# payer-api-directory Free MCP directory of US medical clearinghouse / payer APIs (Availity, Optum, Waystar, Stedi, pVerify, Office Ally, Claim.MD): what each does, dated pricing signals, access requirements, and a transparent recommender. This is an INDEPENDENT transparency directory. Pricing is dated and confidence-tagged: published = vendor's own public page; reported = third-party/forum estimate; none = no public price found. We never invent numbers. Last verified 2026-06-22. ## MCP endpoint (free, no key) https://clearinghouse.dropwatchhq.com/mcp (JSON-RPC 2.0, streamable-http) Tools: - list_clearinghouses: List all vendors with access model + whether pricing is public. - get_clearinghouse: Full dated, confidence-tagged record for one vendor. - vendors_by_function: Which vendors support a given X12 function. - recommend_clearinghouse: Transparently ranked shortlist for a practice. ## Vendors - Availity (availity) — sales-gated — https://clearinghouse.dropwatchhq.com/clearinghouse/availity - Optum (Change Healthcare) (optum-change-healthcare) — sales-gated — https://clearinghouse.dropwatchhq.com/clearinghouse/optum-change-healthcare - Waystar (waystar) — sales-gated — https://clearinghouse.dropwatchhq.com/clearinghouse/waystar - TriZetto Provider Solutions (trizetto) — sales-gated — https://clearinghouse.dropwatchhq.com/clearinghouse/trizetto - pVerify (pverify) — API-first — https://clearinghouse.dropwatchhq.com/clearinghouse/pverify - Office Ally (office-ally) — sales-gated — https://clearinghouse.dropwatchhq.com/clearinghouse/office-ally - Claim.MD (claim-md) — API-first — https://clearinghouse.dropwatchhq.com/clearinghouse/claim-md - Stedi (stedi) — API-first — https://clearinghouse.dropwatchhq.com/clearinghouse/stedi ## Paid https://clearinghouse.dropwatchhq.com/pricing — $49 one-time "which clearinghouse for my practice" report.