JustCall MCP. Manage Calls, Contacts, and Texts from Your Agent
JustCall lets you manage all your business communications—calls, texts, and contacts—from any AI agent. It connects to a full cloud phone system that automatically logs every interaction into a searchable CRM structure. Your agent can make outbound calls, send follow-up SMS messages, look up contact history, and track which agents are performing best, all without you touching a dashboard.
Give Claude and any AI agent real-world access
The MCP creates structured entries for people into your main contact database.
It retrieves core information about the connected JustCall account profile.
The MCP pulls detailed records for a single phone call event.
You can look up and retrieve all stored details about any specific contact.
It provides the full content and metadata for a single text or MMS exchange.
The system pulls a complete log of all phone calls made or received within your account.
It generates a list of every contact stored in the database.
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What AI agents can do with JustCall: 12 Communication Tools
Use these tools in your prompts to let your AI client perform specific actions like creating contacts or listing call logs.
Make your AI actually useful.
Add this MCP to Claude, Cursor, or Windsurf and your AI stops guessing. It gets real tools to look things up, take action, and handle the stuff you keep doing by hand.
Start using JustCall MCPCreate Contact
This tool adds a brand new person's entry to your system of records.
Get Account Profile
It pulls the core administrative details about the connected JustCall account itself.
Get Call Details
The MCP retrieves every specific piece of information related to a single phone call.
Get Contact
This tool fetches all the stored data for one specified contact.
Get Message Details
It pulls out the full content and metadata for a specific SMS or MMS message.
List Calls
The MCP generates a comprehensive list of all phone calls logged in the account history.
List Contacts
This tool returns an exhaustive list of every contact saved to your system.
List Messages
It compiles a detailed report listing all sent and received text messages.
List Account Numbers
You can get a full list of every assigned phone number available to your team.
List Team Users
The MCP generates a roster listing all current users and team members in the account.
List Webhooks
It fetches a list of active webhooks set up within the JustCall platform.
Send Message
This tool sends text messages or MMS to specified phone numbers.
Security and governance baked right in.
Pick your AI client below to get set up. Just create a Vinkius account, subscribe, and you're instantly up and running. We handle the entire backend infrastructure, delivering out-of-the-box support for HTTPS Streamable, SSE, and OAuth2—zero messy routing required.
Choose How to Get Started
Build a custom MCP for your own tools, or connect a ready-made integration from our catalog.
Build Your Own
Turn any API into an MCP. Import a spec, define Agent Skills, or deploy with MCPFusion.
- Import from OpenAPI, Swagger, or YAML specs
- Create Agent Skills with progressive disclosure
- Deploy to edge with MCPFusion framework
- Built in DLP, auth, and compliance on each call
- Real time usage dashboard and cost metering
- Publish to catalog or keep private
Make Your AI Do More
Start with JustCall, then connect any of our 5,200+ other servers whenever your AI needs more. One click, no limits.
- Use this MCP plus 5,200+ others, all in one place
- Add new capabilities to your AI anytime you want
- Connections are secured and governed automatically
- Track usage and costs across all your servers
- Works with Claude, ChatGPT, Cursor, and more
- New servers added to the catalog weekly
Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by JustCall. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.
VINKIUS CLOUD
Cloud Hosted
Managed infra
V8 Isolated
Sandboxed per request
Zero-Trust Proxy
No stored credentials
DLP Enforced
Policy on each call
GDPR Compliant
EU data residency
Token Compression
~60% cost reduction
The headache of piecing together customer context
Think about a typical afternoon: You open your CRM tab to find Jane Doe's profile. Then you have to click over to the separate calling dashboard to see if she called yesterday. After that, you switch tabs again to check the SMS log for any follow-ups. It’s three different systems, five clicks minimum, and every piece of data is siloed.
With this MCP, your agent handles it all in natural conversation. You just tell it: 'What happened with Jane Doe last week?' The system runs multiple checks—it retrieves the contact details, pulls call records, and reviews message history—and presents you a single narrative summary. It's instant context.
JustCall MCP: Actions that save minutes, hours.
No more manually updating the CRM after every call or text exchange. You don't have to copy a number from one place and paste it into another just to send a message; your agent handles both identifying the contact via `get_contact` and sending the follow-up using `send_message`. The data flows automatically.
The process shifts entirely. Instead of spending time clicking through dashboards, you spend time talking to your AI client. You get immediate answers and actionable outputs—the system does the legwork.
What JustCall MCP does for your AI
This MCP lets your AI client manage your entire communication workflow through natural conversation. You're not limited to just logging data; you use the tools to act on it. Need to follow up with a lead? Your agent can look up the contact using its details, send an immediate text message, and then log that activity against their profile, all in one go.
The system tracks everything, from call duration and status to who made the connection and when. Because Vinkius hosts this connector, you get full access to every toolset—from listing assigned phone numbers to pulling detailed records of historical calls and recordings. This means your agent doesn't just read data; it uses that data to complete complex tasks, like summarizing a call outcome and automatically updating the contact record.
