Fastmcp4j MCP Server

If you already use Fastmcp4j, the fastmcp4j mcp server is the piece that lets your assistant work with it directly. @McpTool(description = "Summarize text") public String summarize(@McpParam(description = "Text") String text) { return "Summary: " + text.substring(0, Math.min(100, text.length())); }.

Installation

Setup follows the usual MCP pattern — install or clone the server, register it in your client's configuration file, restart the client.

Available tools

The toolset is worth reading before you wire it up, because it tells you what the integration is really for:

• toolName — Target specific tool name, or "*" for all tools. Empty = inferred from method name
• order — Execution priority (lower = first). Default: 0
• Pre-hook — Map<String, Object> arguments — Tool input arguments
• Post-hook — Map<String, Object> arguments, Object result — Input + output
• Annotation — Tools You Get
• Lightweight — The Lightweight tool exposed by this server

Worth knowing first

• It runs with your machine's permissions. That is convenient and also the reason to think about what you point it at before you approve a tool call.
• Keep per-call confirmation enabled while you learn its behaviour; it is the cheapest safeguard you have.

Where it fits

Plenty of developer tooling servers cover similar ground. The differences that matter in practice are scope of access and how much setup stands between you and a working tool call. Fastmcp4j's toolset — toolName, order, Pre-hook and 3 more — is a fair guide to whether it matches your workflow. It is maintained by terseprompts; worth a glance at recent repository activity before you build anything load-bearing on it.

We check each listing at SyncDev against the project's documentation before it goes live — if something here drifts out of date, it is a bug worth reporting.