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A Model Context Protocol (MCP) client library and debugging toolkit in Rust. This foundation provides both a production-ready SDK for building MCP integrations and the core architecture for an interactive debugger.
MCP Probe is a powerful Terminal User Interface (TUI) for debugging, testing, and interacting with Model Context Protocol (MCP) servers. It provides an intuitive, feature-rich alternative to command-line MCP inspectors with real-time protocol analysis, capability discovery, and interactive tool execution.
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🔍 MCP PROBE ARCHITECTURE │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ ┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐ │
│ │ 🖥️ TUI │ │ 🔌 Transport │ │ 🔧 MCP Server │ │
│ │ Interface │◄──►│ Layer │◄──►│ (Any impl.) │ │
│ │ │ │ │ │ │ │
│ │ • Capabilities │ │ • HTTP/SSE │ │ • Tools (373+) │ │
│ │ • Search │ │ • WebSocket │ │ • Resources │ │
│ │ • Response View │ │ • STDIO │ │ • Prompts │ │
│ │ • Debugging │ │ • TCP │ │ │ │
│ └─────────────────┘ └─────────────────┘ └─────────────────┘ │
│ │ │ │ │
│ ▼ ▼ ▼ │
│ ┌─────────────────────────────────────────────────────────────────────────────┤
│ │ 📊 REAL-TIME PROTOCOL ANALYSIS │
│ │ • Message Tracing • Session Management • Error Detection │
│ │ • JSON Validation • Response Formatting • Performance Metrics │
│ └─────────────────────────────────────────────────────────────────────────────┘
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
MCP Probe offers multiple installation methods for your convenience:
Download the latest binary for your platform from GitHub Releases:
mcp-probe-x86_64-unknown-linux-gnu.tar.gzmcp-probe-aarch64-unknown-linux-gnu.tar.gzmcp-probe-x86_64-apple-darwin.tar.gzmcp-probe-aarch64-apple-darwin.tar.gzmcp-probe-x86_64-pc-windows-msvc.zipcurl -fsSL https://raw.githubusercontent.com/conikeec/mcp-probe/master/install.sh | bash
Custom installation directory:
curl -fsSL https://raw.githubusercontent.com/conikeec/mcp-probe/master/install.sh | INSTALL_DIR=~/.local/bin bash
Install specific version:
curl -fsSL https://raw.githubusercontent.com/conikeec/mcp-probe/master/install.sh | VERSION=v0.1.55 bash
# Add the tap
brew tap conikeec/tap
# Install mcp-probe
brew install mcp-probe
# Or in one command
brew install conikeec/tap/mcp-probe
Update:
brew upgrade mcp-probe
cargo install mcp-cli
Note: The binary will be named mcp-probe even though the crate is mcp-cli.
# Clone the repository
git clone https://github.com/conikeec/mcp-probe.git
cd mcp-probe
# Build and install
cargo build --release
cargo install --path .
# Or run directly
cargo run -- --help
All binaries are provided with SHA256 checksums. You can verify your download:
# Download checksum file
curl -LO https://github.com/conikeec/mcp-probe/releases/latest/download/mcp-probe-x86_64-unknown-linux-gnu.tar.gz.sha256
# Verify (Linux/macOS)
sha256sum -c mcp-probe-x86_64-unknown-linux-gnu.tar.gz.sha256
# Verify (macOS alternative)
shasum -a 256 -c mcp-probe-x86_64-apple-darwin.tar.gz.sha256
# Test with a local MCP server
cargo run -- debug --http-sse http://localhost:3000
# Connect to remote server
cargo run -- debug --http-sse https://api.example.com/mcp
# Use WebSocket transport
cargo run -- debug --websocket ws://localhost:8080/mcp
# STDIO mode for local development
cargo run -- debug --stdio python my_mcp_server.py
MCP Probe serves as a comprehensive MCP client for developers and integrators who need to interact with MCP servers programmatically or interactively.
