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UK company & compliance data

REMOTE · FOURZEROTWO.SI

Companies House, Gazette notices, sanctions screening, LEIs and UK legislation.

Available components

+3 this week 77 Trust /100

Last scanned (2 hours ago)

Scores higher than 73% of remote servers

Reachable. Last reached 25 Oct 2026.

Category Finance and Payments

Trust breakdown (7 categories)

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. How we score → Why this is hard to score →

Endpoint Security80
Transport & Reachability100
Schema Quality & AI Usability72
  • AI-judged instruction clarity (good).Pass
  • Tool/resource definitions use about 4771 tokens (~82/item across 58 items; 58 tools + 0 resources), lean.Pass
  • Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management43
  • Stability observed for 13 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
  • Structured output schemas are declared (100% of tools); any adoption earns full credit.Pass
Tool Safety75
  • No prompt-injection markers were found in the server instructions, tool names or descriptions we captured.Pass
  • 0 of 1 tool(s) whose name or description implies an irreversible operation declare an MCP destructiveHint annotation; "uk-disputes__consumer-charge" implies "charge" and declares readOnlyHint instead, contradicting what its own name says it does. See how to fix → Fail
  • An AI judge read all 59 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
Changelog

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.

  • 23 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 33 to 37. That category is still filling its 30-day observation window: 10 days of observed history at the previous scan, 11 at this one. The score rises as the window fills, whether or not the server changes.

  • 21 Oct 26 +1

    No change was recorded against any check on this day. Stability & Change Management went from 27 to 30. That category is still filling its 30-day observation window: 8 days of observed history at the previous scan, 9 at this one. The score rises as the window fills, whether or not the server changes.

  • 19 Oct 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.

  • 17 Oct 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.

  • 15 Oct 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.

  • 13 Oct 26 +1
    • Stability: unverified → 0.03 ▲ functional
  • 12 Oct 26 71

    First indexed and scored.

Diagnostics

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 25 Oct 2026 · Probed https://fourzerotwo.si/mcp/v/uk-business

TLS valid

Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .

Subject Issuer Valid from Valid until Key Signature Serial
CN=fourzerotwo.si CN=WE1,O=Google Trust Services,C=US 10 Oct 2026 8 Jan 2027 ECDSA 256 ECDSA-SHA256 7083f50b7ee269bb0ef93ba441295bdf
SANs: fourzerotwo.si
CN=WE1,O=Google Trust Services,C=US (CA) CN=GTS Root R4,O=Google Trust Services LLC,C=US 13 Dec 2023 20 Feb 2029 ECDSA 256 ECDSA-SHA384 7ff31977972c224a76155d13b6d685e3
CN=GTS Root R4,O=Google Trust Services LLC,C=US (CA) CN=GlobalSign Root CA,OU=Root CA,O=GlobalSign nv-sa,C=BE 15 Nov 2023 28 Jan 2028 ECDSA 384 SHA256-RSA 7fe530bf331343bedd821610493d8a1b

Background: What to check on a remote MCP endpoint →

DNSSEC insecure

Validation of fourzerotwo.si. — Not signed

Zone DS Keys Algorithms Outcome
. trust_anchor 20326, 38696 8, 8 Verified
si. present 42378 13 Verified
fourzerotwo.si. absent Unsigned (proven) parent-signed NSEC/NSEC3 proves an unsigned delegation
Authentication No authorisation required

The endpoint answered without asking for a token. Anyone who knows the URL can reach it.

Result No authorisation required
HTTP status 200
Header Value
strict-transport-security max-age=31536000; includeSubDomains
x-content-type-options nosniff
x-frame-options deny

Background: How OAuth 2.1 works in the 2026 MCP spec →

Transports 2 probes
Transport URL Outcome Status Location
streamable-http https://fourzerotwo.si/mcp/v/uk-business Verified 200
http (plaintext) http://fourzerotwo.si/mcp/v/uk-business HTTPS enforced 301 https://fourzerotwo.si/mcp/v/uk-business
MCP tools · 58 exposed · ~4,700 tokens

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 →

Tool Tokens
companies-house__advanced-search ~116

Filter companies by name, status, SIC code, location and incorporation dates. A few free samples a day, then $0.005 USDC per call via x402.

