LlamaIndexFramework

JustCall MCP Server

Bring Cloud Phone
to LlamaIndex

Name: JustCall MCP Server
Price: 29 USD
Availability: InStock
Rating: 5.0 (1 reviews)
Author: Vinkius

Learn how to connect JustCall to LlamaIndex and start using 12 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.

GDPR Free for Subscribers

Create ContactGet Account ProfileGet Call DetailsGet ContactGet Message DetailsList Account NumbersList CallsList ContactsList MessagesList Team UsersList WebhooksSend Message

Unlock for AI Agents

Ask AI about this MCP Server ChatGPT Claude Perplexity

Compatible with every major AI agent and IDE

Claude

ChatGPT

Cursor

Gemini

Windsurf

VS Code

JetBrains

Vercel

+ other MCP clients

What is the JustCall MCP Server?

Connect your JustCall account to any AI agent and manage phone communications through natural conversation.

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

How it works

Subscribe to this server
Enter your JustCall API Key and API Secret
Start managing calls from Claude, Cursor, or any MCP-compatible client

Who is this for?

Sales Teams — make calls, send follow-up SMS, and track communication history
Support Teams — manage call queues and monitor agent performance
Operations — automate phone outreach and SMS campaigns

Built-in capabilities (12)

create_contact

Create a new contact

get_account_profile

Get my profile

get_call_details

Get call details

get_contact

Get contact details

get_message_details

Get message details

list_account_numbers

List JustCall numbers

list_calls

List phone calls

list_contacts

List phone contacts

list_messages

List SMS/MMS messages

list_team_users

List team members

list_webhooks

List active webhooks

send_message

Send SMS/MMS

Why LlamaIndex?

LlamaIndex agents combine JustCall tool responses with indexed documents for comprehensive, grounded answers. Connect 12 tools through Vinkius and query live data alongside vector stores and SQL databases in a single turn. ideal for hybrid search, data enrichment, and analytical workflows.

—
Data-first architecture: LlamaIndex agents combine JustCall tool responses with indexed documents for comprehensive, grounded answers
—
Query pipeline framework lets you chain JustCall tool calls with transformations, filters, and re-rankers in a typed pipeline
—
Multi-source reasoning: agents can query JustCall, a vector store, and a SQL database in a single turn and synthesize results
—
Observability integrations show exactly what JustCall tools were called, what data was returned, and how it influenced the final answer

See it in action

JustCall in LlamaIndex

AI Agent→Vinkius

High Security·Kill Switch·Plug and Play

Why Vinkius

JustCall and 4,000+ other MCP servers. One platform. One governance layer.

Teams that connect JustCall to LlamaIndex through Vinkius don't need to source, host, or maintain individual MCP servers. Every tool call runs inside a hardened runtime with credential isolation, DLP, and a signed audit chain.

4,000+MCP Servers ready

<40msCold start

60%Token savings

	Raw MCP	Vinkius
Server catalog	Find and host yourself	4,000+ managed
Infrastructure	Self-hosted	Sandboxed V8 isolates
Credential handling	Plaintext in config	Vault + runtime injection
Data loss prevention	None	Configurable DLP policies
Kill switch	None	Global instant shutdown
Financial circuit breakers	None	Per-server limits + alerts
Audit trail	None	Ed25519 signed logs
SIEM log streaming	None	Splunk, Datadog, Webhook
Honeytokens	None	Canary alerts on leak
Custom domains	Not applicable	DNS challenge verified
GDPR compliance	Manual effort	Automated purge + export

Unlock for AI Agents View step-by-step setup guide for LlamaIndex →

Enterprise Security

Why teams choose Vinkius for JustCall in LlamaIndex

The JustCall 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. All 12 tools execute in hardened sandboxes optimized for native MCP execution.

Your AI agents in LlamaIndex only access the data you authorize, with DLP that blocks sensitive information from ever reaching the model, kill switch for instant shutdown, and up to 60% token savings. Enterprise-grade infrastructure, zero maintenance.

Unlock for AI Agents View full JustCall details →

Fully ManagedVinkius Servers

60%Token savings

High SecurityEnterprise-grade

IAMAccess control

EU AI ActCompliant

DLPData protection

V8 IsolateSandboxed

Ed25519Audit chain

<40msKill switch

Stream every event to Splunk, Datadog, or your own webhook in real-time

* 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

The Vinkius Advantage

How Vinkius secures
JustCall for LlamaIndex

Every tool call from LlamaIndex to the JustCall MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.

< 40msCold start

Ed25519Signed audit chain

60%Token savings

FAQ

Frequently asked questions

Can I make calls and send SMS through the AI agent?

Yes. Make outbound calls with destination number and track status. Send SMS messages to any contact with delivery tracking. Use contact management tools to find recipient numbers.

Does JustCall require two credentials?

Yes. JustCall uses an API Key and API Secret pair for authentication. Both are sent as Bearer credentials against api.justcall.io/v1.

Can I listen to call recordings and track agent performance?

Yes. Access call recordings with duration and metadata. Monitor agent call volumes, average handle time, and availability status.

How does LlamaIndex connect to MCP servers?

Use the MCP client adapter to create a connection. LlamaIndex discovers all tools and wraps them as query engine tools compatible with any LlamaIndex agent.

Can I combine MCP tools with vector stores?

Yes. LlamaIndex agents can query JustCall tools and vector store indexes in the same turn, combining real-time and embedded data for grounded responses.

Does LlamaIndex support async MCP calls?

Yes. LlamaIndex's async agent framework supports concurrent MCP tool calls for high-throughput data processing pipelines.

BasicMCPClient not found

Install: pip install llama-index-tools-mcp

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