PCAP Analyzer MCP Server

A Model Context Protocol (MCP) server for comprehensive network packet capture and analysis using Wireshark/tshark.

GitHub Repository • Full Documentation

Overview

This MCP server enables AI models to perform sophisticated network packet capture and analysis. It provides 46 specialized tools across 11 categories for deep network analysis, troubleshooting, and security assessment.

Architecture

Two deployment patterns are supported:

1. Local (IDE) — Run alongside your IDE (Claude Desktop, VS Code, Cursor, Kiro, Amazon Q Developer). The MCP client communicates with the server via stdio, which invokes tshark for packet analysis.

2. Cloud (AgentCore Gateway + Lambda) — Deploy as a Lambda function behind AgentCore Gateway with OAuth2/Cognito inbound auth and IAM outbound auth. PCAPs are read from S3.

See the full architecture diagrams on GitHub.

Key Capabilities

• 🔧 Network interface discovery and live packet capture
• 📊 Comprehensive protocol analysis (TCP, TLS, QUIC/HTTP3, BGP, DNS, HTTP)
• 🔒 Security analysis (TLS handshakes, PQC detection, ARP spoofing, DNS tunneling, credential exposure)
• ⚡ Performance metrics (latency, throughput, bandwidth, connection reuse, quality)
• 🔍 Advanced diagnostics (MTU/fragmentation, connection timeouts, out-of-order packets)
• 🌐 Network intelligence (Geo/ASN mapping, ICMP error classification, TCP reset analysis)

Prerequisites

• Python 3.10+
• uv — Install uv
• Wireshark/tshark:
  • macOS: brew install wireshark
  • Linux: sudo apt-get install tshark
  • Windows: Download from wireshark.org

Packet Capture Permissions

Quick Install

# Using uvx (recommended)
uvx awslabs.pcap-analyzer-mcp-server@latest

# Using pip
pip install awslabs.pcap-analyzer-mcp-server
awslabs.pcap-analyzer-mcp-server

# From source
git clone https://github.com/aws-samples/sample-pcap-analyzer-mcp.git
cd sample-pcap-analyzer-mcp
uv sync
uv run awslabs.pcap-analyzer-mcp-server

Configuration

Kiro

Add to .kiro/settings/mcp.json:

{
  "mcpServers": {
    "pcap-analyzer": {
      "command": "uvx",
      "args": ["awslabs.pcap-analyzer-mcp-server@latest"]
    }
  }
}

Claude Desktop

Add to ~/Library/Application Support/Claude/claude_desktop_config.json (macOS):

{
  "mcpServers": {
    "pcap-analyzer": {
      "command": "uvx",
      "args": ["awslabs.pcap-analyzer-mcp-server@latest"]
    }
  }
}

Amazon Q Developer

Add to ~/.aws/amazonq/mcp.json:

{
  "mcpServers": {
    "pcap-analyzer": {
      "command": "uvx",
      "args": ["awslabs.pcap-analyzer-mcp-server@latest"]
    }
  }
}

Environment Variables

Tools (46 total)

Network Interface Management (1)

• list_network_interfaces — Discover available network interfaces

Packet Capture Management (4)

• start_packet_capture / stop_packet_capture / get_capture_status / list_captured_files

Basic PCAP Analysis (4)

• analyze_pcap_file / extract_http_requests / generate_traffic_timeline / search_packet_content

Network Performance (2)

• analyze_network_performance / analyze_network_latency

TLS/SSL Security (6)

• analyze_tls_handshakes / analyze_sni_mismatches / extract_certificate_details / analyze_tls_alerts / analyze_connection_lifecycle / extract_tls_cipher_analysis

TCP Protocol Analysis (5)

• analyze_tcp_retransmissions / analyze_tcp_zero_window / analyze_tcp_window_scaling / analyze_packet_timing_issues / analyze_congestion_indicators

Advanced Network Analysis (5)

• analyze_dns_resolution_issues / analyze_expert_information / analyze_protocol_anomalies / analyze_network_topology / analyze_security_threats

Performance & Quality Metrics (4)

• generate_throughput_io_graph / analyze_bandwidth_utilization / analyze_application_response_times / analyze_network_quality_metrics

Network Diagnostics (6)

• analyze_mtu_fragmentation / analyze_tcp_resets / analyze_duplicate_acks / analyze_icmp_errors / analyze_connection_timeouts / analyze_out_of_order_packets

Protocol & Stream Analysis (3)

• analyze_quic_traffic / follow_tcp_stream / follow_udp_stream

Security Detection (3)

• detect_arp_spoofing / detect_dns_tunneling / extract_credentials

Data Extraction & Intelligence (3)

• extract_fields / analyze_connection_reuse / analyze_geo_asn_mapping

Usage Examples

"Analyze bgp.pcap and explain why the BGP connection is failing"
"Capture network traffic on eth0 for 60 seconds and analyze for security threats"
"Examine TLS handshakes in https-traffic.pcap and identify any certificate issues"
"Check for TCP retransmissions and analyze connection quality in the packet capture"

AgentCore Gateway Deployment

For team-wide or production deployments using AWS Lambda + AgentCore Gateway with OAuth2/Cognito authentication, see the full deployment guide on GitHub.

Contributing

We welcome community contributions! See CONTRIBUTING.md.

License

This library is licensed under the MIT-0 License. See the LICENSE file.