Scrupp MCP server

Scrupp MCP server

An MCP server over the Scrupp Jobs API, so an agent can export LinkedIn, Sales Navigator and Apollo searches, find decision makers, and find and verify work emails without anyone writing HTTP calls. Ships as scrupp-mcp-server on npm and in the official MCP registry as io.github.wismhero-maker/scrupp. Overview: https://scrupp.com/email-finder-mcp

In Claude (no install)

Add https://mcp.scrupp.com/mcp as a custom connector in Claude and sign in to Scrupp. It finds and verifies work emails on any Scrupp plan, including the free one. Scrupp customers who want the full tool set use the private connector described in the setup guide. Setup steps, what each tool needs and troubleshooting: https://scrupp.com/docs/api/claude

In Claude Code (plugin)

/plugin install scrupp --marketplace Wism-Corp/scrupp-mcp-server

On Claude Code older than 2.1.275, in two steps:

/plugin marketplace add Wism-Corp/scrupp-mcp-server
/plugin install scrupp@scrupp

The plugin connects Claude Code to Scrupp's private hosted connector, with the same full tool set as the private Claude connector, so nothing is installed locally. The first time a tool runs, open /mcp, pick scrupp and sign in to Scrupp.

The plugin carries two things:

• .mcp.json — the hosted connector above, signed in with OAuth.
• skills/scrupp-prospecting — how Claude should use the tools: check credits first, pick the tool from what the user has, export five records as a sample before the whole search, collect long jobs with scrupp_get_job, and what to say when a tool refuses.

Check it before a release with claude plugin validate ..

Using it

{
  "mcpServers": {
    "scrupp": {
      "command": "npx",
      "args": ["-y", "scrupp-mcp-server"],
      "env": { "SCRUPP_API_KEY": "sk_live_..." }
    }
  }
}

SCRUPP_WAIT_SECONDS (default 120) caps how long a tool blocks. A job that outruns it comes back as { status: "running", job_id } with a note telling the agent to call scrupp_get_job — better than holding a conversation open for twenty minutes on a 2,500-record export.

Tools

Tool	What it does
scrupp_export_sales_navigator_search	People out of a Sales Navigator search URL
scrupp_export_linkedin_search	People out of a LinkedIn people-search URL
scrupp_run_apollo_search	People out of an Apollo search URL (needs a connected account)
scrupp_enrich_linkedin_profiles	Full profile data for profile URLs
scrupp_lookup_company	Company data by domain, LinkedIn URL or name
scrupp_find_decision_makers	Who to write to at a company
scrupp_find_emails	Verified work emails from name + domain
scrupp_verify_emails	Deliverability check for addresses you already have (1 credit each)
scrupp_get_job	Status and records for a job that was still running
scrupp_credits	Remaining credits and plan

Every tool carries a title and readOnlyHint / destructiveHint annotations — the Claude connectors directory rejects a server without them.

Hosted connector (Streamable HTTP)

node src/http.js (or scrupp-mcp-http) serves the same server over Streamable HTTP at POST /mcp, stateless, with GET /health for a load balancer. PORT defaults to 8787. Each request authenticates with the caller's own key as Authorization: Bearer sk_live_...; the key is scoped to that request, so one process serves many accounts without mixing them up.

The hosted connector exposes a narrower tool set than the local server: email finding, email verification, job status and credits. The tools that gather data from LinkedIn (Sales Navigator, LinkedIn search, profile enrichment) or answer from the shared lead base (company lookup, decision makers), and the Apollo export, stay local-only — they run through accounts that are not the caller's, which is not something to put in a public directory listing.

Try it in Claude Code against a deployed instance:

claude mcp add --transport http scrupp https://mcp.scrupp.com/mcp \
  --header "Authorization: Bearer sk_live_..."

Private connector with the full API

A second endpoint serves a fuller tool set for Scrupp customers who add it by URL (Claude.ai: Settings → Connectors → Add custom connector; the address is in the setup guide at https://scrupp.com/docs/api/claude). It is not listed in the directory and works on every Scrupp plan. On top of the core tools it has the rest of the API: scrupp_build_sales_navigator_search (audience in words → a Sales Navigator search URL with the size Sales Navigator reports, no credits), scrupp_export_sales_navigator_search, scrupp_export_linkedin_search, scrupp_run_apollo_search, scrupp_enrich_linkedin_profiles (optionally with emails), scrupp_lookup_company and scrupp_find_decision_makers.

When the caller has a LinkedIn account with Sales Navigator connected with the Scrupp extension, all of them run only on that account. Without one, they run on Scrupp's shared account pool, which is open to paid plans. The Scrupp API decides this, not this server.

The OAuth resource is what tells the two apart: each endpoint's protected-resource metadata names its own resource, and app.scrupp.com issues the private connector's key (connector:claude-sn) only for the private resource. A key from the /mcp connector gets 403 on everything beyond email finding even if it is sent to the private endpoint.

Connecting with OAuth

Users of Claude.ai, Claude Desktop and Claude Code don't paste a key: they press Connect, sign in to Scrupp and allow access. The server advertises its authorization server at /.well-known/oauth-protected-resource (RFC 9728) and answers an unauthenticated request with 401 and a WWW-Authenticate header pointing there. The authorization server itself lives in the Scrupp app at app.scrupp.com (/oauth/register, /oauth/authorize, /oauth/token); the access token it issues is an ordinary Scrupp API key marked connector:claude, which the API restricts to the four tools above. Access tokens last an hour, so the server checks the token before each request (cached for a minute) and answers 401 invalid_token when it has expired, which is what makes the client refresh it.

Variable	Default	Meaning
PORT	8787	Listen port
MCP_PUBLIC_URL	https://mcp.scrupp.com	Public URL of this server, used in the metadata
SCRUPP_AUTH_SERVER_URL	https://app.scrupp.com	Where OAuth tokens are issued
SCRUPP_API_URL	https://api.scrupp.com/api/v1	Scrupp API the tools call

Tool descriptions are written for a model, not a human: they say when to reach for the tool, not just what it does. That is the whole ranking signal in a registry — a listed server with vague descriptions gets picked and then misused.

Publishing

1. Move this directory to its own repo, Wism-Corp/scrupp-mcp-server — the MCP registry validates ownership from the repository and the mcpName in package.json.
2. npm publish --access public with provenance from GitHub Actions, the same workflow shape as n8n-nodes-scrupp.
3. Publish the registry entry:

   npx @modelcontextprotocol/publisher login github
   npx @modelcontextprotocol/publisher publish
   

   It reads server.json, checks the npm package carries the matching mcpName, and lists the server.
4. Then the downstream directories, which read from the registry or take a form: Smithery, Glama, mcp.so, PulseMCP, and Anthropic's connectors directory.

Testing before publishing

npm install
SCRUPP_API_KEY=... npx @modelcontextprotocol/inspector node src/index.js

Run scrupp_credits first (free), then scrupp_find_emails with two people — the cheapest call that exercises create → poll → result.