Changelog

v0.1.0 — Phase 1 (February 2026)

Initial release of the FoxCalc platform.

API

• Funder API: POST, PUT, PATCH, DELETE for offers
• HMAC-SHA256 authentication with replay protection
• Optimistic concurrency via version numbers
• Signed, expiring calculator URLs
• Submission callbacks with full computed terms
• Webhook subscriptions for 12 event types
• Rate limiting per API key

Calculator

• Real-time pricing calculator with slider controls
• Brand theming (logo, colors, terminology)
• Multi-frequency support (daily, weekly, monthly)
• Adjustable fees with floor/ceiling constraints
• Three prepayment models (step-per-month, fixed windows, funder-provided)
• Stipulation file uploads (10MB per file)
• Configurable submission confirmation dialog
• Three dynamic constraints (payment ceiling, net-to-merchant floor, fee ceiling)

Portal

• JWT session authentication
• Deal list with search, sort, and filters
• Deal detail with full submission snapshot
• Manual deal creation (9-section form)
• API Simulator (JSON preview, cURL export, adapter pipeline)
• 13 settings pages (branding, defaults, access control, guardrails)
• User management (invite, bulk CSV upload, roles, permissions)
• API key management (create, revoke, scopes)
• Webhook subscription management
• Password reset flow
• Dark mode

Infrastructure

• AWS deployment (ECS Fargate, RDS, ElastiCache, CloudFront, S3)
• SendGrid email with domain authentication (DKIM/SPF/DMARC)
• Docker containerization
• GitHub Actions CI/CD

Test Coverage

• 798 tests (115 shared + 422 API + 22 calculator + 239 portal E2E)