# b2bsearch: B2B contacts and account signals (npm · @b2bsearch/mcp)

B2B contacts and account signals on Apify: new hires, email format, lookalikes, decision makers.

- Trust score: 63/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- mcpb · `b2bsearch-mcp-0.1.3.mcpb`: 46/100, [markdown](https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp.md), [page](https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp)
- npm · `@b2bsearch/mcp`: 63/100 (this document), [markdown](https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp-2.md), [page](https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp-2)

## Channel facts

- Registry: `npm`
- Package: `@b2bsearch/mcp`
- Version: `0.1.3`
- 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 2026-11-05.

- **Supply Chain Security**: 81/100
  - No malware found by supply-chain analysis.
  - CVE check failed: a known high-severity CVE affects zod 4.6.5, a direct dependency. A fixed version is available.
  - No install/post-install scripts declared.
  - 46 of 146 dependencies flagged as unhealthy (1 deprecated).
- **Provenance & Transparency**: 48/100
  - Source repository is publicly reachable at the declared URL.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 4 days ago).
  - Publishes a security disclosure policy (SECURITY.md).
- **Schema Quality & AI Usability**: 65/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1370 tokens (~228/item across 6 items; 6 tools + 0 resources), over budget; trim descriptions and params.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 0/100
  - Stability not yet verified: not enough scan history yet (needs a 30-day window).
- **Tool Coverage**: 97/100
  - 100% of tools have a non-trivial description (not blank, and not just the tool's name).
  - 92% 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 6 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.

**Unverified: 1 category.** A category scored 0 because we could not verify it: a data source with nothing on this package, evidence we could not reach, or a check we could not run. We only credit what we can confirm.

## Install

### How do I install the b2bsearch: B2B contacts and account signals MCP server?

b2bsearch: B2B contacts and account signals runs locally as an npm package, launched with npx -y @b2bsearch/mcp. 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 keyvwin-mcp -- npx -y @b2bsearch/mcp
```

### Cursor

```json
{
  "mcpServers": {
    "keyvwin-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@b2bsearch/mcp"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "keyvwin-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@b2bsearch/mcp"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add keyvwin-mcp -- npx -y @b2bsearch/mcp
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "keyvwin-mcp": {
      "type": "local",
      "command": [
        "npx",
        "-y",
        "@b2bsearch/mcp"
      ],
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add keyvwin-mcp --command npx --arg -y --arg @b2bsearch/mcp
```

### Hermes

```yaml
mcp_servers:
  keyvwin-mcp:
    command: "npx"
    args: ["-y", "@b2bsearch/mcp"]
```

### Netclaw

```json
{
  "McpServers": {
    "keyvwin-mcp": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@b2bsearch/mcp"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add keyvwin-mcp -t stdio -c npx -a -y @b2bsearch/mcp
```

### Other