# Basic connection with default settings
mcp-probe debug --http-sse http://localhost:3000
# Advanced configuration
mcp-probe debug \
--http-sse http://localhost:3000 \
--timeout 30 \
--max-retries 3 \
--session-file my_session.json
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🎮 INTERACTIVE CLIENT WORKFLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ 1️⃣ DISCOVERY PHASE │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ ┌─ Connection ─┐ ┌─ Capabilities ─┐ ┌─ Search & Filter ─┐ │ │
│ │ │• Auto-detect │ │• Tools: 373 │ │• Fuzzy matching │ │ │
│ │ │• Protocol │ │• Resources: 1 │ │• Category filter │ │ │
│ │ │• Session ID │ │• Prompts: 3 │ │• Real-time index │ │ │
│ │ └──────────────┘ └─────────────────┘ └───────────────────┘ │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ 2️⃣ INTERACTION PHASE │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ ┌─ Parameter Input ─┐ ┌─ Execution ─┐ ┌─ Response Analysis ─┐ │ │
│ │ │• Smart forms │ │• Real-time │ │• Multi-format view │ │ │
│ │ │• Type validation │ │• Progress │ │• Error highlighting │ │ │
│ │ │• Auto-completion │ │• Correlation │ │• Export options │ │ │
│ │ └───────────────────┘ └──────────────┘ └─────────────────────┘ │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ 3️⃣ ANALYSIS PHASE │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ ┌─ Session Review ─┐ ┌─ Error Analysis ─┐ ┌─ Export & Share ─┐ │ │
│ │ │• Message history │ │• Root cause hints │ │• JSON export │ │ │
│ │ │• Timing metrics │ │• Fix suggestions │ │• Session replay │ │ │
│ │ │• Protocol trace │ │• Debug logs │ │• Report sharing │ │ │
│ │ └─────────────────────└───────────────────┘ └─────────────────┘ │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
Fuzzy Search Engine: Find tools instantly among hundreds of capabilities
# Search examples (press '/' to activate)
/github # Find GitHub-related tools
/repo list # Find repository listing functions
/add_numbers # Direct tool name match
Auto-Parameter Detection: Intelligent form generation from JSON schemas
# Example: GitHub repo listing tool
┌─────────────────────────────────────┐
│ 📋 org (REQUIRED) [string] │
│ 💡 The organization name... │
│ > myorganization │
├─────────────────────────────────────┤
│ 📝 per_page (optional) [integer] │
│ 💡 Results per page (max 100) │
│ > 50 │
└─────────────────────────────────────┘
Direct Command Mode:
# Syntax: category.name {"param": "value"}
tools.add_numbers {"a": 10, "b": 20}
resources.readme_content
prompts.generate_docs {"style": "technical"}
Interactive Mode: Use TUI navigation for guided execution
Batch Mode: Execute multiple operations with session scripts
MCP Probe features a sophisticated protocol discovery system that automatically detects and adapts to different MCP protocol versions, providing seamless connectivity across the evolving MCP ecosystem.
Automatic Protocol Detection: MCP Probe automatically detects the protocol version based on endpoint patterns and server behavior, eliminating manual configuration.
