spring-demo-mcp-server-sse
Spring Boot demo that exposes a simple UserService both as REST endpoints and as MCP tools over an SSE session endpoint, with JSON-RPC messages sent to a per-session messages endpoint.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
No authentication/authorization or TLS requirements are described in the README. Because this is a demo, production deployment would need explicit security controls (authn/authz, CSRF considerations for browser clients, session lifecycle protections, rate limiting, and secure headers). Dependency hygiene and secret handling cannot be verified from the provided text.
⚡ Reliability
Best When
You want a runnable reference implementation to integrate Spring Boot services with MCP tool calling using SSE as the transport.
Avoid When
You need strong enterprise security guarantees out-of-the-box (authn/authz, rate limiting, and audit controls are not described here).
Use Cases
- • Create an MCP tool backed by a Spring Boot service
- • Demonstrate SSE-based session transport for JSON-RPC style messaging
- • Prototype LLM tool calling flows (e.g., VS Code MCP extensions) backed by Java services
- • Learn end-to-end integration of REST + MCP tool invocation
Not For
- • Production-grade, internet-exposed deployments without adding authentication/authorization and transport security hardening
- • Use as a general-purpose data streaming platform without reviewing backpressure/session lifecycle behavior
- • Handling sensitive user data without explicit privacy and security controls
Interface
Authentication
The README does not mention authn/authz, API keys, OAuth, or any access control for the REST or MCP endpoints.
Pricing
Open-source demo (Apache 2.0); no pricing information provided.
Agent Metadata
Known Gotchas
- ⚠ Requests must include a sessionId for MCP tool/completion requests (documented troubleshooting).
- ⚠ SSE is session-based: agents/clients must first create a session via /mcp/sse and use the returned messages endpoint for subsequent POSTs.
Alternatives
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Scores are editorial opinions as of 2026-04-04.