How to integrate Anthropic administrator MCP with Grok Build

Connect Grok Build to Anthropic administrator MCP. List all available anthropic models, get details for a specific anthropic model, and more from your terminal, with authentication handled for you.

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Api Key

Anthropic administrator is an API for managing Anthropic organizational resources like members, workspaces, and API keys. It helps you automate admin tasks and streamline resource management across your Anthropic organization.

3 Tools

How to integrate Anthropic administrator 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 Anthropic administrator account to Grok Build through Composio, so it can list all available Anthropic models, get details for a specific Anthropic model, cache a frequently used prompt template, and more without leaving the terminal. Composio holds the OAuth tokens for you, and Grok Build only calls the tools you approve.

Also integrate Anthropic administrator 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 Anthropic administrator 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 Anthropic administrator 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 Anthropic administrator 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 Anthropic administrator account through Composio. On the first Anthropic administrator 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 Anthropic administrator

  • List all available Anthropic models
  • Get details for a specific Anthropic model
  • Cache a frequently used prompt template
  • Generate a message completion using chat history

Security + privacy notes (important)

  • Use least-privilege access. Grant only the Anthropic administrator 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 Anthropic administrator action and event your agent gets out of the box.

Create Message

Create a message completion from Claude.

Get Model

Tool to retrieve details of a specific model by its ID.

List models

Tool to list available models.

FRAMEWORKS

How to build Anthropic administrator MCP Agent with another framework

ChatGPT Work logo

ChatGPT Work

Use Anthropic administrator MCP with ChatGPT Work

Antigravity logo

Antigravity

Use Anthropic administrator MCP with Antigravity

OpenAI Agents SDK logo

OpenAI Agents SDK

Use Anthropic administrator MCP with OpenAI Agents SDK

Claude Agent SDK logo

Claude Agent SDK

Use Anthropic administrator MCP with Claude Agent SDK

Claude Code logo

Claude Code

Use Anthropic administrator MCP with Claude Code

Claude Cowork logo

Claude Cowork

Use Anthropic administrator MCP with Claude Cowork

Codex logo

Codex

Use Anthropic administrator MCP with Codex

Cursor logo

Cursor

Use Anthropic administrator MCP with Cursor

VS Code logo

VS Code

Use Anthropic administrator MCP with VS Code

OpenCode logo

OpenCode

Use Anthropic administrator MCP with OpenCode

OpenClaw logo

OpenClaw

Use Anthropic administrator MCP with OpenClaw

Hermes logo

Hermes

Use Anthropic administrator MCP with Hermes

CLI logo

CLI

Use Anthropic administrator MCP with CLI

Google ADK logo

Google ADK

Use Anthropic administrator MCP with Google ADK

LangChain logo

LangChain

Use Anthropic administrator MCP with LangChain

Vercel AI SDK logo

Vercel AI SDK

Use Anthropic administrator MCP with Vercel AI SDK

Mastra AI logo

Mastra AI

Use Anthropic administrator MCP with Mastra AI

LlamaIndex logo

LlamaIndex

Use Anthropic administrator MCP with LlamaIndex

CrewAI logo

CrewAI

Use Anthropic administrator MCP with CrewAI

FAQ

Frequently asked questions

A standalone Anthropic administrator MCP server gives Grok Build a fixed set of Anthropic administrator tools tied to that one server. The Composio Tool Router lets Grok Build load tools from Anthropic administrator 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 Anthropic administrator data and credentials are handled to that standard.

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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.

Jerome Leclanche
Jerome Leclanche
Co-Founder, Ingram Technologies