redfin

redfin is a skill for Claude Code from chrischall/redfin-mcp. It costs 115 tokens per session (2,048 once invoked), scanned A, original, MIT.

A Redfin search assistant connected through MCP, a standard way for AI assistants to use external tools. Redfin is a real-estate website for listings, property records, market reports, and saved searches.

In plain words
What is it for?
Use it to find homes, inspect property details, read market reports, and check saved homes or searches on Redfin.
Why use it?
It lets the assistant retrieve Redfin information in everyday language instead of requiring manual searches and copying. It uses your signed-in Redfin browser tab because Redfin does not provide a public consumer API.

Skill for Claude Code

Written for Claude Code: shipped in a Claude Code plugin. Also seen: reads .claude/ paths; positional $N argument.

Part of the redfin-mcp plugin — 2 skills, 2 MCP servers shipped together

Good fit Use it to find homes, inspect property details, read market reports, and check saved homes or searches on Redfin.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/chrischall/redfin-mcp/redfin
Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent
npx skills add chrischall/redfin-mcp --skill redfin
Clone the repo
git clone --depth 1 https://github.com/chrischall/redfin-mcp

Made for: Claude Code.

Or install redfin-mcp, the plugin that ships this one along with the rest of its 2 skills, 2 MCP servers.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for redfin

README.md
[![agentmods](https://agentmods.dev/badge/skills/chrischall/redfin-mcp/redfin/github.svg)](https://agentmods.dev/skills/chrischall/redfin-mcp/redfin)
Your own site
<a href="https://agentmods.dev/skills/chrischall/redfin-mcp/redfin"><img src="https://agentmods.dev/badge/skills/chrischall/redfin-mcp/redfin/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for redfin

Your own site · 80×15
<a href="https://agentmods.dev/skills/chrischall/redfin-mcp/redfin"><img src="https://agentmods.dev/badge/skills/chrischall/redfin-mcp/redfin.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,048 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00115 $0.02048
Opus 5 $0.00057 $0.01024
Sonnet 5 $0.00023 $0.00410
Haiku 4.5 $0.00012 $0.00205

Measured 5d ago against content hash 1093460e2f8e, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

redfin scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 5d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

skills/redfin/SKILL.md · 134 lines

How it starts

The opening of the file, as written. The whole thing — 134 lines — stays where its author put it; the contents beside it link to each section on GitHub.

redfin-mcp

MCP server for Redfin — natural-language access to listings, property records, market reports, and your saved homes/searches. Routes through your signed-in redfin.com tab via the fetchproxy browser extension, so AWS WAF / DataDome see a real browser session instead of a Node process.

⚠️ Redfin does not publish a public consumer API. This server uses the same private /stingray/... endpoints the redfin.com web app calls, dispatched through your own signed-in browser tab via the fetchproxy extension. Use at your own discretion.

Setup

1. Install redfin-mcp

.mcp.json (project) or ~/.claude/mcp.json (global):

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

2. Install the fetchproxy extension (one-time, shared across all fetchproxy-based MCPs)

git clone https://github.com/chrischall/fetchproxy
cd fetchproxy
npm ci
npm --workspace=@fetchproxy/extension-chrome run build

Then in Chrome: chrome://extensions → Developer mode → Load unpacked → pick packages/extension-chrome/dist/.

3. Open redfin.com and sign in.

That's it. No API keys, no env vars.

Tools

Public data

  • redfin_search_properties — Search by location + filters (price, beds/baths min, home type). Resolves the location via Redfin's autocomplete then queries the /stingray/api/gis endpoint. Returns matching listings with price, beds/baths, sqft, year built, address, and the Redfin home URL.
  • redfin_get_property(view?) — Full property record by url (Redfin homedetails URL or path), property_id alone (resolved internally by following Redfin's /home/<id> redirect to the canonical slug, then initialInfo), or property_id + listing_id (fastest — skips resolution). Two-round-trip API: initialInfo resolves the URL to IDs, then aboveTheFold fetches the data. Returns address, beds/baths, sqft, year built, price, status, days on market, primary photo.
  • redfin_get_market_report — Median sale/list prices, price per sqft, days on market, year-over-year change, homes sold/on market for a Redfin region. Provide either location (free-text) or region_id + region_type. All metrics returned as formatted strings (e.g. "$870K", "+2.4%").
  • redfin_calculate_mortgage — Local PITI calculator. No network call. Provide home price, interest rate, optional down payment / taxes / insurance / HOA / PMI; returns a full monthly breakdown.

Read the full file on GitHub · 134 lines

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 5d ago Changed · +57 lines 1093460e2f8e
  2. 10d ago First seen · 77 lines · 115 tokens per session scan A 0bc211274c9f

Subscribe to this mod's changes

redfin is a skill published in the GitHub repository chrischall/redfin-mcp (3 stars, last pushed today), licensed MIT. It adds 115 tokens to every session and 2,048 once invoked, about $0.0006 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.

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