15 Commits (6d6015a2034dbee2ea4eb50d2e84381df008fa46)

Author	SHA1	Message	Date
Rene Cannao	606fe2e93c	Fix: Address code review feedback from gemini-code-assist ... Python bridge (scripts/mcp/proxysql_mcp_stdio_bridge.py): - Make log file path configurable via PROXYSQL_MCP_BRIDGE_LOG env var - Add httpx.RequestError exception handling for network issues - Fix asyncio.CancelledError not being re-raised (HIGH priority) - Replace deprecated asyncio.get_event_loop() with get_running_loop() C++ server (lib/MCP_Endpoint.cpp): - Refactor handle_tools_call() to reduce code duplication - Handle string responses directly without calling .dump() - Single shared wrapping block for all response types Per review: https://github.com/ProxySQL/proxysql-vec/pull/11	3 months ago
Rene Cannao	49e964bb02	Fix: Make ProxySQL MCP server return MCP-compliant tool responses ... The ProxySQL MCP server now wraps tool results in the correct MCP format: - result.content: array of content items (type: "text", text: "...") - result.isError: boolean Per MCP spec: https://modelcontextprotocol.io/specification/2025-11-25/server/tools Also simplified the bridge to pass through results directly since the server now returns the correct format.	3 months ago
Rene Cannao	9b4aea047a	Fix: Wrap tools/call responses in MCP-compliant content format ... Per MCP spec (https://modelcontextprotocol.io/specification/2025-11-25/server/tools): - Tool call responses MUST have a "content" array - Each content item has "type" and "text" fields - Response includes "isError" boolean This was the root cause - Claude Code was waiting for the correct format.	3 months ago
Rene Cannao	77099f7af2	Debug: Add minimal logging to track stdout writes and tool calls ... Added _log() calls to track: - stdout writes (bytes and content preview) - tools/call handler (name, response, result) - main startup Log is written to /tmp/proxysql_mcp_bridge.log	3 months ago
Rene Cannao	a47567fee7	Revert: Restore original bridge completely ... Restore to exact original code from commit 01c182cc. The original code is clean and simple - just passes through responses. Only added minimal file-based logging for debugging.	3 months ago
Rene Cannao	23e5efca5a	Test: Don't redirect sys.stderr, write logs directly to file ... The sys.stderr redirection may be interfering with stdout/stdin pipes. Now logging writes directly to a file handle instead of through sys.stderr.	3 months ago
Rene Cannao	f4a4af8d82	Fix: Write directly to stdout.buffer to bypass TextIOWrapper issues ... The TextIOWrapper may have buffering issues when stderr is redirected. Writing directly to the binary buffer with encoded bytes ensures immediate delivery of responses to Claude Code.	3 months ago
Rene Cannao	ad54f92dc5	Revert: Simplify tool handlers back to original pass-through ... Remove all the unwrapping and TextContent wrapping logic that was added. Go back to the original simple pass-through that just returns the result from ProxySQL directly. The original format was correct.	3 months ago
Rene Cannao	2b5134632c	Fix: Wrap tool results in TextContent format for MCP protocol compliance ... The MCP protocol requires tool call results to be wrapped in content items with type and text fields. This matches what other MCP servers do. Before: {"result": [{"name": "testdb", ...}]} After: {"result": [{"type": "text", "text": "[{\"name\": \"testdb\", ...}]"}]} This should fix the issue where Claude Code was timing out waiting for responses.	3 months ago
Rene Cannao	55dd5ba574	Debug: Add detailed stdout write logging to troubleshoot Claude Code timeout ... - Revert the stdout replacement changes (was probably not the issue) - Add detailed logging to _writeline to see exactly what's happening when writing to stdout	3 months ago
Rene Cannao	f5606986ff	Fix: Replace stdout with truly unbuffered wrapper to prevent response buffering ... The previous sys.stdout.reconfigure(line_buffering=True) didn't work when stderr is redirected. Now we create a new io.TextIOWrapper around sys.stdout.buffer with line_buffering=False, ensuring immediate flush. Also sets PYTHONUNBUFFERED=1 for extra safety.	3 months ago
Rene Cannao	edac8eb5e0	Fix: Add verbose logging and fix stdout buffering issue in MCP stdio bridge ... - Redirect stderr to /tmp/proxysql_mcp_bridge.log for debugging - Add extreme verbosity with timestamps for all stdin/stdout/HTTP traffic - CRITICAL FIX: Set stdout to line-buffered mode to prevent responses from being buffered and never reaching Claude Code (causing timeouts) - Log all HTTP requests/responses to ProxySQL MCP server - Log all message handling and unwrapping operations	3 months ago
Rene Cannao	fc6b462be1	Fix: unwrap ProxySQL nested response format ... ProxySQL MCP wraps tool responses in {"result": {...}, "success": true}. The bridge now unwraps this to return just the actual result to Claude Code. This fixes the LLM error 'The prompt parameter was not received normally' which occurred because the LLM was receiving the malformed nested structure.	3 months ago
Rene Cannao	4491f3ce0b	Add debug logging to MCP bridge for troubleshooting ... Add PROXYSQL_MCP_DEBUG environment variable to enable verbose logging of all stdio communication and ProxySQL HTTP requests/responses.	3 months ago
Rene Cannao	01c182ccac	Add stdio MCP bridge for Claude Code integration ... Add a Python stdio-based MCP server that bridges to ProxySQL's HTTPS MCP endpoint, enabling Claude Code to use ProxySQL MCP tools directly. The bridge: - Implements stdio MCP server protocol (for Claude Code) - Acts as MCP client to ProxySQL's HTTPS endpoint - Supports initialize, tools/list, tools/call methods - Handles authentication via Bearer tokens - Configurable via environment variables Usage: - Configure in Claude Code MCP settings - Set PROXYSQL_MCP_ENDPOINT environment variable - Optional: PROXYSQL_MCP_TOKEN for auth	3 months ago