Element5

Element5 is a post-acute healthcare workflow automation platform that uses coordinated AI agents (Neos) to automate revenue cycle management (RCM) and back-office operations for home health, hospice, and palliative care providers. Its platform automates eligibility and benefit verification, prior authorization submission, claims processing, denials management, remittance and collections, and audit/compliance workflows, escalating only exceptions to human agents. Element5 exposes a public workflow API (Element5 API v2.2.0) protected by API keys that lets clients submit authorization and eligibility requests, process X12 270/271 eligibility transactions, upload and fetch file objects, and monitor long-running tasks via polling or webhook callbacks. The company is backed by Insight Partners and serves the post-acute care sector.

Element5 publishes 4 API contracts indexed on the APIs.io network, including Authorization API, Eligibility API, Object Store API, and 1 more. Tagged areas include Company, Healthcare, Revenue Cycle Management, Post-Acute Care, and Workflow Automation.

The Element5 catalog on APIs.io includes 1 event-driven AsyncAPI specification and 1 Spectral governance ruleset.

Element5’s developer surface includes engineering blog, authentication, sandbox, documentation, API reference, support, and 20 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

44.7/100 developing ▬ flat Agent 32/100 agent ready Front door AI 5/6 prominent saas Full breakdown ↓
scored 2026-11-06 · rubric v0.27.0 · Show this score on your site →

1 published contract 2 Agent Skills

Company Healthcare Revenue Cycle Management Post-Acute Care Workflow AutomationEligibility VerificationPrior Authorization Claims Processing Webhook Artificial Intelligence

What this lets a business do 1

Business capabilities this provider's published APIs can perform, derived from its own contracts. Browse all capabilities →

Patient Access Management

BC-2800

AuthorizationEligibility

POST /wf/v2/workflows/submit-eligibility POST /wf/v2/workflows/submit-authorization

Kin Score

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

Composite quality — 44.7/100 · developing

Contract Quality 12.3 / 19

Developer Ergonomics 8.1 / 15

Access Clarity 3.8 / 15

Operational Transparency 0.8 / 10

Contract Governance 2.9 / 9

Discoverability 5.5 / 8

Regulatory Posture 2.9 / 15

Create-or-Update Ergonomics 0.0 / 10

Agent readiness — 32/100 · agent ready

Machine-Readable Contract 18 / 18

Agentic Access Contract 10 / 10

Documented Reversibility 0 / 6

MCP Server 0 / 12

Machine-Readable Auth 10 / 10

Idempotency 0 / 9

Stable Error Semantics 8 / 8

Request/Response Examples 7 / 7

Rate-Limit Signaling 0 / 7

Typed Event Surface 6 / 6

Agent Skills 5 / 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 applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.

The six quality facets above are damped to 75 points between them, because the conditional facet above carries the other 25. That is why each facet's contribution is shown against a damped maximum: raising a quality facet moves the composite by 75% 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):

MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
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)
A2A Agent Card +8 pts — a2a/-a2a.yml manifest, graded on conformance.grade against A2A 1.0.0
Rate-Limit Signaling +7 pts — OpenAPI responses document X-RateLimit-* / RateLimit headers (verified), else a rate_limits artifact or RateLimits link (documented)
Registration Without a Human +6 pts — a `registration_endpoint` in the served RFC 8414 / OIDC discovery document
Delegated User Identity +6 pts — a served discovery document listing authorization_code in grant_types_supported (served), else an oauth2 authorizationCode flow or openIdConnect declared in an OpenAPI (documented)

6 more unmet checks in the Agent Readiness table above.

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

Access Clarity scores 25.0 — up to +15.0 composite points
Operational Transparency scores 7.9 — up to +12.0 composite points
Developer Ergonomics scores 54.2 — up to +9.2 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/element5/apis.yml: open an issue on github.com/api-evangelist/element5 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 →

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.

OpenAPI

measured — observed by APIs.io (published)

APIs 4

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

Element5 Authorization API

Authorization related APIs

Element5 Eligibility API

Eligibility related APIs

Element5 Object Store API

Object Store related APIs

Element5 Automation API

Generic E5 Task related APIs and Webhooks

Open Collections 3

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

Element5 Authorization API

OPEN COLLECTION

Element5 Authorization Eligibility API

OPEN COLLECTION

Element5 Authorization Object Store API

OPEN COLLECTION

Arazzo Workflows 2

Multi-step API workflows described with the Arazzo specification.

