You already use Claude to write emails and summarize things. The annoying part is everything around it: you search for prospects in one tab, copy rows into a spreadsheet, paste them into Claude for research, then paste the output somewhere else to send. Every copy and paste is a chance to lose data or give up.
MCP fixes the middle of that. It lets Claude call a real tool directly, so you can say "find 50 dentists in Austin with a website and tell me which ones have an owner name" and get actual data back, not a guess.
This guide covers one job: setting up Claude with an MCP-connected lead tool and running a lead generation session you can act on the same day.
What MCP actually changes
Without a tool connection, Claude can only work with what you paste in or what it remembers from training. Ask it for a list of local businesses and it may invent names, phone numbers and emails that look real. That is the biggest risk in AI lead generation, and it is why you should never send to a list Claude typed out from memory.
An MCP server gives Claude a set of actions it can call, such as "search businesses" or "save leads to a folder". The data comes from the tool, and Claude handles the instructions, filtering and writing. If you want the background, read what an MCP server is.
Step 1: Pick a lead source that exposes an MCP server
You need a tool that both has real lead data and offers an MCP server. Look for:
- Live search, not a stale database, so closed businesses and old numbers show up less.
- Fields you will use: business name, website, phone, emails found, owner name if available.
- A place to store results, so Claude's work does not vanish when the chat ends.
- A path to sending, so you are not exporting again later.
GetClient fits this: it has a Google Maps scraper, saved leads in folders, email verification and campaigns, and offers a REST API and MCP server for AI tools. New accounts get 100 free credits with no card, which is enough to test the flow. Credit costs are on the pricing page.
Step 2: Connect the server to Claude
The exact steps depend on whether you use Claude Desktop or another MCP-capable client, so follow your tool's MCP instructions. The general pattern:
- Create an API key in your lead tool's settings.
- Open your Claude client's MCP or connector settings and add the server with that key.
- Restart the client.
- Ask Claude: "What tools do you have available?" It should list the lead tool's actions. If it does not, the connection failed, so recheck the key and config.
Treat the API key like a password. Do not paste it into a normal chat message.
Step 3: Run a narrow first search
Start small so you can check quality before spending credits. A good first prompt names one niche, one city and a clear output:
Search Google Maps for "pest control" in Tampa, FL. Return up to 30 results. Keep only businesses with a website. Show me a table with name, website, phone, and whether an email was found.
Then tighten:
From those, which have an owner name with high confidence? Save them to a folder called "Tampa pest control - test".
Pick niches where a small business decides fast. Our pages on pest control, home care and tutoring centers cover angles for those markets.
Step 4: Make Claude check its own work
Claude is fast, but you are the one sending. Before anything goes out, ask for checks it can do from the returned data:
- "List any duplicates by website or phone."
- "Flag emails that look generic, like info@ or contact@, separately from personal ones."
- "Which rows have no email at all?"
Then run email verification in the tool before sending. Claude cannot know if a mailbox exists; a verifier can. For addresses that come back as catch-all, our guide on whether to send or skip catch-all emails helps you decide.
Spot check five leads by hand: open the website and confirm the business is real and matches the category. If one in five is wrong, fix your keyword before scaling.
Step 5: Use Claude for the part it is best at
Once you have verified leads, use Claude for writing and segmenting:
Group these leads by whether they mention emergency service on their site. Write a short first email for each group, under 90 words, using {{params.firstname}}, {{params.name}} and {{params.city}} as merge tags.
Keep merge tags in exactly that format, since that is what gets filled in when the campaign sends. Ask Claude not to invent specifics about a business it has not actually seen.
In GetClient you can then build the campaign from your saved folder: first email, a delay, and a follow-up that branches on If Opened or If NOT Opened. Send from your connected Gmail or SMTP account, set weekday send limits, and preview each step. Every email includes a one-click unsubscribe link and unsubscribed addresses are skipped automatically. If your prospects span regions, read about time zones in cold email before scheduling.
Prompts worth saving
| Goal | Prompt |
|---|---|
| Expand a market | "Run the same search for these 5 nearby cities and merge results, removing duplicates." |
| Find gaps | "Which leads have a phone and website but no email? List them for a call list." |
| Prioritize | "Rank by having an owner name, a personal email and a website." |
| Weekly refresh | "Search again and show only businesses not already in my folder." |
Mistakes to avoid
- Sending a list Claude wrote from memory. Always pull from a connected tool.
- Scaling before checking. Test 30 leads, then go wider.
- Skipping verification. Bad addresses hurt your sender reputation.
- Ignoring the rules. Cold email laws differ by country. Include a real way to opt out, be honest about who you are, and check the rules that apply to you. This is not legal advice.
Done well, the whole loop, from search to verified folder to drafted sequence, fits in a single focused session.