Bring Digital Fax
to Claude Desktop
Learn how to connect Fax.Plus to Claude Desktop and start using 8 AI agent tools in minutes. Fully managed, enterprise secure, and ready to use without writing a single line of code.
What is the Fax.Plus MCP Server?
Connect your Fax.Plus account to any AI agent and take full control of your digital telephony and fax workflows through natural conversation.
What you can do
- Fax Orchestration — List and monitor all incoming and outgoing faxes and retrieve detailed status updates and delivery metadata programmatically
- Automated Sending — Programmatically send new faxes to any international number in E.164 format and add transmission comments directly through your agent
- Telephony Management — Search for and list available fax numbers across various countries and area codes to expand your business presence
- Outbox Oversight — Track active fax jobs and programmatically cancel pending transmissions before they are completed to save resources
- Account Visibility — Retrieve complete profile information, assigned numbers, and team member directories to maintain high-fidelity oversight
How it works
1. Subscribe to this server
2. Retrieve your Personal Access Token from Fax.Plus (Settings > Integrations)
3. Start managing your digital faxing from Claude, Cursor, or any MCP client
No more manual status checking or complex form navigation in the fax dashboard. Your AI acts as your dedicated digital fax and telephony coordinator.
Who is this for?
- Operations Managers — instantly check fax delivery statuses and manage telephony infrastructure using natural language commands
- Legal & Admin Teams — automate the sending of critical documents and track receipt without leaving your workspace
- Business Development — quickly find and assign new international fax numbers through simple AI queries
Built-in capabilities (8)
Requires the unique outbox job ID. Cancel a pending fax job
Use this to determine the current identity and account context. Retrieve current Fax.Plus account details
Includes information about the recipient, sender, and delivery status. Get details for a specific fax
Includes the number itself and its activation status. List all assigned fax numbers
Use this to monitor communication history and obtain fax IDs. List received and sent faxes
Useful for monitoring ongoing transmissions. List active or pending fax jobs
Useful for expanding telephony infrastructure. Search for available fax numbers
Requires the recipient phone number in E.164 format and allows for optional comments. Files are typically managed via the Fax.Plus outbox logic. Send a new digital fax
Why Claude Desktop?
Claude Desktop is the definitive way to connect Fax.Plus to your AI workflow. Add Vinkius Edge URL to your config, restart the app, and Claude immediately exposes all 8 tools in the chat interface. ask a question, Claude calls the right tool, and you see the answer. Zero code, zero context switching.
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Claude Desktop is the reference MCP client. it was designed alongside the protocol itself, ensuring the most complete and stable MCP implementation available
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Zero-code configuration: add a server URL to a JSON file and Claude instantly discovers and exposes all available tools in the chat interface
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Claude's extended thinking capability lets it reason through multi-step tool usage, chaining multiple API calls to answer complex questions
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Enterprise-grade security with local config storage. your tokens never leave your machine, and connections go directly to Vinkius Edge network
Fax.Plus in Claude Desktop
Fax.Plus and 3,400+ other MCP servers. One platform. One governance layer.
Teams that connect Fax.Plus to Claude Desktop 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.
Raw MCP | Vinkius | |
|---|---|---|
| Server catalog | Find and host yourself | 3,400+ 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 |
Why teams choose Vinkius for Fax.Plus in Claude Desktop
The Fax.Plus 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 8 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Claude Desktop 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.
* 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
How Vinkius secures
Fax.Plus for Claude Desktop
Every tool call from Claude Desktop to the Fax.Plus MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
How do I find my Personal Access Token?
Log in to your Fax.Plus dashboard, navigate to Settings > Integrations, and generate a new token under the Personal Access Token section.
What is the correct format for fax numbers?
Fax numbers must be in international E.164 format, including the plus sign and country code (e.g., +1234567890).
Can I cancel a fax before it is sent?
Yes! Use the cancel_outbox_job tool with the unique outbox job ID to stop a transmission that is still pending or sending.
How does Claude Desktop discover MCP tools?
When Claude Desktop starts, it reads the claude_desktop_config.json file and connects to each configured MCP server. It calls the tools/list endpoint to fetch the schema for every available tool, then surfaces them as clickable options in the chat interface via the 🔌 icon.
What happens if the MCP server is temporarily unavailable?
Claude Desktop handles disconnections gracefully. if the server is unreachable at startup, the tools simply won't appear. Once the server becomes available again, restarting Claude Desktop will re-establish the connection. There is no timeout penalty or error loop.
Can I connect multiple MCP servers simultaneously?
Yes. You can add as many servers as you need in the mcpServers section of the config file. Each server appears as a separate tool provider, and Claude can use tools from multiple servers in a single conversation turn.
Is there a limit on the number of tools per server?
Claude Desktop can handle hundreds of tools per server. However, for optimal LLM performance, Vinkius servers are designed to expose focused, well-documented tool sets rather than overwhelming the model with too many options.
Does Claude Desktop support Streamable HTTP transport?
Yes. Claude Desktop supports both SSE (Server-Sent Events) and the newer Streamable HTTP transport that Vinkius uses. Simply provide the server URL. Claude auto-negotiates the transport protocol.
Server not appearing after restart
Ensure the JSON is valid (no trailing commas). Check the file path: ~/Library/Application Support/Claude/claude_desktop_config.json (macOS) or %APPDATA%\\Claude\\ (Windows).
Authentication error
Verify your Vinkius token is correct. Go to cloud.vinkius.com to regenerate it if needed.
Tools not showing in chat
Click the 🔌 icon at the bottom of the chat input. If it shows 0 tools, the server may still be connecting. wait a few seconds.