Chapter

Chapter is a technology-driven Medicare advisory service (parent company Memoir, Inc.; insurance services via Chapter Advisory, LLC) that helps older Americans navigate retirement healthcare. Licensed advisors and self-service tools compare and enroll consumers across all major Medicare carriers nationwide, representing 50 organizations offering more than 15,000 products, and serving 500,000+ enrollees with a 4.9/5 rating across 6,700+ reviews. Chapter is HIPAA compliant, BBB accredited, and also ships a consumer OTC benefits app. Founded 2020 in New York City; backed by Addition. This is a consumer healthtech company with no public developer/API surface at the time of enrichment.

Chapter is profiled on the APIs.io network. Tagged areas include Company, Health Tech, Medicare, Insurance, and Health Insurance.

Chapter’s developer surface includes engineering blog and 4 more developer resources.

🌐 Visit website 📡 Source on GitHub

8.8/100 minimal ▬ flat Agent 0/100 human only saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0

0 APIs

Company Health Tech Medicare Insurance Health Insurance Senior Care Retirement Consumer Health

Kin Score

Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0

Composite quality — 8.8/100 · minimal

Contract Quality 0.0 / 21

Developer Ergonomics 0.4 / 17

Access Clarity 3.6 / 17

Operational Transparency 0.0 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 3.2 / 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

Regulatory Posture applies to this provider. Its tags matched the Insurance 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/.

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 github.com/api-evangelist/chapter: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

Security Posture 1

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

Chapter Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Resources

Access & Security 1

Authentication, authorization, and security posture

DomainSecurity

DomainSecurity

Commercial 2

Pricing, plans, and the legal terms of use

TermsOfService

TermsOfService

PrivacyPolicy

PrivacyPolicy

Company 2

The organization behind the API

Website

Website

Blog

Blog

Source (apis.yml)

aid: chapter
name: Chapter
description: Chapter is a technology-driven Medicare advisory service (parent company Memoir, Inc.; insurance services via
  Chapter Advisory, LLC) that helps older Americans navigate retirement healthcare. Licensed advisors and self-service tools
  compare and enroll consumers across all major Medicare carriers nationwide, representing 50 organizations offering more
  than 15,000 products, and serving 500,000+ enrollees with a 4.9/5 rating across 6,700+ reviews. Chapter is HIPAA compliant,
  BBB accredited, and also ships a consumer OTC benefits app. Founded 2020 in New York City; backed by Addition. This is a
  consumer healthtech company with no public developer/API surface at the time of enrichment.
url: https://raw.githubusercontent.com/api-evangelist/chapter/refs/heads/main/apis.yml
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: false
  label: Hosted service · you call their endpoint
  confidence: medium
  source:
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: unknown
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Unknown
  confidence: low
  source: []
  generated: '2026-07-22'
  method: derived
image: https://askchapter.org/site-preview.png
x-type: company
x-source: vc-portfolio
x-backed-by:
- addition
x-tier: stub
x-tier-reason: portfolio-lead
specificationVersion: '0.23'
created: '2026-07-17'
modified: '2026-07-18'
tags:
- Company
- Health Tech
- Medicare
- Insurance
- Health Insurance
- Senior Care
- Retirement
- Consumer Health
tags_raw:
- Company
- Healthtech
- Medicare
- Insurance
- Health Insurance
- Senior Care
- Retirement
- Consumer Health
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: DomainSecurity
  url: security/chapter-domain-security.yml
- type: Website
  url: https://askchapter.org
- type: Blog
  name: Chapter Magazine
  url: https://askchapter.org/magazine
- type: TermsOfService
  url: https://askchapter.org/terms-of-service
- type: PrivacyPolicy
  url: https://askchapter.org/privacy-policy
x-enrichment:
  date: '2026-07-19'
  status: backfilled
  pass: local-v1
  note: backfilled from .gitignore signal + verified work evidence

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