rentfeed

rentfeed is a small local bridge to the hosted HousingFeed MCP server, which publishes US rental listings as structured data. Two of its tools need no key at all: a sample search returns up to ten live listings for an area and budget, and a summary tool reports listing counts with median and percentile asking rents for one city or ZIP. The remaining three tools work over the feed you license from HousingFeed: its current status, a searchable view of its listings, and the changes in its latest weekly update.

The bridge stores no listings of its own. It serves the upstream server's tool list locally, exactly as captured from the live endpoint, and forwards each tool call upstream, returning the result untouched. There is no booking, application, messaging or payment tool in the surface; it is listing data only.

Tools

• search_rentals_sample — free sample search of live US rental listings for an area and budget, at most 10 per call. Optional: state, city, min_rent, max_rent, min_beds, max_beds, a map box (min_lat, max_lat, min_lng, max_lng), new_since_days and sort (best, newest, cheapest, rent_desc).
• rent_summary — rent statistics for one US city or ZIP: listing count and the median, 25th and 75th percentile asking rent, overall and by bedroom count. Required: state. Optional: city, zip, beds (0 = studio, 4 = four or more) and include_rooms.
• feed_status — status of your licensed feed: listing count, when it was published, when the next weekly update is due, and how many listings were added, changed and removed. Needs a HousingFeed key.
• search_my_feed — search the listings in your licensed feed by city, ZIP, rent, bedrooms or map box, up to 50 per call with paging via offset. Optional: state, city, zip, min_rent, max_rent, min_beds, max_beds, map box, limit, offset and full. Needs a key.
• feed_changes — listings added, changed or removed in the latest weekly update of your feed. Optional: change (added, changed, removed), since, limit (default 20) and offset. Needs a key.

Configuration

• HOUSINGFEED_MCP_URL (optional) — override the upstream endpoint. Defaults to https://housingfeed.com/mcp. (The override hook is this rebuild's own labelled reconstruction.)
• HOUSINGFEED_API_KEY (optional) — when set, every upstream request carries an Authorization: Bearer <key> header with your own HousingFeed key, which unlocks the three feed tools for your licensed market. When it is not set, no key header is sent and only the keyless tools can succeed. (The header name and Bearer form are pinned by the original's registry record; forwarding the key from this env var is a labelled reconstruction — the original surface was captured keyless.)

Forwarding mechanics

On the first tool call the client opens a streamable HTTP session with the upstream: a JSON-RPC initialize request (protocolVersion 2025-03-26, clientInfo name rentfeed), then a notifications/initialized notification, then the tools/call request carrying the caller's arguments unchanged. When the upstream answers initialize with an Mcp-Session-Id header, that value rides on every later request of the session, which is reused for the life of the process. Replies may arrive as plain JSON or as server-sent events; both are read.

Successful upstream results pass through verbatim, including any isError flag the upstream sets. Failures — a JSON-RPC error, a non-2xx status, an unreadable response, or a request that cannot be completed — come back as an isError result whose text starts with rentfeed error: (this rendering is this rebuild's own labelled reconstruction).

CLI

Each tool is also a subcommand taking one JSON argument string:

npx @reneturcios/rentfeed search_rentals_sample '{"state":"NY","city":"Brooklyn","max_rent":3000}'
npx @reneturcios/rentfeed rent_summary '{"state":"TX","city":"Austin"}'
npx @reneturcios/rentfeed feed_status '{}'
npx @reneturcios/rentfeed --version

Exit codes: 0 on success, 1 on an isError result, 2 on a usage error.

MCP server

npx -y @reneturcios/rentfeed mcp

MCP client config:

{
  "mcpServers": {
    "rentfeed": {
      "command": "npx",
      "args": ["-y", "@reneturcios/rentfeed", "mcp"]
    }
  }
}

Docker

docker run -i ghcr.io/cloudcorprecords/rentfeed
docker run --rm ghcr.io/cloudcorprecords/rentfeed --version

The container's default command is mcp, so the first form is a stdio MCP server; any other arguments reach the CLI normally.

Development

npm install
npm run build
npm test
npm run dev

The test suite runs entirely against a stubbed JSON-RPC upstream — no live network calls.

License

MIT — see LICENSE.