# UK Data: UK Companies House (remote · ukdata.reliness.co.uk)

UK Companies House: company search, profiles, officers, owners (PSC), filings, new incorporations

- Trust score: 70/100 (medium)
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-11-05

## Components

- remote · `ukdata.reliness.co.uk`: 70/100 (this document), [markdown](https://verifymcp.io/servers/uk-co-reliness-uk-companies/mcp-uk-companies.md), [page](https://verifymcp.io/servers/uk-co-reliness-uk-companies/mcp-uk-companies)

## Channel facts

- Endpoint: `https://ukdata.reliness.co.uk/mcp/uk-companies`
- Transports: `streamable-http`
- Auth: `none`
- Version: `1.4.0`

## Trust breakdown

How this component scores in each security and reliability category. Every signal is checked automatically against the live server, 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.

- **Endpoint Security**: 69/100
  - The endpoint's TLS certificate is valid, in date, and uses a strong key.
  - No authorisation is required to call this server. Every tool declares its destructiveHint and none is destructive, so open access doesn't expose one.
  - HTTPS check failed: the endpoint is reachable over plaintext HTTP.
  - The HSTS (Strict-Transport-Security) header is present.
  - DNSSEC check failed: this domain isn't protected by DNSSEC.
- **Transport & Reachability**: 100/100
  - Verified streamable-http transport via a live MCP handshake.
- **Schema Quality & AI Usability**: 75/100
  - AI-judged instruction clarity (good).
  - Tool/resource definitions use about 781 tokens (~71/item across 11 items; 11 tools + 0 resources), lean.
  - Usage-examples check failed: none of the tools include examples.
- **Stability & Change Management**: 3/100
  - Stability observed for 1 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 11 captured tool definition(s), and no name or description among them implies an irreversible operation.
  - An AI judge read all 11 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 UK Data: UK Companies House MCP server?

UK Data: UK Companies House is a hosted endpoint at https://ukdata.reliness.co.uk/mcp/uk-companies, so there is nothing to install locally. 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 --transport http uk-co-reliness-uk-companies 'https://ukdata.reliness.co.uk/mcp/uk-companies'
```

### Cursor

```json
{
  "mcpServers": {
    "uk-co-reliness-uk-companies": {
      "url": "https://ukdata.reliness.co.uk/mcp/uk-companies"
    }
  }
}
```

### VS Code

```json
{
  "servers": {
    "uk-co-reliness-uk-companies": {
      "type": "http",
      "url": "https://ukdata.reliness.co.uk/mcp/uk-companies"
    }
  }
}
```

### Codex

```toml
[mcp_servers.uk-co-reliness-uk-companies]
url = "https://ukdata.reliness.co.uk/mcp/uk-companies"
```

### opencode

```json
{
  "$schema": "https://opencode.ai/config.json",
  "mcp": {
    "uk-co-reliness-uk-companies": {
      "type": "remote",
      "url": "https://ukdata.reliness.co.uk/mcp/uk-companies",
      "enabled": true
    }
  }
}
```

### OpenClaw

```bash
openclaw mcp add uk-co-reliness-uk-companies --url 'https://ukdata.reliness.co.uk/mcp/uk-companies' --transport streamable-http
```

### Hermes

```yaml
mcp_servers:
  uk-co-reliness-uk-companies:
    url: "https://ukdata.reliness.co.uk/mcp/uk-companies"
```

### Netclaw

```json
{
  "McpServers": {
    "uk-co-reliness-uk-companies": {
      "Transport": "http",
      "Url": "https://ukdata.reliness.co.uk/mcp/uk-companies"
    }
  }
}
```

### Vellum

```bash
assistant mcp add uk-co-reliness-uk-companies -t streamable-http -u 'https://ukdata.reliness.co.uk/mcp/uk-companies'
```

### Other

