- align all io.modelcontextprotocol.sdk artifacts to 0.18.1 via
dependencyManagement so Spring AI transitives no longer pull mcp 0.10.0
- exclude Spring AI's legacy MCP server/webmvc auto-config, which is binary-
incompatible with the 0.18.1 streamable transport APIs
- build McpSyncServer directly against WebMvcStreamableServerTransportProvider
and adapt Spring AI ToolCallbacks to MCP SyncToolSpecifications manually
- keep /mcp as the sole Streamable HTTP endpoint for both initialize/tool calls
and optional SSE event streams
- update MCP transport documentation to match the new runtime
Validated locally with:
- POST /mcp initialize -> HTTP 200 + Mcp-Session-Id
- POST /mcp tools/list -> returns resolve-library-id + get-library-docs
- Upgrade mcp-spring-webmvc from 0.10.0 to 0.18.1 (adds
WebMvcStreamableServerTransportProvider alongside the legacy SSE provider)
- Add mcp-json-jackson2 0.18.1 for JacksonMcpJsonMapper adapter
- Exclude McpWebMvcServerAutoConfiguration (SSE transport) via
spring.autoconfigure.exclude; register WebMvcStreamableServerTransportProvider
and its RouterFunction manually in McpConfig so Spring AI's
McpServerAutoConfiguration picks up the correct transport bean
- Remove sse-message-endpoint / sse-endpoint from application.yml;
all MCP traffic now flows through POST+GET /mcp
- Remove McpSseMethodNotAllowed workaround from WebConfig and drop
'sse' from SPA fallback exclusions (no longer needed)
Clients should connect with type: http at https://trueref.sal.giize.com/mcp