# MCP Probe automatically detects the protocol version from these patterns:
mcp-probe debug --http-sse http://localhost:8931/mcp # Modern Streamable HTTP
mcp-probe debug --http-sse http://localhost:8931/sse # Legacy HTTP+SSE
mcp-probe debug --stdio python server.py # Standard Transport
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🌟 MODERN STREAMABLE HTTP WORKFLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ Client MCP Probe Server │
│ │ │ │ │
│ │ │ │ │
│ │──── 1. Connection ──────►│────── POST /mcp ──────────►│ │
│ │ │ Mcp-Session-Id: [auto] │ │
│ │ │ │ │
│ │◄─── Session Created ─────│◄───── 200 + Session ───────│ │
│ │ │ Mcp-Session-Id: abc123 │ │
│ │ │ │ │
│ │──── 2. Initialize ──────►│────── POST /mcp ──────────►│ │
│ │ │ Mcp-Session-Id: abc123 │ │
│ │ │ {"method": "initialize"} │ │
│ │ │ │ │
│ │◄─── Capabilities ────────│◄───── 200 OK ──────────────│ │
│ │ │ Server capabilities │ │
│ │ │ │ │
│ │──── 3. Ready State ─────►│──────── Persistent ────────►│ │
│ │ │ Session Active │ │
│ │
│ ✅ Single endpoint simplicity 🔒 Header-based security │
│ ✅ Built-in session management ⚡ Automatic resumability │
│ ✅ Firewall-friendly 📊 Full streaming support │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 📡 LEGACY HTTP+SSE WORKFLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ Client MCP Probe Server │
│ │ │ │ │
│ │ │ │ │
│ │──── 1. Discover ────────►│────── GET /events ────────►│ │
│ │ │ Accept: text/event-stream │ │
│ │ │ │ │
│ │◄─── Session Info ────────│◄───── SSE Stream ──────────│ │
│ │ │ data: {"sessionId": "xyz"}│ │
│ │ │ │ │
│ │──── 2. Initialize ──────►│─── POST /sse?sessionId=xyz─►│ │
│ │ │ {"method": "initialize"} │ │
│ │ │ │ │
│ │◄─── Capabilities ────────│◄───── 200 OK ──────────────│ │
│ │ │ Server capabilities │ │
│ │ │ │ │
│ │──── 3. SSE Listen ──────►│─── GET /sse?sessionId=xyz──►│ │
│ │ │ Accept: text/event-stream │ │
│ │ │ │ │
│ │◄─── Event Stream ────────│◄──── SSE Messages ─────────│ │
│ │ │ Continuous updates │ │
│ │
│ 🔄 Dual-endpoint architecture 📡 Query-based sessions │
│ 🔄 Separate discovery phase ⚡ Event-driven updates │
│ 🔄 Legacy compatibility 📊 SSE streaming support │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🔧 STANDARD TRANSPORT WORKFLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ Client MCP Probe Process │
│ │ │ │ │
│ │ │ │ │
│ │──── 1. Spawn Process ───►│────── exec/spawn ─────────►│ │
│ │ │ python server.py │ │
│ │ │ │ │
│ │◄─── Process Ready ───────│◄───── stdin/stdout ────────│ │
│ │ │ Process initialization │ │
│ │ │ │ │
│ │──── 2. Initialize ──────►│────── JSON-RPC ───────────►│ │
│ │ │ via stdin │ │
│ │ │ │ │
│ │◄─── Capabilities ────────│◄───── JSON-RPC ────────────│ │
│ │ │ via stdout │ │
│ │ │ │ │
│ │──── 3. Bidirectional ───►│──── stdin/stdout pipes ────►│ │
│ │ │ Full-duplex communication │ │
│ │
│ 🚀 Direct process control 🔧 Perfect for development │
│ 🚀 No network complexity ⚡ Immediate debugging │
│ 🚀 Local filesystem access 📊 Full protocol support │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🖥️ INTERACTIVE TUI WORKFLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ Phase 1: CONNECTION & DISCOVERY │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ 🔌 Auto-detect Protocol → 📡 Establish Session → 🔍 Discover Tools │ │
│ │ • Parse endpoint URL • Header/query sessions • Fuzzy search │ │
│ │ • Detect /mcp vs /sse • Auto-resume capability • Category filter │ │
│ │ • Security validation • Background monitoring • Real-time index │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ Phase 2: INTERACTIVE EXECUTION │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ 📋 Parameter Forms → ⚡ Real-time Execution → 📊 Response Analysis│ │
│ │ • Smart type detection • Progress indicators • Multi-format view │ │
│ │ • Schema-driven hints • Error correlation • Error highlighting │ │
│ │ • Auto-completion • Session persistence • Export options │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ Phase 3: ANALYSIS & DEBUGGING │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ 📈 Session Review → 🔧 Error Investigation → 📤 Export & Share │ │
│ │ • Message history • Root cause analysis • JSON export │ │
│ │ • Timing metrics • Fix suggestions • Session replay │ │
│ │ • Protocol trace • Debug logs • Report generation │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ │
│ 🎮 User Experience: Visual, guided, exploratory │
│ ⌨️ Hotkeys: Tab navigation, / search, Enter execute │
│ 🔍 Features: Fuzzy search, parameter forms, real-time feedback │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
Interactive Mode Commands:
# Launch TUI with automatic protocol detection
mcp-probe debug --http-sse http://localhost:8931/mcp
