Coresignal MCP

Coresignal MCP v2 is a server that connects Coresignal's data directly to LLM-powered applications, including Claude, Cursor, and others. It gives AI assistants access to Coresignal's multi-source company, employee, and job data from within the chat interface. The server handles query construction, authentication, credit accounting, and result delivery, enabling an agent to work with large-scale data without manually building API calls.

Find available information on GitHub.

Features

• Per-team OAuth

  Access requires sign-in, with users authenticating via the Coresignal dashboard. The server verifies the signed token for each request and retrieves the team's API key, ensuring no key is stored on the server.

• Natural-language search

  Describe the data you want in simple language. The server creates a query and returns relevant results. It explains the search process and what's included in the results. You may also receive follow-up questions to refine your prompt for more accurate results.

• Data field discovery

  Get data you need by searching for the right data fields. Discovery uses semantic search to find all matching top-level and nested data fields related to the keywords used in the prompt. This is useful for exploring what data is available for a given entity. Data field discovery requests incur no credit cost, allowing unlimited use during query formulation.

• Credit reporting and consent before spend

  Each response shows the exact credits used for the request, providing detailed per-call spending information.

  Small, inexpensive data previews continue seamlessly, but requests with potentially high costs require a check-in first. Before performing a large or expensive data retrieval, the server pauses to verify the scope, including the record count and estimated credit cost.

• Automatic file delivery

  Inline delivery is the primary mode of interaction: results are returned as a preview, which indicates whether your prompt is efficient. A file is created instead when you request the complete available record data. The response includes a link to the file, keeping large pulls, such as thousands of records, from overwhelming the conversation, while the complete data remains available for further processing. Remember that enabling downloads from third-party tools isn't universal: review each tool's documentation to set up the required permissions (e.g. Claude desktop).

Endpoint

Use the following endpoint to connect to the Coresignal MCP server:

Setting	Value
Endpoint	https://mcp.coresignal.com/mcp/v2
Transport	Streamable HTTP
Authentication	OAuth 2.1 sign-in via the Coresignal dashboard
Local install required	No
API key required	No. The server fetches your team's key live on request

An older endpoint, https://mcp.coresignal.com/mcp, remains supported and is documented at the bottom of this page under Legacy Coresignal MCP. It will eventually be deprecated, so new integrations should use v2.

Prerequisites

Before you begin, ensure you have:

• A Coresignal account. If you don't have one yet, you can register in Coresignal dashboard.

• Available credits for search, record pull, and email enrichment actions.

• An MCP-compatible client that supports remote servers over Streamable HTTP.

• A browser for the one-time sign-in flow.

Connect Coresignal MCP

Choose the option to add a custom or remote server and use https://mcp.coresignal.com/mcp/v2 to connect to Coresignal MCP. Several MCP-compatible clients integrations steps are listed below.

Claude Code

Run this in your terminal:

claude mcp add coresignal --transport http https://mcp.coresignal.com/mcp/v2

Then verify the connection:

claude mcp list
# coresignal: https://mcp.coresignal.com/mcp/v2 (HTTP) - / Connected

Codex

Run this in your terminal:

codex mcp add coresignal --url https://mcp.coresignal.com/mcp/v2

Then verify the connection:

codex mcp list
# coresignal: https://mcp.coresignal.com/mcp/v2 (HTTP) - / Connected

AntigravityCLI

Edit ~/.gemini/config/mcp_config.json file

{
 "mcpServers": {
  "coresignal": {
   "url": "https://mcp.coresignal.com/mcp/v2"
  }
 }
}

OpenCode

Run this in your terminal:

opencode mcp add coresignal --url https://mcp.coresignal.com/mcp/v2

Then verify the connection:

opencode mcp list
# coresignal: https://mcp.coresignal.com/mcp/v2 (HTTP) - / Connected

Cursor

Open Settings → Tools & MCPs → Add Custom MCP and paste:

{
 "mcpServers": {
  "coresignal": {
   "url": "https://mcp.coresignal.com/mcp/v2"
  }
 }
}

Available tools and cost

All requests use the same Coresignal credit balance as other activities in your account. Costs are fixed per action and are included in each response.

Tool	Action	Description	Credits
entity_search	Natural-language search	Describe the data you want in natural language. The server builds a query, explains the search, and returns results with an exact-match count and a preview.	20 credits per search
entity_fields	Data field discovery	Semantic search across top-level and nested fields, for scoping a query or exploring what's available on an entity.	Free
entity_fetch	Full profile pull	Retrieve a complete company, employee, or job record.	1-20 credits per record. See Pricing
email_enrich	Email enrichment	Get a publicly accessible, strictly business-related work email for an employee. The system's public email lookups automatically exclude employees in the EEA and UK to comply with GDPR. Blocked lookups are not charged.	10 credits per email

Limitations

Coresignal MCP has several limitations:

• Business-related email enrichment cannot be provided for employees in the European Economic Area (EEA) and the United Kingdom (UK) due to privacy regulations.

