Compatible with every major AI agent and IDE
What is the Syncthing MCP Server?
Connect your Syncthing instance to any AI agent and take full control of your private file synchronization infrastructure through natural conversation.
What you can do
- Device Monitoring — List all configured devices and check their real-time connection status and metadata.
- Folder Management — Query all synchronized folders, check their database status, and monitor completion percentages.
- System Control — Pause or resume synchronization for specific devices, restart the Syncthing process, or check if a configuration change requires a restart.
- Directory Browsing — Remotely list directories matching specific paths to verify file structures across your sync network.
- Configuration & Stats — Fetch or update the entire system configuration and retrieve detailed statistics for folders and devices.
How it works
- Subscribe to this server
- Enter your Syncthing Web UI URL and API Key
- Start managing your P2P sync network from Claude, Cursor, or any MCP-compatible client
Who is this for?
- Sysadmins & DevOps — monitor distributed sync nodes and manage configurations without leaving the terminal or chat interface.
- Power Users — check the health of home lab backups and trigger folder scans or device resumes via voice or text.
- Data Managers — verify that specific files have synced across the network by browsing remote directories through the AI.
Built-in capabilities (28)
Get entire configuration
Get folder/device completion status
Get detailed data about a specific file
Get ignore patterns for a folder
). Get folder database status
Get specific device configuration
Get device statistics
Get all configured devices
Poll for events
Get specific folder configuration
Get folder statistics
Get all configured folders
Returns {"status": "OK"}. Does not require authentication. Simple health check
Get a strong random alphanumeric string
Check if restart is required
Request immediate scan of a folder
Replace entire configuration
Set ignore patterns for a folder
List directories matching a path
Get configured devices and connection status
If device ID is omitted, affects all devices. Pause devices
Optionally reset only a specific folder. Reset index database
Restart Syncthing
If device ID is omitted, affects all devices. Resume devices
Shutdown Syncthing
). Get current system status and resource usage
Get Syncthing version
Verify and format a device ID
Why Mastra AI?
Mastra's agent abstraction provides a clean separation between LLM logic and Syncthing tool infrastructure. Connect 28 tools through Vinkius and use Mastra's built-in workflow engine to chain tool calls with conditional logic, retries, and parallel execution. deployable to any Node.js host in one command.
- —
Mastra's agent abstraction provides a clean separation between LLM logic and tool infrastructure. add Syncthing without touching business code
- —
Built-in workflow engine chains MCP tool calls with conditional logic, retries, and parallel execution for complex automation
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TypeScript-native: full type inference for every Syncthing tool response with IDE autocomplete and compile-time checks
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One-command deployment to any Node.js host. Vercel, Railway, Fly.io, or your own infrastructure
Syncthing in Mastra AI
Syncthing and 4,000+ other MCP servers. One platform. One governance layer.
Teams that connect Syncthing to Mastra AI 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 | 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 |
Why teams choose Vinkius for Syncthing in Mastra AI
The Syncthing 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 28 tools execute in hardened sandboxes optimized for native MCP execution.
Your AI agents in Mastra AI 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
Syncthing for Mastra AI
Every tool call from Mastra AI to the Syncthing MCP Server is protected by DLP redaction, cryptographic audit chains, V8 sandbox isolation, kill switch, and financial circuit breakers.
Frequently asked questions
How can I check if Syncthing needs a restart after I changed the configuration?
You can use the get_restart_required tool. It will return a boolean indicating if a restart is pending due to configuration changes.
Is it possible to pause synchronization for a specific device using the AI?
Yes. Use the system_pause tool and provide the specific Device ID. If you omit the ID, it will pause all devices.
Can I see which files are currently being synchronized?
You can use get_db_status or get_db_completion for a specific folder to see the synchronization progress and state of the files in that directory.
How does Mastra AI connect to MCP servers?
Create an MCPClient with the server URL and pass it to your agent. Mastra discovers all tools and makes them available with full TypeScript types.
Can Mastra agents use tools from multiple servers?
Yes. Pass multiple MCP clients to the agent constructor. Mastra merges all tool schemas and the agent can call any tool from any server.
Does Mastra support workflow orchestration?
Yes. Mastra has a built-in workflow engine that lets you chain MCP tool calls with branching logic, error handling, and parallel execution.
createMCPClient not exported
Install: npm install @mastra/mcp
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