# TUI Navigation Flow:
# 1. Tab → Navigate between panels
# 2. / → Activate fuzzy search
# 3. ↑↓ → Browse capabilities
# 4. Enter → Open parameter form
# 5. Tab → Execute with parameters
# 6. V → Cycle response views
# 7. F2 → Save session
# Smart Parameter Forms:
# • Auto-detects field types from JSON Schema
# • Provides contextual hints and validation
# • Supports environment variable injection
# • Real-time syntax validation
┌─────────────────────────────────────────────────────────────────────────────────┐
│ ⚡ NON-INTERACTIVE CLI WORKFLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ Phase 1: RAPID CONNECTION │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ 🚀 Direct Connect → 📊 Quick Capability Dump │ │
│ │ • Protocol auto-detection • Structured output │ │
│ │ • No user interaction • Machine-readable format │ │
│ │ • CI/CD friendly • Error codes for automation │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ Phase 2: BATCH EXECUTION │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ 📝 Command Scripts → ⚙️ Automated Testing → 📄 Report Output │ │
│ │ • Direct tool execution • Comprehensive test suite • JSON/CSV export │ │
│ │ • Parameter validation • Protocol compliance • CI integration │ │
│ │ • Bulk operations • Performance monitoring • Success/fail codes│ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ ▼ │
│ Phase 3: PRODUCTION VALIDATION │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ 🔍 Health Checks → 📊 Performance Analysis → 🚨 Alert Integration│ │
│ │ • Endpoint discovery • Response time metrics • Monitoring systems │ │
│ │ • Protocol compliance • Memory usage tracking • Automated alerts │ │
│ │ • Schema validation • Error rate analysis • Report webhooks │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ │
│ 🤖 Use Cases: CI/CD pipelines, monitoring, automation │
│ ⚡ Features: Zero interaction, structured output, exit codes │
│ 🔧 Integration: Scripts, Docker, Kubernetes health checks │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
Non-Interactive Mode Commands:
# Quick capability overview
mcp-probe debug --http-sse http://localhost:8931/mcp --non-interactive
# Automated testing with reports
mcp-probe test --http-sse http://localhost:8931/mcp --report --output-dir ./reports
# Endpoint discovery for load balancers
mcp-probe test --discover http://api.company.com --report
# CI/CD integration examples
mcp-probe test --http-sse $MCP_SERVER_URL --fail-fast --timeout 30
if [ $? -eq 0 ]; then echo "✅ MCP server healthy"; else echo "❌ MCP server failed"; fi
# Batch operations for monitoring
mcp-probe validate --http-sse http://prod-server/mcp --suite compliance
Multi-Endpoint Discovery: MCP Probe can discover and test multiple MCP endpoints from a base URL, perfect for load balancers and multi-service deployments.
# Discover all MCP endpoints under a domain
mcp-probe test --discover https://api.company.com
# Discovery automatically tests these patterns:
# • https://api.company.com/mcp (Modern)
# • https://api.company.com/sse (Legacy)
# • https://api.company.com/events (Discovery)
# • https://api.company.com/v1/mcp (Versioned)
# • https://api.company.com/api/mcp (Nested)
# Output shows availability and capabilities:
✅ Modern Streamable HTTP - 47 tools, 3 resources, 2 prompts
✅ Legacy HTTP+SSE - 47 tools, 3 resources, 2 prompts
❌ Versioned API - Connection failed
⚠️ Nested API - Invalid response format
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🔒 SECURITY VALIDATION │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ 🛡️ Connection Security │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ • HTTPS enforcement for production URLs │ │
│ │ • Origin validation to prevent DNS rebinding │ │
│ │ • Session ID format validation (cryptographic strength) │ │
│ │ • Certificate verification for remote servers │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ │
│ 🔐 Session Management │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ • Automatic session discovery and renewal │ │
│ │ • Secure session ID generation and tracking │ │
│ │ • Background session monitoring for ephemeral servers │ │
│ │ • Session resumption after network interruptions │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ │
│ ⚡ Performance & Reliability │
│ ┌─────────────────────────────────────────────────────────────────────────┐ │
│ │ • Connection pooling and keep-alive │ │
│ │ • Automatic retry with exponential backoff │ │
│ │ • Request timeout and circuit breaker patterns │ │
│ │ • Memory-efficient streaming for large responses │ │
│ └─────────────────────────────────────────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
Comprehensive Test Suites: MCP Probe includes extensive test suites for validating protocol compliance across different versions.
