Companies House (UK) tools for AI agents

Call Companies House (UK)'s API on your own Companies House (UK) account. Connect it once in the Relvo app; Relvo adds its credentials and charges no usage fee.

Connect Companies House (UK)See all 34 toolsAPI docs

Try Companies House (UK) now

Compose the request, copy the prompt, and run it in your agent. It runs on your connected Companies House (UK) account.

Prompt composerMarkdown
Companies House (UK)
Open Relvo
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Supported Companies House (UK) tools

Every Companies House (UK) endpoint Relvo can call on your connected account, with no Relvo usage fee.

34 tools
Registered Office Addresscompanies_house__get_company_company_number_registered_of_3b2484Companies House (UK)your accountCompany profilecompanies_house__get_company_company_numberCompanies House (UK)your accountSearch Allcompanies_house__get_searchCompanies House (UK)your accountSearch companiescompanies_house__get_search_companiesCompanies House (UK)your accountSearch company officerscompanies_house__get_search_officersCompanies House (UK)your accountSearch disqualified officerscompanies_house__get_search_disqualified_officersCompanies House (UK)your accountSearch for a dissolved companycompanies_house__get_dissolved_search_companiesCompanies House (UK)your accountSearch for a companycompanies_house__get_alphabetical_search_companiesCompanies House (UK)your accountCompany Officerscompanies_house__get_company_company_number_officersCompanies House (UK)your accountGet a company officer appointmentcompanies_house__get_company_company_number_appointments_9ac4e2Companies House (UK)your accountCompany registerscompanies_house__get_company_company_number_registersCompanies House (UK)your accountfilingHistoryItem resourcecompanies_house__get_company_company_number_filing_histor_4ed62bCompanies House (UK)your accountfilingHistoryList resourcecompanies_house__get_company_company_number_filing_historyCompanies House (UK)your accountCompany exemptions informationcompanies_house__get_company_company_number_exemptionsCompanies House (UK)your accountGet natural officers disqualificationscompanies_house__get_disqualified_officers_natural_officer_idCompanies House (UK)your accountGet a corporate officers disqualificationscompanies_house__get_disqualified_officers_corporate_officer_idCompanies House (UK)your accountOfficer Appointment Listcompanies_house__get_officers_officer_id_appointmentsCompanies House (UK)your accountChargescompanies_house__get_company_company_number_chargesCompanies House (UK)your accountIndividual charge information for companycompanies_house__get_company_company_number_charges_charge_idCompanies House (UK)your accountCompany insolvency informationcompanies_house__get_company_company_number_insolvencyCompanies House (UK)your accountCompany UK Establishmentscompanies_house__get_company_company_number_uk_establishmentsCompanies House (UK)your accountList the company persons with significant controlcompanies_house__get_company_company_number_persons_with_22a980Companies House (UK)your accountGet the individual person with significant control notificationcompanies_house__get_company_company_number_persons_with_afa8f2Companies House (UK)your accountGet the individual beneficial owner notificationcompanies_house__get_company_company_number_persons_with_5c08e9Companies House (UK)your accountGet the corporate entity with significant control notificationcompanies_house__get_company_company_number_persons_with_d7e65cCompanies House (UK)your accountGet the corporate entity beneficial owner notificationcompanies_house__get_company_company_number_persons_with_a4aedaCompanies House (UK)your accountGet the legal person with significant control notificationcompanies_house__get_company_company_number_persons_with_262cd0Companies House (UK)your accountGet the legal person beneficial owner notificationcompanies_house__get_company_company_number_persons_with_cc14aaCompanies House (UK)your accountGet the person with significant control statementcompanies_house__get_company_company_number_persons_with_6c47ebCompanies House (UK)your accountGet the super secure person with significant controlcompanies_house__get_company_company_number_persons_with_dd6a78Companies House (UK)your account

Set up Relvo for Companies House (UK)

Pick the client you use, then pick a route: Automatic is that client's own link, command or prompt, and Manual is the same install done by hand. Both end at the same OAuth sign-in, with every tool on the Companies House (UK) shelf behind one connector.

Automatic way

Open the plugin page with the details ready.

ChatGPT takes custom MCP servers as plugins. The button opens the right page; copy the name and URL into the form and authorise once.

Open ChatGPT plugins

  1. Add a custom MCP server

    On the plugins page, click + and choose Add custom MCP server.