Element5 — Upload document and submit authorization

Upload a supporting file object, submit a prior-authorization request, then poll status.

ARAZZO

Element5 — Verify eligibility and await result

Submit an eligibility request and poll until the task succeeds or fails.

ARAZZO

Agent Skills 2

Packaged agent skills for driving this provider's APIs from an AI assistant.

Submit a prior authorization with Element5

AGENT SKILL

Verify patient eligibility with Element5

AGENT SKILL

Event Specifications 1

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

Element5 Webhooks

ASYNCAPI

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

Element5 API Rules

67 rules · 63 errors 3 warnings 1 info

SPECTRAL

OpenAPI Overlays 1

Overlays applied on top of this provider's contracts. Each card says who wrote it: a document the provider publishes, or one API Evangelist derived or generated.

Element5 Openapi Overlay

3 actions · update · element5-openapi-original.json

DERIVED

Security Posture 2

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

Element5 Authentication

apiKey · 1 scheme

SECURITY

Element5 Domain Security

TLSv1.3 · HSTS · DNSSEC · DMARC

SECURITY

Agentic Access 1

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

Element5 Agentic Access

8 operations · 4 acting

AGENTIC

Resources

Get Started 3

Portal, sign-up, and the first successful call

Sandbox

Sandbox

DeveloperPortal

DeveloperPortal

Login

Documentation 2

Reference material describing how the API behaves

Documentation

Documentation

APIReference

APIReference

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess

AgenticAccess

AgentSkill

AgentSkill

X-MCPServerCandidate

X-MCPServerCandidate

LLMsTxt

LLMsTxt

Design & Contract 8

Pagination, idempotency, versioning, errors, and events

Conventions

ErrorCatalog

Lifecycle

Conformance

Webhooks

DataModel

Arazzo

Arazzo

Scroll for all 8

Access & Security 3

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Authentication

Authentication

Compliance

Compliance

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 1

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Blog

Blog

Website

Website

Other 2

Properties that don't map to a standard resource type

CapabilityMap

CapabilityMap

Overlay

Overlay

Source (apis.yml)