019dd10f-d3ce-70d1-951d-46123db57027 How to set up JustCall MCP
The bottom line is: you tell your AI client what communication task needs doing, and it handles all the complex API calls behind the scenes to get it done.
First, you subscribe to this MCP on Vinkius and provide your JustCall API Key and Secret.
Next, you instruct your AI client what task needs doing—for instance, 'Check the call log for yesterday's missed calls and send a follow-up message to the last number that called.'
Finally, the MCP executes the necessary tools, pulling the data and performing actions on behalf of your agent.
Who uses JustCall MCP
Sales managers who hate manually pulling call logs into spreadsheets. Support leads tired of switching between CRM tabs just to track a client's history. Operations staff running campaigns that need reliable, automated SMS follow-ups.
They use the MCP to automatically check call details and send targeted messages immediately after a meeting to keep momentum going.
The lead uses this to get contact profiles and list historical calls for agents, giving them instant access to customer context during live chats or calls.
They run SMS/MMS campaigns by listing contacts, verifying numbers, and ensuring message delivery tracking is accurate for compliance purposes.
Benefits of connecting JustCall MCP
Instantly follow up with clients. Instead of manually checking call logs, your agent can review the details for a specific call, then use the send_message tool to send a targeted text right away.
Maintain clean records automatically. The MCP ensures that every interaction—whether it's a new contact entry via create_contact or a status update on a phone number via list_account_numbers—is logged instantly.
Improve agent accountability. You can use the tools to list team users and access call recordings, giving you clear metrics on who is available and how often they are using the system.
Streamline prospecting efforts. Your agent can generate a full contact roster by calling list_contacts and then bulk-send messages or schedule calls for follow-up campaigns.
Reduce data silos. You don't have to jump between your phone system and your CRM. The MCP lets your AI client pull all the necessary call details and message specifics in one single prompt.
JustCall MCP use cases
Following up after a demo
A salesperson needs to send a follow-up text immediately after a discovery call. They ask their agent to check the get_call_details for the last conversation, and then use the send_message tool to write and deliver a personalized message recommending resources.
Onboarding new team members
A support manager needs to verify that all agents have numbers available. They ask their agent to call list_account_numbers, confirming not only the assigned lines but also which ones are currently free for immediate use.
Analyzing a competitor's lead
A sales director needs background on a prospect. The agent calls get_contact to pull all available history, reviews previous call details, and summarizes the last few interactions into a single brief for the team.
Auditing communication records
An operations manager needs to see who talked to whom this month. They instruct their agent to use list_calls and then filter that massive dataset by date range, giving them a clear accountability report.
JustCall MCP tradeoffs
What to watch out for, and the recommended way to handle each one.
Assuming the data is always ready.
A user asks their agent to 'Tell me about Ana,' without specifying if they mean her contact record or a call she made last week. The agent gets vague, unhelpful data because it doesn't know which tool to use.
Always be specific with your prompts. If you need her history, ask the agent to first run get_contact and then request the relevant records using list_calls. This forces a precise, two-step process.
Trying to manually track everything.
A user is forced to switch between their phone system dashboard, their CRM, and an email client just to piece together a single customer's story. It’s slow, tedious clicking.
Let the MCP handle it. Tell your agent to combine list_calls, get_message_details, and get_contact into one summary report. You get the full context in plain text.
Ignoring team capacity.
A manager plans an outreach campaign without knowing if their agents have enough available lines or are already overwhelmed, leading to failed calls and frustrated teams.
Before running a big campaign, use list_team_users and check the availability metrics. This gives you real-time data on capacity before you hit send.
When to use JustCall MCP
Use this MCP if your primary pain point is stitching together communication context (calls, texts, contacts) across different platforms. You need an agent that can perform complex actions like 'get the last call details, then create a follow-up task, and send a message.' This connector is built for action—it's not just a database viewer. Don't use this if you are trying to integrate with non-communication data sources, such as internal inventory management or financial ledger records; for that, you need an MCP designed for structured business processes. If your goal is simply reading reports without taking any action, some simpler read-only connectors might suffice, but if you want the AI to do the work, this is it.
Frequently asked questions about JustCall MCP
How do I use JustCall MCP to check call logs? +
You ask your agent to list calls using list_calls. The agent pulls a comprehensive log of every inbound and outbound call, including duration and status.
Can the JustCall MCP send messages automatically? +
Yes. Your agent can use the send_message tool to text any contact listed in your database, making follow-ups immediate and trackable.
Does JustCall MCP help with team performance tracking? +
The system allows you to list team users and review call logs. This helps managers monitor agent availability and overall call volume metrics easily.
How do I get a specific contact's full history using JustCall MCP? +
You use get_contact first to pull the profile, then you can ask your agent to combine that data with list_calls and list_messages for a complete view.
Is JustCall MCP limited only to phone numbers? +
No. While it manages calling features, the MCP also handles SMS messaging through tools like send_message and processes contact data using create_contact.