WebSocket Tester
Connect to any ws/wss endpoint and inspect live frames.
Fetches a public URL
Use from your agent
Streamable HTTP at https://benchline.fabwaseem.com/mcp. No key. The tool name is validate_websocket_url.
mcp.jsonjson
1{
2 "mcpServers": {
3 "benchline": {
4 "url": "https://benchline.fabwaseem.com/mcp"
5 }
6 }
7}
tools/calljson
1{
2 "jsonrpc": "2.0",
3 "id": 1,
4 "method": "tools/call",
5 "params": {
6 "name": "validate_websocket_url",
7 "arguments": {
8 "url": "https://example.com/file"
9 }
10 }
11}
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How it works
Free WebSocket testing tool. Connect to ws:// or wss:// endpoints, send text messages, and watch a live timestamped log of incoming, outgoing, and system frames. Close codes are decoded, and an optional heartbeat keeps idle connections alive.
- 01
Enter the endpoint
Type a ws:// or wss:// URL, including any path or query token.
- 02
Connect and send
Open the connection, type a message, and send it. Incoming frames appear instantly.
- 03
Read the log
Each frame is timestamped and marked in, out, or system. Closing shows the decoded close code.