  2. Fill in the connection

    NameRelvo
    Connectionhttps://app.relvo.si/mcp

  3. Authorise and create

    Pick OAuth, tick the confirmation and click Create as a plugin. Approve Relvo in the browser window ChatGPT opens.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Custom MCP servers are set up in ChatGPT on the web, not in the mobile app. Connect once and every chat can call Relvo.

Manual way

Set it up from ChatGPT's settings.

The same connector, reached through the settings menu instead of the plugin page.

  1. Open Apps & Connectors

    In ChatGPT, open Settings → Apps & Connectors and create a new custom connector.

  2. Name it Relvo

    NameRelvo

  3. Point it at Relvo

    Connectionhttps://app.relvo.si/mcp

  4. Authenticate

    Choose OAuth, continue, and approve Relvo in the browser. ChatGPT saves the connector to your account.

  5. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 34 Companies House (UK) operations run on your connected Companies House (UK) account. Relvo charges no usage fee; Companies House (UK) may bill that account on its own plan.

Automatic way

One link fills in the dialog.

On a desktop browser this opens Claude's Add custom connector form with Relvo's name and MCP URL already in place. Click Add and sign in — there is nothing to type.

Add the Relvo connector

  1. Open the dialog

    Click the button above in the browser where you are signed in to Claude. Customize → Connectors opens with the custom-connector form ready.

  2. Add and authorise

    Click Add, then choose Sign in now under Authentication. Relvo signs you in over OAuth, so no token or API key is pasted into Claude.

  3. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Manual way

The same connector, typed by hand.

Use this on a phone, in a locked-down workspace, or whenever you would rather add the connector through Claude's own menu.

  1. Open Connectors

    In Claude, go to Customize → Connectors and choose + Add → Add custom connector.

  2. Name the connector

    NameRelvo

  3. Paste the MCP URL

    Server URLhttps://app.relvo.si/mcp

  4. Sign in

    Click Add, choose Sign in now under Authentication, and approve Relvo in the OAuth window. The Relvo tools appear under the connector.

  5. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 34 Companies House (UK) operations run on your connected Companies House (UK) account. Relvo charges no usage fee; Companies House (UK) may bill that account on its own plan.

Automatic way

One command, then one sign-in.

The CLI registers Relvo with HTTP transport and writes it into your Claude Code config; authentication happens in the browser.

  1. Run the command

    BASH
    claude mcp add --transport http relvo https://app.relvo.si/mcp

  2. Authenticate once

    Open a session and run /mcp. Choose Relvo → Authenticate; Claude Code opens Relvo's OAuth page and stores the token for the project.

  3. Check the list

    BASH
    claude mcp list

    Relvo shows as connected, with every catalog tool behind it.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The client picks the matching operations and runs them on your connected account.

The command uses local scope by default. Add --scope user to make Relvo available in every project, or --scope project to share it through the repository.

Manual way

Write it into .mcp.json.

Project scope lives in a file, so the whole team gets Relvo without running a command.

  1. Add the server

    JSON · .mcp.json
    {
  "mcpServers": {
    "relvo": {
      "type": "http",
      "url": "https://app.relvo.si/mcp"
    }
  }
}

    Create .mcp.json in the project root and add relvo as an HTTP server.

  2. Reload and sign in

    Start a Claude Code session, run /mcp, choose Relvo → Authenticate, then reload. The tools are available in that project.

  3. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

The same entry works for every project when it is added at user scope instead of project scope. All 34 Companies House (UK) operations run on your connected Companies House (UK) account. Relvo charges no usage fee; Companies House (UK) may bill that account on its own plan.

Automatic way

Hand the setup to Hermes.

Hermes can edit its own config, so one instruction is enough: it writes Relvo into mcp_servers, reloads, and reports the tools it can now call.

  1. Copy the setup prompt

    PROMPT
    Add Relvo as a remote MCP server named "relvo": url https://app.relvo.si/mcp, auth oauth. Follow https://app.relvo.si/SKILL.md, reload MCP, then list the Relvo tools.

  2. Paste it into a Hermes session

    Hermes adds the remote server to ~/.hermes/config.yaml and reloads its MCP connections.

