CompanyVerify
REMOTE · API.COMPANYVERIFY.UK
UK company lookup, LEIs and sanctions name matching for agents, with source provenance.
Available components
Last scanned (22 hours ago)
Scores higher than 43% of remote servers
Reachable. Last reached 4 Nov 2026.
Category Security
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 Security46
- The endpoint's TLS certificate is valid, in date, and uses a strong key. View diagnostics → Pass
- Authorisation not fully verified: no authorisation is required to call this server, and 20 tool(s) never declared a destructiveHint. The MCP spec treats an absent hint as destructive by default, so we cannot call this surface safe. See how to fix → View diagnostics → Unverified
- HTTPS enforcement could not be verified: the plaintext port answered with HTTP 405, which proves neither a plaintext path nor enforcement. View diagnostics → Unverified
- HSTS check failed: the Strict-Transport-Security header is absent. See how to fix → View diagnostics → Fail
- DNSSEC check failed: this domain isn't protected by DNSSEC. See how to fix → View diagnostics → Fail
Transport & Reachability100
- Verified streamable-http transport via a live MCP handshake. View diagnostics → Pass
Schema Quality & AI Usability66
- AI-judged instruction clarity (good).Pass
- Tool/resource definitions use about 1354 tokens (~67/item across 20 items; 20 tools + 0 resources), lean.Pass
- Usage-examples check failed: none of the tools include examples. See how to fix → Fail
Stability & Change Management0
- Stability check failed: schema churn in the 2 days we've observed: 0 tool removals, 5 breaking changes, 0 auth/transport breaks, 0 additions. See how to fix → Fail
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 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; "charge_register" implies "charge" and declares no destructiveHint at all, which the MCP spec reads as destructive by default. See how to fix → Fail
- An AI judge read all 20 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.
- 4 Nov 26 0
- Stability: 0.03 → fail ▼ security
- A breaking change shipped without a version bump: still 0.1.0 ▼ security
- Tool “lei_lookup” rewrote its description, which is the text the model reads security
- “fca_register_check” added a required parameter “identifier_type”, so existing callers break ▼ functional
- “fca_register_check” added a required parameter “identifier_value”, so existing callers break ▼ functional
- “kyb_verdict” added a required parameter “identifier_type”, so existing callers break ▼ functional
- “kyb_verdict” added a required parameter “identifier_value”, so existing callers break ▼ functional
- “lei_lookup” added a required parameter “identifier_type”, so existing callers break ▼ functional
- “lei_lookup” added a required parameter “identifier_value”, so existing callers break ▼ functional
- “uk_insolvency_notices” added a required parameter “identifier_type”, so existing callers break ▼ functional
- “uk_insolvency_notices” added a required parameter “identifier_value”, so existing callers break ▼ functional
- “vessel_sanctions” added a required parameter “identifier_type”, so existing callers break ▼ functional
- “vessel_sanctions” added a required parameter “identifier_value”, so existing callers break ▼ functional
- “fca_register_check” dropped the optional parameter “firm” cosmetic
- “fca_register_check” dropped the optional parameter “frn” cosmetic
- “kyb_verdict” dropped the optional parameter “company_number” cosmetic
- “kyb_verdict” dropped the optional parameter “name” cosmetic
- “lei_lookup” dropped the optional parameter “lei” cosmetic
- “lei_lookup” dropped the optional parameter “name” cosmetic
- “uk_insolvency_notices” dropped the optional parameter “company_number” cosmetic
- “uk_insolvency_notices” dropped the optional parameter “name” cosmetic
- “vessel_sanctions” dropped the optional parameter “imo” cosmetic
- “vessel_sanctions” dropped the optional parameter “name” cosmetic
- 3 Nov 26 0
- Stability: unverified → 0.03 ▲ functional
- 2 Nov 26 57
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 4 Nov 2026 · Probed https://api.companyverify.uk/mcp
TLS valid
Negotiated TLS 1.3 with TLS_AES_128_GCM_SHA256 .
