Nutshell tools for AI agents

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

Connect NutshellSee all 112 toolsAPI docs

Try Nutshell now

Compose the request, copy the prompt, and run it in your agent. It runs on your connected Nutshell account.

Prompt composerMarkdown
Nutshell
Open Relvo
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Supported Nutshell tools

Every Nutshell endpoint Relvo can call on your connected account, with no Relvo usage fee.

112 tools
Get an accountnutshell__e011fe1a74d2ca75e6294040b98423f1Nutshellyour accountDelete an accountnutshell__2ab29d8b08add12de00c9075a1dc934fNutshellyour accountUpdate an accountnutshell__48bf7b1de74805c35713fb7b3a9f1e52Nutshellyour accountGet custom fieldsnutshell__31ef0f539b00b82d394f351491b80103Nutshellyour accountGet a list of custom fieldsnutshell__09c7340848e47c8b7727d7e316702d3dNutshellyour accountCreate a custom fieldnutshell__aa09106535968abeb7ea879a5774eec7Nutshellyour accountGet list items for all accountsnutshell__fea99eec1a11b79a75fd3c6092ea1c95Nutshellyour accountGet a list of accountsnutshell__ee7a9535ab7ae30da91d6d9cebe2ed85Nutshellyour accountUndelete an accountnutshell__23c63a8f80517c993fb93e50e216167bNutshellyour accountGet the fields for an accountnutshell__4eb956de07606de9ea86f6b39feeff20Nutshellyour accountGet a list of account typesnutshell__73f17127f4378721e7a57e7a7890b1b3Nutshellyour accountGet activitiesnutshell__afbafbf6832a5c50439963afb493230fNutshellyour accountCreate an activitynutshell__245ac4db7d1ce9919113871e1fd9d14cNutshellyour accountGet an activitynutshell__386cd1704288a91f21d7ea531d7cdcf6Nutshellyour accountUpdate an activitynutshell__cc696feb60257dd8d550082b06513c14Nutshellyour accountGet activity typesnutshell__e09bcf63999a97ba02d8f461039bbba2Nutshellyour accountGet a list of audiencesnutshell__0e172d1fdc100344130d7c677ea0b498Nutshellyour accountCreate an audiencenutshell__9e1046e87d298eda177cb6323ddaa01cNutshellyour accountGet a competitornutshell__c7625772e8320ae9d155b40b1974291bNutshellyour accountGet a list of competitorsnutshell__3013cdcf2331b70ff8d2cebc7a4c3c81Nutshellyour accountGet a lead-competitor relationshipnutshell__b1d85dde464bf9f894809bdafc72560eNutshellyour accountDelete a lead-competitor relationshipnutshell__851afdd2aef2a992349827409b2e6771Nutshellyour accountUpdate a lead-competitor relationshipnutshell__ba720a5972ac5167437e05f71e3592d0Nutshellyour accountGet a list of lead-competitor relationshipsnutshell__e1accd46a9067a71fe5617536bda2103Nutshellyour accountGet a contactnutshell__8a291bf9a1a7e4a7fd1ca0cabfdaa8a7Nutshellyour accountDelete a contactnutshell__2b3d155b2889d34aa67235e67aa91d3fNutshellyour accountUpdate a contactnutshell__cb995ae09d7e0e99e91b122bcc9358edNutshellyour accountGet contact custom fieldsnutshell__66abde512928a58ff9e3d7fac51a236eNutshellyour accountGet applicable custom fieldsnutshell__6f66fdf709475681e4e16528980ec105Nutshellyour accountCreate a custom fieldnutshell__e156619e0c6caae9203e0c505a33bcadNutshellyour account

Set up Relvo for Nutshell

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 Nutshell 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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 112 Nutshell operations run on your connected Nutshell account. Relvo charges no usage fee; Nutshell 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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 112 Nutshell operations run on your connected Nutshell account. Relvo charges no usage fee; Nutshell 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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 112 Nutshell operations run on your connected Nutshell account. Relvo charges no usage fee; Nutshell 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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 112 Nutshell operations run on your connected Nutshell account. Relvo charges no usage fee; Nutshell 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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 112 Nutshell operations run on your connected Nutshell account. Relvo charges no usage fee; Nutshell 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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 Nutshell tool to get an account and run it on my Nutshell connection. Return Nutshell'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 112 Nutshell operations run on your connected Nutshell account. Relvo charges no usage fee; Nutshell may bill that account on its own plan.

Use Nutshell with any agent

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

All agents
ChatGPTUse Nutshell with ChatGPTClaudeUse Nutshell with ClaudeClaude CodeUse Nutshell with Claude CodeHermes AgentUse Nutshell with Hermes AgentCursorUse Nutshell with CursorGrok BotUse Nutshell with Grok BotCodexUse Nutshell with CodexOpenClawUse Nutshell with OpenClawAny MCP ClientUse Nutshell with Any MCP Client

Explore other platforms

Other shelves in the same catalog. One key reaches all of them.

Browse all platforms
Google SearchBrowse Google Search in the Relvo app. Inspect each tool and compare providers before running a call.11 endpointsXBrowse X in the Relvo app. Inspect each tool and compare providers before running a call.332 endpointsInstagramBrowse Instagram in the Relvo app. Inspect each tool and compare providers before running a call.208 endpointsTikTokBrowse TikTok in the Relvo app. Inspect each tool and compare providers before running a call.231 endpoints

Frequently asked questions

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

Give your agent Nutshell and 147,361 tools

One token reaches your Nutshell account and every catalog tool. Start free.

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