Breadcrumb
Open-source LLM tracing for agent visibility
Details
- External ID
- 1107414
- Source
- PH
- Company
- —
- Product
- Breadcrumb
- Website domain
- producthunt.com
- Launched
- March 26, 2026
- Cohort
- —
- Upvotes
- 163
- Upvotes percentile
- 0.09289617486338798
- Tags
- Open Source, Analytics, Developer Tools, GitHub
- Fetched at
- Sept. 7, 2026, 1:23 a.m.
- Updated at
- Sept. 7, 2026, 1:23 a.m.
Description
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.
Enrichment
- Theme
- browser automation and scraping for AI
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- llm tracing for agents
- Manually corrected
- False
Could you build this?
Yes An open-source LLM tracing tool is a straightforward web application with an ingestion API, an OpenTelemetry-compatible lightweight client SDK, a database (e.g., ClickHouse or PostgreSQL), and an LLM evaluation worker.
Competitors
Other products that read as similar to this one — 23 launches clear the similarity bar, closest 8 shown.
Attention rank: #24 of 24 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 135 days after the earliest competitor.
- TraceAIO · hn · 2026-06-30 · 6 upvotes · similarity 0.40
- A MitM proxy to see what your LLM tools are sending · hn · 2026-01-28 · 218 upvotes · similarity 0.38
- Agent-of-empires: opencode & claudecode session manager · hn · 2026-01-10 · 8 upvotes · similarity 0.37
- CodeRLM · hn · 2026-02-11 · 81 upvotes · similarity 0.36
- traceAI · ph · 2026-04-01 · 273 upvotes · similarity 0.35
- Traces: A new way to share and discover agent traces · hn · 2026-03-06 · 13 upvotes · similarity 0.35
- An LLM-Powered PCB Schematic Checker (Major Update) · hn · 2026-01-04 · 55 upvotes · similarity 0.34
- Watermarks Remover: Clean LLM watermarks from text and files · hn · 2026-08-28 · 5 upvotes · similarity 0.33
Other launches for this product
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.