io.github.IsaiahDupree/realtystack-mcp

REMOTE · REALTYSTACK-MCP.VERCEL.APP · SCANNED AUG 3

U.S. real-estate data: property records, AVM value + rent estimates, sale/rental listings.

Available components

71 71 Trust /100

Trust breakdown (6 categories)

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, and we only credit what we can confirm. How we score →

Endpoint Security80

The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one. See how to fix → View diagnostics → Partial
HTTPS is enforced; there's no plaintext access path. View diagnostics → Pass
The HSTS (Strict-Transport-Security) header is present. View diagnostics → Pass
DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail

Transport & Reachability100

Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass

Schema Quality & AI Usability63

AI-judged instruction clarity (excellent).Pass
Context-footprint check failed: tool/resource definitions use about 1986 tokens (~331/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params. See how to fix → Fail
Usage-examples check failed: none of the tools include examples. See how to fix → Fail

Stability & Change Management7

Stability observed for 2 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial

Tool Coverage100

100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
100% of tool parameters carry a description.Pass

Capabilities100

Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass

Install

Add this component to your MCP client. Where a client-specific snippet is available, pick your client below and copy it straight into your config; otherwise use the connection detail shown.

remote · realtystack-mcp.vercel.app

Claude Codex opencode OpenClaw Hermes Other

# add to Claude Code

claude mcp add --transport http isaiahdupree-realtystack-mcp https://realtystack-mcp.vercel.app/mcp

# ~/.codex/config.toml

[mcp_servers.isaiahdupree-realtystack-mcp]
url = "https://realtystack-mcp.vercel.app/mcp"

// opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "isaiahdupree-realtystack-mcp": {
      "type": "remote",
      "url": "https://realtystack-mcp.vercel.app/mcp",
      "enabled": true
    }
  }
}

# add to OpenClaw

openclaw mcp add isaiahdupree-realtystack-mcp --url https://realtystack-mcp.vercel.app/mcp --transport streamable-http

# ~/.hermes/config.yaml

mcp_servers:
  isaiahdupree-realtystack-mcp:
    url: "https://realtystack-mcp.vercel.app/mcp"

// mcp.json

{
  "mcpServers": {
    "isaiahdupree-realtystack-mcp": {
      "type": "http",
      "url": "https://realtystack-mcp.vercel.app/mcp"
    }
  }
}

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

Changelog

Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.

3 Aug 26 +1

No change was recorded against any check on this day. Stability & Change Management went from 3 to 7. That category is still filling its 30-day observation window: 1 days of observed history at the previous scan, 2 at this one. The score rises as the window fills, whether or not the server changes.
2 Aug 26 0
- Stability: unverified → 0.03 ▲ functional
1 Aug 26 70

First indexed and scored.

Show 2 earlier entries Hide earlier entries

Diagnostics

Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.

Captured 3 Aug 2026 · Probed https://realtystack-mcp.vercel.app/mcp

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject	Issuer	Valid from	Valid until	Key	Signature	Serial
CN=*.vercel.app	CN=WR1,O=Google Trust Services,C=US	28 Jun 2026	26 Sept 2026	RSA 2048	SHA256-RSA	b1c2b607df94f28513779ae26fecf92f
SANs: *.vercel.app
CN=WR1,O=Google Trust Services,C=US (CA)	CN=GTS Root R1,O=Google Trust Services LLC,C=US	13 Dec 2023	20 Feb 2029	RSA 2048	SHA256-RSA	7fd9e2c2d2048a0474b627a26d0868a7
CN=GTS Root R1,O=Google Trust Services LLC,C=US (CA)	CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE	19 Jun 2020	28 Jan 2028	RSA 4096	SHA256-RSA	77bd0d6cdb36f91aea210fc4f058d30d

DNSSEC insecure

Validation of realtystack-mcp.vercel.app. — Not signed

Zone	DS	Keys	Algorithms	Outcome
.	trust_anchor	20326, 38696	8, 8	Verified
app.	present	23684	8	Verified
vercel.app.	absent			Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation

Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result	No authorisation required
HTTP status	200

Header	Value
strict-transport-security	max-age=63072000; includeSubDomains; preload

Transports 2 probes

Transport	URL	Outcome	Status	Location
streamable-http	https://realtystack-mcp.vercel.app/mcp	Verified	200
http (plaintext)	http://realtystack-mcp.vercel.app/mcp	HTTPS enforced	308	https://realtystack-mcp.vercel.app/mcp

MCP tools — 6 exposed · ~1,986 tokens

The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability.

Tool Tokens

avm_rent AVM long-term-rent estimate with comparables ~301

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.

Input Output Examples

Name	Type	Req	Description
address	string	—	Subject property address. Required unless latitude+longitude are given. e.g. "5500 Grand Lake Dr, San Antonio, TX, 78244".
bathrooms	number	—	Subject bathroom count; supports fractions.
bedrooms	number	—	Subject bedroom count; 0 indicates a studio.
compCount	integer	—	Number of comparable rentals to use in the estimate. Default 15.
daysOld	integer	—	Max days since comparable rentals were last seen (min 1).
latitude	number	—	Subject latitude; alternative to address (requires longitude).
longitude	number	—	Subject longitude; alternative to address (requires latitude).
lookupSubjectAttributes	boolean	—	When true, RentCast looks up any missing subject attributes from its records. Default true.
maxRadius	number	—	Max distance between comparables and subject, in miles.
propertyType	string	—	Subject property type; improves comparable selection.
squareFootage	number	—	Subject living-area square footage.

No output schema declared.

No examples provided.

avm_value AVM sale-value estimate with comparables ~329

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.