• Tool availability may vary by MCP client and rollout status.

Sample queries and flows

See illustrative sample flows that can help you craft your own requests effectively.

All personal/company information mentioned within this context is entirely fictional and is solely intended for illustrative purposes.

Lead generation and enrichment

1. Describe what you are looking for

Client types:

Find marketing directors at US software companies with 200–1,000 employees.

Assistant replies:

8,214 people match. Here are the first 10 so you can check the fit – each one shows the exact role that matched your criteria.

1. Narrow it down

Client types:

Only companies that raised funding in the last two years.

Assistant replies:

Now 1,930 people. The preview shows each person's company and its latest funding round.

1. Build the list – delivered as a file

Client types:

Great – pull the top 50 with name, title, company, and profile, as a file.

Assistant replies:

Name	Title	Company	Location
Sarah Mitchell	VP Marketing	Brightpath Software	Austin, TX
Daniel Okafor	Marketing Director	Cloudline Systems	Denver, CO
Emma Ruiz	Head of Growth	Parkstone Labs	San Diego, CA

… full 50 in the file below.

FILE marketing-directors-top50.jsonl
50 complete records · private download link, ready for CRM import

Investment research or due diligence

1. Describe what you are looking for

Client types:

Tell me everything about Voltaic Dynamics (voltaicdynamics.com).

Assistant replies:

Voltaic Dynamics · Industrial robotics · Munich, DE

Founded	2016
Headcount	412 – +34% year over year
Latest funding	Series C, $60M (Oct 2025)
Key executives	11 listed, with arrival dates

1. Ask about the leadership team

Client types:

Who joined or left the leadership team in the last year?

Assistant replies:

2 arrivals (a CTO in Jan 2026, a VP Sales in Mar 2026), 1 departure (CFO, Nov 2025) — pulled from the same profile, no extra cost.

1. Get details about the growth signals

Client types:

How many roles are they hiring for right now, and in which teams?

Assistant replies:

23 open roles – 14 in engineering, 9 in sales. Hiring velocity as a due-diligence signal, in one question.

1. Export a file

Client types:

Export the complete profile as a file.

Assistant replies:

FILE voltaic-dynamics-full-profile.jsonl
The entire company record, every field · private download link for the data room

Market or competitive analysis

1. Describe what you are looking for

Client types:

How many companies in Germany sell HR software?

Assistant replies:

1,204 companies match. Want a preview, a breakdown, or the full list?

1. Ask for other countries

Client types:

Same question for the UK, France, and the Nordics.

Assistant replies:

Market	HR software companies
Germany	1,204
United Kingdom	986
France	743
Nordics	611

Illustrative counts.

1. Build the list – delivered as a file

Client types:

Export the full German list as a file for my spreadsheet.

Assistant replies:

FILE german-hr-software-companies.jsonl
1,000 records · download link, ready for a spreadsheet or CRM import

Legacy Coresignal MCP

Legacy Coresignal MCP is a server that connects Coresignal's latest Multi-source Company API, Multi-source Employee API, and Base Jobs API information directly within chat interface.

Prerequisites

To connect to the remote Legacy Coresignal MCP server using mcp-remote you need to have Node.js installed.

We recommend using Node.js v24 for optimal compatibility and performance with Legacy Coresignal MCP. Node.js v24 is the version we validate and support to ensure a smooth setup experience.

Credits for requests performed through the MCP server will also be deducted from the same credit balance.

Integration with AI assistants

Learn integration steps for a few AI assistant tools.

Enter your API Key as the <api_key> value. Get your key from Coresignal's self-service platform.

Do not forget to refresh the tool after the integration steps.

Claude Desktop

To set up your Claude Desktop assistant, add this entry to your claude_desktop_config.json file:

Access

{
    "mcpServers": {
        "coresignal_data_api": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.coresignal.com/mcp",
                "--header",
                "apikey:${AUTH_HEADER}"
            ],
            "env": {
                "AUTH_HEADER": "<api_key>"
            }
        }
    }
}

Cursor

Cursor has integrated support for MCP servers:

1. Go to: Cursor > Settings > Cursor Settings > MCP

2. Click on the Add new global MCP server button

3. Add the following configuration:

Access

{
    "mcpServers": {
        "coresignal_data_api": {
            "command": "npx",
            "args": [
                "mcp-remote",
                "https://mcp.coresignal.com/mcp",
                "--header",
                "apikey:${AUTH_HEADER}"
            ],
            "env": {
                "AUTH_HEADER": "<api_key>"
            }
        }
    }
}

Available tools

The Legacy Coresignal MCP server gives access to several API data entities:

• coresignal_company_multisource_api – data from Multi-source Company API

• coresignal_employee_multisource_api – data from Multi-source Employee API

• coresignal_job_api – data from Base Job API