CrimeMetric API / Assistants
Use CrimeMetric in Claude and ChatGPT
Connect once, sign in with your email, and ask your assistant about crime for any U.S. address, city or neighborhood. It answers with CrimeMetric's modeled rates: an index against the U.S. rate, a national percentile, an 80% range and a confidence level.
There's no key to copy. If your email has a paid plan, the connection uses it; if not, you get 10,000 free lookups a month.
Connector URL:
https://api.crimemetric.com/connect
Claude
- Click Add to Claude. It opens Claude's “Add custom connector” window with the name and URL filled in. Or go to Customize > Connectors, choose Add > Add custom connector, and paste the URL.
- Click Add, then Connect, and sign in with the 6-digit code we email you.
- Start a new chat with the setup prompt below.
Works on claude.ai and the desktop app. Free Claude plans can add one custom connector. On Team and Enterprise, an owner adds it under Organization settings > Connectors first.
ChatGPT
- Open chatgpt.com/plugins, click Add, and choose “Add custom MCP server”.
- Name it CrimeMetric, paste the connector URL, set authentication to OAuth if it asks, and create it. For the optional icon, use our 256-pixel PNG (ChatGPT takes PNGs up to 10 KB).
- Sign in with the 6-digit code we email you, then type @CrimeMetric in a chat, or paste the setup prompt.
Custom MCP servers depend on your ChatGPT plan and, in a workspace, on what your admin allows.
Setup prompt
Paste this into a new chat after connecting. Your assistant checks your plan, asks what you use crime data for and which places you care about, saves that so later answers fit, and runs a first lookup.
I just connected the CrimeMetric connector. Please: 1. Call CrimeMetric's account_status tool to see my plan and whether I've said what I use it for. 2. If nothing is saved, ask me in one short message what I'm using crime data for (home listings, rental or investment properties, choosing where to live, research or reporting, building an app, or something else) and which cities or addresses I care about. Save my answer with save_profile, leaving out names and contact details. 3. Run one example for a place I named. Lead with the national percentile, and give each index with its 80% range and confidence. 4. Suggest two or three things I could ask next.
What to ask
These come with the connector as ready-made prompts. In Claude they're in the + menu under CrimeMetric; in Claude Code they're slash commands. Or just ask in your own words:
- Get started: “Check my plan, ask what I use crime data for, and run a first lookup.”
- Compare places: “Compare crime in Austin, Round Rock and Pflugerville.”
- Score a property list: “Score these five rental addresses and flag any that didn't match.”
- Research a move: “I'm moving to Denver. How does property crime vary across the city, and how has it changed?”
- Facts for a listing: “Write neutral, sourced crime figures for my listing at 1 Main St.”
- Build with CrimeMetric: “Which endpoints fit a rental listings site in Python? Show me the code.”
The connector asks your assistant to describe places by their numbers, with ranges and confidence, not as safe or unsafe, and the listing prompt asks for neutral, sourced figures. Check what you publish.
Claude Code
Install the plugin: the connector plus skills for comparing places, scoring property lists and more.
claude plugin marketplace add vorplabs/crimemetric claude plugin install crimemetric@crimemetric
Or add only the connector, then run /mcp in a session to sign in:
claude mcp add --transport http crimemetric https://api.crimemetric.com/connect
Cursor, VS Code and other MCP clients
Add a remote (streamable HTTP) MCP server with the connector URL above; the client opens a browser window to sign in. Clients that can send a header but not sign in can use https://api.crimemetric.com/mcp with Authorization: Bearer <your key> instead. Tools and arguments.
Good to know
- Which account it uses: signing in with your email uses that email's paid key if it has one, including one you buy later. Otherwise it uses a free allowance kept for your connections, separate from any free key you got on this site. To use one particular key instead, choose “Use an API key instead” on the sign-in page and paste it; any active key works.
- Limits: lookups through an assistant count like API calls. Free covers 10,000 a month at one a second; batches and individual incident records need a paid plan.
- What the numbers are: modeled estimates from FBI crime data and local police records, plus police-published incident records where available. See the method.
- Not for decisions about individual people, such as tenant screening, lending, insurance or hiring. See the API terms.
- Disconnecting: remove CrimeMetric in your assistant's connector settings. An unused connection also lapses after 90 days. To have us end it on our side too, email support@vorplabs.com.