aid: element5
name: Element5
description: Element5 is a post-acute healthcare workflow automation platform that uses coordinated AI agents (Neos) to automate
  revenue cycle management (RCM) and back-office operations for home health, hospice, and palliative care providers. Its platform
  automates eligibility and benefit verification, prior authorization submission, claims processing, denials management, remittance
  and collections, and audit/compliance workflows, escalating only exceptions to human agents. Element5 exposes a public workflow
  API (Element5 API v2.2.0) protected by API keys that lets clients submit authorization and eligibility requests, process
  X12 270/271 eligibility transactions, upload and fetch file objects, and monitor long-running tasks via polling or webhook
  callbacks. The company is backed by Insight Partners and serves the post-acute care sector.
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source:
  - authentication
  - security
  - sandbox
  generated: '2026-11-06'
  method: derived
image: https://cdn.prod.website-files.com/658c60c4ff902effa2174f77/668c43e2bfb9956a2995b419_e5-logo-gradient.png
url: https://raw.githubusercontent.com/api-evangelist/element5/refs/heads/main/apis.yml
x-type: company
x-source: vc-portfolio
x-backed-by:
- insight-partners
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-10-06'
x-docs-platform: redoc
x-docs-platform-confidence: medium
x-docs-platform-checked: 2026-10-03
x-docs-hosting: aws-cloudfront
tags:
- Company
- Healthcare
- Revenue Cycle Management
- Post-Acute Care
- Workflow Automation
- Eligibility Verification
- Prior Authorization
- Claims Processing
- Webhook
- Artificial Intelligence
tags_raw:
- Company
- Healthcare
- Revenue Cycle Management
- Post-Acute Care
- Workflow Automation
- Eligibility Verification
- Prior Authorization
- Claims Processing
- Webhooks
- Artificial Intelligence
- Workflow-Automation
apis:
- aid: element5:element5-authorization-api
  name: Element5 Authorization API
  description: Authorization related APIs
  humanURL: https://api-doc.e5.ai/
  baseURL: https://api.e5.ai
  tags:
  - Authorization
  properties:
  - type: OpenAPI
    url: openapi/element5-authorization-api-openapi.yml
  - type: Documentation
    url: https://api-doc.e5.ai/
  - type: APIReference
    url: https://api-doc.e5.ai/
- aid: element5:element5-eligibility-api
  name: Element5 Eligibility API
  description: Eligibility related APIs
  humanURL: https://api-doc.e5.ai/
  baseURL: https://api.e5.ai
  tags:
  - Eligibility
  properties:
  - type: OpenAPI
    url: openapi/element5-eligibility-api-openapi.yml
  - type: Documentation
    url: https://api-doc.e5.ai/
  - type: APIReference
    url: https://api-doc.e5.ai/
- aid: element5:element5-object-store-api
  name: Element5 Object Store API
  description: Object Store related APIs
  humanURL: https://api-doc.e5.ai/
  baseURL: https://api.e5.ai
  tags:
  - Object Store
  properties:
  - type: OpenAPI
    url: openapi/element5-object-store-api-openapi.yml
  - type: Documentation
    url: https://api-doc.e5.ai/
  - type: APIReference
    url: https://api-doc.e5.ai/
- aid: element5:element5-automation-api
  name: Element5 Automation API
  description: Generic E5 Task related APIs and Webhooks
  humanURL: https://api-doc.e5.ai/
  baseURL: https://api.e5.ai
  tags:
  - Automation
  properties:
  - type: OpenAPI
    url: openapi/element5-automation-api-openapi.yml
common:
- url: https://www.e5.ai/news
  type: Blog
- type: CapabilityMap
  url: capabilities/element5-capability-edges.yml
  name: Element5 Business Capability Map
- type: AgenticAccess
  url: agentic-access/element5-agentic-access.yml
- type: DomainSecurity
  url: security/element5-domain-security.yml
- type: Authentication
  url: authentication/element5-authentication.yml
- type: Conventions
  url: conventions/element5-conventions.yml
- type: ErrorCatalog
  url: errors/element5-problem-types.yml
- type: Lifecycle
  url: lifecycle/element5-lifecycle.yml
- type: Conformance
  url: conformance/element5-conformance.yml
- type: Webhooks
  url: asyncapi/element5-webhooks.yml
- type: AgentSkill
  url: skills/_index.yml
- type: X-MCPServerCandidate
  url: mcp/element5-mcp.yml
  note: 'Renamed from MCPServer 2026-09-03 (roadmap#247): the manifest self-describes as status: candidate — a tool list derived
    from the published API contracts, not an existing server. The scorer already read the manifest and reported mcp_server
    correctly; the MCPServer type was crediting the artifact-type surfaces with a server that does not exist.'
- type: LLMsTxt
  url: llms/element5-llms.txt
- type: Overlay
  url: overlays/element5-openapi-overlay.yaml
- type: Sandbox
  url: sandbox/element5-sandbox.yml
- type: DataModel
  url: data-model/element5-data-model.yml
- type: Arazzo
  name: Verify eligibility and await result
  url: arazzo/element5-verify-eligibility.yml
- type: Arazzo
  name: Upload document and submit authorization
  url: arazzo/element5-submit-authorization.yml
- type: Website
  url: https://www.e5.ai/
- type: DeveloperPortal
  url: https://api-doc.e5.ai/
- type: Documentation
  url: https://api-doc.e5.ai/
- type: APIReference
  url: https://api-doc.e5.ai/
- type: Login
  url: https://app.e5.ai/
- type: PrivacyPolicy
  url: https://www.e5.ai/privacy-policy
- type: Support
  url: mailto:apisupport@e5.ai
- type: Compliance
  url: https://www.e5.ai/security
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

Element5 API — frequently asked questions

Does Element5 have an API?

Yes. APIs.io lists 4 APIs from Element5, including Element5 Authorization API, Element5 Eligibility API and Element5 Object Store API, and 1 more.

Is there an OpenAPI specification for the Element5 API?

Yes. APIs.io indexes 4 OpenAPI specifications for Element5, each linked for download from this page.

How do I authenticate with the Element5 API?

Element5 uses bearer-token authentication (apiKey · 1 scheme). The details are profiled on APIs.io as Element5 Authentication.

Is the Element5 API ready for AI agents?

Element5 has a Kin Score of 44.7 out of 100 (developing) and an Agent Readiness score of 32.2 (agent-ready), scored by API Evangelist on 2026-11-06.

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