CallChatSyn MCP MCP server

This MCP server enables AI agents to interact with the CallChatSyn answering bot and booking calendar. It allows agents to answer customer FAQs, list available appointment slots, and book appointments on behalf of small businesses, integrating seamlessly with tools like Cal.com.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-06Operated by CallChatSyn

MCP endpoint (Streamable HTTP)

https://callchatsyn.com/api/mcp

Vendor documentation

What you can do with it

Answer customer questions using business FAQs
List open appointment times from calendar
Book appointments for customers

Tools advertised by the last live check:

answer_customer_question
list_open_times
book_appointment

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http callchatsyn-mcp https://callchatsyn.com/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add callchatsyn-mcp --url https://callchatsyn.com/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable callchatsyn-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "callchatsyn-mcp": {
      "url": "https://callchatsyn.com/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "callchatsyn-mcp": {
      "type": "streamableHttp",
      "url": "https://callchatsyn.com/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start callchatsyn-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "callchatsyn-mcp": {
      "type": "http",
      "url": "https://callchatsyn.com/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http callchatsyn-mcp https://callchatsyn.com/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "callchatsyn-mcp": {
      "url": "https://callchatsyn.com/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "callchatsyn-mcp": {
      "serverUrl": "https://callchatsyn.com/api/mcp"
    }
  }
}

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