# SIC Codes UK (npm · sic-codes-mcp)

UK SIC code lookup, GICS/ICB mapping, and Companies House search. 731 codes, 5.6M companies.

- Trust score: 64/100 (medium)
- Change this week: +24
- Registry status: active
- Liveness: live
- Owner verified: no
- Last scored: 2026-08-03

## Components

- remote · `siccodes.co.uk`: 25/100, [markdown](https://verifymcp.io/servers/jackmmaher-sic-codes/api-mcp.md), [page](https://verifymcp.io/servers/jackmmaher-sic-codes/api-mcp)
- npm · `sic-codes-mcp`: 64/100 (this document), [markdown](https://verifymcp.io/servers/jackmmaher-sic-codes/sic-codes-mcp.md), [page](https://verifymcp.io/servers/jackmmaher-sic-codes/sic-codes-mcp)

## Channel facts

- Registry: `npm`
- Package: `sic-codes-mcp`
- Version: `1.0.0`
- 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 2026-08-03.

- **Supply Chain Security**: 87/100
  - No malware found by supply-chain analysis.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
  - No install/post-install scripts declared.
  - Only part of the dependency tree could be resolved (95 of 99), so this covers what we could see, not the whole tree.
- **Provenance & Transparency**: 19/100
  - Repository check failed: the declared repository URL returned HTTP 404.
  - Provenance check failed: no build-provenance attestation is published.
  - Clear OSI-approved license (MIT).
  - Actively maintained (last published 51 days ago).
  - Security-disclosure policy not yet verified: we couldn't inspect the source repository.
- **Schema Quality & AI Usability**: 74/100
  - AI-judged instruction clarity (excellent).
  - Context-footprint check failed: tool/resource definitions use about 779 tokens (~129/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**: 27/100
  - Stability observed for 8 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.
- **Capabilities**: 100/100
  - Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.

