# American Financial Group (Great American Insurance Group)

> American Financial Group, Inc. (NYSE: AFG) is a Cincinnati-based insurance holding company writing
> specialty property and casualty insurance through Great American Insurance Group across more than 40
> specialty divisions. Its machine-readable API surface is Great American Carrier Services: 18 REST APIs
> that let appointed agents, brokers, program administrators and MGAs quote, submit, bind, issue, bill,
> document and report claims against Great American systems.

Generated by API Evangelist on 2026-09-02 from the provider's own published documentation.
Method: generated — the provider serves no /llms.txt (404 on every host probed).

## How access works

- Every endpoint on every API is secured with OAuth 2.0, client_credentials grant.
- Token: POST https://prod01.api.gaig.com/oauth/token with Authorization: Basic base64(clientId:clientSecret),
  Content-Type: application/x-www-form-urlencoded, body grant_type=client_credentials. Tokens live 3599s.
- Call: Authorization: Bearer {access_token}
- Environments: dev01 / uat01 / prod01 .api.gaig.com, each with its own /oauth/token endpoint.
- There is NO self-service signup, no published pricing and no public sandbox. Credentials are issued
  through a four-phase engagement (Discovery, Business Specification, Development, Delivery/UAT), and the
  production token endpoint additionally rejects unrecognised source IPs at the network layer.
- Entitlement is per consumer. Call GET /api/endpoints first: it returns only the endpoints you may call.
  An unentitled endpoint answers 501 Not Implemented.
- Request and response bodies are NOT in the OpenAPI documents. POST /api/docs with
  {"type":"request|response","endpoint":"/api/…","format":"json","scope":{…}} returns the shape for your
  consumer, division, product and state.

## APIs

- [Shop](https://api-documentation.gaig.com/shop/index.html): workflow API orchestrating appetite, eligibility, application, pricing, documents and submit for new business.
- [Submission](https://api-documentation.gaig.com/submission/index.html): create, renew, read, update, assign, set status, search and bind new business submissions.
- [Rating](https://api-documentation.gaig.com/rating/index.html): rate or quote a product from locations, coverages, limits and deductibles; taxes.
- [Risk Selection](https://api-documentation.gaig.com/risk-selection/index.html): question-and-answer engine returning an appetite/eligibility outcome.
- [Product](https://api-documentation.gaig.com/product/index.html): class codes, program codes, symbols, categories, availability, class of business.
- [Issuance](https://api-documentation.gaig.com/issuance/index.html): straight-through issue, enroll, re-enroll, cancel, policy mod; mints policy and customer numbers.
- [Policy](https://api-documentation.gaig.com/policy/index.html): read policy, quote, enrollment, certificate, cancel dates and transactions.
- [Forms](https://api-documentation.gaig.com/forms/index.html): search, attach and print policy forms; JSON or XML; ACORD form attachment intake datatype.
- [Document](https://api-documentation.gaig.com/document/index.html): ECM document storage, versions, annotations, comments and underwriting cases.
- [Billing](https://api-documentation.gaig.com/billing/index.html): payments, billing accounts, payment plans, bill charges, producer updates, One Inc acknowledgements.
- [Ingestion](https://api-documentation.gaig.com/ingestion/index.html): send Great American JSON, XML, PDF or binary; multipart ingest; configured inbound webhook receivers.
- [Risk Assessment](https://api-documentation.gaig.com/risk-assessment/index.html): address validation and geocode, BCEGS, protection class, cat modeling, wildfire/flood/hail/wind/coastal/sinkhole scores, crime score, motor carrier and driver reports, sanction compliance, property valuation, VIN lookup.
- [Claims](https://api-documentation.gaig.com/claims/index.html): first notice of loss create/update/submit, risk reports, payment reporting, service providers.
- [Notification](https://api-documentation.gaig.com/notification/index.html): claims notification opt in/out, reopen, close, messages, notes; chat start and transcript.
- [Producer](https://api-documentation.gaig.com/producer/index.html): producer, agency code, business unit, hierarchy, contacts, claims and billing info.
- [Contract](https://api-documentation.gaig.com/contract/index.html): submit, retrieve and search contract and tracking data.
- [Opportunity](https://api-documentation.gaig.com/opportunity/index.html): create, read, update, delete and search opportunity records.
- [Letters](https://api-documentation.gaig.com/letters/index.html): printable quote letters, quote letter data and reports.

## Specifications

Each API publishes an OpenAPI 3.0.3 document (3.0.1 for Document) at
https://api-documentation.gaig.com/{service}/openapi.json — harvested verbatim into openapi/_original/.

## Entry points

- Developer portal: https://www.greatamericaninsurancegroup.com/agents-brokers/great-american-carrier-services (also https://developer.gaig.com)
- API documentation index: https://www.greatamericaninsurancegroup.com/agents-brokers/great-american-carrier-services/carrier-services-api-docs
- API support: DL-GAI.ITServices.GASLab-APISupport@GAIG.COM
- Vulnerability disclosure: https://vdp.gaig.com — vulnerability@gaig.com
- Corporate: https://www.afginc.com — https://www.greatamericaninsurancegroup.com
- Legal disclosures / terms: https://www.greatamericaninsurancegroup.com/contact/legal-disclosures
- Privacy notice: https://www.greatamericaninsurancegroup.com/contact/privacy

## What is NOT published (verified absences, 2026-09-02)

- No client SDK in any language, no CLI, no Postman collection, no GitHub organization.
- No MCP server, no A2A agent card, no /llms.txt, no /.well-known/api-catalog.
- No status page, no changelog, no deprecation or versioning policy, no SLA.
- No published rate limits and no 429 in any status-code table.
- No idempotency key on any write endpoint.
- No pricing or plans — access is a B2B carrier integration relationship, not a priced API product.