Load and latency harness for Model Context Protocol (MCP) servers. Drives real tools/call traffic at configurable concurrency, measures latency percentiles and throughput, and fails CI when a server misses its performance budget. Stdlib-first, zero required dependencies for stdio.
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MCP Load Lab is an MCP server that load and latency harness for Model Context Protocol (MCP) servers. Drives real tools/call traffic at configurable concurrency, measures latency percentiles and throughput, and fails CI when a server misses its performance budget. Stdlib-first, zero required dependencies for stdio. Its tool list has not been published yet over stdio, sse and http, requires no API key, and scores 54/100 on MCPpedia's security, maintenance and efficiency rubric.
Config is the same across clients - only the file and path differ.
{
"mcpServers": {
"mcp-load-lab": {
"args": [
"mcp-load-lab"
],
"command": "uvx"
}
}
}Are you the author?
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A load and latency harness for Model Context Protocol (MCP) servers.
Run this in your terminal to verify the server starts. Then let us know if it worked - your result helps other developers.
uvx 'mcp-load-lab' 2>&1 | head -1 && echo "✓ Server started successfully"
After testing, let us know if it worked:
Five weighted categories - click any category to see the underlying evidence.
No known CVEs.
Checked mcp-load-lab against OSV.dev.
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