mcp-spring-ai-mcp-server

Provides a demo Spring AI MCP server using Spring Boot (WebFlux). It exposes an SSE endpoint for streaming MCP communication (e.g., /sse) and an HTTP POST message endpoint (e.g., /mcp/message) to send JSON-RPC requests such as tools/list and notifications/initialized, returning MCP tool definitions and messages over SSE.

Evaluated Apr 04, 2026 (16d ago)

Repo ↗ DevTools mcp spring-ai spring-boot webflux sse json-rpc tooling developer-tools

⚙ 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

The provided materials do not mention authentication/authorization or TLS requirements. Dependency hygiene is inferred from the visible use of Spring Boot/Spring AI starters and Lombok without explicit security advisories; no SBOM/CVE or hardening guidance is included.

⚡ Reliability

Uptime/SLA

Version Stability

Breaking Changes

Error Recovery

Best When

You want a lightweight local or internal demo/integration of an MCP server transport compatible with Spring AI’s WebFlux MCP starter.

Avoid When

You need enterprise-grade security (authn/authz, TLS termination requirements, rate limiting) or formal reliability guarantees; the provided README does not document these.

Use Cases

• Running a local MCP server for AI agents to discover and invoke tools
• Demonstrating MCP communication patterns (SSE transport + JSON-RPC over HTTP)
• Developing Spring-based MCP integrations for custom tool endpoints

Not For

• Production deployments requiring strong auth, traffic controls, and operational assurances (not evidenced by the provided materials)
• Use cases needing a documented REST/GraphQL/SDK surface beyond the MCP transport
• Environments where exposing localhost endpoints without authentication is unacceptable

Interface

REST API

GraphQL

gRPC

MCP Server

Yes

SDK

Webhooks

Authentication

OAuth: No Scopes: No

No authentication/authorization mechanism is mentioned in the provided README/config excerpts; endpoints appear callable directly.

Pricing

Free tier: No

Requires CC: No

Agent Metadata

Pagination

none

Idempotent

False

Retry Guidance

Not documented

Known Gotchas

⚠ Transport is SSE-based with a separate message endpoint tied to a sessionId; agents must correctly establish the SSE session before sending JSON-RPC messages.
⚠ The README describes tool discovery but does not document all MCP method/error semantics or how to handle partial/failed SSE events.
⚠ No authentication and no rate-limiting behavior is documented; agents should be cautious about high request volumes.

Alternatives

Other MCP server implementations (stdio-based MCP servers) Different Spring AI MCP server transport options (e.g., stdio if supported in your environment) Community MCP server frameworks with stronger production hardening

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API endpoint ↗ Agent guide ↗ Report inaccuracy

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