The Solution
PressW built RuleIQ™, a research platform that answers Medicare payment questions only from official CMS documents and cites every claim down to the page, section, and table row.
- A citable knowledge base. An ingestion pipeline parses CMS rule PDFs, pulls payment tables into structured data, and indexes the text for retrieval. RuleIQ™ now covers 10 years of OPPS and 10 years of IPPS rules, plus HCPCS Level II coding decisions from 2016 to 2026.
- Answers you can verify. Claude writes answers only from the retrieved source passages. Each answer links to the exact location in the source rule, and citations stay consistent across the follow-up questions in a conversation.
- A production SaaS platform. A branded web app on Coustier's own domain and cloud accounts, with user management, per-account feature access, usage and cost analytics, an audit trail, and branded PDF export of research conversations. The platform was load-tested before commercial rollout.
- Security and IP protection. Claude Haiku screens every incoming message for prompt-injection attempts. Rate limiting, single active sessions, conversation-length limits, geographic access monitoring, and web application firewall rules protect the platform and the firm's know-how.
- Research inside the tools people already use. An OAuth-secured Model Context Protocol (MCP) server makes RuleIQ™'s OPPS and IPPS search available inside other AI assistants.
Models Used:
- Claude Sonnet (default research model)
- Claude Opus (for harder questions)
- Claude Haiku (input screening)
Tech Stack:
- Next.js on Vercel
- Neon Postgres
- TurboPuffer vector search
- Inngest background jobs
- Langfuse tracing
- Upstash Redis
The Impact
- Research in seconds, not hours. Questions that took 3–12 hours of reading CMS rules now get a cited answer in 30–40 seconds, more than 99% faster.
- More clients, higher margins. With no change in services or marketing, Coustier Advisory served 20 clients in 2026 year to date, up from 15 in all of 2025, and its fixed-fee engagements are 6% more profitable this year.
- Part of the daily workflow. RuleIQ™ has been used on 19 of 39 client projects (49%), across 11 of 23 clients, since launch.
- Built for production. Version 1.0 shipped in October 2025. More than 60 releases followed across four consecutive engagements, and new CMS rules become searchable the day they are published.