# Full protocol compliance testing
mcp-probe validate --http-sse http://localhost:8931/mcp --suite all
# Specific compliance areas:
mcp-probe validate --suite initialization # Connection & handshake
mcp-probe validate --suite capabilities # Tool/resource discovery
mcp-probe validate --suite schema # JSON Schema validation
mcp-probe validate --suite security # Security best practices
mcp-probe validate --suite performance # Response time & throughput
# Generate detailed compliance reports
mcp-probe validate --suite all --report --output-dir ./compliance-reports
MCP Probe excels as a diagnostic tool for MCP deployments, providing deep insights into protocol behavior, performance bottlenecks, and integration issues.
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 🔍 TROUBLESHOOTING DASHBOARD │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ 🔴 CONNECTION DIAGNOSTICS 🟡 PROTOCOL ANALYSIS │
│ ┌─────────────────────────────┐ ┌─────────────────────────────────────┐ │
│ │ • Transport validation │ │ • Message correlation │ │
│ │ • Authentication checks │ │ • Response time analysis │ │
│ │ • Firewall/proxy detection │ │ • Error pattern recognition │ │
│ │ • SSL/TLS verification │ │ • Capability compatibility │ │
│ └─────────────────────────────┘ └─────────────────────────────────────┘ │
│ │
│ 🟢 PERFORMANCE MONITORING 🟣 ERROR INVESTIGATION │
│ ┌─────────────────────────────┐ ┌─────────────────────────────────────┐ │
│ │ • Request/response latency │ │ • Stack trace analysis │ │
│ │ • Throughput measurement │ │ • JSON schema validation │ │
│ │ • Memory usage tracking │ │ • Serialization debugging │ │
│ │ • Connection stability │ │ • Integration compatibility │ │
│ └─────────────────────────────┘ └─────────────────────────────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
Symptoms: "Transport connection failed", "Connection refused"
Diagnosis with MCP Probe:
# 1. Test basic connectivity
mcp-probe debug --http-sse http://localhost:3000
# 2. Check different transports
mcp-probe debug --websocket ws://localhost:8080/mcp
mcp-probe debug --stdio python server.py
# 3. Monitor protocol flow
# Look for: Connection status, SSL handshake, authentication
Troubleshooting Guide:
Symptoms: "Serialization error", "Invalid parameters", "Tool not found"
Diagnosis with MCP Probe:
# 1. Verify tool discovery
# Navigate to Tools section, check tool list
# 2. Inspect parameter schemas
# Select tool -> Parameter form should show required fields
# 3. Check raw response data
# Use 'V' key to cycle through response formats
Common Root Causes:
Symptoms: Slow responses, timeouts, memory issues
Diagnosis with MCP Probe:
# 1. Monitor timing metrics
# Check message history for response times
# 2. Analyze message sizes
# Use Raw JSON view to inspect payload sizes
# 3. Track connection stability
# Watch for reconnection attempts in logs
Message Flow Analysis:
┌─────────────────────────────────────────────────────────────────────────────────┐
│ 📈 PROTOCOL MESSAGE FLOW │
├─────────────────────────────────────────────────────────────────────────────────┤
│ │
│ Client MCP Probe Server │
│ │ │ │ │
│ │──── initialize ────────►│────── HTTP/POST ──────────►│ │
│ │ │ │ │
│ │◄─── init_response ──────│◄───── 200 OK ──────────────│ │
│ │ │ │ │
│ │──── tools/list ────────►│────── HTTP/POST ──────────►│ │
│ │ │ │ │
│ │◄─── tools_response ─────│◄───── 200 OK ──────────────│ │
│ │ │ │ │
│ │──── tools/call ────────►│────── HTTP/POST ──────────►│ │
│ │ │ (params) │ │
│ │ │ │ │
│ │◄─── result/error ───────│◄───── 200/400/500 ─────────│ │
│ │ │ │ │
│ │
│ 🔍 MCP Probe captures and analyzes each step: │
│ • Request correlation (session ID tracking) │
│ • Response time measurement │
│ • Error classification and suggestions │
│ • JSON schema validation │
│ │
└─────────────────────────────────────────────────────────────────────────────────┘
Development Environment Checklist:
# 1. Server Implementation Validation
✅ Server responds to initialize request
✅ Capabilities are properly declared
✅ Tool schemas are valid JSON Schema
✅ Error responses include helpful messages
