Guidewire API
Guidewire publishes REST Cloud APIs for PolicyCenter, ClaimCenter, and BillingCenter, with public reference docs, Swagger definitions, and a same-day API sandbox. Production access is partner-gated: it requires a PartnerConnect agreement and sales engagement, with no self-serve keys.
Frequently asked questions
Guidewire scores F on the API Report Card. Guidewire publishes REST Cloud APIs for PolicyCenter, ClaimCenter, and BillingCenter, with public reference docs, Swagger definitions, and a same-day API sandbox. Production access is partner-gated: it requires a PartnerConnect agreement and sales engagement, with no self-serve keys.
Without a usable official API, teams fall back on manual exports, file drops, or one-off vendor integrations. The other option is an unofficial API layer like Supergood that automates the authenticated web app directly.
Guidewire Software (NYSE: GWRE) is the dominant cloud-based core-systems platform for the global property & casualty (P&C) insurance industry.
Vertical: Financial Services (specifically Insurance, P&C core systems). Sub-vertical: Property & Casualty insurance core suite (policy administration, claims, billing, underwriting, rating, digital, data). Policy administration end-to-end in PolicyCenter: quote, bind, issue, endorse, renew, cancel across personal, commercial, and specialty lines.
Dominant. Guidewire and Duck Creek anchor the enterprise P&C SaaS core market; in the Gartner SaaS P&C Insurance Core Platforms, North America category Guidewire is one of the named leaders.
Policy records: policy number, named insured, effective/expiration dates, line of business, coverages, limits, deductibles, premium, endorsements, renewal status.
Founded in 2001; ~25 years old as of 2026. Guidewire went public on NYSE (GWRE) in 2012.
Grades measure one thing: can a customer's engineering team get their own data out programmatically? We check six things (whether a real API exists, how access is gated, data coverage, auth quality, docs and developer experience, and stability) and roll them into a letter grade. Grades get re-verified, and they only move on evidence.
Yes. Supergood maintains an unofficial Guidewire API and MCP server so AI agents and internal tools can read and write Guidewire data. See the Guidewire integration docs at supergood.ai/docs/guidewire-api.