How to integrate Dropbox sign MCP with Grok Build

Connect Grok Build to Dropbox sign MCP. Send nda for signature to new hire, get status of recent signature requests, and more from your terminal, with authentication handled for you.

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Dropbox Sign is an electronic signature platform for sending, signing, and managing legally binding documents online. It streamlines business workflows by making signature collection fast, secure, and effortless.

56 Tools

How to integrate Dropbox sign MCP with Grok Build

Grok Build is xAI's terminal coding agent. It runs on Grok 4.5, plans its work before it acts, and can run multiple sub-agents in parallel. It also reads Claude Code's MCP configuration, so any server you already have in a .mcp.json is picked up with no changes.

In this guide, I will show you how to connect your Dropbox sign account to Grok Build through Composio, so it can send NDA for signature to new hire, get status of recent signature requests, download signed contract from last week, and more without leaving the terminal. Composio holds the OAuth tokens for you, and Grok Build only calls the tools you approve.

Also integrate Dropbox sign with

ChatGPT WorkAntigravityOpenAI Agents SDKClaude Agent SDKClaude CodeClaude CoworkCodexOpenCodeCursorVS CodeOpenClawHermesCLIGoogle ADKLangChainVercel AI SDKMastra AILlamaIndexCrewAI

Why use Composio over a standalone MCP server?

  • Read and write access. Composio's Dropbox sign integration lets Grok Build take real actions like creating drafts, sending updates, and labeling records, not just reading data.
  • 1,000+ SaaS toolkits out of the box. One endpoint gives you a full catalog of pre-built connectors, from Gmail and Slack to Notion, Linear, and Salesforce.
  • One MCP server for every app. Wire up a single Composio server instead of maintaining a separate MCP entry for each app.
  • Smart, context-aware tool loading. Grok Build caps how many tools it holds in a single request. Composio loads only the tools a task needs, so you do not spend that budget on tools you are not using.
  • Cross-app automation. Chain actions across apps in one run. Pull a thread, summarize it in Notion, and post the highlights to Slack from a single prompt.

Prerequisites

  • Grok Build installed and signed in. Install with curl -fsSL https://x.ai/cli/install.sh | bash on macOS or Linux, or irm https://x.ai/cli/install.ps1 | iex on Windows PowerShell. On first launch Grok opens a browser to authenticate; for headless or CI use, set an XAI_API_KEY environment variable instead (create the key at console.x.ai).
  • Access to the Dropbox sign account you want to connect.
  • The Composio MCP endpoint. Composio's server is remote and hosted, so there is nothing to run locally and no tunnel to set up.

Step-by-step: Connect Dropbox sign to Grok Build

1. Install and verify Grok Build

Install the CLI, then restart your shell so the grok binary lands on your PATH:

bash
curl -fsSL https://x.ai/cli/install.sh | bash
which grok

On Windows, install with PowerShell instead: irm https://x.ai/cli/install.ps1 | iex. If which grok returns a path, you are set. Grok Build runs on Grok 4.5 by default; you can switch models inside the session with /model <name>.

2. Add the Composio server

Add Composio as a remote HTTP MCP server with the grok mcp add command:

bash
grok mcp add --transport http composio https://connect.composio.dev/mcp

You can also add and manage servers from inside a session. Run /mcps to open the extensions modal on the MCP tab, then add a new server and paste the Composio URL. Added this way, Grok auto-detects the name from the URL and lists the server as connect:

bash
https://connect.composio.dev/mcp
Grok Build /mcps extensions modal listing MCP servers Grok Build adding the Composio MCP server with its URL

Grok also reads Claude Code-style config, so an entry in ~/.grok/config.toml or a project .mcp.json works the same way.

3. Authenticate

Composio uses OAuth. In the /mcps modal, select the Composio server and press i to authenticate (Grok also triggers this browser flow automatically the first time it uses a Composio tool). Click Allow to authorize access. Grok stores the tokens under ~/.grok/mcp_credentials.json, and /mcps shows Composio as connected.

Grok Build prompting to authenticate the Composio MCP server Composio authorization screen with the Allow button for Grok Build

4. Start building

Ask Grok to work with your Dropbox sign account through Composio. On the first Dropbox sign action, Composio prompts you to connect the account through OAuth. Approve the scopes once, and Composio handles token refresh from there.

