# Companies House (npm · @pipeworx/mcp-companies-house)

Companies House MCP — UK statutory company registry (BYO key)

- Trust score: 83/100 (high trust)
- Change this week: +4
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `gateway.pipeworx.io`: 69/100, [markdown](https://verifymcp.io/servers/pipeworx-io-companies-house/companies-house-mcp.md), [page](https://verifymcp.io/servers/pipeworx-io-companies-house/companies-house-mcp)
- npm · `@pipeworx/mcp-companies-house`: 83/100 (this document), [markdown](https://verifymcp.io/servers/pipeworx-io-companies-house/pipeworx-mcp-companies-house.md), [page](https://verifymcp.io/servers/pipeworx-io-companies-house/pipeworx-mcp-companies-house)

## Channel facts

- Registry: `npm`
- Package: `@pipeworx/mcp-companies-house`
- Version: `0.2.1`
- 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**: 100/100
  - No malware found by supply-chain analysis.
  - No known CVEs affecting this package version or its production dependencies.
  - No install/post-install scripts declared.
  - No production dependencies, so there is no dependency health to assess.
- **Provenance & Transparency**: 97/100
  - Source repository is publicly reachable at the declared URL.
  - Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-companies-house).
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 4 days ago).
  - Disclosure check failed: no security disclosure policy was found in the source repository.
- **Schema Quality & AI Usability**: 67/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 1154 tokens (~192/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**: 23/100
  - Stability observed for 7 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 6 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 7 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 Companies House MCP server?

Companies House runs locally as an npm package, launched with npx -y @pipeworx/mcp-companies-house. 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 pipeworx-io-companies-house -- npx -y @pipeworx/mcp-companies-house
```

### Cursor

```json
{
  "mcpServers": {
    "pipeworx-io-companies-house": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-companies-house"
      ]
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "pipeworx-io-companies-house": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-companies-house"
      ]
    }
  }
}
```

### Codex

```bash
codex mcp add pipeworx-io-companies-house -- npx -y @pipeworx/mcp-companies-house
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add pipeworx-io-companies-house --command npx --arg -y --arg @pipeworx/mcp-companies-house
```

### Hermes

```yaml
mcp_servers:
  pipeworx-io-companies-house:
    command: "npx"
    args: ["-y", "@pipeworx/mcp-companies-house"]
```

### Netclaw

```json
{
  "McpServers": {
    "pipeworx-io-companies-house": {
      "Transport": "stdio",
      "Command": "npx",
      "Arguments": [
        "-y",
        "@pipeworx/mcp-companies-house"
      ]
    }
  }
}
```

### Vellum

```bash
assistant mcp add pipeworx-io-companies-house -t stdio -c npx -a -y @pipeworx/mcp-companies-house
```

### Other

