Realtystack MCP is listed as active in the registry but did not answer our last check. It exposes 6 tools. Last commit 1 Aug 2026.
U.S. real-estate data: property records, AVM value + rent estimates, sale/rental listings.
Uptime history
91 days of history · worst day 14%
91 days agonow
15.4%
Uptime 24h
14 of 91 checks
6
Tools
read from the server
489 ms
Response time
average over 24h
0
Stars
last commit 1 Aug 2026
Realtystack MCP does not always answer
Over the last week it answered 38.2% of our checks. We check every 15 minutes, so you hear about the next outage within the hour — not from your users.
Connect this server
Endpoint below is the one we actually reach during checks — not the one copied from a README. Last verified 3 min ago.
run in your terminal
claude mcp add realtystack-mcp --transport http https://realtystack-mcp.vercel.app/mcpSettings → Connectors → Add custom connector, then paste this address
https://realtystack-mcp.vercel.app/mcp~/.codex/config.toml
[mcp_servers.realtystack-mcp]
url = "https://realtystack-mcp.vercel.app/mcp".cursor/mcp.json
{
"mcpServers": {
"realtystack-mcp": {
"url": "https://realtystack-mcp.vercel.app/mcp"
}
}
}.vscode/mcp.json
{
"servers": {
"realtystack-mcp": {
"type": "http",
"url": "https://realtystack-mcp.vercel.app/mcp"
}
}
}Available tools 6
Read directly from the server with tools/list, grouped by what they act on.
If a tool disappears, we record the date.
avm
avm_rent
Run RentCast's automated model for long-term (12-month lease) rent and return a point rent estimate, a rentRangeLow/rentRangeHigh band, the resolved subjectProperty, and comparables[] — recent comparable rentals each scored with distance and correlation. Same subject-pinning rules as avm_value (address or latitude+longitude, plus optional subject attributes). Cached 6h upstream.
avm_value
Run RentCast's automated valuation model for a subject property and return a point price estimate, a priceRangeLow/priceRangeHigh band, the resolved subjectProperty, and comparables[] — recent comparable sales each scored with a distance (miles) and correlation (0-1 similarity). Pin the subject with either address or latitude+longitude; when subject attributes are unknown, supply propertyType/bedrooms/bathrooms/squareFootage (or leave lookupSubjectAttributes true to have RentCast fill them). Cached 6h upstream.
properties
search_properties
Search normalized U.S. property records (owner, structural attributes, tax assessments, tax + sale history) by location. Pin a location one of three ways: a full address, a city+state(+zipCode), or a latitude+longitude point with a radius (miles). All other parameters narrow the result set. Records are cached 24h upstream, so meta.cached may be true on repeat queries.
property
get_property
Full detail for a single property record, keyed by its RentCast id (the same id returned on every search_properties, avm_value, avm_rent, and listings record). Returns 404 if no property matches the id. Cached 24h upstream.
rental
search_rental_listings
Return a page of long-term (12-month lease) rental listings — same record shape as search_sale_listings (monthly price is the asking rent), but each record is tagged listingKind:"rental-long-term". Same location-pinning rules and 30-minute upstream cache as the sale-listings endpoint.
sale
search_sale_listings
Return a page of for-sale listings (list price, status, days on market, MLS name/number, listing agent + office contact, and price/status history) for a location. Same location-pinning rules as search_properties (address, city+state(+zipCode), or latitude+longitude+radius). Each record is tagged listingKind:"sale". Listings move faster than records, so these are cached only 30 minutes upstream.
Endpoints
| URL | Transport | State | Latency | Checked |
|---|---|---|---|---|
| https://realtystack-mcp.vercel.app/mcp | streamable-http | answering | 76 ms | 3 min ago |
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Realtystack MCP — questions
Answers built from our own checks of this server.
What can Realtystack MCP do?
It exposes 6 tools, read directly from the server on our last check. Among them: avm_rent, avm_value, get_property, search_properties, search_rental_listings, search_sale_listings. The full list with descriptions is on this page — we take it from the server itself via tools/list, not from a README.
How MCP servers expose tools in the first place →
Is Realtystack MCP working right now?
We send a real MCP handshake every 15 minutes. Over the last 24 hours 14 of 91 checks got a reply (15.4%), average response time 489 ms. The bar chart above shows every period we have measured.
The registry lists Realtystack MCP as active — why does it not respond?
The official MCP registry stores what the author submitted; it does not verify that the server still runs. We check the endpoint ourselves, and this one does not answer. Catalogues that copy the registry without checking will show it as working.
How do I connect Realtystack MCP?
Copy the ready config from this page. We generate it for Claude Code, Claude Desktop, Codex, Cursor and VS Code, each in the form that client actually reads. It is a remote server, so there is nothing to install — the client connects to the address.
Does Realtystack MCP need an API key?
No. Realtystack MCP completed a full MCP handshake with us as an anonymous client and listed its tools without asking for anything. All 6 of them are readable on this page. This is what we observed, not what the docs claim.
How fast is Realtystack MCP?
It answers our handshake in 489 ms on average, which is faster than 25% of all working MCP servers we measure. That is on the slow side — worth knowing if the tool sits inside an interactive loop. The comparison comes from our own checks across the whole registry, every 15 minutes.
Is Realtystack MCP open source?
We cannot say either way: written in JavaScript and 0 stars on GitHub, but we could not determine the licence, and without one the code is not open source by default.