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Enterprise SDK

FastMCP Java

Production-ready Model Context Protocol SDK for the JVM. Type-safe, declarative, Spring-first.

Why MCP in Java?

🏢 Data Gravity

Core business logic in banks, insurance, and e-commerce already lives in the JVM (Spring Boot). Don't rewrite it—expose it to AI.

🎯 Type-Safe Contracts

LLMs hallucinate less with strict JSON Schemas. Java's static types generate perfect, deterministic schemas at compile-time.

⚡ Real Multithreading

No GIL, no event loops. With Virtual Threads (Java 21+), handle thousands of concurrent AI agent connections effortlessly.

🔐 Security Built-in

Spring Security, OAuth2, Micrometer observability—enterprise-grade security and monitoring out of the box.

📦 Multi-Module Architecture

fastmcp-core (protocol), fastmcp-annotations (@McpTool), fastmcp-spring-boot-starter (auto-config). Use what you need.

🔄 Type Coercion Engine

Automatic JSON ↔ Java type coercion using Jackson. Define methods in Java, get MCP tools automatically.

Architecture

FastMCP Java Architecture 
@McpTool(
    name = "calculate_risk", 
    description = "Calcula el riesgo crediticio de un cliente"
)
public RiskScore calculateRisk(
    @McpParam(description = "ID del cliente") String customerId,
    @McpParam(description = "Monto solicitado") double amount
) {
    return riskService.evaluate(customerId, amount);
}

// At startup, FastMCP generates JSON Schema Draft 7 automatically
// LLM receives strict contract. Zero manual schema writing.

Enterprise Use Cases

🏦 Banking

Challenge: Legacy Spring Boot monoliths with critical transaction logic.

Solution: FastMCP exposes existing Java services to AI agents without rewriting in Python/TS. Zero latency penalty from sidecar architecture.

Result: AI-powered fraud detection accessing real-time transaction data via MCP.

🏥 Healthcare

Challenge: HIPAA compliance requires strict audit trails and PII protection.

Solution: FastMCP integrates with Spring Security and Micrometer. All tool invocations logged and traceable.

Result: AI clinical assistants with full compliance and observability.

📊 Insurance

Challenge: Complex actuarial models in Java need AI integration.

Solution: Annotate existing methods with @McpTool. Spring Boot Starter auto-discovers and exposes them.

Result: AI agents generate policy quotes using real actuarial models, not hallucinations.

🛒 E-Commerce

Challenge: High-concurrency product catalog searches for AI shopping assistants.

Solution: Virtual Threads (Java 21) handle 10,000+ concurrent MCP connections on a single instance.

Result: Real-time product recommendations without scaling costs exploding.

Plans & Pricing

FastMCP Java is included in Professional and Enterprise plans. Check complete pricing.

See Full Pricing Request Demo

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Join companies using FastMCP Java to expose critical business logic to AI agents safely.

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