# 2. Integration Testing
✅ Authentication flow works correctly
✅ Session management is stable
✅ All transport types are supported
✅ Error handling is graceful
# 3. Performance Validation
✅ Response times are within SLA
✅ Memory usage is reasonable
✅ Concurrent requests are handled
✅ Rate limiting is implemented correctly
# Connection
mcp-probe debug --http-sse <url> # HTTP Server-Sent Events
mcp-probe debug --websocket <url> # WebSocket connection
mcp-probe debug --stdio <command> # STDIO transport
mcp-probe debug --tcp <host:port> # Raw TCP connection
# Configuration
mcp-probe debug <transport> --timeout 30 # Request timeout
mcp-probe debug <transport> --max-retries 3 # Retry attempts
mcp-probe debug <transport> --session-file <f> # Session persistence
# Syntax: category.name {json_params}
tools.add_numbers {"a": 10, "b": 20}
tools.github_list_repos {"org": "microsoft", "per_page": 10}
resources.readme_content
prompts.code_review {"language": "rust", "style": "detailed"}
# Set variables for tool injection
KEY=value,API_TOKEN=secret123,ORG=myorg
# Variables automatically injected into tool calls
tools.api_call {} # Will include ORG=myorg if tool expects it
MCP Probe automatically organizes all generated files in a clean, structured directory hierarchy in your home directory.
~/.mcp-probe/
├── logs/ # All log files with timestamps
│ ├── mcp-probe-debug.log # TUI mode debug log
│ └── mcp-probe-YYYYMMDD_HHMMSS.log # CLI mode logs
├── reports/ # All generated reports with date prefixes
│ ├── YYYYMMDD-test-report-HHMMSS.json
│ ├── YYYYMMDD-validation-report-HHMMSS.json
│ └── YYYYMMDD-discovery-report-HHMMSS.json
├── sessions/ # Saved session files
│ └── debug-session-YYYYMMDD_HHMMSS.json
└── config/ # Configuration files
└── mcp-probe.toml
# Show directory structure and usage
mcp-probe paths show
# Clean up old files (dry run)
mcp-probe paths cleanup --days 30
# Actually clean up files older than 7 days
mcp-probe paths cleanup --days 7 --force
# Open MCP Probe directory in file manager
mcp-probe paths open
All reports are automatically prefixed with dates for easy organization:
YYYYMMDD-report-name-HHMMSS.extension20250622-test-report-143052.jsonMCP Probe includes intelligent cleanup features:
# Show what would be cleaned up
mcp-probe paths cleanup --days 30
# Clean files older than 30 days
mcp-probe paths cleanup --days 30 --force
# The paths show command gives cleanup recommendations
mcp-probe paths show
# Auto-save sessions
mcp-probe debug --http-sse http://localhost:3000 --session-file debug.json
# Session contains:
# • Connection parameters
# • Message history with timing
# • Error logs and diagnostics
# • Environment variables
# • Response cache for offline analysis
mcp-probe debug --http-sse http://localhost:3000
# ✅ Most compatible with web servers
# ✅ Firewall-friendly
# ✅ Built-in error handling
mcp-probe debug --websocket ws://localhost:8080/mcp
# ✅ Real-time bidirectional communication
# ✅ Lower latency
# ⚠️ May require proxy configuration
mcp-probe debug --stdio python my_server.py
# ✅ Perfect for local testing
# ✅ Direct process communication
# ⚠️ Limited to local development
mcp-probe debug --tcp localhost:9000
# ✅ Low-level protocol access
# ✅ Custom transport implementations
# ⚠️ Requires manual protocol handling
mcp-probe/
├── crates/
│ ├── mcp-core/ # Core MCP protocol implementation
│ │ ├── src/
│ │ │ ├── client.rs # High-level MCP client
│ │ │ ├── transport/ # Transport layer abstractions
│ │ │ └── messages/ # Protocol message definitions
│ │ └── Cargo.toml
│ └── mcp-cli/ # TUI application
│ ├── src/
│ │ ├── tui.rs # Terminal UI implementation
│ │ ├── search.rs # Capability search engine
│ │ └── main.rs # CLI entry point
│ └── Cargo.toml
├── target/ # Build artifacts
├── Cargo.toml # Workspace configuration
└── README.md
# Debug build
cargo build
# Release build (recommended for performance)
cargo build --release
# Run tests
cargo test
# Run with logging
RUST_LOG=debug cargo run -- debug --http-sse http://localhost:3000
This project is licensed under the MIT License - see the LICENSE file for details.