NameTypeReqDescription
company_name_includesstring–Name contains
company_statusstring–active, dissolved, liquidation…
incorporated_fromstring–YYYY-MM-DD
incorporated_tostring–YYYY-MM-DD
locationstring–Town, county or postcode area
sic_codesstring–SIC code

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__alphabetical-search ~55

Companies listed alphabetically around a name — good for name-availability checks. A few free samples a day, then $0.003 USDC per call via x402.

NameTypeReqDescription
qstringyesName

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__charges ~65

Mortgages and charges registered against a company, with lenders and status. A few free samples a day, then $0.008 USDC per call via x402.

NameTypeReqDescription
company_numberstringyes8-character company number, e.g. "00445790"

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__dissolved-search ~49

Search dissolved and removed companies by name. A few free samples a day, then $0.003 USDC per call via x402.

NameTypeReqDescription
qstringyesName

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__exemptions ~49

PSC disclosure exemptions a company holds. A few free samples a day, then $0.002 USDC per call via x402.

NameTypeReqDescription
company_numberstringyesCompany number

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__filing ~73

One filing's detail and document link. A few free samples a day, then $0.003 USDC per call via x402.

NameTypeReqDescription
company_numberstringyes8-character company number, e.g. "00445790"
transaction_idstringyesTransaction id from filing history

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__filing-history ~84

Accounts, confirmation statements, appointments and other filings, newest first. A few free samples a day, then $0.005 USDC per call via x402.

NameTypeReqDescription
categorystring–accounts, confirmation-statement, officers, capital, mortgage…
company_numberstringyes8-character company number, e.g. "00445790"

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__insolvency ~55

Insolvency cases, practitioners and key dates for a company. A few free samples a day, then $0.008 USDC per call via x402.

NameTypeReqDescription
company_numberstringyesCompany number

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__profile ~71

Status, type, incorporation date, SIC codes, accounts and confirmation statement due dates, registered office. A few free samples a day, then $0.005 USDC per call via x402.

NameTypeReqDescription
company_numberstringyes8-character company number, e.g. "00445790"

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__registered-office ~57

Current registered office address. A few free samples a day, then $0.002 USDC per call via x402.

NameTypeReqDescription
company_numberstringyes8-character company number, e.g. "00445790"

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__search ~57

Find UK companies by name or number, with status, address and incorporation date. A few free samples a day, then $0.003 USDC per call via x402.

NameTypeReqDescription
qstringyesCompany name or number

Structured output declared, but exposes no named fields.

No examples provided.

companies-house__uk-establishments ~54

UK branches of an overseas company. A few free samples a day, then $0.002 USDC per call via x402.

NameTypeReqDescription
company_numberstringyesOverseas company number (FC…)

Structured output declared, but exposes no named fields.

No examples provided.

gleif__autocomplete ~48

Name autocompletion across the LEI index. Free within the daily allowance, then $0.002 USDC per call via x402.

NameTypeReqDescription
qstringyesPartial name

Structured output declared, but exposes no named fields.

No examples provided.

gleif__branches ~44

Registered branches of an entity. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
leistringyesLEI

Structured output declared, but exposes no named fields.

No examples provided.

gleif__by-bic ~50

Which entity holds a SWIFT/BIC code. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
bicstringyesBIC

Structured output declared, but exposes no named fields.

No examples provided.

gleif__by-isin ~50

Which entity issued a security, by ISIN. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
isinstringyesISIN

Structured output declared, but exposes no named fields.

No examples provided.

gleif__direct-children ~47

Entities directly owned by this entity. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
leistringyesLEI

Structured output declared, but exposes no named fields.

No examples provided.

gleif__direct-parent ~47

The direct accounting parent of an entity. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
leistringyesLEI

Structured output declared, but exposes no named fields.