  3. Approve the sign-in

    Open the OAuth link Hermes prints and approve Relvo once. The token is cached, so later sessions do not ask again.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Manual way

Add it to ~/.hermes/config.yaml.

Two settings and one reload — the same entry Hermes would write itself.

  1. Open the config

    Edit ~/.hermes/config.yaml, the file Hermes reads at start-up.

  2. Add the server

    YAML
    mcp_servers:
  Relvo:
    url: https://app.relvo.si/mcp
    auth: oauth

  3. Reload and sign in

    In a session, run /reload-mcp, then approve the OAuth prompt Hermes shows. Tokens are cached under ~/.hermes/mcp-tokens/.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 34 Companies House (UK) operations run on your connected Companies House (UK) account. Relvo charges no usage fee; Companies House (UK) may bill that account on its own plan.

Automatic way

Hand the install to Cursor.

The button opens Cursor's MCP install dialog with the server name and URL already attached.

Add Relvo to Cursor

  1. Open the install prompt

    Click the button on the machine where Cursor is installed. Cursor receives a server named relvo pointing at https://app.relvo.si/mcp.

  2. Install and authenticate

    Confirm the install, then click Authenticate. Cursor completes Relvo's OAuth in the browser.

  3. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The client picks the matching operations and runs them on your connected account.

The install link opens Cursor directly, so it does nothing in a browser that has never installed the editor.

Manual way

Edit ~/.cursor/mcp.json.

Use the global or the project file when you want the entry under your own control.

  1. Open the MCP config

    Edit ~/.cursor/mcp.json for every project, or .cursor/mcp.json inside the repository for one.

  2. Add Relvo

    JSON
    {
  "mcpServers": {
    "relvo": {
      "url": "https://app.relvo.si/mcp"
    }
  }
}

  3. Reload Cursor

    Save the file and reload the window. Relvo appears in the MCP panel, and Authenticate finishes the sign-in.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 34 Companies House (UK) operations run on your connected Companies House (UK) account. Relvo charges no usage fee; Companies House (UK) may bill that account on its own plan.

Automatic way

Ask the Bot to wire it up.

Grok Bot configures connections from the conversation, so the quickest route is a single instruction with Relvo's address.

  1. Copy the setup prompt

    PROMPT
    Add a custom MCP server called relvo at https://app.relvo.si/mcp with OAuth sign-in, then list the Relvo tools.

  2. Paste it into a Bot chat

    The Bot repeats the server name and URL and asks you to confirm. Check them and select Add it.

  3. Authorise

    Select Authorize on the card the Bot sends and approve Relvo in the browser once. The Bot can then call the catalog from any chat.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The client picks the matching operations and runs them on your connected account.

Manual way

Name the server yourself in the chat.

Grok Bot's settings have no field for a server URL; custom MCP servers are added from the conversation.

  1. Describe the server

    NameRelvo
    Server URLhttps://app.relvo.si/mcp

    Ask the Bot to add a custom server with this name and URL. Say custom server, or it may offer a catalog plugin instead.

  2. Confirm

    The Bot repeats the name and URL. Check that the URL is https://app.relvo.si/mcp, then select Add it.

  3. Authorise

    Select Authorize on the card the Bot sends, sign in and allow access. The Relvo tools appear once you are signed in.

  4. Ask for the right tool

    PROMPT
    Using Relvo, find the right Companies House (UK) tool to search all and run it on my Companies House (UK) connection. Return Companies House (UK)'s response as it comes back.

    The agent picks the matching operations, runs them on your connection, then relays the provider's response verbatim.

All 34 Companies House (UK) operations run on your connected Companies House (UK) account. Relvo charges no usage fee; Companies House (UK) may bill that account on its own plan.

Use Companies House (UK) with any agent

Pick the client you already use. Every one reaches the same catalog through one Relvo key.

All agents
ChatGPTUse Companies House (UK) with ChatGPTClaudeUse Companies House (UK) with ClaudeClaude CodeUse Companies House (UK) with Claude CodeHermes AgentUse Companies House (UK) with Hermes AgentCursorUse Companies House (UK) with CursorGrok BotUse Companies House (UK) with Grok BotCodexUse Companies House (UK) with CodexOpenClawUse Companies House (UK) with OpenClawAny MCP ClientUse Companies House (UK) with Any MCP Client

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Frequently asked questions

Short answers about the key, the price and the call itself.

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