Slash MCP Context Bloat by 70% on Every Turn
Every MCP server you connect secretly loads hundreds of lines of JSON schema into your LLM prompt. Stop burning hundreds of dollars on Claude 3.5 Sonnet and Cursor prompt overhead.
Interactive Prompt Token Cost & Savings Calculator
Adjust your server count and daily usage to see real dollar and token savings.
Install ContextShield in 60 Seconds
Works out-of-the-box with Cursor, Claude Desktop, and Windsurf.
{
"mcpServers": {
"contextshield": {
"command": "npx",
"args": [
"-y",
"contextshield",
"--stdio"
]
}
}
}Semantic Dynamic Dispatch
Replaces bulky schema dumps with a high-speed vector index. Only the exact tools your prompt needs are advertised, keeping model attention razor-sharp.
AST Security Injection Firewall
Inspects all tool execution arguments with AST analysis. Blocks shell execution injections, path traversals, and destructive SQL queries before they touch your systems.
Bypass the 40-Tool Hard Ceiling
Connect dozens of downstream MCP servers (databases, GitHub, browsers, files) while presenting only 1 lightweight server to your editor.