Inital commit

2026-07-29 01:00:10 -05:00
commit 23e8ea90e4
3301 changed files with 1376308 additions and 0 deletions
@@ -0,0 +1,114 @@
+#!/usr/bin/env python3
+"""
+MCP server that crashes after receiving a specific tool call.
+"""
+import json
+import sys
+import os
+
+def handle_initialize(params, req_id):
+    return {
+        "jsonrpc": "2.0",
+        "id": req_id,
+        "result": {
+            "protocolVersion": "2024-11-05",
+            "capabilities": {"tools": {}},
+            "serverInfo": {"name": "crash-test", "version": "1.0"}
+        }
+    }
+
+def handle_tools_list(params, req_id):
+    return {
+        "jsonrpc": "2.0",
+        "id": req_id,
+        "result": {
+            "tools": [
+                {
+                    "name": "echo",
+                    "description": "Echo back the input message",
+                    "inputSchema": {
+                        "type": "object",
+                        "properties": {
+                            "message": {"type": "string"}
+                        }
+                    }
+                },
+                {
+                    "name": "crash",
+                    "description": "Crash the server",
+                    "inputSchema": {
+                        "type": "object",
+                        "properties": {}
+                    }
+                }
+            ]
+        }
+    }
+
+def handle_tools_call(params, req_id):
+    tool_name = params.get("name")
+    arguments = params.get("arguments", {})
+
+    if tool_name == "echo":
+        message = arguments.get("message", "")
+        return {
+            "jsonrpc": "2.0",
+            "id": req_id,
+            "result": {
+                "content": [{"type": "text", "text": f"echo: {message}"}]
+            }
+        }
+    elif tool_name == "crash":
+        # Send a partial response then exit
+        sys.stdout.write(json.dumps({"jsonrpc": "2.0", "id": req_id, "result": {"content": [{"type": "text", "text": "crashing..."}]}}) + "\n")
+        sys.stdout.flush()
+        os._exit(1)
+    else:
+        return {
+            "jsonrpc": "2.0",
+            "id": req_id,
+            "error": {"code": -32602, "message": f"Unknown tool: {tool_name}"}
+        }
+
+HANDLERS = {
+    "initialize": handle_initialize,
+    "tools/list": handle_tools_list,
+    "tools/call": handle_tools_call,
+}
+
+def main():
+    sys.stdout = os.fdopen(sys.stdout.fileno(), "w", buffering=1)
+    sys.stderr = os.fdopen(sys.stderr.fileno(), "w", buffering=1)
+
+    for line in sys.stdin:
+        line = line.strip()
+        if not line:
+            continue
+        try:
+            request = json.loads(line)
+        except json.JSONDecodeError:
+            continue
+
+        method = request.get("method")
+        req_id = request.get("id")
+        params = request.get("params", {})
+
+        # JSON-RPC 2.0: a message without an id is a notification and must not receive a response
+        if req_id is None:
+            continue
+
+        handler = HANDLERS.get(method)
+        if handler:
+            response = handler(params, req_id)
+        else:
+            response = {
+                "jsonrpc": "2.0",
+                "id": req_id,
+                "error": {"code": -32601, "message": f"Method not found: {method}"}
+            }
+
+        sys.stdout.write(json.dumps(response) + "\n")
+        sys.stdout.flush()
+
+if __name__ == "__main__":
+    main()