attachments API
  description: Upload, retrieve, and mark clinical document attachments.
  humanURL: https://developer.kno2.com
  baseURL: https://{subscription}.kno2fy.com
  tags:
  - Attachments
  properties:
  - type: OpenAPI
    url: openapi/kno2-attachments-api-openapi.yml
  - type: Documentation
    url: https://kno2.com/api/
  - type: APIReference
    url: https://developer.kno2.com
  - type: SourceCode
    url: https://github.com/Kno2/Kno2.ApiTestClient
  - type: PostmanCollection
    url: collections/kno2.postman_collection.json
  - type: OpenCollection
    url: collections/kno2.opencollection.json
- aid: kno2:kno2-authentication-api
  name: Kno2 Authentication API
  description: OAuth2 client-credentials token issuance.
  humanURL: https://developer.kno2.com
  baseURL: https://{subscription}.kno2fy.com
  tags:
  - Authentication
  properties:
  - type: OpenAPI
    url: openapi/kno2-authentication-api-openapi.yml
  - type: Documentation
    url: https://kno2.com/api/
  - type: APIReference
    url: https://developer.kno2.com
  - type: SourceCode
    url: https://github.com/Kno2/Kno2.ApiTestClient
  - type: PostmanCollection
    url: collections/kno2.postman_collection.json
  - type: OpenCollection
    url: collections/kno2.opencollection.json
- aid: kno2:kno2-directory-api
  name: Kno2 Directory API
  description: Validate Direct addresses and list document types.
  humanURL: https://developer.kno2.com
  baseURL: https://{subscription}.kno2fy.com
  tags:
  - Directory
  properties:
  - type: OpenAPI
    url: openapi/kno2-directory-api-openapi.yml
  - type: Documentation
    url: https://kno2.com/api/
  - type: APIReference
    url: https://developer.kno2.com
  - type: SourceCode
    url: https://github.com/Kno2/Kno2.ApiTestClient
  - type: PostmanCollection
    url: collections/kno2.postman_collection.json
  - type: OpenCollection
    url: collections/kno2.opencollection.json
- aid: kno2:kno2-intake-api
  name: Kno2 Intake API
  description: RECEIVE surface - search, retrieve, and process inbound messages.
  humanURL: https://developer.kno2.com
  baseURL: https://{subscription}.kno2fy.com
  tags:
  - Intake
  properties:
  - type: OpenAPI
    url: openapi/kno2-intake-api-openapi.yml
  - type: Documentation
    url: https://kno2.com/api/
  - type: APIReference
    url: https://developer.kno2.com
  - type: SourceCode
    url: https://github.com/Kno2/Kno2.ApiTestClient
  - type: PostmanCollection
    url: collections/kno2.postman_collection.json
  - type: OpenCollection
    url: collections/kno2.opencollection.json
- aid: kno2:kno2-messaging-api
  name: Kno2 Messaging API
  description: SEND surface - draft, populate, attach, and send messages.
  humanURL: https://developer.kno2.com
  baseURL: https://{subscription}.kno2fy.com
  tags:
  - Messaging
  properties:
  - type: OpenAPI
    url: openapi/kno2-messaging-api-openapi.yml
  - type: Documentation
    url: https://kno2.com/api/
  - type: APIReference
    url: https://developer.kno2.com
  - type: SourceCode
    url: https://github.com/Kno2/Kno2.ApiTestClient
  - type: PostmanCollection
    url: collections/kno2.postman_collection.json
  - type: OpenCollection
    url: collections/kno2.opencollection.json
common:
- type: AgenticAccess
  url: agentic-access/kno2-agentic-access.yml
- type: DomainSecurity
  url: security/kno2-domain-security.yml
- type: Authentication
  url: authentication/kno2-authentication.yml
- type: GitHubOrganization
  url: https://github.com/Kno2
- type: LinkedIn
  url: https://www.linkedin.com/company/kno2
- type: Website
  url: https://kno2.com
- type: Documentation
  url: https://developer.kno2.com
- type: Plans
  url: plans/kno2-plans-pricing.yml
- type: RateLimits
  url: rate-limits/kno2-rate-limits.yml
- type: FinOps
  url: finops/kno2-finops.yml
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com