# Glasstrace > Agent-native full-stack debugging for AI-assisted web development. ## Quick Start - npm package: @glasstrace/sdk - MCP endpoint: https://api.glasstrace.dev/mcp (Streamable HTTP, Bearer auth) - Recommended workflow: Install SDK → trigger error → use get_latest_error → iterate ## Authentication - Anonymous mode: no API key needed for localhost development (gt_anon_xxx auto-generated) - Paid tier: set GLASSTRACE_API_KEY environment variable ## MCP Tools - get_latest_error: Most recent error trace with span tree - get_trace: Search by URL, method, status code, time window - get_root_cause: AI-powered root cause analysis (paid tier) - get_test_suggestions: Regression test ideas (paid tier) - get_session_timeline: Full session history grouped by route ## Docs - [Getting Started](https://glasstrace.dev/getting-started): Install, init, first trace - [SDK Reference](https://glasstrace.dev/sdk): registerGlasstrace, withGlasstraceConfig, span attributes - [Configuration](https://glasstrace.dev/sdk/config): Environment variables, CaptureConfig, anonymous mode - [MCP Server](https://glasstrace.dev/mcp): 5 debugging tools for AI agents - [Browser Extension](https://glasstrace.dev/extension): Client-side correlation - [Troubleshooting](https://glasstrace.dev/troubleshooting): Common errors and solutions - [Auth & Keys](https://glasstrace.dev/auth): Key types, signup, upgrade path ## Documentation Sets - [Abridged documentation](https://glasstrace.dev/llms-small.txt): a compact version of the documentation for Glasstrace, with non-essential content removed - [Complete documentation](https://glasstrace.dev/llms-full.txt): the full documentation for Glasstrace ## Notes - The complete documentation includes all content from the official documentation - The content is automatically generated from the same source as the official documentation