How do I install Claude Chat?

Copy the stdio config for Cursor, Claude Desktop, Claude Code, or VS Code on this page. It uses the publisher's install, not a PlugMCP proxy.

Does Claude Chat need an API key?

No required environment variable is listed on this record.

What transport does Claude Chat use?

Claude Chat runs locally over stdio.

When was Claude Chat last checked?

Last checked 2026-11-09. Anthropic Claude Messages API MCP server — chat, vision, web search, extended thinking

Claude Chat MCP server

Power your agent

Add this server

Install from the publisher. Not a PlugMCP endpoint.

Run on PlugMCP

Host a copy with our keys and logs.

No packaged release in the registry yet. Follow the repository README.

RepositoryPublisher installStep-by-step: add this in Claude

Remote URL or a command on your machine? How the two installs differ

Run on PlugMCP

Host a copy with our keys and logs.

A new server you create. It is not this listing's official endpoint. Use the publisher install when you want their URL and their credentials.

Launch

Server facts

Local

Transport: stdio
Version: 0.1.0
Last checked

Tools

No tool list yet. Remote servers get one after the first health check.

FAQ

Questions

mcp-server-claude-chat

An MCP (Model Context Protocol) server for the Anthropic Claude Messages API. Built in Rust, it exposes chat, vision, live web search, and model listing as MCP tools — so any MCP client (Claude Desktop, Claude Code, etc.) can consult Claude as a tool.

Communicates via stdio using JSON-RPC 2.0, like all the other MCP servers in this collection. Structurally it mirrors mcp-server-grok-chat / mcp-server-gpt-chat, adapted to Anthropic's API shape.

Subscription vs. API credits

This server uses the Anthropic API with an API key (API credits). That is the only supported, terms-compliant way to drive Claude from a third-party tool.

A Claude Pro/Max subscription (the kind that powers Claude Code and the Claude apps) is not usable here: that authentication is licensed for Anthropic's own first-party clients, and routing it through a custom server would violate Anthropic's Consumer Terms — the "$200 of Claude usage from another service" concern you raised. So: API key it is. (If you run an Anthropic-compatible gateway, point base_url at it — see Configuration.)

Tools

Tool	Description
`chat`	Send a message to Claude. Supports multi-turn history, a system prompt, model selection, and extended thinking via `thinking_budget`.
`chat_with_vision`	Analyse an image given an image URL and a text prompt.
`chat_with_search`	Chat with live web search — Claude searches server-side and answers with cited sources.
`list_models`	List available Claude models and their IDs (cached for 5 minutes).

Note: Anthropic has no embeddings endpoint (they recommend Voyage AI), so unlike the grok/gpt servers there is no embedding tool.

chat

Name	Type	Required	Description
`prompt`	string	yes	The user message to send
`system_prompt`	string	no	System prompt to set context/behaviour
`messages`	string	no	Conversation history as a JSON array of `{role, content}` objects (roles: `user`/`assistant` only — use `system_prompt` for system instructions)
`model`	string	no	Model ID (default: server default, `claude-opus-4-8`). Call `list_models`.
`temperature`	float	no	Sampling temperature (0.0–1.0). Ignored when `thinking_budget` is set.
`max_tokens`	integer	no	Max tokens to generate (defaults to the server default)
`thinking_budget`	integer	no	Enable extended thinking with this token budget (min 1024). Reasoning is returned in a `[thinking]` block; `max_tokens` is auto-raised above the budget.

chat_with_vision

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	Vision-capable model ID (default: server default)
`temperature`	float	no	Sampling temperature (0.0–1.0)
`max_tokens`	integer	no	Max tokens to generate

chat_with_search

Name	Type	Required	Description
`prompt`	string	yes	The user message
`system_prompt`	string	no	System prompt
`model`	string	no	Model ID (default: server default)
`temperature`	float	no	Sampling temperature (0.0–1.0)
`max_tokens`	integer	no	Max tokens to generate
`max_uses`	integer	no	Max web searches Claude may run for this request (default: 5)

Web search is billed by Anthropic at $10 per 1,000 searches on top of token costs, and an org admin must enable web search in the Claude Console.

list_models

No parameters. Results cached for 5 minutes.

Prerequisites

Rust (edition 2024)
An Anthropic API key from console.anthropic.com

Setup

mkdir -p ~/.config/mcp-server-claude-chat
cp config.toml.example ~/.config/mcp-server-claude-chat/config.toml
# then edit it and set api_key

Config (~/.config/mcp-server-claude-chat/config.toml):

api_key = "sk-ant-..."

# Optional:
# base_url = "https://api.anthropic.com/v1"   # or a compatible gateway
# default_model = "claude-opus-4-8"
# default_max_tokens = 4096

The server fails fast at startup if the config is missing or api_key is empty.

Build

cargo build --release   # produces target/release/claude-chat
cargo build             # debug build
cargo run               # run in dev mode
RUST_LOG=debug cargo run
cargo test              # unit tests (response formatting, validation, message building)

MCP Configuration

Claude Desktop (~/.config/Claude/claude_desktop_config.json) or any MCP client:

{
  "mcpServers": {
    "claude-chat": {
      "command": "/media/codechap/4TB/develop/mcps/mcp-server-claude-chat/target/release/claude-chat"
    }
  }
}

Claude Code:

claude mcp add claude-chat -- /media/codechap/4TB/develop/mcps/mcp-server-claude-chat/target/release/claude-chat

Project Structure

src/
  main.rs    - entry point, config loading, stdio transport setup
  server.rs  - MCP tool definitions (chat, chat_with_vision, chat_with_search, list_models)
  api.rs     - Anthropic HTTP client, Messages/Models types, response formatter
  params.rs  - tool parameter types with serde + JSON Schema derives
  config.rs  - TOML config loading

License

MIT

Add this server

Host a copy with our keys and logs.

Server facts

Tools

Questions

How do I install Claude Chat?

Does Claude Chat need an API key?

What transport does Claude Chat use?

When was Claude Chat last checked?

Documentation

mcp-server-claude-chat

Subscription vs. API credits

Tools

chat

chat_with_vision

chat_with_search

list_models

Prerequisites

Setup

Build

MCP Configuration

Project Structure

License