# Great American Carrier Services Issuance API

**Canonical:** https://apis.io/apis/american-financial-group/great-american-carrier-services-issuance-api/  
**Provider:** American Financial Group — https://apis.io/providers/american-financial-group/  
**Base URL:** https://prod01.api.gaig.com/issuance  
**Documentation:** https://api-documentation.gaig.com/issuance/index.html

Great American Carrier Services Issuance API is one of 18 APIs that [American Financial Group](https://apis.io/providers/american-financial-group/) publishes on the [APIs.io](https://apis.io/) network, described by a machine-readable OpenAPI specification. Tagged areas include Insurance, Property Casualty, Specialty Insurance, Commercial Insurance, and Financial-Services. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, and an API reference.

Processes straight-through transactions such as new business policies and enrollments into master policies, and generates unique policy and customer numbers.

## Operations (16)

| Method | Path | Summary |
|---|---|---|
| GET | `/api/endpoints` | — |
| POST | `/api/docs` | — |
| GET | `/api/customerNumber` | — |
| POST | `/api/issue` | — |
| POST | `/api/emision` | — |
| POST | `/api/impresion` | — |
| POST | `/api/policyControlDate` | — |
| GET | `/api/policyNumber` | — |
| POST | `/api/enroll` | — |
| POST | `/api/re-enroll` | — |
| POST | `/api/cancel` | — |
| POST | `/api/policyMod` | — |
| POST | `/api/enrollmentChange` | — |
| POST | `/api/enrollmentCoverageChange` | — |
| GET | `/api/validate/*/quotes/*` | — |
| GET | `/api/synthetic` | — |

## Machine-readable artifacts (5)

- **OpenAPI** — https://raw.githubusercontent.com/api-evangelist/american-financial-group/refs/heads/main/openapi/american-financial-group-issuance-openapi.yml
- **Documentation** — https://api-documentation.gaig.com/issuance/index.html
- **APIReference** — https://api-documentation.gaig.com/issuance/index.html
- **DeveloperPortal** — https://www.greatamericaninsurancegroup.com/agents-brokers/great-american-carrier-services
- **Overlay** — https://raw.githubusercontent.com/api-evangelist/american-financial-group/refs/heads/main/overlays/american-financial-group-issuance-overlay.yaml

## Other American Financial Group APIs (12)

- [Great American Carrier Services Shop API](https://apis.io/apis/american-financial-group/great-american-carrier-services-shop-api/)
- [Great American Carrier Services Submission API](https://apis.io/apis/american-financial-group/great-american-carrier-services-submission-api/)
- [Great American Carrier Services Product API](https://apis.io/apis/american-financial-group/great-american-carrier-services-product-api/)
- [Great American Carrier Services Risk Selection API](https://apis.io/apis/american-financial-group/great-american-carrier-services-risk-selection-api/)
- [Great American Carrier Services Rating API](https://apis.io/apis/american-financial-group/great-american-carrier-services-rating-api/)
- [Great American Carrier Services Forms API](https://apis.io/apis/american-financial-group/great-american-carrier-services-forms-api/)
- [Great American Carrier Services Policy API](https://apis.io/apis/american-financial-group/great-american-carrier-services-policy-api/)
- [Great American Carrier Services Document API](https://apis.io/apis/american-financial-group/great-american-carrier-services-document-api/)
- [Great American Carrier Services Billing API](https://apis.io/apis/american-financial-group/great-american-carrier-services-billing-api/)
- [Great American Carrier Services Ingestion API](https://apis.io/apis/american-financial-group/great-american-carrier-services-ingestion-api/)
- [Great American Carrier Services Risk Assessment API](https://apis.io/apis/american-financial-group/great-american-carrier-services-risk-assessment-api/)
- [Great American Carrier Services Letters API](https://apis.io/apis/american-financial-group/great-american-carrier-services-letters-api/)

## Tags

Insurance, Property Casualty, Specialty Insurance, Commercial Insurance, Financial-Services, OpenAPI, OAuth 2.0

---

Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/apis/american-financial-group/great-american-carrier-services-issuance-api/). The API's provider profile, Kin Score and agent-readiness rating are at https://apis.io/providers/american-financial-group/.