# CompBasis Muse connector

From musedirectory.ai, the independent directory of Meta Muse connectors. Not affiliated with Meta.

## CompBasis

Comp-based value range, post-sale tax and risk report for a single US home

- Record: https://musedirectory.ai/connector/compbasis
- Category: Finance & Bills
- Developer: HousingComps (https://housingcomps.com/developers)
- Muse status: Extra setup. Not in Muse's Connectors list yet. Muse can still use it: its page gives you a request to paste into Muse.
- Health: Working, 279ms, checked 2026-11-14T21:46:15Z
- Endpoint: https://mcp.housingcomps.com/mcp
- Auth: No account needed; Pricing: unknown
- Screening: Screened, no issues found (2026-11-14T21:46:15Z)
- Source: Found in the official MCP Registry (com.housingcomps/compbasis) https://registry.modelcontextprotocol.io/v0/servers?search=com.housingcomps%2Fcompbasis

Connects to CompBasis for comparable-sales valuations of one US residential address in IL, MI, MO, NY and TX. Muse can pull a value range, working price, condition, confidence, tax scenarios, listing history and risk flags, and answer plain-language questions about the property.

Example request: "What is my house at 412 Oak Street in Ann Arbor worth, and what would the property tax be after a sale?"

How to connect: Not in Muse's Connectors list yet, but Muse can still use it. Paste this into Muse: "Use CompBasis to help me. It is a free service with an MCP server at https://mcp.housingcomps.com/mcp. It does not need an API key. Ask me before you share anything with it." Muse asks before it shares anything with the app's site. Meta does not review apps used this way, so only use ones you trust. We tested this in the Muse app on September 24, 2026: Muse used an app's link directly this way and returned a live answer.

Tools:
- analyze_property: Analyze one US residential address and return the structured report: valuation.range (the comp-supported low to high with its measured error), valuation.anchor.price (the working price), negotiating_position (only when there is a real ask), condition, confidence (High, Medium or 
- get_report: Fetch a finished report by its report_id (as returned in a report's meta.report_id). Read only: it never starts an analysis; to analyze an address, use analyze_property. Returns the same report object as analyze_property. Long lists of comparable sales are shortened to the ones t
- ask_about_property: Ask a plain-language question about one property (for example its flood zone, school district outcomes, nearby amenities, what its tax bill is likely to be, or what a number in a report means). Give the question and either the address or the report_id of a report you already have
- get_job: Check an analysis or question that analyze_property or ask_about_property handed back as 'processing'. Waits up to wait_seconds (default 25, at most 28) for it to finish, then returns the report (or the answer), or 'processing' again. A job id is valid for 24 hours. The result is
- list_coverage: List the states CompBasis covers (with whether each is live, and its caveats), the call limits for keyless and keyed use, and whether a new analysis can start now. Useful when an address is rejected as out of scope or a limit is reached.

Screening checks:
- MCP handshake: pass (Answered in 279ms)
- Domain against threat feeds (Cloudflare security DNS): pass (mcp.housingcomps.com, housingcomps.com not flagged)
- Published packages against the OSV malicious-package database: n/a (No npm or PyPI package published)
- Hidden instructions or invisible characters in tool text: pass (5 tools read, nothing found)
- Inputs asking for passwords, card numbers or seed phrases: pass (None found)
- Domain and redirects: pass (Domain registered 108 days ago)
- AI review of purpose and tool behavior: pass (No concerns)