Great American Insurance Group

Great American Insurance Group (GAIG) is a specialty property and casualty insurance carrier operating in the United States. It provides a range of insurance solutions for niche industries, including commercial property, casualty, and specialty lines. GAIG is a member of American Financial Group, Inc., a publicly traded holding company. The website offers information about its services, corporate structure, legal disclosures, privacy policy, and contact options for customers and agents.

Great American Insurance Group is profiled on the APIs.io network. Tagged areas include Insurance, Property, Casualty, Specialty, and Financial-Services.

Great American Insurance Group’s developer surface includes getting-started guide, documentation, support, and 12 more developer resources.

🌐 Visit website 📡 Profile data on GitHub

20.8/100 emerging Agent 3/100 human only Full breakdown ↓
scored 2026-10-31 · rubric v0.25.0 · Show this score on your site →

0 APIs

Insurance Property Casualty SpecialtyFinancial-ServicesCompany

Kin Score

Kin Score How this is scored →
scored 2026-10-31 · rubric v0.25.0

Composite quality — 20.8/100 · emerging

Contract Quality 0.0 / 21

Developer Ergonomics 4.5 / 17

Access Clarity 5.8 / 17

Operational Transparency 1.2 / 11

Contract Governance 0.0 / 10

Discoverability 4.3 / 9

Regulatory Posture 4.9 / 15

Agent readiness — 3/100 · 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 4 / 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

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/.

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Agent readiness — checks not met, largest first (exact, from this profile):

Machine-Readable Contract +18 pts — api_specs includes an OpenAPI document
MCP Server +12 pts — deployment.mode + probe verdict on the mcp/ manifest, not the pointer; an unprobed slug falls back to authorship
Agentic Access Contract +10 pts — agentic_access artifact present (x-agentic-access), graded by author
Machine-Readable Auth +10 pts — a served openid-configuration/oauth-authorization-server carrying `issuer` (served), else the securitySchemes class in the provider OpenAPIs — bound (mutualTLS, DPoP, Signature) > negotiable (oauth2 authorizationCode/clientCredentials, openIdConnect) > bearer (http bearer, apiKey)
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

12 more unmet checks in the Agent Readiness table above.

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

Contract Quality scores 0.0 — up to +25.0 composite points
Developer Ergonomics scores 26.2 — up to +14.8 composite points
Access Clarity scores 34.2 — up to +13.2 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/great-american-insurance-group/apis.yml: open an issue on github.com/api-evangelist/great-american-insurance-group 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 →

Security Posture 3

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

Great American Insurance Group Authentication

0 schemes

SECURITY

Great American Insurance Group Domain Security

TLSv1.2 · HSTS · DMARC

SECURITY

Great American Insurance Group Vulnerability Disclosure

security.txt · contact published

SECURITY

Scopes 1

OAuth scopes governing access to this provider's APIs.

Great American Insurance Group Scopes

OAuth 2.0 · no documented scopes

0 scopes

SCOPES

Resources

Get Started 2

Portal, sign-up, and the first successful call

Login

GettingStarted

GettingStarted

Documentation 1

Reference material describing how the API behaves

Documentation

Documentation

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

WellKnown

WellKnown

Access & Security 4

Authentication, authorization, and security posture

Security

Security

SecurityTxt

SecurityTxt

VulnerabilityDisclosure

VulnerabilityDisclosure

DomainSecurity

DomainSecurity

Operate 1

Status, limits, changes, and where to get help

Support

Support

Commercial 2

Pricing, plans, and the legal terms of use

PrivacyPolicy

PrivacyPolicy

TermsOfService

TermsOfService

Company 2

The organization behind the API

Newsroom

Newsroom

Website

Website

Other 2

Properties that don't map to a standard resource type

Hosts

Hosts

Vendors

Vendors

Source (apis.yml)

aid: great-american-insurance-group
name: Great American Insurance Group
description: Great American Insurance Group (GAIG) is a specialty property and casualty insurance carrier operating in the
  United States. It provides a range of insurance solutions for niche industries, including commercial property, casualty,
  and specialty lines. GAIG is a member of American Financial Group, Inc., a publicly traded holding company. The website
  offers information about its services, corporate structure, legal disclosures, privacy policy, and contact options for customers
  and agents.
url: https://artifacts.apis.io/great-american-insurance-group/apis.yml
x-type: company
x-source: harvest:new-submission
x-tier: profiled
x-tier-reason: enrichment pass 2026-10-28 (modular-v1; was harvest)
specificationVersion: '0.20'
created: '2026-10-28'
modified: '2026-10-28'
tags:
- Insurance
- Property
- Casualty
- Specialty
- Financial-Services
- Company
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
image: https://www.greatamericaninsurancegroup.com/images/default-source/menu-icons/ga-tower.png
common:
- type: Security
  url: https://vdp.gaig.com
- type: SecurityTxt
  url: well-known/great-american-insurance-group-www-security.txt
- type: WellKnown
  url: well-known/great-american-insurance-group-well-known.yml
- type: Hosts
  url: hosts/great-american-insurance-group-hosts.yml
- type: Vendors
  url: vendors/great-american-insurance-group-vendors.yml
- type: Newsroom
  url: https://www.greatamericaninsurancegroup.com/about-us/business-operations/division/fidelity-crime/news
- type: Login
  url: https://www.greatamericaninsurancegroup.com/login
- type: GettingStarted
  url: https://www.greatamericaninsurancegroup.com/content-hub/loss-control/details/hiring-onboarding-and-engaging
- type: Documentation
  url: https://developer.gaig.com/
- type: VulnerabilityDisclosure
  url: security/great-american-insurance-group-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/great-american-insurance-group-domain-security.yml
- type: Website
  url: https://gaig.com/
- type: PrivacyPolicy
  url: https://www.greatamericaninsurancegroup.com/contact/privacy
- type: TermsOfService
  url: https://www.greatamericaninsurancegroup.com/contact/legal-disclosures
- type: Support
  url: https://www.greatamericaninsurancegroup.com/contact
apis: []
x-coverage:
  state: none
  reason: not-a-software-company
  detail: Great American Insurance Group does not provide a public API or developer program.
  evidence:
  - url: https://www.greatamericaninsurancegroup.com/
    status: 200
  checked: '2026-10-28'
x-submission-probe: 302 https://www.greatamericaninsurancegroup.com/, 2026-10-26
x-enrichment:
  date: '2026-10-28'
  status: enriched
  artifacts_added: 20
  pass: modular-v1
  engine: identity=oss,contract=oss,surfaces=oss,docs=oss,regulatory=oss

Great American Insurance Group API — frequently asked questions

How do I authenticate with the Great American Insurance Group API?

Great American Insurance Group documents its authentication (0 schemes). The details are profiled on APIs.io as Great American Insurance Group Authentication.

Is the Great American Insurance Group API ready for AI agents?

Great American Insurance Group has a Kin Score of 20.8 out of 100 (emerging) and an Agent Readiness score of 2.9 (human-only), scored by API Evangelist on 2026-10-31.

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