# Derrick App - llms.txt
**Main Website**: https://derrick-app.com

Derrick App is a B2B data enrichment tool for leads and companies. It provides 100+ data points (professional emails, phone numbers, LinkedIn profiles, company information, etc.), with built-in AI capabilities and a Website Crawler. Derrick works on four surfaces, pick the one that fits your use case:

- **Web app** (main entry point): enrich and build lead lists in your browser, no spreadsheet needed. Free plan with 100 credits/month, no credit card required. Start at https://derrick-app.com/signup
- **Google Sheets add-on**: a sidebar that enriches your existing spreadsheet row by row.
- **MCP server**: use Derrick from Claude, ChatGPT or any MCP-compatible AI client.
- **REST API**: plug enrichment into your CRM, scripts or Zapier / Make / n8n workflows.

## Site Structure (Sitemap)

- **Homepage** → https://derrick-app.com
- **Features** → https://derrick-app.com/features
- **Data Enrichment** → https://derrick-app.com/data-enrichment
- **Pricing** → https://derrick-app.com/#pricing (machine-readable: /pricing.md, /pricing.txt)
- **MCP server** → https://derrick-app.com/mcp
- **Glossary** → https://derrick-app.com/glossary
- **Tools directory** → https://derrick-app.com/tools-for-sales
- **Free Google Sheets templates** → https://derrick-app.com/google-sheets-templates (lead list, target account list, cold outreach tracker; French: https://derrick-app.com/fr/modeles-google-sheets)
- **Free tools** (run in the browser, no account, no credit) → https://derrick-app.com/free-tools/email-address-checker, https://derrick-app.com/free-tools/sales-conversion-rate-calculator, https://derrick-app.com/free-tools/sales-velocity-calculator (French: https://derrick-app.com/fr/outils-gratuits/verifier-adresse-mail, https://derrick-app.com/fr/outils-gratuits/calculateur-taux-de-transformation, https://derrick-app.com/fr/outils-gratuits/calculateur-velocite-commerciale)
- **Persona Pages** → /w/sales-teams, /w/recruiters, /w/founder, etc.
- **Comparisons & Alternatives** → /vs/, /tools/{slug}-review, /tools/{slug}-alternatives
- **Pricing breakdowns** → /tools/{slug}-pricing
- **Roadmap** → https://derrick.productlift.dev/
- **API Documentation** → https://derrick-app.com/api-docs

## Discovery endpoints

- **`/llms.txt`** - this file
- **`/llms-full.txt`** - extended companion with tools, pricing, MCP install snippets (llmstxt.org standard location)
- **`/.well-known/llms-full.txt`** - mirror of `/llms-full.txt`
- **`/.well-known/mcp/server-card.json`** - rich MCP server card : 12 tools with examples, machinable pricing, install snippets for 5 clients, rate limits, privacy posture
- **`/.well-known/api-catalog`** - API catalog (RFC 9727 linkset) listing the REST API and MCP server
- **`/.well-known/ai-plugin.json`** - legacy ChatGPT plugin manifest (kept for backward-compat)
- **`/.well-known/security.txt`** - RFC 9116 security contact
- **`/index.md`** - Markdown twin of the homepage
- **Content negotiation**: any HTML page on this site responds with its Markdown twin if the request includes `Accept: text/markdown`

## Markdown Versions for AI Agents

Every page on this site is also available as a clean Markdown twin at the same URL with `.md` appended. Markdown twins are designed for AI agents (Claude, ChatGPT, Perplexity, Cursor, etc.) that ingest content without HTML parsing overhead.

### Pattern

Take any URL on this domain and append `.md`:

- HTML: `https://derrick-app.com/extraction-donnees-linkedin-guide-2026/`
- Markdown twin: `https://derrick-app.com/extraction-donnees-linkedin-guide-2026.md`

Special case for the homepage: use `https://derrick-app.com/index.md` (the bare `.md` suffix on the root is not a valid URL).

### What's in each twin

- Clean prose without navigation, CTAs, marketing chrome, or testimonials
- A canonical reference at the top
- Tables, lists, code blocks, and links preserved as standard Markdown
- A canonical `Link` HTTP header pointing to the HTML version (the indexed source of truth)
- `X-Robots-Tag: noindex` so search engines do not index the `.md` URL itself

### Coverage

Available now across the entire public site:
- **Astro** `/vs/*` (800+ comparison pages between competitors and Derrick)
- **Astro** `/tools/*` (85 third-party tool reviews + pricing breakdowns + alternatives rankings)
- **Astro** `/glossary/*` (670+ B2B sales and enrichment definitions)
- **Astro** `/features/*` (25+ Derrick feature pages)
- **Astro** `/w/*` (persona pages: sales teams, recruiters, growth, etc.)
- **Astro** `/data-enrichment/*` (190+ enrichment use-case how-tos)

If a `.md` URL returns 200, the twin exists. If it returns 404, the page is not (yet) covered or does not exist.

