An AI-native API testing platform built on Model Context Protocol (MCP) that generates mock servers from OpenAPI v2/v3 specs. Supports Mock/Proxy/Hybrid modes with 50 MCP capabilities, integrates with LangGraph/CrewAI/LangChain, and provides enterprise-grade audit logging and performance analytics.

MockLoop MCP#

Overview#

MockLoop MCP is an AI-native API testing platform built on Model Context Protocol (MCP). It automatically generates fully functional mock servers from OpenAPI v2/v3 specs and deeply integrates with AI tools via MCP for intelligent API testing workflows.

Core Capabilities#

MCP Protocol Features (50 Items)#

16 MCP Tools: Mock server generation & management, test scenario validation & deployment, test execution & monitoring, result analysis & reporting
5 MCP Prompts: AI-driven scenario generation (test strategy analysis, load optimization, error simulation, security testing)
15 MCP Resources: Pre-built scenario packs (load testing, error simulation, security testing, performance benchmarks)
10 Context Management: Stateful test workflow management
4 Audit Logging: Audit logs and compliance tracking

Three Operation Modes#

Mock Mode: All requests handled by mock responses
Proxy Mode: All requests forwarded to real API endpoints
Hybrid Mode: Rule-based intelligent routing

Dual-Port Architecture#

Mocked API Port (default 8000): Business API endpoints
Admin UI Port (default 8001): Management interface and logs

Quick Start#

Installation#

pip install mockloop-mcp

MCP Client Configuration (Claude Desktop)#

{
  "mcpServers": {
    "mockloop": {
      "command": "mockloop-mcp",
      "args": []
    }
  }
}

Generate Mock Server#

# Using generate_mock_api tool
{
    "spec_url_or_path": "https://api.example.com/openapi.json",
    "output_dir_name": "my_api_mock"
}

Enterprise Features#

Complete audit logging (GDPR, SOX, HIPAA compliant)
Performance metrics (P50/P95/P99 response times)
Security monitoring and threat detection
SQLite/PostgreSQL support

AI Framework Integration#

LangGraph: State graph workflow integration
CrewAI: Multi-agent test orchestration
LangChain: Tool and agent executor integration

MockLoop MCP