JustCall MCP Server for Vercel AI SDKGive Vercel AI SDK instant access to 12 tools to Create Contact, Get Account Profile, Get Call Details, and more
GDPR Free for SubscribersThe Vercel AI SDK is the TypeScript toolkit for building AI-powered applications. Connect JustCall through Vinkius and every tool is available as a typed function. ready for React Server Components, API routes, or any Node.js backend.
Ask AI about this MCP Server for Vercel AI SDK
The JustCall MCP Server for Vercel AI SDK is a standout in the Customer Support category — giving your AI agent 12 tools to work with, ready to go from day one.
Vinkius delivers Streamable HTTP and SSE to any MCP client
Geminiimport { createMCPClient } from "@ai-sdk/mcp";
import { generateText } from "ai";
import { openai } from "@ai-sdk/openai";
async function main() {
const mcpClient = await createMCPClient({
transport: {
type: "http",
// Your Vinkius token. get it at cloud.vinkius.com
url: "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp",
},
});
try {
const tools = await mcpClient.tools();
const { text } = await generateText({
model: openai("gpt-4o"),
tools,
prompt: "Using JustCall, list all available capabilities.",
});
console.log(text);
} finally {
await mcpClient.close();
}
}
main();
* Every MCP server runs on Vinkius-managed infrastructure inside AWS - a purpose-built runtime with per-request V8 isolates, Ed25519 signed audit chains, and sub-40ms cold starts optimized for native MCP execution. See our infrastructure
About JustCall MCP Server
Connect your JustCall account to any AI agent and manage phone communications through natural conversation.
The Vercel AI SDK gives every JustCall tool full TypeScript type inference, IDE autocomplete, and compile-time error checking. Connect 12 tools through Vinkius and stream results progressively to React, Svelte, or Vue components. works on Edge Functions, Cloudflare Workers, and any Node.js runtime.
What you can do
- Call Management — Make outbound calls, track call logs with duration and status
- SMS Messaging — Send text messages to contacts and track delivery
- Contact Database — List contacts, create new entries, and inspect profiles
- Call Recordings — Access call recordings with metadata
- Phone Numbers — List available and assigned phone numbers
- Agent Monitoring — Track agent performance, call volumes, and availability
The JustCall MCP Server exposes 12 tools through the Vinkius. Connect it to Vercel AI SDK in under two minutes — credentials fully managed, no infrastructure to provision, no vendor lock-in. Your configuration, your data, your control.
All 12 JustCall tools available for Vercel AI SDK
When Vercel AI SDK connects to JustCall through Vinkius, your AI agent gets direct access to every tool listed below — spanning cloud-phone, sms-messaging, call-logging, and more. Every call runs in a secure, isolated environment with full audit visibility. Beyond a simple connection, you get real-time monitoring of agent activity, enterprise governance, and optimized token usage.
Create contact on JustCall
Create a new contact
Get account profile on JustCall
Get my profile
Get call details on JustCall
Get call details
Get contact on JustCall
Get contact details
Get message details on JustCall
Get message details
List account numbers on JustCall
List JustCall numbers
List calls on JustCall
List phone calls
List contacts on JustCall
List phone contacts
List messages on JustCall
List SMS/MMS messages
List team users on JustCall
List team members
List webhooks on JustCall
List active webhooks
Send message on JustCall
Send SMS/MMS
Connect JustCall to Vercel AI SDK via MCP
Follow these steps to wire JustCall into Vercel AI SDK. The entire setup takes under two minutes — your credentials stay safe behind Vinkius.
Install dependencies
npm install @ai-sdk/mcp ai @ai-sdk/openaiReplace the token
[YOUR_TOKEN_HERE] with your Vinkius tokenRun the script
agent.ts and run with npx tsx agent.tsExplore tools
Why Use Vercel AI SDK with the JustCall MCP Server
Vercel AI SDK provides unique advantages when paired with JustCall through the Model Context Protocol.
TypeScript-first: every MCP tool gets full type inference, IDE autocomplete, and compile-time error checking out of the box
Framework-agnostic core works with Next.js, Nuxt, SvelteKit, or any Node.js runtime. same JustCall integration everywhere
Built-in streaming UI primitives let you display JustCall tool results progressively in React, Svelte, or Vue components
Edge-compatible: the AI SDK runs on Vercel Edge Functions, Cloudflare Workers, and other edge runtimes for minimal latency
JustCall + Vercel AI SDK Use Cases
Practical scenarios where Vercel AI SDK combined with the JustCall MCP Server delivers measurable value.
AI-powered web apps: build dashboards that query JustCall in real-time and stream results to the UI with zero loading states
API backends: create serverless endpoints that orchestrate JustCall tools and return structured JSON responses to any frontend
Chatbots with tool use: embed JustCall capabilities into conversational interfaces with streaming responses and tool call visibility
Internal tools: build admin panels where team members interact with JustCall through natural language queries
Example Prompts for JustCall in Vercel AI SDK
Ready-to-use prompts you can give your Vercel AI SDK agent to start working with JustCall immediately.
"Show today's call log and send a follow-up SMS to the last caller."
"List all agents, their call volumes, and available phone numbers."
"Show call recordings from this week and the contact database."
Troubleshooting JustCall MCP Server with Vercel AI SDK
Common issues when connecting JustCall to Vercel AI SDK through Vinkius, and how to resolve them.
createMCPClient is not a function
npm install @ai-sdk/mcpJustCall + Vercel AI SDK FAQ
Common questions about integrating JustCall MCP Server with Vercel AI SDK.
How does the Vercel AI SDK connect to MCP servers?
createMCPClient from @ai-sdk/mcp and pass the server URL. The SDK discovers all tools and provides typed TypeScript interfaces for each one.Can I use MCP tools in Edge Functions?
Does it support streaming tool results?
useChat and streamText that handle tool calls and display results progressively in the UI.Explore More MCP Servers
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