Agent Preflight for Claude.ai

com.agent-preflight/agent-preflight

Budgeted agent preflight: allow|block|reuse|defer|advise. Never executes destination tools. Free MCP

client:Claude.ai transport:streamable-http tools:2

Install Agent Preflight in Claude.ai

Settings → Connectors → Add custom connector

https://api.agent-preflight.com/mcp

Claude on the web takes a remote URL and completes OAuth in the browser. For a packaged server use Claude Desktop or Claude Code instead. Claude.ai docs

What Claude.ai can do once it is connected

check_request
preflight_tool_call

Agent Preflight in other clients

Claude Code
Claude Desktop
Cursor
VS Code
Zed
Windsurf
Cline
Gemini CLI
Grok
ChatGPT
LangChain

Agent Preflight MCP server