Spec Driven Development
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
Description from the maker (original English)
Redfin for-sale, for-rent and sold listings plus full property pages, as structured JSON.
These three are never merged into one score: opinions, measurements and popularity are different things.
We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.
Pick the AI app you use, then copy the settings.
HASDATA_API_KEY, x-api-keyValues marked secret are keys to your account. Never share them or paste them into a chat.
You need
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Pick your app above. We remember it, so next time the button says “Install in …”.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json
{
"mcpServers": {
"redfin": {
"command": "npx",
"args": [
"-y",
"@hasdata/redfin-mcp"
],
"env": {
"HASDATA_API_KEY": "your-value"
}
}
}
}Run this in your terminal
claude mcp add --transport http redfin 'https://mcp.hasdata.com/mcp?apis=redfin' --header 'x-api-key: your-value'claude mcp add redfin --env HASDATA_API_KEY=your-value -- npx -y @hasdata/redfin-mcpFill in the empty values before running it.
Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"redfin": {
"url": "https://mcp.hasdata.com/mcp?apis=redfin",
"headers": {
"x-api-key": "your-value"
}
}
}
}Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json
{
"mcpServers": {
"redfin": {
"command": "npx",
"args": [
"-y",
"@hasdata/redfin-mcp"
],
"env": {
"HASDATA_API_KEY": "your-value"
}
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
Paste into .vscode/mcp.json in your project
{
"servers": {
"redfin": {
"type": "http",
"url": "https://mcp.hasdata.com/mcp?apis=redfin",
"headers": {
"x-api-key": "your-value"
}
}
}
}Paste into .vscode/mcp.json in your project
{
"servers": {
"redfin": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@hasdata/redfin-mcp"
],
"env": {
"HASDATA_API_KEY": "your-value"
}
}
}
}Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.
This address needs a key in a request header, which the add-connector menu cannot set. Use Claude Code, Cursor or VS Code instead.
Your choice stays on this device in a cookie; no account needed.
x-api-key secret required HTTP headerThese settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.
We have not read this server’s tool list yet; we check endpoints in rotation.
We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 6, 2026
The registry name was verified against the domain hasdata.com (the registry checks domain ownership)
We have not read this repo from GitHub yet
We have not read this repo from GitHub yet
Not checked yet; we check endpoints in rotation
Not checked yet; we check endpoints in rotation
Not checked yet; we read the tool list when we check the endpoint
Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.
It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.
You need to fill in: HASDATA_API_KEY, x-api-key
Either way works: install it on your computer or connect to the cloud version.
The GitHub repo last changed –, and the latest version (1.0.2) reached the registry 43 days ago.
Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. It connects by URL, so apps that accept remote MCP servers work too, such as ChatGPT in developer mode.
In the same category: Spec Driven Development, Remote Desktop Commander, Safe Fetch
Servers in the same category from other makers, sorted by stars.
Reading a card:★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi
MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.
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MCP server for fetching URLs, safe against SSRF, DNS rebinding, and redirect-to-internal attacks.
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A hosted Redfin MCP server that gives Claude, Cursor, Windsurf and any other MCP client two read-only Redfin tools. Search for-sale, for-rent and sold listings with the filter set Redfin shows a visitor, and read one property page in full, both as structured JSON, with no MLS licence and nothing to host.
It reads public Redfin pages that a signed-out visitor can see.
1,000 free credits every month, no card required, which is 100 Redfin calls at the 10-credit rate.
https://mcp.hasdata.com/mcp?apis=redfin
An MCP client and a HasData API key from the dashboard, free to create with no card, and the free tier covers about 100 calls a month at the 10-credit rate. This is a remote server, so the simplest path is a URL and an x-api-key header, with no container to run. A client that only speaks stdio reaches it through a thin launcher, published as @hasdata/redfin-mcp on npm and hasdata-redfin-mcp on PyPI, shown below.
