HarnessForge Studio
Replay an AI agent trace offline and find where it broke
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Import a recorded agent trace (JSON/JSONL), replay it as a timeline, see loops, retries, failed tools and token growth flagged, compare the fixed run against the broken one, and export a report with secrets masked. One offline HTML file, $49 once.
PH · launched Oct 28, 2026 · 1 upvote (top 67%) · 0 views
Niche: ai agent observability platforms · 213 launches, 12 in the last 7 days ▼ -20% · Explore this niche →
Category and tags
- Horizontal
- Observability & eval
- Developer
- AI-native
- Commercial product
- Productivity
- Developer Tools
- Artificial Intelligence
Visit website ↗ Source listing ↗
Could you build this?
Yes Parsing JSON or JSONL traces, rendering a timeline, diffing two runs, and exporting a masked HTML report are data-processing and UI tasks that a solo builder can vibe-code.
Competitors
Other products that read as similar to this one : 396 launches clear the similarity bar, closest 8 shown.
Attention rank: #242 of 393 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 351 days after the earliest competitor.
- Crescent Trace · ph · 2026-10-17 · 2 upvotes · similarity 0.54
- Progress AI Observability · ph · 2026-08-07 · 168 upvotes · similarity 0.52
- Rill · ph · 2026-09-18 · 1 upvotes · similarity 0.50
- AgentLens Replay · ph · 2026-09-18 · 1 upvotes · similarity 0.50
- agent-tracedown · github · 2026-10-30 · 16 upvotes · similarity 0.50
- Tracekit · ph · 2026-10-05 · 1 upvotes · similarity 0.50
- A better way to handoff web bugs to AI agents · hn · 2025-11-25 · 5 upvotes · similarity 0.47
- Meta-agent: self-improving agent harnesses from live traces · hn · 2026-04-06 · 14 upvotes · similarity 0.47
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.