Gaff Check vs HasData Redfin
A side-by-side look at the Gaff Check and HasData Redfin MCP servers: transport, auth, tools, quality signals, and the config to install either one in Claude, Cursor, Windsurf or VS Code.
Verdict: choose Gaff Check for real estate work as a local process; choose HasData Redfin for real estate as a local process. You can also run both side by side in one mcpServers block.
Which MCP server should you choose?
Choose Gaff Check when
- You need dedicated capabilities in the Real Estate domain.
- You prefer a local stdio subprocess transport.
Choose HasData Redfin when
- You need dedicated capabilities in the Real Estate domain.
- You prefer a local stdio subprocess transport.
- You have the keys it needs:
HASDATA_API_KEY. - You want tools like
hasdata_redfin_listing_getRealEstateListings, hasdata_redfin_property_getPropertyDetails.
Feature & specification comparison
Rows where the two servers differ are marked.
| Spec | ||
|---|---|---|
| Category | Real Estate | Real Estate |
| Quality signal | 43/100 · Fair | 57/100 · Good |
| Install command | Confirmed | Confirmed |
| Transport | Local subprocess (stdio) | Local subprocess (stdio) |
| Auth | Not declared | Not declared |
| Pricing | Not declared | Not declared |
| Required env vars | None listed | HASDATA_API_KEY |
| Verified owner | Community listing | Community listing |
| GitHub stars | 7 | 11 |
| Directory activity | 0 views 0 installs 0 upvotes | 0 views 0 installs 0 upvotes |
| Tools | Not listed | 2 |
| Full listing | View Gaff Check | View HasData Redfin |
Tools & capabilities
Gaff Check tools
No tool names declared yet. Check the project README from the listing page.
HasData Redfin tools 2
hasdata_redfin_listing_getRealEstateListingsEach 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 callhasdata_redfin_property_getPropertyDetailsAddress, 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
Ready-to-paste client configs
Paste either block (or both) into your client config, e.g. claude_desktop_config.json or ~/.cursor/mcp.json. We only show a config when the install command is confirmed.
Gaff Check
{
"mcpServers": {
"gaff-check": {
"command": "npx",
"args": [
"-y",
"gaff-check"
]
}
}
}
HasData Redfin
{
"mcpServers": {
"hasdata-redfin": {
"command": "npx",
"args": [
"-y",
"@hasdata/redfin-mcp"
],
"env": {
"HASDATA_API_KEY": "YOUR_HASDATA_API_KEY_HERE"
}
}
}
}
Frequently asked questions
Gaff Check is categorized under Real Estate and uses a local stdio subprocess. HasData Redfin belongs to Real Estate and uses a local stdio subprocess. Pick Gaff Check for real estate work and HasData Redfin for real estate.
Copy the mcpServers block from the config section on this page into your client's config (for example claude_desktop_config.json or ~/.cursor/mcp.json), then fully restart the client.
Gaff Check has no declared pricing — check the project's own site. HasData Redfin has no declared pricing — check the project's own site. If a server needs environment variables such as API keys, define them under the env key in your client's MCP config.
Yes. MCP clients support multiple servers: add gaff-check and hasdata-redfin as separate keys in the same mcpServers object, and your assistant will call tools from either one.
On AllMCPs, Gaff Check has a quality signal of 43/100 (Fair) with 0 views, 0 installs and 7 GitHub stars. HasData Redfin has 57/100 (Good) with 0 views, 0 installs and 11 GitHub stars.