| Subject | Issuer | Valid from | Valid until | Key | Signature | Serial |
|---|---|---|---|---|---|---|
| CN=companyverify.uk | CN=YE2,O=Let's Encrypt,C=US | 2 Nov 2026 | 31 Jan 2027 | ECDSA 256 | ECDSA-SHA384 | 6bb268fd5a8e0e8a858e96ff34f3914ffa2 |
| SANs: *.companyverify.uk, companyverify.uk | ||||||
| CN=YE2,O=Let's Encrypt,C=US (CA) | CN=Root YE,O=ISRG,C=US | 3 Sept 2025 | 2 Sept 2028 | ECDSA 384 | ECDSA-SHA384 | 4df3b15dd6c0784c507cd37b58e6f115 |
| CN=Root YE,O=ISRG,C=US (CA) | CN=ISRG Root X2,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | ECDSA-SHA384 | 872165fc34b6e5fba8add5b3705fb53a |
| CN=ISRG Root X2,O=Internet Security Research Group,C=US (CA) | CN=ISRG Root X1,O=Internet Security Research Group,C=US | 13 May 2026 | 2 Sept 2032 | ECDSA 384 | SHA256-RSA | 6c8f1dc727c7117f7baf853ac980f9cd |
Background: What to check on a remote MCP endpoint →
DNSSEC insecure
Validation of api.companyverify.uk. — Not signed
| Zone | DS | Keys | Algorithms | Outcome |
|---|---|---|---|---|
| . | trust_anchor | 20326, 38696 | 8, 8 | Verified |
| uk. | present | 43876 | 8 | Verified |
| companyverify.uk. | 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 |
Background: How OAuth 2.1 works in the 2026 MCP spec →
Transports 2 probes
| Transport | URL | Outcome | Status | Location |
|---|---|---|---|---|
| streamable-http | https://api.companyverify.uk/mcp | Verified | 200 | |
| http (plaintext) | http://api.companyverify.uk/mcp | Inconclusive | 405 |
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 →
adverse_media Adverse media screen ~39
Roadmap probe, not yet served: adverse media screening with citations. Calling records the requirement and returns not-covered.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | name |
No output schema declared.
No examples provided.
charge_register Charges register lookup ~40
Roadmap probe, not yet served: outstanding charges and security for a UK company. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | company_number |
No output schema declared.
No examples provided.
cross_registry_resolve Cross-registry entity resolution ~78
Roadmap probe, not yet served: resolve a company across Companies House, GLEIF, OpenOwnership and sanctions lists into one entity record with per-assertion provenance. Calling records the ask and returns not-covered.
| Name | Type | Req | Description |
|---|---|---|---|
| identifiers | object | – | identifiers |
| jurisdiction | string | – | jurisdiction |
| name | string | yes | name |
No output schema declared.
No examples provided.
entity_match Entity match verdict ~111
Compare two company references using supplied company-number/LEI equality and normalised name similarity. When one reference has a UK company number and the other only a name, optionally corroborates against Companies House. LEIs are compared as supplied, not validated against GLEIF by this tool. Returns a verdict, heuristic confidence and signal provenance.
| Name | Type | Req | Description |
|---|---|---|---|
| a | object | yes | First reference: {name, company_number?, lei?} |
| b | object | yes | Second reference: {name, company_number?, lei?} |
No output schema declared.
No examples provided.
eu_vat_check EU VAT number check ~38
Roadmap probe, not yet served: VIES VAT validation with provenance. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| vat | string | yes | vat |
No output schema declared.
No examples provided.
fca_register_check FCA register check ~69
Roadmap probe, not yet served: authorisation status of a firm or individual on the FCA register. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| identifier_type | string | yes | Whether identifier_value is an FCA reference number or firm name |
| identifier_value | string | yes | FCA reference number or firm name |
No output schema declared.
No examples provided.
find_capability Find a data capability ~35
Search live and honestly planned data capabilities. Searches inform build priority.
| Name | Type | Req | Description |
|---|---|---|---|
| query | string | – | What data or verdict you need |
No output schema declared.
No examples provided.
kyb_verdict Full KYB verdict ~92
Roadmap probe, not yet served: single-call KYB verdict (exists, active, officers, PSC, sanctions, insolvency) with signed provenance receipt. Calling records the requirement and returns not-covered.
| Name | Type | Req | Description |
|---|---|---|---|
| identifier_type | string | yes | Whether identifier_value is a Companies House number or company name |
| identifier_value | string | yes | Companies House number or company name |
| jurisdiction | string | – | jurisdiction |
No output schema declared.
No examples provided.
lei_lookup LEI lookup (GLEIF) ~98
Resolve a legal entity to its Legal Entity Identifier via the GLEIF API. Supply identifier_type as lei or name, and identifier_value accordingly. Returns LEI, legal name, jurisdiction, status and registration dates. CC0 source data, provenance attached.
| Name | Type | Req | Description |
|---|---|---|---|
| identifier_type | string | yes | Whether identifier_value is a 20-character LEI or a legal name |
| identifier_value | string | yes | 20-character LEI or legal entity name |
No output schema declared.
No examples provided.
pep_screen PEP screen ~65
Roadmap probe, not yet served: politically exposed person screening. Calling records the requirement and returns a structured not-covered response. Sanctions-only screening is live at /v1/screen/sanctions.
| Name | Type | Req | Description |
|---|---|---|---|
| country | string | – | country |
| name | string | yes | name |
No output schema declared.