```json
{
  "mcpServers": {
    "keyvwin-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "@b2bsearch/mcp"
      ]
    }
  }
}
```

## 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.

### 2026-10-31 (score 63)

First indexed and scored.

## MCP tools (6)

### `find_new_hires` (~279 tokens)

New hires at a company, with their previous employer

Who recently joined the given companies: name, new title, start month, seniority, LinkedIn URL and the employer and title they came from. Use for job-change and hiring signals on an account list. Pay per new hire delivered ($3.20 per 1,000); companies with nobody new are free. Not for people who left (use former employees) and not for job postings.

Input parameters:

- `companyDomains` (array, required): Companies to check, as website domains (acme.com); full URLs are reduced to the domain
- `countries` (array): Two-letter country codes (us, de, gb)
- `jobTitles` (array): Keep only titles containing any of these words
- `maxChargeUsd` (number): Maximum spend for this call in USD (default 5); the run stops at the cap and rows already delivered are the only ones charged
- `maxPerCompany` (integer): At most this many people per company (default 50)
- `maxResults` (integer): Run-wide cap (default 200)
- `seniority` (array): Seniority buckets to keep
- `since` (string): Exact start month or date (YYYY-MM or YYYY-MM-DD); wins over sinceMonths
- `sinceMonths` (integer): How far back a start date counts as new (default 6)

### `company_email_format` (~167 tokens)

Work email format of a company

How a company writes work email addresses (first.last@, flast@, first@), derived from addresses on record for its current staff: pattern, confirmations, agreement, coverage, other patterns, masked samples. No address is returned. Use before guessing an address from a name. $0.02 per domain with a confirmed pattern; weak, unknown and shared-hosting domains are free.

Input parameters:

- `domains` (array, required): Companies to check, as website domains (acme.com); full URLs are reduced to the domain
- `maxChargeUsd` (number): Maximum spend for this call in USD (default 5); the run stops at the cap and rows already delivered are the only ones charged
- `sampleLimit` (integer): Current employees read for evidence (default 200)

### `find_lookalike_companies` (~238 tokens)

Companies similar to example companies

Similar companies for each seed domain: same industry, same country and similar headcount by default, each with name, domain, LinkedIn page, industry, headcount, HQ, founding year, last funding round and an explicit matchedOn string. Use to expand best customers into target accounts. $0.0015 per company delivered; the seed, duplicates and unresolved seeds are free. Not for company search by filters without a seed.

Input parameters:

- `countries` (array): Look in these countries instead of the seed country
- `maxChargeUsd` (number): Maximum spend for this call in USD (default 5); the run stops at the cap and rows already delivered are the only ones charged
- `maxPerSeed` (integer): Lookalikes per seed (default 25); the spend cap
- `sameCountry` (boolean): Lookalikes headquartered in the seed country (default true)
- `sameSize` (boolean): Between half and twice the seed headcount (default true)
- `seedDomains` (array, required): Example companies, as website domains (acme.com); full URLs are reduced to the domain

### `find_decision_makers` (~206 tokens)

Decision makers at company domains

Founders, C-level, VPs and directors at the given companies: name, title, seniority, LinkedIn URL and whether a work email is on record. Use after you have target domains. $3.20 per 1,000 people; companies with nobody matching are free. Emails are not included: pass linkedinUrl values to find_email_by_linkedin_url for the people you choose.

Input parameters:

- `domains` (array, required): Companies to look up, as website domains (acme.com); full URLs are reduced to the domain
- `maxChargeUsd` (number): Maximum spend for this call in USD (default 5); the run stops at the cap and rows already delivered are the only ones charged
- `maxPerCompany` (integer): At most this many people per company (default 10)
- `roles` (array): Roles to keep (default: all four)
- `titleKeywords` (array): Keep only titles containing any of these words

### `find_email_by_linkedin_url` (~163 tokens)

Email addresses for LinkedIn profile URLs

The email address on record for each LinkedIn profile URL or handle: best address, its type (work or personal), all work addresses, plus name, title and employer. Addresses are read from a database, not guessed and not scraped. $8 per 1,000 profiles with an address; profiles without one are free. Use for a list the user already has; for people search by criteria use search_people.

Input parameters:

- `includePersonalEmails` (boolean): Also return personal addresses (default false)
- `maxChargeUsd` (number): Maximum spend for this call in USD (default 5); the run stops at the cap and rows already delivered are the only ones charged
- `profileUrls` (array, required): LinkedIn profile URLs or bare handles

### `search_people` (~317 tokens)

People by job title, seniority, country, employer

Find people matching an ideal customer profile. mode "count" returns the number of matches for free; "market" adds a free breakdown by country, seniority, employer size, industry and title; "people" returns rows at $0.95 per 1,000 (name, title, seniority, employer, location, LinkedIn URL, email flags). Always count first, then ask the user before switching to "people". No live LinkedIn pages are read.

Input parameters:

- `companyDomains` (array): Current employer website domains
- `countries` (array): Two-letter country codes (us, de, gb)
- `currentRoleStartedAfterDate` (string): Job changers: current role started after this month
- `employeeCountMax` (integer)
- `employeeCountMin` (integer)
- `employerIndustries` (array): Industry names of the current employer (Software Development, Financial Services)
- `maxChargeUsd` (number): Maximum spend for this call in USD (default 5); the run stops at the cap and rows already delivered are the only ones charged
- `maxPerCompany` (integer)
- `maxResults` (integer): Rows cap in people mode (default 500)
- `mode` (string, required): count and market are free; people is paid per row
- `pastEmployerDomains` (array): People who used to work at these companies
- `seniority` (array): Seniority buckets to keep
- `titleKeywords` (array): Words in the current job title

## Diagnostics

Captured diagnostic sections: Provenance, Vulnerabilities, Dependencies. The full working is on the page: https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp-2#diagnostics

## Score history

- 2026-11-05: 63
- 2026-11-04: 63
- 2026-11-03: 63
- 2026-11-02: 63
- 2026-11-01: 63
- 2026-10-31: 63

## Common questions

### What is the b2bsearch: B2B contacts and account signals MCP server?

b2bsearch: B2B contacts and account signals is an MCP server listed in the public MCP registry as io.github.keyvwin/mcp. B2B contacts and account signals on Apify: new hires, email format, lookalikes, decision makers. This page covers its npm package (@b2bsearch/mcp).

### Is the b2bsearch: B2B contacts and account signals MCP server safe to use?

b2bsearch: B2B contacts and account signals scores 63 out of 100 on VerifyMCP. We recorded 2 known advisories against it as of 5 November 2026. It declares no install or post-install scripts. 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 b2bsearch: B2B contacts and account signals MCP server expose?

b2bsearch: B2B contacts and account signals exposes 6 tools: find_new_hires, company_email_format, find_lookalike_companies, find_decision_makers, find_email_by_linkedin_url, search_people. Their descriptions and schemas cost roughly 1,370 tokens of context every time the server is loaded.

### Is the b2bsearch: B2B contacts and account signals MCP server still maintained?

b2bsearch: B2B contacts and account signals is still listed as active in the MCP registry. We last reached this channel on 5 November 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 b2bsearch: B2B contacts and account signals MCP server under?

b2bsearch: B2B contacts and account signals 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/@b2bsearch/mcp
- Socket report: https://socket.dev/npm/package/@b2bsearch/mcp
- Repository: https://github.com/keyvwin/mcp
- Changelog RSS feed: https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp-2.xml
- Changelog JSON feed: https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp-2.json
- HTML version of this page: https://verifymcp.io/servers/keyvwin-mcp/b2bsearch-mcp-2