```json
{
  "mcpServers": {
    "pipeworx-io-companies-house": {
      "command": "npx",
      "args": [
        "-y",
        "@pipeworx/mcp-companies-house"
      ]
    }
  }
}
```

## 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.

### 2026-11-05 (score 83, +1)

No change was recorded against any check on this day. Stability & Change Management went from 20 to 23. That category is still filling its 30-day observation window: 6 days of observed history at the previous scan, 7 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-03 (score 82, +1)

No change was recorded against any check on this day. Stability & Change Management went from 13 to 17. That category is still filling its 30-day observation window: 4 days of observed history at the previous scan, 5 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-11-01 (score 81, +1)

No change was recorded against any check on this day. Stability & Change Management went from 7 to 10. That category is still filling its 30-day observation window: 2 days of observed history at the previous scan, 3 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-10-31 (score 80, 0)

- [functional] Package version: 0.2.0 → 0.2.1

### 2026-10-30 (score 80, +1)

- [functional regression] Security disclosure: unverified → fail

### 2026-10-29 (score 79)

First indexed and scored.

## MCP tools (6)

### `search_companies` (~101 tokens)

Search UK Companies House by company name. Returns matches with company number, name, status (active/dissolved), type, registered office address, and incorporation date. Use the company_number to look up officers, filings, and PSCs.

Input parameters:

- `items_per_page` (number): 1-100 (default 20)
- `query` (string, required): Company name (full or partial)
- `start_index` (number): Pagination offset (default 0)

### `get_company` (~72 tokens)

Fetch a single UK company profile by company number. Returns registered name, status, type, SIC codes, registered office, accounts/confirmation-statement due dates, and links to officers/filings/charges/PSCs.

Input parameters:

- `company_number` (string, required): UK company number (e.g., "00006245")

### `get_officers` (~206 tokens)

List directors, secretaries, or LLP members for a UK company by company_number (from search_companies). Returns each officer's name, role, appointment/resignation dates, occupation, nationality, country of residence, and date of birth (month/year). Supports register_type filter (directors | secretaries | llp-members) and pagination.

Input parameters:

- `company_number` (string, required): UK company number (e.g. "07098618") OR the company NAME (e.g. "Ocado Group") — a name is resolved here automatically and the match is echoed back as resolved_from_name. Pass whichever you have; do no…
- `items_per_page` (number): 1-100 (default 35)
- `register_type` (string): directors | secretaries | llp-members (optional restriction)
- `start_index` (number): Pagination offset (default 0)

### `get_filings` (~211 tokens)

Retrieve filing history for a UK company by company_number (from search_companies). Returns up to 25 filings per page — each with category, type, description, filing date, action date, transaction ID, page count, and document metadata URL. Filter by category (accounts | confirmation-statement | officers | etc.).

Input parameters:

- `category` (string): Optional filter (accounts | confirmation-statement | officers | etc.)
- `company_number` (string, required): UK company number (e.g. "07098618") OR the company NAME (e.g. "Ocado Group") — a name is resolved here automatically and the match is echoed back as resolved_from_name. Pass whichever you have; do no…
- `items_per_page` (number): 1-100 (default 25)
- `start_index` (number): Pagination offset (default 0)

### `get_persons_with_significant_control` (~203 tokens)

Retrieve PSC (beneficial owner) records for a UK company by company_number (from search_companies). Returns each PSC's name, kind (individual-person / corporate-entity / legal-person), natures of control (e.g. ownership-of-shares-75-to-100-percent), country of residence, nationality, notification date, and ceased date.

Input parameters:

- `company_number` (string, required): UK company number (e.g. "07098618") OR the company NAME (e.g. "Ocado Group") — a name is resolved here automatically and the match is echoed back as resolved_from_name. Pass whichever you have; do no…
- `items_per_page` (number): 1-100 (default 25)
- `start_index` (number): Pagination offset (default 0)

### `get_charges` (~308 tokens)

Retrieve the charges register for a UK company by company_number (from search_companies) OR company NAME — secured lending (mortgages, debentures, fixed/floating charges) registered against the company, the UK analogue of a US UCC lien filing. Returns each charge's charge_number, classification/description, status (outstanding | satisfied | part-satisfied | fully-satisfied), created_on/delivered_on/satisfied_on dates, particulars (fixed/floating/negative-pledge flags and amount secured where stated), and persons_entitled (the lender(s) secured by the charge). A company with no secured lending on file returns zero charges, which reads differently from a company_number that does not exist — this call disambiguates between the two the same way get_filings does. Counts (total/outstanding/satisfied/part-satisfied) are returned ahead of the charge list.

Input parameters:

- `company_number` (string, required): UK company number (e.g. "07098618") OR the company NAME (e.g. "Ocado Group") — a name is resolved here automatically and the match is echoed back as resolved_from_name. Pass whichever you have; do no…
- `items_per_page` (number): 1-100 (default 25)
- `start_index` (number): Pagination offset (default 0)

## Diagnostics

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

## Score history

- 2026-11-05: 83
- 2026-11-04: 82
- 2026-11-03: 82
- 2026-11-02: 81
- 2026-11-01: 81
- 2026-10-31: 80
- 2026-10-30: 80
- 2026-10-29: 79

## Common questions

### What is the Companies House MCP server?

Companies House is an MCP server listed in the public MCP registry as io.github.pipeworx-io/companies-house. Companies House MCP, UK statutory company registry (BYO key). This page covers its npm package (@pipeworx/mcp-companies-house).

### Is the Companies House MCP server safe to use?

Companies House scores 83 out of 100 on VerifyMCP. We found no known CVEs affecting it as of 5 November 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 Companies House MCP server expose?

Companies House exposes 6 tools: search_companies, get_company, get_officers, get_filings, get_persons_with_significant_control, get_charges. Their descriptions and schemas cost roughly 1,101 tokens of context every time the server is loaded.

### Is the Companies House MCP server still maintained?

Companies House 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 Companies House MCP server under?

Companies House 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/@pipeworx/mcp-companies-house
- Socket report: https://socket.dev/npm/package/@pipeworx/mcp-companies-house
- Repository: https://github.com/pipeworx-io/mcp-companies-house
- Website: https://pipeworx.io/packs/companies-house
- Changelog RSS feed: https://verifymcp.io/servers/pipeworx-io-companies-house/pipeworx-mcp-companies-house.xml
- Changelog JSON feed: https://verifymcp.io/servers/pipeworx-io-companies-house/pipeworx-mcp-companies-house.json
- HTML version of this page: https://verifymcp.io/servers/pipeworx-io-companies-house/pipeworx-mcp-companies-house