Companies House
NPM · @PIPEWORX/MCP-COMPANIES-HOUSE · 2 COMPONENTS
Companies House MCP — UK statutory company registry (BYO key)
Available components
Last scanned (7 hours ago)
Scores higher than 76% of npm servers
Category Finance and Payments
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. How we score → Why this is hard to score →
Supply Chain Security100
- No malware found by supply-chain analysis.Pass
- No known CVEs affecting this package version or its production dependencies.Pass
- No install/post-install scripts declared.Pass
- No production dependencies, so there is no dependency health to assess. View diagnostics → Pass
Provenance & Transparency97
- Source repository is publicly reachable at the declared URL. View diagnostics → Pass
- Cryptographically verified build provenance (signed, bound to pipeworx-io/mcp-companies-house). View diagnostics → Pass
- Clear OSI-approved license (MIT).Pass
- Actively maintained (last published 4 days ago).Pass
- Disclosure check failed: no security disclosure policy was found in the source repository. See how to fix → Fail
Schema Quality & AI Usability67
- AI-judged instruction clarity (excellent).Pass
- 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. See how to fix → Fail
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management23
- Stability observed for 7 of 30 days with no destabilising changes; credit accrues until the full window elapses.Partial
Tool Coverage100
- 100% of tools have a non-trivial description (not blank, and not just the tool's name).Pass
- 100% of tool parameters carry a description.Pass
Tool Safety100
- No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
- We read all 6 captured tool definition(s), and no name or description among them implies an irreversible operation.Pass
- An AI judge read all 7 captured unit(s) of tool text and found none that tries to manipulate the model reading it.Pass
Capabilities100
- Implements a supported MCP spec version (2025-11-25); the latest is 2026-07-28.Pass
Every change we have recorded for this component, newest first. Security-relevant changes are always shown. ▲ marks a change for the better, ▼ a change for the worse; unmarked changes are neutral.
- 5 Nov 26 +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.
- 3 Nov 26 +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.
- 1 Nov 26 +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.
- 31 Oct 26 0
- Package version: 0.2.0 → 0.2.1 functional
- 30 Oct 26 +1
- Security disclosure: unverified → fail ▼ functional
- 29 Oct 26 79
First indexed and scored.
Diagnostic detail from the automated scan of this channel: what the scanner observed at each step, so you can see exactly where a check passed or failed. It is informational only and never changes the trust score.
Captured 5 Nov 2026 · Analysed npm/@pipeworx/mcp-companies-house@0.2.1
Provenance Verified
A signed build attestation was found and verified, binding this exact artifact to the source repository it claims to come from.
| Result | Verified |
|---|---|
| Ecosystem | npm |
| Reason | Verified |
| Discovered via | Registry attestation endpoint |
| Source repo | pipeworx-io/mcp-companies-house |
| Certificate issuer | https://token.actions.githubusercontent.com |
| Certificate SAN | https://github.com/pipeworx-io/mcp-companies-house/.github/workflows/publish.yml@refs/heads/main |
| Rekor log index | 3612201583 |
| Predicate type | SLSA build provenance https://slsa.dev/provenance/v1 |
| Subject digest | sha512:88cc4525f2bb36e774ab44dc37553ccb74831afdb78e28a17991d3cb896fe3c15f2f7a46bbe0eafdd4e0d45df433e64fdc492a1086476f81c5e026d06 |
Background: How many MCP packages publish verified provenance →
Dependencies 0 packages
| Packages resolved | 0 |
|---|---|
| Tree resolution | Complete |
Background: SBOMs and build attestations, explained →
The tools this component advertises to a client, with an estimated token cost for each. Expand a tool to see its parameters and schema. The per-tool counts are indicative and are not scored directly; the schema's total context footprint is one signal in Schema Quality & AI Usability. A tool's description is untrusted text the model reads on every call, which is what makes this list a security surface and not just an inventory: how tool poisoning works →
get_charges ~308
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.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | 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) |
No output schema declared.
No examples provided.
get_company ~72
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.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | UK company number (e.g., "00006245") |
No output schema declared.
No examples provided.
get_filings ~211
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.).
| Name | Type | Req | Description |
|---|---|---|---|
| category | string | – | Optional filter (accounts | confirmation-statement | officers | etc.) |
| company_number | string | yes | 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) |
No output schema declared.
No examples provided.
get_officers ~206
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.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | 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) |
No output schema declared.
No examples provided.
get_persons_with_significant_control ~203
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.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | 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) |
No output schema declared.
No examples provided.
search_companies ~101
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.
| Name | Type | Req | Description |
|---|---|---|---|
| items_per_page | number | – | 1-100 (default 20) |
| query | string | yes | Company name (full or partial) |
| start_index | number | – | Pagination offset (default 0) |
No output schema declared.
No examples provided.
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.
npm · @pipeworx/mcp-companies-house
claude mcp add pipeworx-io-companies-house -- npx -y @pipeworx/mcp-companies-house
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.