AI call assistant & voice API SDK for Node.js: official Telnyx library for AI voice agents, calls, SMS and phone numbers.
Setup
Choose your client, copy the config, then fill in any required environment variables.
claude mcp add telnyx --env TELNYX_API_KEY='<TELNYX_API_KEY>' -- npx -y telnyx~/.codex/config.toml
[mcp_servers.telnyx]
command = "npx"
args = ["-y", "telnyx"]
env = { TELNYX_API_KEY = "<TELNYX_API_KEY>" }
# codex mcp add telnyx --env TELNYX_API_KEY='<TELNYX_API_KEY>' -- npx -y telnyx~/.cursor/mcp.json
{
"mcpServers": {
"telnyx": {
"command": "npx",
"args": [
"-y",
"telnyx"
],
"env": {
"TELNYX_API_KEY": "<TELNYX_API_KEY>"
}
}
}
}.vscode/mcp.json
{
"servers": {
"telnyx": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"telnyx"
],
"env": {
"TELNYX_API_KEY": "<TELNYX_API_KEY>"
}
}
}
}~/.gemini/settings.json
{
"mcpServers": {
"telnyx": {
"command": "npx",
"args": [
"-y",
"telnyx"
],
"env": {
"TELNYX_API_KEY": "<TELNYX_API_KEY>"
}
}
}
}claude_desktop_config.json
{
"mcpServers": {
"telnyx": {
"command": "npx",
"args": [
"-y",
"telnyx"
],
"env": {
"TELNYX_API_KEY": "<TELNYX_API_KEY>"
}
}
}
}.trae/mcp.json
{
"mcpServers": {
"telnyx": {
"command": "npx",
"args": [
"-y",
"telnyx"
],
"env": {
"TELNYX_API_KEY": "<TELNYX_API_KEY>"
}
}
}
}Environment variables
TELNYX_API_KEY
Replace the placeholders with your own credentials and keep them out of version control.