Atlas / MCP servers / hasdata / zillow-mcp

zillow-mcpSAFE

mcp/hasdata/zillow-mcp

Zillow MCP server by HasData: for-sale, for-rent and sold listings and full property details, as JSON.

Verdict
SAFE
Grade
B
Trust score
89 /100
Exposed tools
—
Transport
stdio · streamable-http
License
MIT
Stars
11
01

Overview

From the repository's own README, as read at the audited commit. Badges and raw HTML are left out.

A hosted Model Context Protocol (MCP) server that gives Claude, Cursor, Windsurf and any other MCP client two read-only Zillow tools. Search for-sale, for-rent and sold listings with rich filters, and read a single property in full, all as structured JSON, with nothing to host.

It reads public listing pages on Zillow.com that a signed-out visitor can see.

1,000 free credits every month, no card required, which is 100 Zillow calls at the base rate.

https://mcp.hasdata.com/mcp?apis=zillow

[](https://glama.ai/mcp/servers/HasData/zillow-mcp) [](https://github.com/HasData/zillow-mcp/actions/workflows/contract.yml) [](https://modelcontextprotocol.io) [](#tools)

  • Prompts and resources

[](https://www.npmjs.com/package/@hasdata/zillow-mcp) [](https://pypi.org/project/hasdata-zillow-mcp/) [](LICENSE)

Contents

  • What you need
  • Quick start
  • Example prompts
  • Tools
  • Errors and failure paths
  • Pricing, free tier and limits
  • Tool selection
  • How it compares
  • FAQ
  • HasData links
  • Development
  • Contributing
  • [Li
Read from source at commit 16aa5c47d62dOBSERVED · 2026-10-10
02

Connect

Built from this server's own package name, version and transport as found in its source — not copied from anyone's documentation, so it cannot drift against a page we do not control. Replace the environment placeholders with a token scoped to the least it needs.

claude-code (npm)
claude mcp add zillow-mcp --env HASDATA_API_KEY=${HASDATA_API_KEY} --env HASDATA_API_KEY=${HASDATA_API_KEY} -- npx -y @hasdata/[email protected]
claude-code (pypi)
claude mcp add hasdata-zillow-mcp --env HASDATA_API_KEY=${HASDATA_API_KEY} --env HASDATA_API_KEY=${HASDATA_API_KEY} -- uvx hasdata-zillow-mcp==1.0.8
03

Trust audit

SAFEgrade B · trust 89/100 Nothing in the source contradicts what it says it does. Grade A is reserved for packages that have also passed the behavioural sandbox.

LayerWhat it checksResult
L0Provenance & inventoryPASS
L1Static analysis of the codePASS
L2Instruction surface (what it tells the agent)PASS
L3Class-specific surfacePASS
L4Behavioural (sandbox)SKIPPED

What the source does

Filesystem
none-observed
Network
none-observed
Shell
none-observed
Dependencies
not all pinned
Secrets in source
none-found

Findings (2)

LOWSupply chain · supply.unpinned · CWE-829, CWE-1357
package.json
mcp-remote
Why it matters. 1 dependency range(s) float
Fix. pin exact versions or ship a lockfile
LOWInventory / provenance · mcp.no_tools_extracted · CWE-1104
server.json
Why it matters. the tool list is enumerated at runtime by tools/list, not declared in source
Fix. the page says so rather than showing an empty table

Gates applied: no_behavioural_pass.

Audited 2026-10-10 · audit v0.4.1 · source sha 16aa5c47d62dfull audit observations/trust-audit/mcp-server/hasdata__zillow-mcp.json · Report an issue / request a re-scan
04

Audit history

Every audit this server has had. A grade with a past is a grade somebody is still checking.

DateSourceVerdictGradeScoreChange
2026-10-1016aa5c47d62dSAFEB89first audit
05

Questions

What is the zillow-mcp MCP server?

Zillow MCP server by HasData: for-sale, for-rent and sold listings and full property details, as JSON.

Is zillow-mcp safe to connect to an agent?

The audit found nothing in the source that contradicts what it says it does, and graded it B (89/100). Grade A is held back for packages that have also passed a sandboxed behavioural run, which is why a clean server reads B.

What credentials does zillow-mcp need?

It reads HASDATA_API_KEY from the environment. Give it a token scoped to the least it needs — an agent that can be talked into calling a tool can be talked into calling it with your credentials.

How does zillow-mcp run?

It speaks stdio and streamable-http, so it runs as a local process your client starts. It is published on npm as @hasdata/zillow-mcp at 1.0.1.

How current is this page?

The grade is for one exact copy of the source (16aa5c47d62d), read on 2026-10-10. The repository is watched and re-audited when it changes.

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