zillow-zestimate

Single-purpose valuation skill. Fire only on an explicit valuation request. When the intent is ambiguous, confirm with the user first: calls consume credits.

If the user also wants photos, schools, agent contact or price history, use zillow-full instead.

Tool

get_zestimate (1 credit)

Pass either zpid (preferred: cheaper, cache-served) or address. With only address, the handler resolves the zpid first.

Returns:

{
  "data": {
    "zestimate": 489500,
    "rent_zestimate": 2800,
    "tax_assessed_value": 410000,
    "last_sold_price": 375000,
    "currency": "USD"
  }
}

Authentication

Set ZILLAPI_KEY to your Zillapi API key (format zk_...).

export ZILLAPI_KEY="zk_..."

Free key at https://zillapi.com/signup: 100 credits, no card required. Plans and current prices: https://zillapi.com/pricing/. Failed calls are not charged.

Errors

The handler returns dicts, never raises:

• {"error": "auth", ...}: ZILLAPI_KEY missing or invalid
• {"error": "HTTP 404", ...}: property not found
• {"error": "HTTP 429", ...}: rate limited, back off and retry
• {"error": "network", ...}: DNS or connection failure

Reference

• OpenAPI spec: https://zillapi.com/openapi.json
• REST docs: https://zillapi.com/api/properties/
• Hosted MCP server (alternative to this skill): https://api.zillapi.com/mcp

Trademark

Zillapi is an independent service and is not affiliated with, endorsed by, or sponsored by Zillow Group, Inc. "Zillow" and "Zestimate" are registered trademarks of Zillow Group, Inc.