The server URL is the same for every client. We run it hands-on in Claude Code and Claude Desktop. The other blocks follow each client's own documented format for a remote server.
| Field | Value |
|---|---|
| URL | https://mcp.hasdata.com/mcp?apis=redfin |
| Transport | HTTP, streamable |
| Auth header | x-api-key: HASDATA_API_KEY |
Clients with OAuth support can add the same URL as a connector and sign in without putting a key in a config file.
Claude Code
claude mcp add --transport http redfin "https://mcp.hasdata.com/mcp?apis=redfin" \
--header "x-api-key: HASDATA_API_KEY"
Claude Desktop
Settings, then Connectors, then Add custom connector, then paste https://mcp.hasdata.com/mcp?apis=redfin and sign in.
For the config-file route, Claude Desktop loads only local (stdio) servers, so it reaches a remote server through a stdio launcher. The @hasdata/redfin-mcp package is that launcher, and it reads the key from the environment. Add this to claude_desktop_config.json:
{
"mcpServers": { "redfin": { "command": "npx", "args": ["-y", "@hasdata/redfin-mcp"], "env": { "HASDATA_API_KEY": "YOUR_KEY" } } } }
For Python instead of Node, swap the launcher for the PyPI package, which uvx runs without a manual install:
{
"mcpServers": { "redfin": { "command": "uvx", "args": ["hasdata-redfin-mcp"], "env": { "HASDATA_API_KEY": "YOUR_KEY" } } } }
Cursor
~/.cursor/mcp.json for every project, or .cursor/mcp.json for one:
{
"mcpServers": { "redfin": { "url": "https://mcp.hasdata.com/mcp?apis=redfin", "headers": { "x-api-key": "HASDATA_API_KEY" } } } }
Windsurf
~/.codeium/windsurf/mcp_config.json. Windsurf calls the field serverUrl, not url:
{
"mcpServers": { "redfin": { "serverUrl": "https://mcp.hasdata.com/mcp?apis=redfin", "headers": { "x-api-key": "HASDATA_API_KEY" } } } }
VS Code
.vscode/mcp.json in the workspace:
{
"servers": { "redfin": { "type": "http", "url": "https://mcp.hasdata.com/mcp?apis=redfin", "headers": { "x-api-key": "HASDATA_API_KEY" } } } }
Each of these lands on one tool, or on two in sequence when the second needs the URL the first returns.
A prompt that names a market goes to the search tool. A prompt that hands you a Redfin URL goes straight to the property tool. Searching for a full street address is a third case, covered below, because it answers with one property rather than a list.
| Tool | What it returns |
|---|---|
hasdata_redfin_listing_getRealEstateListings | Each listing with address, Redfin URL, list price, beds/baths, square footage, lot size, year built, days on market, status, coordinates, photos, MLS number, and HOA; an…. 10 credits a call |
hasdata_redfin_property_getPropertyDetails | Address, list/sold price, price history, Redfin Estimate, beds/baths, square footage, lot size, year built, property type, HOA, days on market, school ratings, tax…. 10 credits a call |
Two tools, 10 credits per successful call.
hasdata_redfin_listing_getRealEstateListings
A page of listings for a location, or one property when the location is a single address.
Two parameters are required, and the rest of the schema mirrors Redfin's own filter panel.
| Parameter | Type | Required | Notes |
|---|---|---|---|
keyword | string | yes | A zipcode, city, neighborhood, school, school district, apartment building name, or a full street address |
type | string | yes | forSale, forRent or sold |
sort | string | recommended, newest, oldest, priceLowToHigh, priceHighToLow, bedrooms, bathrooms, lotSize, squareFeetPrice and more | |
page | number | Result page, starting at 1 |
The filters are named after the nested structure Redfin uses internally, flattened with underscores, so they have to be passed exactly as the schema spells them. price_min_ and price_max_ are the price band, beds_min_ and beds_max_ the bedroom count, monthlyPayment_interestRate_ a mortgage assumption. A doubled underscore marks an array.
