# Cold Leads (npm · @coldleads/mcp-server)

B2B outreach CRM for AI agents: contacts, verification, approved campaigns, replies, follow-ups.

- Trust score: 84/100 (high trust)
- Change this week: +5
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-10-23

## Components

- remote · `coldleads.app`: 38/100, [markdown](https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/api-mcp.md), [page](https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/api-mcp)
- npm · `@coldleads/mcp-server`: 84/100 (this document), [markdown](https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/coldleads-mcp-server.md), [page](https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/coldleads-mcp-server)

## Channel facts

- Registry: `npm`
- Package: `@coldleads/mcp-server`
- Version: `1.0.2`
- Transport: `stdio`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically from public evidence about the published package, including repeated runs of it in an isolated sandbox, and we only credit what we can confirm. Scores are 0–100 per category. Scoring method: https://verifymcp.io/docs/scoring (what has changed: https://verifymcp.io/docs/scoring/changelog)

Scored 2026-10-23.

- **Supply Chain Security**: 98/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - 31 of 92 dependencies flagged as unhealthy.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to anttka4cz/mcp-server-coldleads).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 9 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 70/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 755 tokens (~188/item across 4 items; 4 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 30/100
  - Stability observed for 9 of 30 days with no destabilising changes; credit accrues until the full window elapses.
- **Tool Coverage**: 100/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 100% of tool parameters carry a description.
- **Tool Safety**: 100/100
  - No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.
  - We read all 4 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 5 captured unit(s) of tool text and found none that tries to manipulate the model reading it.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### How do I install the Cold Leads MCP server?

Cold Leads runs locally as an npm package, launched with npx -y @coldleads/mcp-server. Ready-made configuration for Claude, Cursor, VS Code, Codex and 5 more is on this page, copied from each client's own documentation.

### Claude

```bash
claude mcp add anttka4cz-mcp-server-coldleads -- npx -y @coldleads/mcp-server
```

### Cursor

```json
{
  "mcpServers": {
    "anttka4cz-mcp-server-coldleads": {
      "command": "npx",
      "args": [
        "-y",
        "@coldleads/mcp-server"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "anttka4cz-mcp-server-coldleads": {
      "command": "npx",
      "args": [
        "-y",
        "@coldleads/mcp-server"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add anttka4cz-mcp-server-coldleads -- npx -y @coldleads/mcp-server
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "anttka4cz-mcp-server-coldleads": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@coldleads/mcp-server"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add anttka4cz-mcp-server-coldleads --command npx --arg -y --arg @coldleads/mcp-server
```

### Hermes

```yaml
mcp_servers:
  anttka4cz-mcp-server-coldleads:
    command: "npx"
    args: ["-y", "@coldleads/mcp-server"]
```

### Netclaw

```json
{
  "McpServers": {
    "anttka4cz-mcp-server-coldleads": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@coldleads/mcp-server"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add anttka4cz-mcp-server-coldleads -t stdio -c npx -a -y @coldleads/mcp-server
```

### Other

```json
{
  "mcpServers": {
    "anttka4cz-mcp-server-coldleads": {
      "command": "npx",
      "args": [
        "-y",
        "@coldleads/mcp-server"
      ]
    }
  }
}
```

## Changelog

Every change recorded for this component, newest first. Days that predate change tracking, or that we cannot explain, say so: "we were watching and nothing happened" and "we were not watching" are different claims.

### 2026-10-23 (score 84, +1)

No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-22 (score 83, +4)

- [functional improvement] Stability: unverified → 0.27

### 2026-10-14 (score 79, +30)

- [security improvement] Injection markers: unverified → pass
- [security] First check of Judged manipulation: pass
- [security] Stability: Stability not yet verified: not enough scan history yet (needs a 30-day window).
- [functional improvement] Tool coverage: unverified → 100
- [functional improvement] MCP protocol: unverified → pass
- [functional] First check of Schema quality: fail
- [functional] First check of Schema quality: excellent
- [functional] First check of Destructive annotations: pass
- [functional] First check of Schema quality: fail
- [functional] First check of Tool coverage: 100

### 2026-10-13 (score 49)

First indexed and scored.

## MCP tools (4)

### `search_leads` (~154 tokens)

Search leads by company domain

Search the leads already in your Cold Leads CRM for a target company domain: contact e-mail, name, company, phone, stage, tags, verification status and a do_not_contact flag. Covers only contacts in your own workspace (Cold Leads has no third-party lead database). Free, uses no credits.

