permitstack-mcp

PermitStack MCP Server

MCP (Model Context Protocol) server for the PermitStack building permit API.

Lets Claude and other AI agents natively search 58M+ U.S. building permits across 552 jurisdictions.

What does this do?

Once installed, you can ask Claude things like:

• "Find solar permits in Austin from the last 30 days"
• "What work has been done at 123 Main St, Boston?"
• "Which contractors pulled the most HVAC permits in Phoenix last year?"
• "Show me new construction permits over $500K in Miami-Dade"

Claude will call the PermitStack API directly and give you structured results.

Installation

You'll need a free PermitStack API key. Get one in 2 minutes — the free tier gives you 100 requests per day.

Claude Desktop

Add to your claude_desktop_config.json:

macOS: ~/Library/Application Support/Claude/claude_desktop_config.json Windows: %APPDATA%\Claude\claude_desktop_config.json

{
  "mcpServers": {
    "permitstack": {
      "command": "npx",
      "args": ["-y", "permitstack-mcp"],
      "env": {
        "PERMITSTACK_API_KEY": "pk_your_key_here"
      }
    }
  }
}

Restart Claude Desktop. You should see the PermitStack tools available.

Programmatic use

npm install -g permitstack-mcp
PERMITSTACK_API_KEY=pk_... permitstack-mcp

Any MCP-compatible client can connect over stdio.

Available tools

Tool	Description
search_permits	Filter by city, category, date, value, contractor
get_permit	Fetch a single permit by number
get_property_history	All permits for an address
search_contractors	Find contractors by name/location
get_contractor_permits	All permits by a specific contractor
get_coverage	List supported jurisdictions

Data

• 58M+ permits across 552 U.S. jurisdictions (cities, counties, and statewide datasets), plus 51 historical archive sources
• Daily refresh from official city open-data portals
• AI-enriched descriptions for structured category/scope/systems

Full coverage list: https://permit-stack.com/coverage.html

Pricing

• Free: 100 requests/day
• Indie: $19/mo (1,000 req/day)
• Hobbyist: $29/mo (2,500 req/day)
• Developer: $49/mo (10,000 req/day — webhooks, bulk export)
• Startup: $149/mo (100,000 req/day)
• Growth: $499/mo (500,000 req/day — daily bulk exports)

See https://permit-stack.com/#pricing for details.

Links

• Homepage: https://permit-stack.com
• API Docs: https://api.permit-stack.com/docs
• Python SDK: https://pypi.org/project/permitstack/
• Support: support@permit-stack.com

License

Apache-2.0. See LICENSE for details.