The denial-data corpus, in your AI assistant
Coverage Rights runs a free public Model Context Protocol server. Connect it to Claude, ChatGPT, Cursor, or any MCP client and ask about insurer denial rates, appeal outcomes, and your appeal rights — every answer sourced to public disclosures.
https://coverage-rights.com/api/mcpStreamable HTTP transport, no authentication, read-only. In Claude: Settings → Connectors → Add custom connector → paste the URL. In Claude Code: claude mcp add --transport http coverage-rights https://coverage-rights.com/api/mcp
Tools
| Tool | What it returns |
|---|---|
| list_insurers | Tracked insurers and metric availability |
| get_insurer_metrics | Verified CY2025 denial metrics + contract-level rows, source-linked |
| rank_denial_rates | Insurer denial rates ranked from CMS-0057-F disclosures |
| get_treatment_outcomes | Overturn rates for a treatment/drug/procedure (42,749 review decisions) |
| get_condition_outcomes | Overturn rates by medical condition + most-fought treatments |
| search_outcomes | Find treatments and conditions by name |
| get_appeal_rights | Appeal grounds, deadlines, and escalation path for a denial situation |
| get_state_external_review | State external-review process, deadlines, regulator contacts |
Try asking
- “Which health insurer has the highest denial rate?”
- “How often do Zepbound denials get overturned on appeal?”
- “My Medicare Advantage plan denied an MRI as not medically necessary — what are my rights and deadlines?”
- “How does external review work in Texas?”
Data comes from insurers’ own CMS-0057-F disclosures and derived aggregates of California’s published external-review decisions — see methodology. Responses are informational, not legal or medical advice. Rate limits apply; for higher-volume or research use, email data@coverage-rights.com.