Input parameters:

- `domain` (string, required): Company domain, e.g. example.com. A URL or an e-mail address is reduced to its domain.
- `limit` (integer): Maximum number of leads to return (1–50, default 10).
- `role` (string): Optional keyword such as sales, ceo or marketing, matched against the contact's name, e-mail local part, tags, notes and type.

### `verify_email` (~108 tokens)

Verify an e-mail address

Verifies an e-mail address: syntax, disposable domain, role account and MX records, plus an SMTP mailbox and catch-all check when Cold Leads can open an SMTP connection to the recipient's mail server (otherwise reasons contains smtp_unreachable and catch_all is null). Returns validity (valid, risky or invalid), a score and reason codes. Usually answers within a few seconds; costs 1 credit.

Input parameters:

- `email` (string, required): The e-mail address to verify, e.g. anna@example.com.

### `provision_account_and_get_payment_link` (~200 tokens)

Set up Cold Leads for the human owner

Use only when no working Cold Leads API key is available (other Cold Leads tools return missing_api_key or bad_api_key) and the human wants to use Cold Leads. Creates a pending Cold Leads account for the human owner's e-mail and returns a Stripe payment link for the Business plan with API access (price in plan.price, billed monthly until cancelled). Show checkout_url to the human and let them decide; never open, pay or share the link yourself. Keep claim_token secret, then call check_provisioning_status until status is active to receive the API key once.

Input parameters:

- `agent_id` (string): Name of your agent or product; shown to the human on the payment page.
- `callback_url` (string): Optional https URL that receives a signed POST when the owner has paid (no secrets in the payload).
- `owner_email` (string, required): E-mail address of the human who will own and pay for the Cold Leads account.

### `check_provisioning_status` (~118 tokens)

Check the owner's payment and get the API key

Checks an account created with provision_account_and_get_payment_link. Returns status pending_payment, active, expired or suspended. When active, the first call with the claim_token returns api_key exactly once: store it securely as COLDLEADS_API_KEY and send it as Authorization: Bearer <key>. Poll every 15–30 seconds while pending_payment.

Input parameters:

- `claim_token` (string, required): claim_token returned by provision_account_and_get_payment_link.
- `session_id` (string, required): session_id returned by provision_account_and_get_payment_link.

## Diagnostics

Captured diagnostic sections: Provenance, Dependencies. The full working is on the page: https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/coldleads-mcp-server#diagnostics

## Score history

- 2026-10-23: 84
- 2026-10-22: 83
- 2026-10-21: 79
- 2026-10-20: 79
- 2026-10-19: 79
- 2026-10-18: 79
- 2026-10-17: 79
- 2026-10-16: 79
- 2026-10-15: 79
- 2026-10-14: 79
- 2026-10-13: 49

## Common questions

### What is the Cold Leads MCP server?

Cold Leads is an MCP server listed in the public MCP registry as io.github.anttka4cz/mcp-server-coldleads. B2B outreach CRM for AI agents: contacts, verification, approved campaigns, replies, follow-ups. This page covers its npm package (@coldleads/mcp-server).

### Is the Cold Leads MCP server safe to use?

Cold Leads scores 84 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 23 October 2026. It declares no install or post-install scripts. Its build provenance is signed and verified. That is a record of what we were able to check automatically, not an endorsement. The category breakdown on this page shows every signal behind the number, including the ones we could not confirm.

### What tools does the Cold Leads MCP server expose?

Cold Leads exposes 4 tools: search_leads, verify_email, provision_account_and_get_payment_link, check_provisioning_status. Their descriptions and schemas cost roughly 580 tokens of context every time the server is loaded.

### Is the Cold Leads MCP server still maintained?

Cold Leads is still listed as active in the MCP registry. We last reached this channel on 23 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.

### What licence is the Cold Leads MCP server under?

Cold Leads declares the MIT licence, which is OSI-approved. That covers the source only, and says nothing about the cost of any service it calls.

## Links

- npm package: https://www.npmjs.com/package/@coldleads/mcp-server
- Socket report: https://socket.dev/npm/package/@coldleads/mcp-server
- Repository: https://github.com/anttka4cz/mcp-server-coldleads
- Website: https://coldleads.app/developers?utm_source=mcp-registry&utm_medium=listing&utm_campaign=mcp-server
- Changelog RSS feed: https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/coldleads-mcp-server.xml
- Changelog JSON feed: https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/coldleads-mcp-server.json
- HTML version of this page: https://verifymcp.io/servers/anttka4cz-mcp-server-coldleads/coldleads-mcp-server