The ones worth knowing:
| Parameter | Type | Notes |
|---|---|---|
price_min_ / price_max_ | number | Price band |
beds_min_ / beds_max_ | number | Bedroom count |
baths | string | Minimum baths, one through four, plus oneAndHalf and twoAndHalf |
homeTypes__ | array | house, townhouse, townhome, condo, land, multiFamily, mobile, coOp, apartment, other. Which values apply depends on type |
statusOptions__ | array | active, comingSoon, contingentPending |
listingType_category___ | array | byAgent, byOwnerFsbo, newConstruction, foreclosures |
timeOnRedfin | string | newListing through moreThan45Days |
soldWithinOption | string | Sold window, from lastOneWeek to lastFiveYear. See the warning below |
yearBuilt_min_ / yearBuilt_max_ | string | A year from a fixed ladder, 1940 through 2026 |
forSaleSquareFeet_min_ / _max_ | string | Floor area from a fixed ladder, 750 through 10000 |
lotSize_min_ / lotSize_max_ | string | 2000 sqft through 100 acres, as written |
cost_hoa_ | number | Maximum monthly HOA fee |
cost_priceReduced_ | string | inTheLastDay through moreThan120Days |
homeFeatures_options___ | array | waterfront, hasAView, fireplace, fixerUpper, guestHouse, elevator, greenHome, accessibleHome and more |
homeFeatures_poolType_ | string | privatePool, communityPool, privateOrCommunityPool, noPrivatePool |
homeFeatures_keywordSearch_ | string | Free text against the listing description |
schools_greatSchoolRating_ | number | Minimum GreatSchools rating, 1 to 10 |
transportScores_walkScore_ | number | Minimum walk score, 1 to 100 |
rentalAmenities__ | array | inUnitWasherDryer, parkingAllowed, utilitiesIncluded, furnished, pool and more |
pets__ | array | dogsAllowed, catsAllowed |
moveInDate | string | MM/DD/YYYY |
A market search returns searchInformation with totalResults, a properties array of 40, and pagination with currentPage, nextPage and an otherPages map. A for-sale or sold property carries id, mlsId, url, homeType, status, price, beds, baths, area, yearBuilt, daysOnSite, addressRaw, a parsed address, latitude, longitude, description, atAGlanceFacts and photos.
atAGlanceFacts has two shapes. On a search row it is a list of selling-point strings, and on the property response it is a list of factLabel and factValue pairs, so code that reads one shape breaks on the other.
{
"id": 31625298, "mlsId": "2190201772333567097", "url": "https://www.redfin.com/TX/Austin/1721-Deerfield-Dr-78741/home/31625298", "homeType": "House", "status": "FOR_SALE", "price": 675000, "beds": 3, "baths": 2, "area": 1667, "yearBuilt": 1963, "daysOnSite": 0, "addressRaw": "1721 Deerfield Dr, Austin, TX 78741", "address": { "street": "1721 Deerfield Dr", "city": "Austin", "state": "TX", "zipcode": "78741" }, "latitude": 30.231372, "longitude": -97.734893, "atAGlanceFacts": ["Hill country views", "2020 roof", "Stainless appliances"] }
A rental is a building rather than a home, so type: forRent returns a different shape. price, beds, baths and area each become a { min, max } object across the available units, and the entry adds propertyName, availableUnits, agentEmail and agentPhone while dropping mlsId, homeType, yearBuilt and daysOnSite.
{
"id": "31510362", "propertyName": "The Sonata", "status": "FOR_RENT", "availableUnits": 12, "price": { "min": 745, "max": 1300 }, "beds": { "min": 1, "max": 2 }, "baths": { "min": 1, "max": 2 }, "area": { "min": 474, "max": 976 }, "addressRaw": "1070 Mearns Meadow Blvd, Austin, TX 78758" }
hasdata_redfin_property_getPropertyDetails
One property page
Only the beginning is shown; read the rest in the repo