No examples provided.
registry_doc_fetch Registry filing fetch ~54
Roadmap probe, not yet served: fetch and parse a specific Companies House filing into structured JSON. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | company_number |
| filing_type | string | – | filing_type |
No output schema declared.
No examples provided.
request_data Request a dataset or capability ~93
State a data requirement, intended use, expected monthly volume and acceptable price. Free and logged to inform build priority.
| Name | Type | Req | Description |
|---|---|---|---|
| contact | string | – | Optional contact for a future reply |
| description | string | yes | The data or verdict you need |
| max_price_usd | number | – | max_price_usd |
| use_case | string | – | use_case |
| volume_per_month | integer | – | volume_per_month |
No output schema declared.
No examples provided.
sanctions_screen Sanctions screen (primary lists) ~90
Screen a person or entity name against sanctions lists loaded directly from primary government sources (configurable: OFAC SDN and consolidated, the UK Sanctions List). Returns match verdict, candidate hits with scores, list versions and retrieval timestamps. Not a PEP or adverse-media screen.
| Name | Type | Req | Description |
|---|---|---|---|
| name | string | yes | Person or entity name to screen |
| threshold | number | – | Match threshold 0..1 |
No output schema declared.
No examples provided.
uk_company_profile UK company profile with officers ~76
Full Companies House profile for a company number: status, SIC codes, registered office, accounts and confirmation statement dates, plus the first page of officers (up to 35), with explicit total/coverage metadata. Primary source, cached for up to 24 hours, provenance attached.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | Companies House number |
No output schema declared.
No examples provided.
uk_company_search UK company search ~74
Search the UK Companies House register by name or number. Returns candidate companies with number, status, type, incorporation date and registered address, with provenance. Primary source with retrieval timestamp; cached for up to 24 hours.
| Name | Type | Req | Description |
|---|---|---|---|
| limit | integer | – | Max results |
| q | string | yes | Company name or company number |
No output schema declared.
No examples provided.
uk_director_changes Director change monitoring ~53
Roadmap probe, not yet served: per-entity change feed for officer appointments and resignations, priced per delta. Calling records the requirement and returns not-covered.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | company_number |
No output schema declared.
No examples provided.
uk_insolvency_notices Insolvency notice feed (Gazette) ~73
Roadmap probe, not yet served: structured Gazette insolvency notices for a monitored entity, per event. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| identifier_type | string | yes | Whether identifier_value is a Companies House number or entity name |
| identifier_value | string | yes | Companies House number or entity name to monitor |
No output schema declared.
No examples provided.
uk_procurement_awards UK procurement award lookup ~45
Roadmap probe, not yet served: contract awards for a supplier from Find a Tender OCDS data. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| supplier | string | yes | supplier |
No output schema declared.
No examples provided.
uk_psc_ubo UK beneficial ownership (PSC) resolution ~62
Roadmap probe, not yet served: resolved beneficial-ownership chain for a UK company from PSC data, entity-resolved across registries. Calling this records your requirement and returns a structured not-covered response.
| Name | Type | Req | Description |
|---|---|---|---|
| company_number | string | yes | company_number |
No output schema declared.
No examples provided.
vessel_sanctions Vessel sanctions screen ~69
Roadmap probe, not yet served: screen a vessel (IMO, name, flag) against sanctions designations. Calling records the requirement.
| Name | Type | Req | Description |
|---|---|---|---|
| identifier_type | string | yes | Whether identifier_value is an IMO number or vessel name |
| identifier_value | string | yes | IMO number or vessel name |
No output schema declared.
No examples provided.
How do I install the CompanyVerify MCP server?
CompanyVerify is a hosted endpoint at https://api.companyverify.uk/mcp, 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 · api.companyverify.uk
claude mcp add --transport http greg-wilko-companyverify 'https://api.companyverify.uk/mcp'
What is the CompanyVerify MCP server?
CompanyVerify is an MCP server listed in the public MCP registry as io.github.greg-wilko/companyverify. UK company lookup, LEIs and sanctions name matching for agents, with source provenance. This page covers its hosted endpoint (https://api.companyverify.uk/mcp).
Is the CompanyVerify MCP server safe to use?
CompanyVerify scores 57 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 CompanyVerify MCP server expose?
CompanyVerify exposes 20 tools: uk_company_search, uk_company_profile, lei_lookup, sanctions_screen, entity_match, and 15 more. Their descriptions and schemas cost roughly 1,354 tokens of context every time the server is loaded.
Does the CompanyVerify MCP server require authentication?
No. We connected to CompanyVerify without credentials and it answered, so anything it exposes is reachable by anyone who knows the address.
Is the CompanyVerify MCP server still maintained?
CompanyVerify is still listed as active in the MCP registry. We last reached this channel on 4 November 2026. Those dates come from our own scans of the registry and the channel itself, not from anything the publisher announced.