Breadcrumb
Open-source LLM tracing for agent visibility
Breadcrumb is the Plausible of LLM tracing. Self-hosted, open source, and built for developers who just want to understand what their agents are actually doing without the enterprise bloat of LangFuse or LangSmith. Three lines to get your app traced. An LLM watches every trace and automatically flags issues: wrong tool calls, looping agents, oversized models and cost spikes, all before you even know something's wrong. Ask questions about your traces in plain English and get charts back.
Breadcrumb is a Open Source company. It launched on Product Hunt on Mar 26, 2026, with 163 upvotes. Adamlead has 1 person on file at Breadcrumb.
Breadcrumb at a glance
- Website
- breadcrumb.dev
Breadcrumb timeline
- Open-source LLM tracing for agent visibility
People at Breadcrumb
Emails are shown masked, with whether each one has been verified. They're unlocked in the app with Lifetime access.
| Name | Title | |
|---|---|---|
| Maker | j***@breadcrumb.devUnverified |
Frequently asked questions
Who works at Breadcrumb?
Adamlead has 1 person on file at Breadcrumb, including Joshua Knauber (Maker). Each email shows whether it has been verified.