Model Context Protocol (MCP) server for the CallRail REST API v3: 57 tools for calls, leads, form submissions, trackers, tags and agency reporting, usable from Claude Code, Claude Desktop, Cursor or any MCP client.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add callrail --env CALLRAIL_API_KEY='<CALLRAIL_API_KEY>' -- uvx callrail-mcp~/.codex/config.toml
[mcp_servers.callrail]
command = "uvx"
args = ["callrail-mcp"]
env = { CALLRAIL_API_KEY = "<CALLRAIL_API_KEY>" }
# codex mcp add callrail --env CALLRAIL_API_KEY='<CALLRAIL_API_KEY>' -- uvx callrail-mcp~/.cursor/mcp.json
{
"mcpServers": {
"callrail": {
"command": "uvx",
"args": [
"callrail-mcp"
],
"env": {
"CALLRAIL_API_KEY": "<CALLRAIL_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"callrail": {
"type": "stdio",
"command": "uvx",
"args": [
"callrail-mcp"
],
"env": {
"CALLRAIL_API_KEY": "<CALLRAIL_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"callrail": {
"command": "uvx",
"args": [
"callrail-mcp"
],
"env": {
"CALLRAIL_API_KEY": "<CALLRAIL_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"callrail": {
"command": "uvx",
"args": [
"callrail-mcp"
],
"env": {
"CALLRAIL_API_KEY": "<CALLRAIL_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"callrail": {
"command": "uvx",
"args": [
"callrail-mcp"
],
"env": {
"CALLRAIL_API_KEY": "<CALLRAIL_API_KEY>"
}
}
}
}Environment variables
CALLRAIL_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.