# Definity Financial

**Canonical:** https://apis.io/providers/definity-financial/  
**Website:** https://www.definityfinancial.com/  
**APIs profiled:** 0

Definity Financial Corporation is a Canadian property and casualty insurance group headquartered in Waterloo, Ontario and listed on the Toronto Stock Exchange (DFY). It is the demutualized successor to Economical Mutual Insurance Company, founded in 1871 in Berlin (now Kitchener), Ontario; policyholders approved demutualization in May 2021 and the company completed its IPO in November 2021, renaming the operating carrier Definity Insurance Company. Definity underwrites personal and commercial property, automobile, farm, and pet lines across Canada through four brands: Economical (broker-distributed home, auto, farm and business insurance), Sonnet (described by the company as the largest fully digital direct-to-consumer insurance business in Canada), Family Insurance Solutions, and Petline/Petsecure (pet insurance). It is one of the Big Few Canadian P&C carriers and reported roughly $6.3B in gross written premiums on a trailing-twelve-month pro-forma basis including its Travelers Canada acquisition. Its API posture is partner-gated and honest to state plainly: Definity publishes no public, self-serve developer portal and no downloadable OpenAPI, Swagger, GraphQL, or AsyncAPI definition on any first-party host. Every developer-shaped subdomain of definityfinancial.com fails to resolve, an api.definity.com host exists behind Imperva but answers HTTP 404 with an empty body to every anonymous path including OAuth and OpenID discovery, and the only reachable broker surface, broker.economical.com, is a Docebo learning management system for broker training rather than an API reference. The gated API is nonetheless real and independently attested: CSIO, Canada's property-and-casualty data-standards body and the domestic counterpart to ACORD, certified Definity against its API Security Standards on 27 November 2024 — the industry's standard authentication and authorization API model for insurer-to-broker-management-system connectivity, requiring confirmed mitigation of 16 OAuth security concerns and 18 API endpoint concerns — and Definity is additionally CSIO eDocs Certified and Compliance Certified (all non-standard Z-Codes eliminated from broker data exchange). Its Vyne broker digital platform runs on Guidewire Cloud, which Definity was the first Canadian P&C insurer to adopt for its core insurance platform. Two brands, Sonnet and Economical, publish real hand-authored llms.txt documents with explicit AI-training, generation, summarization and crawling directives, including named directives for OpenAI, Google-DeepMind and Anthropic. All of this sits in a Canadian market where OSFI supervises prudentially, the provinces regulate conduct, and Consumer-Driven Banking excludes insurance entirely, so no open-insurance mandate forces a public API surface and standardization is industry-led through CSIO instead.

## Kin Score — 24.8 / 100 (emerging)

Scored 2026-08-17 under rubric 0.11.0. Trend: flat (+0.0 from 24.8).

| Facet | Score |
|---|---|
| Discoverability | 68.5 |
| Contract Quality | 0.0 |
| Governance | 12.5 |
| Operational Transparency | 0.0 |
| Developer Ergonomics | 21.7 |
| Commercial Clarity | 42.1 |

Regulatory layer — **Insurance**: 45.5 (matched via tags).

## Agent readiness — 9.0 (agent-aware)

| Dimension | Value |
|---|---|
| Spec Presence | no |
| Agentic Access | no |
| MCP Server | no |
| Auth Clarity | yes |
| Idempotency | no |
| Error Semantics | no |
| OpenAPI Examples | no |
| Rate Limit Signal | no |
| Event Surface Described | no |
| Agent Skills | no |
| Well Known Catalog | no |
| Consent Identity | no |
| Agent Card | no |
| Dry Run Mode | no |

## Security (2)

- **Definity Financial Authentication** — 0 schemes
- **Definity Financial Domain Security** — TLSv1.3 · HSTS · DMARC

## Tags

Insurance, Canada, Property and Casualty, Carrier, Underwriting, Claims, Broker, Pet Insurance, Direct to Consumer, Partner Gated, CSIO, Insurtech

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Profiled by [API Evangelist](https://apievangelist.com) and published on [APIs.io](https://apis.io/providers/definity-financial/). Scores are computed from the provider's own public artifacts under a published rubric.