The Derrick MCP gives Claude, Cursor, Windsurf, and any MCP-compliant agent 12 tools to find emails, phones, LinkedIn profiles, company data, tech stacks, and SIRET in 0.4 s per row. One paste, no scaffolding.
The Derrick MCP works with any Model Context Protocol client. Below are paste-ready snippets for the three most common Claude surfaces.
In any project directory, run the command below. Claude Code stores the MCP config locally so you only need to do this once per machine. The server prompts for your Derrick API key on the first tool call - no key required at install.
claude mcp add derrick -- npx -y derrick-mcpIf you already have your Derrick API key handy, set it at install time so the server doesn't prompt :
claude mcp add derrick --env DERRICK_API_KEY=$YOUR_KEY -- npx -y derrick-mcpRun npx -y derrick-mcp --version to confirm the package resolves, then in Claude Code type /mcp to see derrick listed.
Edit your Claude Desktop config file and add the snippet below under
mcpServers. Then restart Claude Desktop. The server requests
your Derrick API key on the first tool call.
macOS : ~/Library/Application Support/Claude/claude_desktop_config.json
Windows : %APPDATA%\Claude\claude_desktop_config.json
{
"mcpServers": {
"derrick": {
"command": "npx",
"args": ["-y", "derrick-mcp"]
}
}
}Add an env block to the snippet to skip the first-call prompt :
"env": { "DERRICK_API_KEY": "<your-key>" }In the web Claude app, open Settings → Customize → Connectors and add a new MCP server with the URL below. The server prompts for your Derrick API key the first time you call a tool - or pre-seed it via the Auth header field shown below.
https://app1.derrick-app.com/mcpAuthorization: Bearer <your-api-key>Need your API key ? Open the Derrick Google Sheets add-on → Settings → API access.
npm package · derrick-mcp · Server card · /.well-known/mcp/server-card.json
Every tool is a single MCP call. The agent chains them automatically based on your prompt - no orchestration code to write.
From a LinkedIn URL or name + company, returns the best available email + confidence score.
derrick_find_email Mobile or office phone number associated with a LinkedIn profile or contact name.
derrick_find_phone 100+ data points about a person : job title, seniority, location, tenure, past roles.
derrick_enrich_profile Headcount, industry, funding, HQ, social profiles. Works from company name, domain, or URL.
derrick_enrich_companies French legal entity data : SIRET, SIREN, NAF code, registered address, capital.
derrick_data_gouv Detect technologies a company uses : CRM, analytics, hosting, frameworks, payment, ATS.
derrick_find_tech Real-time SMTP verification : valid, risky, catch-all, role-based, disposable.
derrick_verify_email Query by job title + company + location. Returns ranked profile URLs.
derrick_search_linkedin_profile Find companies matching industry / size / geography / tech stack filters.
derrick_search_companies Within a target company, return leads matching a job-title pattern (e.g. all Heads of Growth).
derrick_search_leads_in_companies Scrape a company website for emails, phones, and social profiles in the footer / contact page.
derrick_website_contact_social Google's #1 result for any query. Useful for verifying a company's official URL or news.
derrick_serp_first_result Once Derrick MCP is installed, these prompts work out of the box. The agent picks the right tools, chains them, and returns structured output.
Find 50 Series-A SaaS companies in France with 50-200 employees that use HubSpot. For each, return name, domain, HQ city, and the LinkedIn URL of the Head of Sales.
derrick_search_companiesderrick_enrich_companiesderrick_search_leads_in_companies I'll paste a CSV of 30 LinkedIn URLs. For each, give me the person's professional email, phone, current company, job title, and country. Output as a Markdown table.
derrick_enrich_profilederrick_find_emailderrick_find_phone I'll paste 100 emails. Verify each (valid / risky / invalid). Group by status. For 'risky', explain the reason in 1 line each.
derrick_verify_email List the technologies used by competitor.com. Compare with my notes from 3 months ago (I'll paste them) and highlight added/removed tools.
derrick_find_tech Yes - the MCP server installs without any credentials. The first time you call one of its tools, the server asks for your Derrick API key (returned as a structured error the agent surfaces). You can also pre-seed the key via the DERRICK_API_KEY env var or the --env flag at install time to skip that prompt entirely.
The MCP installs free, but actually calling tools requires an API key - and API keys are unlocked starting on the Standard plan (€20/mo, 10,000 credits). The Free (100 credits) and Mini (€9/mo, 4,000 credits) tiers don't expose API/MCP access.
Credit cost is per endpoint, not flat. Examples: find_email = 5 credits, find_phone = 150 credits, enrich_profile = 1 credit, verify_email = 1 credit, search_companies = 1 credit per result. See the capabilities grid above for the exact cost of each tool. €/credit varies by plan - Standard €0,002, Plus €0,0019, Pro €0,00175. The MCP exposes a derrick_credits tool that returns your real-time balance.
Yes. Every call hits the same backend as the Sheets add-on, which cross-references 15+ data providers in real time per request. There's no batch cache lag : if a person's email changed yesterday, you get the new one today.
Yes. The Derrick MCP follows the official Model Context Protocol spec, so any compliant client (Cursor, Windsurf, Continue, custom agents built with the MCP SDK, …) can connect. The install commands shown above are Claude-specific but the JSON config pattern translates directly to other clients.
Same backend, different surface. The REST API is for code-level integrations (Zapier, Make, your own scripts). The MCP is for AI agent workflows - Claude / Cursor / Windsurf call it natively as tools, so you can prompt "find me 50 leads matching X" in plain English and the agent figures out which tools to chain.
Yes. Derrick processes only publicly-available B2B data (LinkedIn profiles, company websites, public registries) and stores nothing : every MCP call is stateless. Our DPA is available on the DPA page for enterprise customers.
60 requests / minute on all paid plans. Backoff is exponential with jitter on 429 (initial delay 2 s, max 60 s). The MCP client and the derrick-mcp npm package handle retries automatically so you rarely hit the wall in normal agentic workflows.
Open the Derrick add-on inside Google Sheets → Settings (top right) → API access → Copy your key. If "API access" doesn't show, you're on the Free or Mini plan and need to upgrade to Standard (€20/mo) to unlock it.
Free tier on the Sheets add-on. The MCP installs free too - API access unlocks from the Standard plan upward.
Install Derrick free →