The problem
Finding out what actually calls what across services means reading a lot of code. Heimdall draws the real path of a real request as it happens.
- Live
- request tracing
What I built
- A small SDK for Node services
- Live traces, replays and a services map
- An MCP server so AI agents can ask about recent requests
What makes it work
- Data shapes shown, values never stored
- Speeds and failures per service
TypeScriptNext.jsPostgreSQLWebSockets
Next
Grabbit
An M‑Pesa checkout behind anything a Kenyan seller posts on WhatsApp, Instagram or TikTok.