Look up public records in your AI assistant

Connect to the research server

Use this URL when your assistant asks for a remote MCP server. Select Streamable HTTP and no authentication.

https://cookcountyrecords.com/mcp

For clients that import a plugin archive, download the GroundSignal plugin ZIP. You can also watch a lookup against the live research server.

Your assistant can check coverage, search a numbered street address or property index number (PIN), and read a parcel record. Every result links to the published dossier. Check its observation date before relying on it.

Try a lookup

Use GroundSignal to find PIN 09261170590000 in Park Ridge, Illinois. Give me the assessment year, the published record link and the dates of the sources you used.

For a different town, ask which towns GroundSignal covers. Where a check has expired, read the dated observation as historical. A missing value means the source has no value available for this lookup.

Add a custom connection

Custom connections depend on your account plan and workspace settings. A workspace administrator may need to enable them.

ChatGPT

In Plugins, add a custom MCP server. Name it GroundSignal, enter the endpoint below, choose no authentication and install it in your workspace.

Claude

In Customize → Connectors, choose Add custom connector. Enter GroundSignal and the endpoint below, then enable it in a conversation.

Grok Bot

In a new bot conversation, ask to connect GroundSignal at the endpoint below using Streamable HTTP and no authentication. Then ask the bot to run the example lookup.

Grok

In Connectors, select New connector → Custom. Enter the endpoint below and make a property lookup with the connector enabled.

Manus

In Connectors, choose Create → Add MCP by URL. Name the connector GroundSignal and enter the endpoint below.

Anthropic approved GroundSignal as a Community connector. If the Claude directory listing is unavailable in your account, use the custom connection above. Meta Muse and the Grok Bot marketplace have received their submissions. For Muse Code, use the terminal setup below or try our Muse website preview here.

Connect from the terminal

Run the commands for your client, then try the example PIN above.

# Claude Code
claude mcp add --transport http --scope local groundsignal https://cookcountyrecords.com/mcp
claude mcp get groundsignal

# Grok Build
grok mcp add --transport http --scope project groundsignal https://cookcountyrecords.com/mcp
grok mcp doctor groundsignal --json

# Codex
codex mcp add groundsignal --url https://cookcountyrecords.com/mcp

# OpenCode
opencode mcp add groundsignal --url https://cookcountyrecords.com/mcp
opencode mcp list

# Gemini CLI (sign in to Gemini first)
gemini mcp add --scope user --transport http groundsignal https://cookcountyrecords.com/mcp
gemini mcp list

{
  "groundsignal": {
    "transport": "streamable_http",
    "url": "https://cookcountyrecords.com/mcp",
    "enabled": true,
    "mode": "optional"
  }
}

muse exec --max-model-steps 4 \
  -c 'run.toolset=["mcp__groundsignal__search","mcp__groundsignal__fetch"]' \
  'Use GroundSignal to find Park Ridge PIN 09261170590000. Fetch its record and return the assessment tax year and source URL.'

For a paid brief or list, follow the Link CLI purchase instructions to check eligibility, review the complete price and retrieve your order.

GroundSignal accepts town slugs, numbered addresses and PINs for public property research. See our privacy policy for data handling and coverage for the underlying records.