Input Output Examples

Name	Type	Req	Description
address	string	—	Subject property address. Required unless latitude+longitude are given. e.g. "5500 Grand Lake Dr, San Antonio, TX, 78244".
bathrooms	number	—	Subject bathroom count; supports fractions.
bedrooms	number	—	Subject bedroom count; 0 indicates a studio.
compCount	integer	—	Number of comparables to use in the estimate. Default 15.
daysOld	integer	—	Max days since comparable listings were last seen (min 1).
latitude	number	—	Subject latitude; alternative to address (requires longitude).
longitude	number	—	Subject longitude; alternative to address (requires latitude).
lookupSubjectAttributes	boolean	—	When true, RentCast looks up any missing subject attributes from its records. Default true.
maxRadius	number	—	Max distance between comparables and subject, in miles.
propertyType	string	—	Subject property type; improves comparable selection.
squareFootage	number	—	Subject living-area square footage.

No output schema declared.

No examples provided.

get_property Get one property record by id ~114

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.

Input Output Examples

Name	Type	Req	Description
id	string	yes	RentCast property id (from a prior search_properties, avm_value/avm_rent, or listings response), e.g. "5500-Grand-Lake-Dr,-San-Antonio,-TX-78244".

No output schema declared.

No examples provided.

search_properties Search property records ~435

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.

Input Output Examples

Name	Type	Req	Description
address	string	—	Full address, format "Street, City, State, Zip". Alternative to city/state/zipCode or lat+long. e.g. "5500 Grand Lake Dr, San Antonio, TX, 78244".
bathrooms	string	—	Bathroom count; supports fractions, ranges, and multiple values.
bedrooms	string	—	Bedroom count; supports ranges and multiple values.
city	string	—	City name; combine with state (and optionally zipCode) for an area search.
includeTotalCount	boolean	—	When true, RentCast also returns the total matching count. Default false.
latitude	number	—	Latitude of the search center; requires longitude and radius.
limit	integer	—	Max records to return per page. Default 50.
longitude	number	—	Longitude of the search center; requires latitude and radius.
lotSize	string	—	Lot size in square feet; supports ranges and multiple values.
offset	integer	—	Number of records to skip, for pagination. Default 0.
propertyType	string	—	Filter by property type.
radius	number	—	Search radius in miles (max 100); used with latitude/longitude.
saleDateRange	string	—	Days since last sale (min 1) — restricts to properties last sold within that window.
squareFootage	string	—	Living-area square footage; supports ranges and multiple values.
state	string	—	2-character state abbreviation, e.g. TX.
yearBuilt	string	—	Year built; supports ranges and multiple values.
zipCode	string	—	5-digit ZIP code.

No output schema declared.

No examples provided.

search_rental_listings Search active (or inactive) long-term rental listings ~391

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.

Input Output Examples

Name	Type	Req	Description
address	string	—	Full address to match a specific listing.
bathrooms	string	—	Bathroom count; supports fractions, ranges, and multiple values.
bedrooms	string	—	Bedroom count; supports ranges and multiple values.
city	string	—	City name; combine with state for an area search.
daysOld	string	—	Max days since the listing was last seen (min 1).
includeTotalCount	boolean	—	When true, RentCast also returns the total matching count. Default false.
latitude	number	—	Latitude of the search center; requires longitude and radius.
limit	integer	—	Max listings to return per page. Default 50.
longitude	number	—	Longitude of the search center; requires latitude and radius.
lotSize	string	—	Lot size in square feet; supports ranges and multiple values.
offset	integer	—	Number of listings to skip, for pagination. Default 0.
price	string	—	Listed rent; supports ranges and multiple values.
propertyType	string	—	Filter by property type.
radius	number	—	Search radius in miles (max 100); used with latitude/longitude.
squareFootage	string	—	Living-area square footage; supports ranges and multiple values.
state	string	—	2-character state abbreviation.
status	string	—	Listing status to return; defaults to Active.
yearBuilt	string	—	Year built; supports ranges and multiple values.
zipCode	string	—	5-digit ZIP code.

No output schema declared.

No examples provided.

search_sale_listings Search active (or inactive) sale listings ~416

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.

Input Output Examples

Name	Type	Req	Description
address	string	—	Full address to match a specific listing.
bathrooms	string	—	Bathroom count; supports fractions, ranges, and multiple values.
bedrooms	string	—	Bedroom count; supports ranges and multiple values.
city	string	—	City name; combine with state for an area search.
daysOld	string	—	Max days since the listing was last seen (min 1).
includeTotalCount	boolean	—	When true, RentCast also returns the total matching count. Default false.
latitude	number	—	Latitude of the search center; requires longitude and radius.
limit	integer	—	Max listings to return per page. Default 50.
longitude	number	—	Longitude of the search center; requires latitude and radius.
lotSize	string	—	Lot size in square feet; supports ranges and multiple values.
offset	integer	—	Number of listings to skip, for pagination. Default 0.
price	string	—	Listed price; supports ranges and multiple values.
propertyType	string	—	Filter by property type.
radius	number	—	Search radius in miles (max 100); used with latitude/longitude.
squareFootage	string	—	Living-area square footage; supports ranges and multiple values.
state	string	—	2-character state abbreviation.
status	string	—	Listing status to return; defaults to Active.
yearBuilt	string	—	Year built; supports ranges and multiple values.
zipCode	string	—	5-digit ZIP code.

No output schema declared.

No examples provided.

On this page

Handy links

Scoring key

80+ high trust
60–79 medium
below 60 low

How we score

Score history · last 30 days

1 Aug 3 Aug