No examples provided.

gleif__fuzzy ~55

Best fuzzy matches of a name to LEIs — for messy company names. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
qstringyesApproximate name

Structured output declared, but exposes no named fields.

No examples provided.

gleif__isins ~49

Securities (ISINs) issued by an entity. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
leistringyesLEI

Structured output declared, but exposes no named fields.

No examples provided.

gleif__lookup ~60

Legal name, addresses, jurisdiction, legal form, status and registration for one LEI. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
leistringyes20-character Legal Entity Identifier

Structured output declared, but exposes no named fields.

No examples provided.

gleif__search ~44

Entities whose legal name matches. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
namestringyesLegal name

Structured output declared, but exposes no named fields.

No examples provided.

gleif__ultimate-parent ~47

The ultimate accounting parent of an entity. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
leistringyesLEI

Structured output declared, but exposes no named fields.

No examples provided.

sanctions__entry ~100

Full record for a matched entry: all aliases, programmes, countries, dates of birth and remarks. A few free samples a day, then $0.005 USDC per call via x402.

NameTypeReqDescription
entry_idinteger–Or entry_id from a screen result
liststring–us-ofac, uk, eu or un
list_idstring–The list's own id (list_id in a screen result)

Structured output declared, but exposes no named fields.

No examples provided.

sanctions__lists ~44

Which lists are mirrored, entry counts, list dates and last sync time. A few free samples a day, then $0.001 USDC per call via x402.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

sanctions__screen ~137

Potential matches across all four lists with score, list, programmes, countries and dates of birth. A few free samples a day, then $0.02 USDC per call via x402.

NameTypeReqDescription
birth_yearinteger–Birth year to corroborate
countrystring–Country to corroborate
listsstring–Comma list: us-ofac,uk,eu,un (default all)
namestringyesPerson, company or vessel name
thresholdinteger–Minimum score 50-100 (default 80)
typestring–individual, entity or vessel

Structured output declared, but exposes no named fields.

No examples provided.

sanctions__screen-uk ~66

Potential matches on the UK Sanctions List only (FCDO). A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
namestringyesName
thresholdinteger–Minimum score (default 80)

Structured output declared, but exposes no named fields.

No examples provided.

sanctions__screen-us ~63

Potential matches on the US OFAC SDN list only. A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
namestringyesName
thresholdinteger–Minimum score (default 80)

Structured output declared, but exposes no named fields.

No examples provided.

sanctions__wallet-screen ~71

Whether a crypto address (BTC, ETH/EVM, TRX, USDT and others) is listed against a designated party on the OFAC SDN list. Free within the daily allowance, then $0.002 USDC per call via x402.

NameTypeReqDescription
addressstringyesWallet address

Structured output declared, but exposes no named fields.

No examples provided.

uk-business__due-diligence ~91

Register profile plus risk flags: status, overdue accounts or confirmation statement, late accounts, insolvency history, Gazette notices, recent name/office changes, LEI and sanctions name screen. Costs $0.08 USDC per call via x402.

NameTypeReqDescription
company_numberstringyes8-character Companies House number, e.g. "00445790" or "SC123456"

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__complaints-contact ~66

Verified complaints address, email, phone and URL for a UK company (energy, telecoms, water, finance…). A few free samples a day, then $0.003 USDC per call via x402.

NameTypeReqDescription
organisationstringyesCompany name

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__consumer-charge ~144

Subscription, gym, retailer or tradesperson charge: rules that apply (Consumer Rights Act 2015), what to ask for, and the escalation ladder to a small claim. Regulated claims are signposted instead. A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
amountstring–Disputed amount £
categorystringyessubscription, gym, retailer, tradesperson, other_consumer (regulated: credit_card, bank, insurance…)
companystring–Who charged you
complained_onstring–Date you complain (default today) YYYY-MM-DD

