redfin-mcp

Redfin real-estate access as an MCP server for Claude — search listings, fetch property details, market reports, and your saved homes/searches via natural language.

⚠️ Redfin does not publish a public consumer API. This server uses the same private /stingray/... endpoints the redfin.com web app uses, routed through your own signed-in browser tab via the ContextMint Bridge extension (driven by fetchproxy). Every request acts on behalf of your existing session — your cookies, your TLS, your JS context — exactly as if you'd clicked it in the browser yourself. Treat this as informal use of Redfin's website. Use at your own discretion.

Tools

Acknowledgement of Terms

By using this MCP server, you acknowledge and agree to the following:

1. This server accesses your own Redfin session. Every request is dispatched through your own browser tab via the ContextMint Bridge extension — your cookies, your TLS, your session. It does not — and cannot — access anyone else's account.

2. Redfin's Terms of Use govern your use of this server, just as they govern your direct use of redfin.com. The clauses most relevant here:

You may not automatedly crawl or query the Services for any purpose or by any means (including, without limitation, screen and database scraping, spiders, robots, crawlers and any other automated activity with the purpose of obtaining information from the Services) unless you have received prior express written permission from the applicable Redfin Company.

And: "You agree to keep your password confidential, not use others' accounts, nor permit others to use your account."

You are agreeing to those terms — read by the maintainer 2026-05-23 — every time you invoke a tool in this server. Redfin's terms prohibit automated crawling without written permission, and IDX listing data is licensed for personal, non-commercial use only.

3. Personal, non-commercial use only. This project is not affiliated with, endorsed by, sponsored by, or in partnership with Redfin Corporation. It is a personal automation tool that calls the same /stingray/... endpoints redfin.com calls when you click around. Do not use it to bulk-extract listings, redistribute IDX data, train AI models, populate a competing real-estate product, or for any commercial purpose.

4. Stability is not guaranteed. This server reads private internal endpoints (/stingray/api/gis, /stingray/api/home/details/*, /stingray/api/region/.../market-trends, /myredfin/*) that Redfin may change without notice. It may break. It may stop working. That's by design — the surface is not theirs to maintain on our behalf.

5. You accept full responsibility for any consequences of using this server in connection with your Redfin access — rate limiting, account suspension, IP blocks, AWS WAF challenges, or any enforcement action Redfin takes. If Redfin objects to your use, stop using this server.

This section is the maintainer's good-faith summary of the terms — it is not legal advice and does not modify or supersede Redfin's actual ToU.

Install

Option A — npx (after first publish)

Add to .mcp.json:

{
  "mcpServers": {
    "redfin": {
      "command": "npx",
      "args": ["-y", "redfin-mcp"]
    }
  }
}

Option B — from source

git clone https://github.com/chrischall/redfin-mcp
cd redfin-mcp
npm install
npm run build

{
  "mcpServers": {
    "redfin": {
      "command": "node",
      "args": ["/path/to/redfin-mcp/dist/bundle.js"]
    }
  }
}

One-time browser setup

redfin-mcp talks to your browser through the ContextMint Bridge extension, which is shared across every fetchproxy-based MCP (zillow-mcp, opentable-mcp, resy-mcp, …). Install it once from the ContextMint Bridge releases:

• Chrome: download the Chrome zip, unzip it, then chrome://extensions → toggle Developer mode → Load unpacked → pick the unzipped folder.
• Safari: not available yet — it will ship inside the ContextMint app, which has no public download. Use Chrome for now.

ContextMint Bridge is the fetchproxy browser extension under its new name, from the same maintainer — fetchproxy's own README (fetchproxy#extension) points to it. Its source is public at nullnet-app/contextmint-bridge: build it yourself, or check a release zip against the .sha256 file published beside it (shasum -a 256 -c contextmint-bridge-chrome-<version>.zip.sha256).

Open redfin.com and sign in. That's all the auth this server needs.

How it works

┌────────────────┐  stdio   ┌──────────────────┐   WS   ┌──────────────────┐    fetch()    ┌─────────────┐
│ MCP client     │◀────────▶│  dist/bundle.js  │◀──────▶│  ContextMint     │◀────────────▶│ redfin.com  │
│ (Claude, etc.) │          │  (Redfin MCP)    │ :37149 │  Bridge          │   (real TLS, │ (your tab)  │
└────────────────┘          └──────────────────┘        │  (separate)      │   cookies)    └─────────────┘

The MCP server runs in Node, but every HTTP call to redfin.com is dispatched into your live browser tab through the ContextMint Bridge extension. Each request rides your existing session — TLS fingerprint, cookies, and JS execution context all match the page that's already on screen. No headless browser stand-in, no separate identity, no third-party proxy: just your real browser, acting on its own behalf, with the MCP server picking what to ask for.

Redfin's /stingray/... JSON endpoints respond with a {}&& anti-CSRF prefix before the JSON body; the client strips it transparently.

Commands

npm test               # vitest, mocked transport, no network
npm run test:watch
npm run test:coverage
npm run build          # tsc --noEmit + esbuild bundle → dist/bundle.js
npm run dev            # node dist/bundle.js (after build)

License

MIT