New: discover the R&D tax incentives your business may be eligible for.Join the Waitlist
Developers and API

Build on GrantsMAX

A REST API and OpenAPI description let businesses and accounting firms build GrantsMAX into their own workflows. Read-only by design.

REST API

Discovery, eligibility signals, and pack preparation, available programmatically for firms and partners to build on.

OpenAPI and docs

An OpenAPI description is served at /api/openapi, with reference documentation at /api/docs.

Built for the channel

Accounting firms can integrate GrantsMAX behind their own brand. Ask us about white-label and partner access.

MCP-native

Prefer to connect data over the Model Context Protocol? GrantsMAX is MCP-native.

Webhooks and automation

Hook GrantsMAX into your existing systems so preparation fits your workflow.

Read-only and secure

API access is read-only for source data. GrantsMAX never writes back and never lodges.

Where the line sits

The API is for connecting data and preparing claims, never for lodging them. GrantsMAX prepares an evidence-backed pack; a registered accountant or tax agent reviews, refines, and lodges, and your business owns the claim.

Build with GrantsMAX

Join the waitlist for early access, or talk to us about API and white-label access for your firm.