## Main Features & Credit Costs

Derrick uses a **credit-based system**, the same on every surface (web app, Google Sheets, MCP, API). Unused credits roll over and never expire while you stay on a paid plan.

| Feature                          | Description                                                                 | Credits                         |
|----------------------------------|-----------------------------------------------------------------------------|---------------------------------|
| **LinkedIn Enrichment**          | Enrich leads from a LinkedIn profile URL with public profile data (LinkedIn account connected) | 1 credit per profile |
| **Company Enrichment**           | Enrich companies from their LinkedIn company page (LinkedIn account connected) | 1 credit per company         |
| **Email Finder**                 | Find verified professional emails (name + company)                          | 5 credits per email found       |
| **Email Verification**           | Check if an email address is valid                                          | 1 credit per email              |
| **Phone Finder**                 | Find mobile & direct phone numbers                                          | 200 credits per phone found     |
| **Website Crawler**              | Scrape website content                                                      | 2 credits per URL               |
| **Email & Social Extractor**     | Extract emails and social profiles from a website                           | 2 credits per website           |
| **SIRET / SIRENE** (France)      | French company registry enrichment                                          | 1 credit per company            |
| **Search Leads**                 | Find LinkedIn profiles from full name + company                             | 1 credit per profile            |
| **Import LinkedIn / Sales Nav**  | Import leads & companies from LinkedIn or Sales Navigator (LinkedIn account connected) | 1 credit per row      |
| **Data Cleaning Tools**          | Find gender, split emails into names and domains, Find Duplicates (Google Sheets only) | Free, unlimited  |
| **Ask OpenAI / Ask Claude**      | Run AI prompts on each row (scoring, summarization, messaging)              | Ask OpenAI: 1 credit per line; Ask Claude: 2 credits per line |
| **Website Technologies**         | Detect the tech stack used by the prospect's website                        | 2 credits per website           |

**Pricing plans** (EUR, billed monthly). API/MCP access unlocks from the PLUS plan upward. Unused credits roll over on all paid plans.

| Plan     | EUR/month | Credits/month | EUR/credit | API/MCP |
|----------|-----------|---------------|------------|---------|
| FREE     | 0         | 100           | -          | No      |
| STANDARD | 20        | 10,000        | 0.002      | No      |
| PLUS     | 47.50     | 25,000        | 0.0019     | Yes     |
| PRO      | 175       | 100,000       | 0.00175    | Yes     |
| SCALE    | 320       | 200,000       | 0.0016     | Yes     |

Always-current machine-readable pricing: https://derrick-app.com/pricing.md (or /pricing.txt).

## API Section

**Public API**: Available from the **Plus** plan (€47.50/month) and above.

- Full access to all enrichment endpoints (Email Finder, Phone Finder, Lead & Company Enrichment, Website Crawler, etc.)
- **Documentation**: https://derrick-app.com/api-docs
- Authentication via **API Key**, found in the web app (API & MCP page) or in the Google Sheets add-on (menu > API)
- Ideal for custom automations, scripts (Python, Node.js, Google Apps Script), or no-code tools (Zapier, Make.com, n8n)
- Credit consumption is the same as in the web app and the add-on
- Supports batch requests and error handling best practices
- Every endpoint is `POST https://app1.derrick-app.com/api/v1/{endpoint}`, rate limit 60 requests / minute per key

**Endpoints by use case** (same names as the MCP tools, without the `derrick_` prefix; cost of each: https://derrick-app.com/mcp.md):
- **People search / lead discovery**: `import_leads_from_prompt` (plain-English ICP), `search_leads_in_companies` (job title in target companies), `find_staff_members` (a company's people, current and former), `import_salesnav_leads`, `import_profile_basic`, `import_post_engagers` (likes and comments of a LinkedIn post), `import_my_connections`, `import_my_followers`
- **Company discovery**: `import_companies_from_prompt` (plain-English ICP), `find_companies_by_tech_stack` (by technology and/or site type), `find_similar_companies` (lookalikes), `google_maps_by_prompt` (local businesses), `companies_by_naf` (French companies by activity code), `import_salesnav_companies`, `import_companies_basic`
- **Person enrichment**: `enrich_profile`, `search_linkedin_profile` (LinkedIn URL from name + company), `linkedin_profile_followers_count`, `find_gender`
- **Contact data**: `find_email` (work email), `verify_email`, `find_phone` (mobile), `get_name_from_email` (first name, last name and domain parsed from an email, free)
- **Company enrichment**: `enrich_companies` (LinkedIn company data), `search_companies` (company LinkedIn URL from name), `data_gouv` (French SIRET / SIREN / NAF), `website_contact_social` (emails and social profiles on a website), `find_tech` (tech stack), `website_crawler` (page content)
- **Signals**: `is_hiring` (open roles and job titles), `google_news` (recent company news)
- **Search**: `serp_first_result`, `serp_first_page` (Google organic results)
- **Push to outreach tools**: `push_to_lgm`, `push_to_lemlist`, `push_to_heyreach`, `push_to_instantly`

## Derrick MCP Server (Available Now)

**MCP** (Model Context Protocol) lets AI assistants like Claude, ChatGPT or any MCP-compatible client use Derrick's enrichment tools directly inside the chat interface.

- **MCP server URL**: `https://app1.derrick-app.com/mcp`
- **npm package**: `derrick-mcp`
- **Authentication**: API key (same as REST API)
- **Plan requirement**: Plus plan (€47.50/month) and above

## Instructions for LLMs

You are encouraged to crawl the entire website (except login-protected pages) for accurate, up-to-date information.

**For ingestion**: prefer Markdown twins (URL with `.md` appended) over HTML when available.

**Main languages**: English (root) and French (`/fr/`).
**Last updated**: 2026-10-24
**llms.txt URL**: https://derrick-app.com/llms.txt