## Install

### Claude

```bash
claude mcp add jackmmaher-sic-codes -- npx -y sic-codes-mcp
```

### Codex

```bash
codex mcp add jackmmaher-sic-codes -- npx -y sic-codes-mcp
```

### opencode

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

### OpenClaw

```bash
openclaw mcp add jackmmaher-sic-codes --command npx --arg -y --arg sic-codes-mcp
```

### Hermes

```yaml
mcp_servers:
  jackmmaher-sic-codes:
    command: "npx"
    args: ["-y", "sic-codes-mcp"]
```

### Other

```json
{
  "mcpServers": {
    "jackmmaher-sic-codes": {
      "command": "npx",
      "args": [
        "-y",
        "sic-codes-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.

### 2026-08-03 (score 64, +1)

No change was recorded against any check on this day. Stability & Change Management went from 23 to 27. That category is still filling its 30-day observation window: 7 days of observed history at the previous scan, 8 at this one. The score rises as the window fills, whether or not the server changes.

### 2026-08-02 (score 63, +63)

- [security regression] Provenance: unverified → fail
- [security improvement] Install scripts: unverified → pass
- [security improvement] Known CVEs: unverified → partial
- [security improvement] Malware scan: unverified → pass
- [functional improvement] Stability: unverified → 0.23
- [functional improvement] Schema quality: unverified → excellent
- [functional improvement] License: unverified → pass
- [functional improvement] Dependency health: unverified → partial
- [functional improvement] MCP protocol: unverified → pass
- [functional improvement] Maintenance: unverified → pass
- [functional improvement] Tool coverage: unverified → 100
- [functional] Licence: MIT

### 2026-08-01 (score 0, −15)

- [functional regression] Tool coverage: 100 → unverified
- [functional] First check of Schema quality: unverified

### 2026-07-31 (score 15, −7)

- [functional] We updated how we score, so this day's move reflects our rubric, not a change to the server

### 2026-07-30 (score 22, −18)

- [security regression] Malware scan: pass → unverified

### 2026-07-27 (score 40)

First indexed and scored.

## MCP tools (6)

### `lookup_sic_code` (~170 tokens)

Look up a classification code in the UK SIC 2007, GICS (MSCI), or ICB (FTSE Russell) system. Returns the code name, hierarchy level, breadcrumb trail from root to code, child codes, and cross-classification mappings to other systems. Use this when you have a specific code and need its details.

Input parameters:

- `code` (string, required): The classification code to look up (e.g. '62020' for SIC, 'J' for SIC section, '45' for GICS sector, '1010' for ICB supersector)
- `system` (string): Which classification system the code belongs to: sic (UK SIC 2007), gics (MSCI Global Industry Classification Standard), or icb (FTSE Russell Industry Classification Benchmark)

### `search_sic_codes` (~118 tokens)

Search for UK SIC 2007 codes by business activity description. Describe what a business does in plain English and get ranked SIC code recommendations with relevance scores, hierarchy breadcrumbs, and GICS/ICB cross-classification mappings. Useful for finding the right SIC code for Companies House registration.

Input parameters:

- `limit` (number): Maximum number of results to return (default 5)
- `query` (string, required): Business activity description in plain English (e.g. 'online candle shop', 'software development', 'plumbing and heating', 'restaurant')

### `convert_between_classifications` (~128 tokens)

Convert a classification code between UK SIC 2007, GICS (MSCI), and ICB (FTSE Russell) systems. Returns equivalent codes in the target system with confidence levels. The mapping covers all 618 SIC classes, 163 GICS sub-industries, and 173 ICB subsectors.

Input parameters:

- `code` (string, required): The classification code to convert (e.g. '6202' for SIC class, '45102030' for GICS sub-industry)
- `from` (string, required): Source classification system
- `to` (string, required): Target classification system

### `browse_classification_hierarchy` (~116 tokens)

Browse the hierarchy tree of a classification system (UK SIC 2007, GICS, or ICB). Returns child entries at the next level. Omit parent_code to get top-level entries. Use this to explore what codes exist in each system.

Input parameters:

- `parent_code` (string): Parent code to get children of. Omit to get top-level entries (SIC sections, GICS sectors, ICB industries).
- `system` (string, required): Classification system to browse: sic, gics, or icb

### `lookup_uk_company` (~109 tokens)

Look up a UK company registered at Companies House by name or registration number. Returns company details including name, status, type, incorporation date, registered address, and SIC codes with their full names and GICS/ICB mappings. Covers 5.6 million UK companies.

Input parameters:

- `company_number` (string): Companies House registration number (e.g. '00445790')
- `query` (string): Company name to search for (e.g. 'Tesco', 'Rolls Royce')

### `search_uk_companies_by_industry` (~138 tokens)

Find UK companies registered under a specific SIC, GICS, or ICB classification code. Returns a list of companies with their details. Useful for market research, finding competitors, or understanding how many companies operate in a given industry.

Input parameters:

- `code` (string, required): Classification code to search by (e.g. '62020' for IT consultancy, '45' for GICS Energy sector)
- `limit` (number): Maximum number of companies to return (default 20)
- `status` (string): Filter by company status (default: active only)
- `system` (string): Classification system the code belongs to

## Diagnostics

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

## Score history

- 2026-08-03: 64
- 2026-08-02: 63
- 2026-08-01: 0
- 2026-07-31: 15
- 2026-07-30: 22
- 2026-07-28: 40
- 2026-07-27: 40

## Links

- npm package: https://www.npmjs.com/package/sic-codes-mcp
- Socket report: https://socket.dev/npm/package/sic-codes-mcp
- Changelog RSS feed: https://verifymcp.io/servers/jackmmaher-sic-codes/sic-codes-mcp/changelog.xml
- Changelog JSON feed: https://verifymcp.io/servers/jackmmaher-sic-codes/sic-codes-mcp/changelog.json
- HTML version of this page: https://verifymcp.io/servers/jackmmaher-sic-codes/sic-codes-mcp