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__energy-complaint ~109

Back-billing (12-month rule) check, Ombudsman timeline and cited rules for a UK energy complaint. A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
bill_datestring–Date of the catch-up bill YYYY-MM-DD
charges_fromstring–Earliest date the bill charges for
complained_onstring–Date of first complaint
supplierstring–Supplier

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__organisations ~50

Organisations in the complaints directory, private parking operators and UK councils (with London flag). A few free samples a day, then $0.001 USDC per call via x402.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__parking-appeal ~128

Council PCN or private charge: route, deadlines, grounds, tribunal, cited law and strategy. A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
amountstring–Charge £
groundstring–Ground key (see response)
issued_onstringyesYYYY-MM-DD
issuerstring–Council or operator name
ticket_kindstring–parking, box_junction, bus_lane (council)
typestringyescouncil or private

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__telecoms-complaint ~112

ADR timeline (6 or 8 weeks), price-rise rules and penalty-free exit window for a UK telecoms complaint. A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
change_notified_onstring–Date a price/contract change was notified
complained_onstring–Date of first complaint
contract_startstring–Contract start YYYY-MM-DD
providerstring–Provider

Structured output declared, but exposes no named fields.

No examples provided.

uk-disputes__water-complaint ~73

Two-stage complaint, CCW referral and Guaranteed Standards Scheme timeline (England & Wales). A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
companystring–Water company
complained_onstring–Date of first complaint

Structured output declared, but exposes no named fields.

No examples provided.

uk-gazette__deceased-estates ~108

Search UK deceased-estates notices by the deceased's name, optionally narrowed to a year of death. A few free samples a day, then $0.01 USDC per call via x402.

NameTypeReqDescription
death_yearinteger–Year of death, e.g. 2023
limitinteger–Max results (1-50, default 20)
namestringyesName of the deceased, e.g. "John Smith"

Structured output declared, but exposes no named fields.

No examples provided.

uk-gazette__notice ~67

Structured detail for one deceased-estates notice: address, date of death, executor and claim deadline. A few free samples a day, then $0.02 USDC per call via x402.

NameTypeReqDescription
notice_idstringyesGazette notice id from a search result

Structured output declared, but exposes no named fields.

No examples provided.

uk-legislation__changes ~144

Most recent 50 changes (substitutions, repeals, insertions…) made by later legislation, with the amending provision, in-force dates and whether the change is reflected in the text yet. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
numberintegeryesChapter or SI number
typestringyesLegislation type code (ukpga, uksi, asp, ssi, wsi, nisr…; see types)
yearstringyesYear (or regnal year for pre-1963, e.g. Eliz2/10-11)

Structured output declared, but exposes no named fields.

No examples provided.

uk-legislation__item ~129

Title, long title, enactment/made date, status, extent, count of outstanding changes and the full table of contents. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
numberintegeryesChapter or SI number
typestringyesLegislation type code (ukpga, uksi, asp, ssi, wsi, nisr…; see types)
yearstringyesYear (or regnal year for pre-1963, e.g. Eliz2/10-11)

Structured output declared, but exposes no named fields.

No examples provided.

uk-legislation__latest ~51

The newest Acts and instruments published, optionally of one type. Free within the daily allowance, then $0.001 USDC per call via x402.

NameTypeReqDescription
typestring–Type code

Structured output declared, but exposes no named fields.

No examples provided.

uk-legislation__provision ~183

Plain numbered text of one section, regulation, article or schedule paragraph, as it stands today or on a past date, with amendment and commencement notes. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
datestring–Point in time, YYYY-MM-DD (default: current revised text)
numberintegeryesChapter or SI number
provisionstringyesPath such as section/3, regulation/2, article/5 or schedule/1/paragraph/4
typestringyesLegislation type code (ukpga, uksi, asp, ssi, wsi, nisr…; see types)
yearstringyesYear (or regnal year for pre-1963, e.g. Eliz2/10-11)

Structured output declared, but exposes no named fields.

No examples provided.

uk-legislation__search ~103

Find Acts and instruments by title words or full text, optionally by type and year. Free within the daily allowance, then $0.002 USDC per call via x402.

