MCP server for the xAI Grok API β chat, vision, search, and embeddings
Copy the AI prompt to install this server into Claude Code, Cursor, or another agent β or use 1-click editor setup below.
π‘ Paste the JSON block into your client's configuration file under mcpServers, then restart the application.
An MCP (Model Context Protocol) server for the xAI Grok API. Built in Rust, exposes chat completions, vision, web/X search, embeddings, and model listing as MCP tools.
Communicates via stdio using JSON-RPC 2.0, like all MCP servers.
| Tool | Description |
|---|---|
chat | Send a chat completion request to Grok with optional multi-turn history, system prompt, structured output (JSON schema), model selection, and multi-agent research |
chat_with_vision | Analyse an image with Grok's vision capabilities given an image URL and text prompt |
chat_with_search | Chat with Grok using live web search and/or X (Twitter) search to ground responses |
embedding | Generate text embeddings using Grok's embedding model |
list_models | List all available Grok models and their IDs (cached for 5 minutes) |
Send a chat completion request. Supports multi-turn conversations via a JSON message history array, system prompts, structured output via JSON schema, temperature control, model selection, and multi-agent research.
When using a multi-agent model (any model ID containing multi-agent), the request is automatically routed through the Responses API. The multi-agent model dispatches your query to multiple agents that research in parallel, then synthesizes their findings. Use reasoning_effort to control agent count. Call the list_models tool to see which multi-agent models are currently available.
Parameters:
| Name | Type | Required | Description |
|---|---|---|---|
prompt | string | yes | The user message to send |
model | string | no | Model ID (default: grok-4.3). Call list_models for the current set. |
system_prompt | string | no | System prompt to set context |
messages | string | no | Full conversation history as JSON array of {role, content} objects |
temperature | float | no | Sampling temperature (0.0 - 2.0) |
max_tokens | integer | no | Maximum tokens to generate |
response_schema | string | no | JSON schema string to enforce structured output |
reasoning_effort | string | no | On grok-4.3: low/medium/high controls native reasoning depth. On multi-agent models: low/medium = 4 agents, high/xhigh = 16 agents (xhigh is multi-agent-only). |
Analyse an image using Grok's vision capabilities.
Parameters:
| Name | Type | Required | Description |
|---|---|---|---|
prompt | string | yes | Text prompt describing what to analyse |
image_url | string | yes | URL of the image (must be http:// or https://) |
model | string | no | Model ID (default: grok-4.3). Must be a vision-capable model. Call list_models for the current set. |
detail | string | no | Image detail level: low or high (default: high) |
temperature | float | no | Sampling temperature (0.0 - 2.0) |
max_tokens | integer | no | Maximum tokens to generate |
Chat with Grok using live web search and/or X (Twitter) search. The model automatically searches the internet to ground its response.
Parameters:
| Name | Type | Required | Description |
|---|---|---|---|
prompt | string | yes | The user message to send |
search_type | string | no | Search type: web, x, or both (default: both) |
model | string | no | Model ID (default: grok-4.3). Call list_models for the current set. |
system_prompt | string | no | System prompt to set context |
temperature | float | no | Sampling temperature (0.0 - 2.0) |
max_tokens | integer | no | Maximum tokens to generate |
reasoning_effort | string | no | On grok-4.3: low/medium/high controls native reasoning depth. On multi-agent models: low/medium = 4 agents, high/xhigh = 16 agents (xhigh is multi-agent-only). |
Generate text embeddings.
Parameters:
| Name | Type | Required | Description |
|---|---|---|---|
input | string | yes | Text to embed as JSON: a single string or array of strings |
model | string | no | Embedding model to use (default: grok-2-text-embedding) |
List all available Grok models. No parameters. Results are cached for 5 minutes.
Create the config file:
Create ~/.config/mcp-server-grok-chat/config.toml:
This produces target/release/grok-chat.
For development:
Add to your Claude Desktop config (~/.config/Claude/claude_desktop_config.json):
MIT
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