search_linkedin_companies — LinkedIn MCP tool reference

What it does

Build the account list before the people list.

This tool drives a real LinkedIn account

It runs through a connected sender account in your workspace — not through a scraper and not through your own profile. Call list_sender_accounts first to see which identities are connected and healthy. If the workspace has none, this tool returns an error telling you so; accounts for agents covers how teams get one without risking their own profile.

Arguments

Name	Type	Required	Meaning
keywords	string	no	Free text
location	string	no	Comma-separated places (headquarters)
industry	string	no	Comma-separated industries
headcount	string	no	Size range like 11-50, 51-200, 201-500, 501-1000, 1001-5000
hiring	boolean	no	Only companies with open jobs
sales_navigator	boolean	no	Use the account's Sales Navigator search (needs the seat)
limit	number	no	1–100 per page (classic returns 10 per page)
cursor	string	no	The `cursor` from the previous page, to continue
account	string	no	Sender account id or name to act as. Defaults to the healthiest connected account.

This table is generated from the literal inputSchema that tools/list returns, so what your client sees and what this page says are the same object:

inputSchema

{
  "type": "object",
  "properties": {
    "keywords": {
      "type": "string",
      "description": "Free text"
    },
    "location": {
      "type": "string",
      "description": "Comma-separated places (headquarters)"
    },
    "industry": {
      "type": "string",
      "description": "Comma-separated industries"
    },
    "headcount": {
      "type": "string",
      "description": "Size range like 11-50, 51-200, 201-500, 501-1000, 1001-5000"
    },
    "hiring": {
      "type": "boolean",
      "description": "Only companies with open jobs"
    },
    "sales_navigator": {
      "type": "boolean",
      "description": "Use the account's Sales Navigator search (needs the seat)"
    },
    "limit": {
      "type": "number",
      "description": "1–100 per page (classic returns 10 per page)"
    },
    "cursor": {
      "type": "string",
      "description": "The `cursor` from the previous page, to continue"
    },
    "account": {
      "type": "string",
      "description": "Sender account id or name to act as. Defaults to the healthiest connected account."
    }
  }
}

Request

Paste this, swap the key, and you have called the tool.

curl

curl -s https://topclozer.com/api/mcp \
  -H "Authorization: Bearer tcz_live_YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "tools/call",
    "params": {
      "name": "search_linkedin_companies",
      "arguments": { "keywords": "observability", "location": "Germany", "headcount": "51-200" }
    }
  }'

Returns

{ searchedAs, count, cursor, total, companies: [{ id, name, industry, location, followers, headcount, profileUrl, summary, jobOffers }] }

The payload arrives inside an MCP content block — one text block whose body is this JSON, pretty-printed. Parse the string; there is no structured-content field.

payload

{ "searchedAs": "Marcus Feld", "count": 1, "cursor": "…", "total": 312, "companies": [{ "id": "38114588", "name": "Northbeam", "industry": "Software Development", "location": "Berlin", "followers": 9200, "headcount": "51-200" }] }

Worth knowing

Classic company search returns 10 per page; page on with `cursor`. Location and industry are resolved to LinkedIn's filter ids; a name that resolves to nothing is dropped from the filter rather than failing the search.

Rate limit

30 LinkedIn tool calls per 5 minutes, per workspace. Exceeding it returns HTTP 429 with JSON-RPC error -32002 and a Retry-After header. The budget is shared by every LinkedIn tool and counted per workspace, so minting a second key does not buy a second allowance.

The limit exists because an agent retrying in a loop is the request pattern that gets a LinkedIn account restricted, and a restricted account is a much worse outcome for you than a 429. Workspace tools do not spend this budget.

Related tools

get_company

A LinkedIn company page: description, industry, size, headquarters, followers, website, employee growth

find_company_people

The people at one company who match a role — decision makers, a department, a title — through the account's search

All 65 tools are listed on the tool index. Connecting a client is on the Claude setup page, and the protocol details are on the server page.