NameTypeReqDescription
pageinteger–Results page (20 per page)
textstring–Words anywhere in the text
titlestring–Words in the title
typestring–Type code (see types)
yearinteger–Year

Structured output declared, but exposes no named fields.

No examples provided.

uk-legislation__types ~38

Type codes and what they mean. Free within the daily allowance, then $0.0005 USDC per call via x402.

Input schema present but exposes no named parameters.

Structured output declared, but exposes no named fields.

No examples provided.

uk-tenders__find-a-tender-latest ~135

Above-threshold UK notices published or updated on Find a Tender in the last 1–7 days, by stage (planning, tender, award), optionally filtered by keyword. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
daysinteger–Look back 1–7 days (default 3)
limitinteger–Max results (default 20, max 50)
qstring–Keyword filter on title, description and buyer
stagestring–planning, tender (default) or award

Structured output declared, but exposes no named fields.

No examples provided.

uk-tenders__notice ~97

One notice in full: description, CPV codes, contract dates, procedure and awards (supplier, value, dates). Accepts a Contracts Finder id (GUID) or a Find a Tender notice number (e.g. 095302-2026). Free within the daily allowance, then $0.002 USDC per call via x402.

NameTypeReqDescription
idstringyesContracts Finder GUID or Find a Tender notice number

Structured output declared, but exposes no named fields.

No examples provided.

uk-tenders__search ~156

Contracts Finder notices by keyword, status (open, closed, awarded, withdrawn), type and publication date, optionally above a minimum value. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
limitinteger–Max results (default 20, max 50)
min_valueinteger–Minimum value in £
published_fromstring–YYYY-MM-DD
published_tostring–YYYY-MM-DD
qstring–Keywords (title, description, buyer, supplier)
statusstring–open, closed, awarded or withdrawn
typestring–contract, pipeline, early-engagement or future-opportunity

Structured output declared, but exposes no named fields.

No examples provided.

uk-tenders__supplier-awards ~75

Contracts Finder awards won by a supplier (name match), newest first, with total value. Free within the daily allowance, then $0.003 USDC per call via x402.

NameTypeReqDescription
published_fromstring–YYYY-MM-DD
supplierstringyesSupplier name (matched as a phrase)

Structured output declared, but exposes no named fields.

No examples provided.

uk-trade-tariff__areas ~94

Tariff geographical areas: countries and the groups used in measures (e.g. 1011 ERGA OMNES, 1013 European Union, trade agreements), with group members. Free within the daily allowance, then $0.002 USDC per call via x402.

NameTypeReqDescription
kindstring–all, countries or groups
qstring–Filter by name or id

Structured output declared, but exposes no named fields.

No examples provided.

Install

How do I install the UK company & compliance data MCP server?

UK company & compliance data is a hosted endpoint at https://fourzerotwo.si/mcp/v/uk-business, 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.

remote · fourzerotwo.si

# add to Claude Code
claude mcp add --transport http si-fourzerotwo-uk-business 'https://fourzerotwo.si/mcp/v/uk-business'
Common questions

What is the UK company & compliance data MCP server?

UK company & compliance data is an MCP server listed in the public MCP registry as si.fourzerotwo/uk-business. Companies House, Gazette notices, sanctions screening, LEIs and UK legislation. This page covers its hosted endpoint (https://fourzerotwo.si/mcp/v/uk-business).

Is the UK company & compliance data MCP server safe to use?

UK company & compliance data scores 77 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 company & compliance data MCP server expose?

UK company & compliance data exposes 58 tools: gleif__lookup, gleif__search, gleif__fuzzy, gleif__autocomplete, gleif__direct-parent, and 53 more. Their descriptions and schemas cost roughly 4,700 tokens of context every time the server is loaded.

Does the UK company & compliance data MCP server require authentication?

No. We connected to UK company & compliance data without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.

Is the UK company & compliance data MCP server still maintained?

UK company & compliance data is still listed as active in the MCP registry. We last reached this channel on 25 October 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.