mcp-server-demo

An example MCP (Model Context Protocol) server built with Spring Boot 3.4.4, exposing tool-like services via annotations. It includes a NumberService (parity check and prime detection) and a WeatherService (currently described as using random number pseudocode rather than a real third-party API). It supports MCP interaction via STDIO mode and SSE over HTTP.

Evaluated Apr 04, 2026 (17d ago)

Repo ↗ DevTools mcp spring-boot java tooling sse stdio demo

⚙ Agent Friendliness

/ 100

Can an agent use this?

🔒 Security

/ 100

Is it safe for agents?

⚡ Reliability

/ 100

Does it work consistently?

Score Breakdown

⚙ Agent Friendliness

MCP Quality

Documentation

Error Messages

Auth Simplicity

Rate Limits

🔒 Security

TLS Enforcement

Auth Strength

Scope Granularity

Dep. Hygiene

Secret Handling

No authentication/authorization is described for the MCP server endpoints. README does not mention TLS requirements for SSE. The project uses external configuration via application.yml (details not provided), so secret handling cannot be verified from the README alone.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You want a reference implementation to demonstrate MCP tool exposure patterns and basic service logic to a local MCP client.

Avoid When

You need real, reliable external integrations, fine-grained access control, or production-grade operational controls without verifying the underlying implementation.

Use Cases

• Learning/demo of building an MCP server with Spring Boot and Spring AI @Tool/@ToolParam
• Providing simple calculation tools (odd/even, prime check) to an MCP-capable client
• Demonstrating MCP transport options (STDIO and SSE) for tool invocation
• Template for extending to real external data (e.g., weather providers)

Not For

• Production-ready weather/forecast services (README indicates randomized pseudocode)
• Security-sensitive deployments without further hardening and authentication/authorization
• Environments requiring rigorous operational/SLA guarantees

Interface

REST API

GraphQL

gRPC

MCP Server

Yes ↗

SDK

Webhooks

Authentication

OAuth: No Scopes: No

README does not mention authentication/authorization for either STDIO or SSE modes.

Pricing

Free tier: No

Requires CC: No

Open-source/demo-style repository; no pricing information provided.

Agent Metadata

Pagination

none

Idempotent

False

Retry Guidance

Not documented

Known Gotchas

⚠ WeatherService is described as random pseudocode rather than a real API integration, which may produce unrealistic or non-deterministic results.
⚠ No authentication details are documented; some MCP clients or deployment scenarios may require additional transport/security configuration.

Alternatives

Other community MCP server examples in TypeScript/Python Build directly on the official MCP protocol with a minimal server framework Use a model/tool orchestration layer that supports tools without running a custom MCP server

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API endpoint ↗ Agent guide ↗ Report inaccuracy

Scores are editorial opinions as of 2026-04-04.