What you can do after connecting Dropbox sign

  • Send NDA for signature to new hire
  • Get status of recent signature requests
  • Download signed contract from last week
  • Remind client to sign project agreement

Security + privacy notes (important)

  • Use least-privilege access. Grant only the Dropbox sign scopes you actually need.
  • Review OAuth scopes before approving. Check that the requested scopes match what you expect Composio and Grok Build to do.
  • Keep write actions human-reviewed. Grok Build proposes a plan before it acts. Leave that approval step on for actions like sending messages or editing records.
  • Keep secrets out of version control. Your XAI_API_KEY and any tokens should never be committed. Use environment variables or a secrets manager.
TOOLS

Supported Tools

Every Dropbox sign action and event your agent gets out of the box.

Invite User to Team

Tool to invite a user to your Team.

Add User to Template

Tool to grant a specified account access to a template.

Bulk create embedded signature request with template

Tool to create a BulkSendJob for embedded templated signature requests.

Bulk send with template

Tool to create a BulkSendJob for templated signature requests.

Cancel Signature Request

Cancels an incomplete signature request.

Create Dropbox Sign Account

Tool to create a new Dropbox Sign account associated with a specified email address.

Create API App

Tool to create a new Dropbox Sign API App.

Create Embedded Signature Request

Tool to create an embedded signature request for signing in an iFrame.

Create Embedded Signature Request With Template

Tool to create an embedded signature request based on a template.

Create Embedded Template Draft

Tool to create an embedded template draft.

Create Embedded Unclaimed Draft with Template

Tool to create an embedded unclaimed draft using saved templates.

Create Report

Request creation of CSV report(s) for a specified date range.

Create Template

Tool to create a reusable template for document signing workflows.

Create Unclaimed Draft

Tool to create an unclaimed draft that can be claimed via a unique URL.

Delete API App

Tool to delete an API App from your Dropbox Sign account by its client_id.

Delete Fax

Tool to delete a fax from the system by its fax_id.

Delete Template

Permanently deletes a template from your Dropbox Sign account by its template_id.

Download Signature Request Files

Download files for a signature request as PDF (merged) or ZIP (individual documents).

Edit and Resend Embedded Signature Request

Tool to edit and resend an embedded signature request.

Edit and Resend Signature Request

Edits and resends an existing non-templated signature request with updated documents, signers, or settings.

Edit and Resend Unclaimed Draft

Tool to edit and resend a previously created unclaimed draft.

Edit and Resend Embedded Signature Request With Template

Tool to edit and resend an embedded signature request using templates.

Get Dropbox Sign Account

Retrieves detailed information about a Dropbox Sign account including quotas, payment status, and settings.

Get API App

Tool to retrieve information about an API App by its client ID.

Get Bulk Send Job

Tool to retrieve the status of a bulk send job.

Get Current Team Membership

Tool to get the current team membership status and details.

Get Embedded Sign URL

Retrieves an embedded signing URL for a specific signer's signature.

Get Embedded Template Edit URL

Tool to generate an edit URL for embedded template editing.

Get Available Fax Line Area Codes

Tool to retrieve available fax line area codes for a given country, state/province, and city.

Get Signature Request

Retrieves the current status and complete details of a signature request by ID.

Get Signature Request Files as Data URI

Tool to download signature request files as a base64-encoded data URI.

Get Signature Request Files as File URL

Retrieves a copy of the current documents and returns a JSON object with a URL to the file (PDFs only).

Get Team Info

Retrieves information about a Dropbox Sign team, including team name, member count, and sub-team count.

Get Template

Tool to return the specified template.

Download Template Files

Tool to download documents associated with a template.

Get Template Files as Data URI

Tool to retrieve template documents as base64-encoded data URI.

Get Template Files as File URL

Tool to retrieve a copy of template documents and return a JSON object with a URL to the file (PDFs only).

List API Apps

Tool to list API Apps.

List Bulk Send Jobs

Tool to list bulk send jobs.

List Faxes

Tool to list faxes and their properties.

List Fax Lines

Tool to list fax lines and their properties.

List Signature Requests

Tool to list signature requests.

List Sub-Teams

Lists all sub-teams belonging to a parent team with pagination support.

List Team Members

Lists all members and their roles for a specific team.