```json
{
  "mcpServers": {
    "uk-co-reliness-uk-companies": {
      "type": "http",
      "url": "https://ukdata.reliness.co.uk/mcp/uk-companies"
    }
  }
}
```

The mcpServers block is a cross-client convention. Remote transports vary, so check your client's docs.

## 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 70, +11)

- [security improvement] Authorization: unverified → partial
- [security improvement] HSTS header: fail → pass
- [functional regression] Schema quality: 63 → 71
- [functional improvement] Stability: unverified → 0.03
- [functional] New tool “company_charges”
- [functional] New tool “company_insolvency”
- [functional] New tool “disqualified_officers”
- [functional] New tool “kyb_check”
- [functional] New tool “officer_appointments”

### 2026-11-04 (score 59)

First indexed and scored.

## MCP tools (11)

### `company_search` (~57 tokens)

Search Companies House by name. Returns company number, status, type, incorporation date, address. (cost: 1 credit)

Input parameters:

- `limit` (number|string): number 1-100
- `query` (string): string, required

### `company_profile` (~59 tokens)

Full Companies House profile for a company number: status, SIC codes, registered office, accounts and confirmation statement due dates and overdue flags, charges and insolvency flags. (cost: 1 credit)

Input parameters:

- `companyNumber` (string): string, required

### `company_officers` (~55 tokens)

Directors and secretaries for a company number, with appointment and resignation dates. (cost: 1 credit)

Input parameters:

- `activeOnly` (boolean|string): boolean, default true
- `companyNumber` (string): string, required

### `company_pscs` (~41 tokens)

Persons with significant control (beneficial owners) for a company number. (cost: 1 credit)

Input parameters:

- `companyNumber` (string): string, required

### `company_filings` (~57 tokens)

Filing history for a company number (accounts, confirmation statements, officer changes, charges). (cost: 1 credit)

Input parameters:

- `companyNumber` (string): string, required
- `limit` (number|string): number 1-100

### `companies_incorporated` (~113 tokens)

Find companies by incorporation date range, SIC codes, status, location or name fragment (Companies House advanced search). New-business lead lists. (cost: 2 credits)

Input parameters:

- `from` (string): YYYY-MM-DD
- `limit` (number|string): number 1-100
- `location` (string): string
- `nameIncludes` (string): string
- `sicCodes`: array of strings
- `status`: array, default ["active"]
- `to` (string): YYYY-MM-DD

### `officer_appointments` (~87 tokens)

All directorships a person holds or has held across UK companies (Companies House appointments). Find every company a director is tied to, for due diligence and conflict checks. Pass a name or an officerId. (cost: 1 credit)

Input parameters:

- `name` (string): string: officer name to search
- `officerId` (string): string: Companies House officer id if known

### `disqualified_officers` (~73 tokens)

Search the UK register of disqualified company directors by name. Check whether a person has been banned from running a company, for KYB, onboarding and fraud screening. (cost: 1 credit)

Input parameters:

- `limit` (number|string): number 1-100
- `name` (string): string, required

### `company_charges` (~63 tokens)

Registered charges and mortgages (secured debt) against a UK company number: status, amounts, who the debt is owed to. For credit, lending and due-diligence checks. (cost: 1 credit)

Input parameters:

- `companyNumber` (string): string, required

### `company_insolvency` (~58 tokens)

Insolvency cases for a UK company number from Companies House: liquidation, administration, receivership, with dates and the insolvency practitioners handling it. (cost: 1 credit)

Input parameters:

- `companyNumber` (string): string, required

### `kyb_check` (~118 tokens)

Full KYB (know your business) check on a UK company number in one call: profile and status, officers, owners (PSCs), overdue filings, registered charges, insolvency, a disqualified-director screen on the board, and Gazette notices, with a risk summary. For supplier onboarding, due diligence and anti-fraud. (cost: 6 credits)

Input parameters:

- `companyNumber` (string): string, required
- `screenDirectors` (boolean|string): boolean, default true: also screen directors against the disqualified register

## Diagnostics

Captured diagnostic sections: TLS, DNSSEC, Authorisation, Transports. The full working is on the page: https://verifymcp.io/servers/uk-co-reliness-uk-companies/mcp-uk-companies#diagnostics

## Score history

- 2026-11-05: 70
- 2026-11-04: 59

## Common questions

### What is the UK Data: UK Companies House MCP server?

UK Data: UK Companies House is an MCP server listed in the public MCP registry as uk.co.reliness/uk-companies. UK Companies House: company search, profiles, officers, owners (PSC), filings, new incorporations. This page covers its hosted endpoint (https://ukdata.reliness.co.uk/mcp/uk-companies).

### Is the UK Data: UK Companies House MCP server safe to use?

UK Data: UK Companies House scores 70 out of 100 on VerifyMCP. 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 UK Data: UK Companies House MCP server expose?

UK Data: UK Companies House exposes 11 tools: company_search, company_profile, company_officers, company_pscs, company_filings, and 6 more. Their descriptions and schemas cost roughly 781 tokens of context every time the server is loaded.

### Does the UK Data: UK Companies House MCP server require authentication?

No. We connected to UK Data: UK Companies House without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

### Is the UK Data: UK Companies House MCP server still maintained?

UK Data: UK 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.

## Links

- Remote endpoint: https://ukdata.reliness.co.uk/mcp/uk-companies
- Website: https://ukdata.reliness.co.uk/
- Changelog RSS feed: https://verifymcp.io/servers/uk-co-reliness-uk-companies/mcp-uk-companies.xml
- Changelog JSON feed: https://verifymcp.io/servers/uk-co-reliness-uk-companies/mcp-uk-companies.json
- HTML version of this page: https://verifymcp.io/servers/uk-co-reliness-uk-companies/mcp-uk-companies