# Derrick
ID: 01-derrick
Page: https://gtmmcps.com/tools/01-derrick
JSON: https://gtmmcps.com/data/tools/01-derrick.json
Documentation references: https://gtmmcps.com/docs/01-derrick/
Category: Data & Enrichment
MCP support: official
Testing: RESEARCHED
API access: paid
Last checked: 2026-09-07
Endpoint check: not-probed; date: Not recorded

A credit-metered B2B enrichment engine sold primarily as a Google Sheets add-on, plus a REST API and a hosted MCP server, covering email finding, mobile phone finding, LinkedIn profile lookup, company firmographics, website technology detection and the French SIRET company registry.

## MCP links
- https://app1.derrick-app.com/mcp
- https://derrick-app.com/mcp
- https://github.com/DerrickAppOrg/derrick-mcp

## Sources
- https://derrick-app.com/mcp
- https://app1.derrick-app.com/mcp
- https://derrick-app.com/
- https://github.com/DerrickAppOrg/derrick-mcp

## Research notes
Verified 2026-09-07: POST of an MCP initialize to https://app1.derrick-app.com/mcp returned HTTP 401 with {"error":"invalid_token","error_description":"Missing Authorization header"}, confirming a live auth-gated server. DEFECT ON THE VENDOR'S OWN PAGE, recorded rather than resolved: derrick-app.com/mcp states three different things about the plan floor in three places. Its FAQ says keys "unlock from the PLUS plan (47.5 euros/mo)"; a call-to-action block earlier on the same page says "MCP access from Standard (20 euros/mo)"; and a third line renders an unsubstituted template variable, reading "API access unlocks from the ${API_UNLOCK_TIER} plan". The FAQ figure was taken as the api_gate value because it is the most specific and sits in the section that answers the question directly, but a solo operator should confirm with support before purchase. The page also publishes per-tool credit costs (find_email 5, find_phone 150, enrich_profile 1, verify_email 1, search 1 per result) and states 100 credits per month are free to start, so a phone number costs thirty times an enrichment on the same balance and an unattended agent can drain a plan quickly. 2026-09-07: GitHub org DerrickAppOrg; README "# Derrick MCP Server ... B2B data enrichment tools for any MCP-compatible AI client"; tree contains src/server.ts and src/tools.ts. npm package derrick-mcp is published by user derrick_app and points at this repo (https://github.com/DerrickAppOrg/derrick-mcp).

## Named capabilities
Tool names below are reported by sources. Their presence is not a successful call.
- derrick_account: ; evidence: source; party: first-party
- derrick_configure: ; evidence: source; party: first-party
- derrick_credits: ; evidence: source; party: first-party
- derrick_help: ; evidence: source; party: first-party
- derrick_upgrade: ; evidence: source; party: first-party

## CLI evidence
Status: community
- Reported install command: npm install -g derrick-cli; source: https://www.npmjs.com/package/derrick-cli
- Reported install command: npm install -g create-derrick-project-cli; source: https://www.npmjs.com/package/create-derrick-project-cli

Read current vendor documentation before configuring or running commands.