List All Teams

Lists all Dropbox Sign teams accessible to the authenticated user, including the current team and its sub-teams.

List Templates

Tool to list templates.

Generate OAuth Authorization URL

Tool to generate an OAuth authorization URL.

Release Signature Request Hold

Release a held signature request to send it to signers.

Remove User from Template

Tool to remove an account's access to a template.

Send Signature Request

Tool to create and send a new signature request with documents.

Send Request Reminder

Sends an email reminder to a signer about a pending signature request.

Update Dropbox Sign Account

Tool to update Dropbox Sign account properties and settings.

Update API App

Tool to update an existing API App in Dropbox Sign.

Update Signature Request

Updates the email address and/or name for a specific signer on a signature request.

Update Template Files

Tool to update files for an existing template.

Verify Dropbox Sign Account

Tool to verify whether a Dropbox Sign account exists for the given email.

FRAMEWORKS

How to build Dropbox sign MCP Agent with another framework

ChatGPT Work logo

ChatGPT Work

Use Dropbox sign MCP with ChatGPT Work

Antigravity logo

Antigravity

Use Dropbox sign MCP with Antigravity

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Dropbox sign MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Dropbox sign MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Dropbox sign MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Dropbox sign MCP with Claude Cowork

Codex logo

Codex

Use Dropbox sign MCP with Codex

Cursor logo

Cursor

Use Dropbox sign MCP with Cursor

VS Code logo

VS Code

Use Dropbox sign MCP with VS Code

OpenCode logo

OpenCode

Use Dropbox sign MCP with OpenCode

OpenClaw logo

OpenClaw

Use Dropbox sign MCP with OpenClaw

Hermes logo

Hermes

Use Dropbox sign MCP with Hermes

CLI logo

CLI

Use Dropbox sign MCP with CLI

Google ADK logo

Google ADK

Use Dropbox sign MCP with Google ADK

LangChain logo

LangChain

Use Dropbox sign MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Dropbox sign MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Dropbox sign MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Dropbox sign MCP with LlamaIndex

CrewAI logo

CrewAI

Use Dropbox sign MCP with CrewAI

FAQ

Frequently asked questions

A standalone Dropbox sign MCP server gives Grok Build a fixed set of Dropbox sign tools tied to that one server. The Composio Tool Router lets Grok Build load tools from Dropbox sign and many other apps on demand, based on the task, all through a single endpoint.

Yes. Grok Build ships with native MCP support. Add a server with the grok mcp add command, from the in-session /mcps modal, or by editing ~/.grok/config.toml. It also reads Claude Code-style .mcp.json files, so Grok Build discovers the tools automatically.

Yes. Grok Build has zero-migration compatibility with Claude Code's configuration, so the same Composio server entry works in both without edits.

Tokens, keys, and configuration are encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant, so your Dropbox sign data and credentials are handled to that standard.

Start with Dropbox sign.It takes 30 seconds.

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Customer stories

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Karan skipped his own birthday party to fix our critical issue. It was 10pm and he diverted his Waymo to help us instead. This really sets the bar — it shows the commitment you need when users rely on your software.

Harsha Gaddipati
Harsha Gaddipati
Co-founder, Slashy

A lot of students tell us that the moment their connected tools start talking to each other inside Opennote feels almost magical. The agent just knows them, and it's immensely helped keep new users on the platform.

Abhi Arya
Abhi Arya
Co-founder, Opennote

We chose Composio over Pipedream because it delivered depth where it mattered — niche tools and tricky edge cases other platforms simply ignored. That gave us confidence to scale without compromising.

Nirman Dave
Nirman Dave
CEO, Zams

As a solo builder, shipping fast is life or death. The only way I can outcompete incumbents is by outmanoeuvring them. Getting bogged down managing agent auth would have been a death sentence.

Ryan Yu
Ryan Yu
Founder, Extra Thursday

Before Composio, adding tool integrations was slow and resource-intensive. Each one could take weeks of engineering time, and maintaining them meant constantly keeping up with API changes.

Tomisin Jenrola
Tomisin Jenrola
Founder & CEO, SwarmZero

With hands-on help from their founder, we integrated Gmail and Google Drive in just 30 minutes. This level of personal support and commitment is exactly what startups should strive for.

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Jerome Leclanche
Co-Founder, Ingram Technologies