# Connect to your MCP server
mcp-probe debug --http-sse https://api.yourservice.com/mcp
# 1. Verify connection and capabilities
# 2. Search for relevant tools: /api or /user
# 3. Test tool execution with real parameters
# 4. Analyze responses for integration issues
# 5. Export session for team sharing
# Set up performance monitoring
mcp-probe debug --http-sse http://localhost:3000 --session-file perf_test.json
# 1. Execute high-frequency tool calls
# 2. Monitor response times in message history
# 3. Check for memory leaks or connection issues
# 4. Review session file for timing analysis
# Local development testing
mcp-probe debug --stdio python my_mcp_server.py
# 1. Rapid iteration on server code
# 2. Test tool schemas and validation
# 3. Debug parameter handling
# 4. Verify error response formats
MCP Probe includes comprehensive automation for code quality and CI/CD:
# Run all checks (formatting, clippy, tests)
./scripts/check.sh
# Auto-fix formatting and clippy issues
./scripts/fix.sh
# Publish to crates.io (with all checks)
./scripts/release.sh
Our GitHub Actions CI pipeline automatically runs:
rustfmt ensures consistent code styleclippy with warnings as errors for code qualitycargo audit for vulnerability scanningReleases to crates.io are fully automated:
mcp-core published first (dependency)mcp-cli published second# Install development tools
cargo install cargo-audit cargo-tarpaulin
# Set up git hooks (optional)
cargo install cargo-husky
rustfmt.toml configurationBoth crates are available on crates.io:
# Install the CLI tool
cargo install mcp-cli
# Add core library to your project
[dependencies]
mcp-core = "0.1.0"
Made with ❤️ in Rust
This project wouldn't be possible without:
Special thanks to the Ratatui team for creating the foundation that makes our beautiful TUI possible! 🎨
🎯 MCP Probe: Making MCP protocol debugging as intuitive as it should be.
A Model Context Protocol (MCP) client library and debugging toolkit in Rust. This foundation provides both a production-ready SDK for building MCP integrations and the core architecture for an interac
ภาพรวม
A Model Context Protocol (MCP) client library and debugging toolkit in Rust. This foundation provides both a production-ready SDK for building MCP integrations and the core architecture for an interactive debugger.
เครื่องมือ
ยังไม่มีรายการเครื่องมือ เซิร์ฟเวอร์แบบรีโมตจะได้รายการหลังการตรวจสอบสถานะครั้งแรก
FAQ
คัดลอกคอนฟิก stdio สำหรับ Cursor, Claude Desktop, Claude Code หรือ VS Code ได้ในหน้านี้ คอนฟิกนี้ใช้การติดตั้งของผู้เผยแพร่ ไม่ใช่พร็อกซีของ PlugMCP
ระเบียนนี้ไม่ได้ระบุตัวแปรสภาพแวดล้อมที่จำเป็น
MCP Probe ทำงานแบบโลคัลผ่าน stdio
ตรวจสอบล่าสุดเมื่อ 2026-10-26 A Model Context Protocol (MCP) client library and debugging toolkit in Rust. This foundation provides both a production-ready SDK for building MCP integrations and the core architecture for an interactive debugger.