Tessary
Stop your agents from failing silently in production
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Tessary is an open-source agent reliability platform. It monitors every production trace, detects failures that sampled evals miss, and investigates the root cause with your agent codebase. It runs cheap, narrow classifiers across every trace. When it detects a recurring issue or change in behaviour, it groups the affected traces into a finding, validates the issue, and investigates what caused it. This keeps monitoring cheap, with deeper analysis reserved for issues that warrant investigation.
PH · launched Oct 22, 2026 · 23 upvotes (top 3%) · 0 views
Niche: ai agent observability platforms · 220 launches, 5 in the last 7 days ▼ -64% · Explore this niche →
Category and tags
- Horizontal
- Observability & eval
- Developer
- AI-native
- Commercial product
- Open Source
- Developer Tools
- Artificial Intelligence
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More like this: all 220 launches in ai agent observability platforms →
Could you build this?
Partial A trace-ingestion dashboard and open-source packaging are vibe-codeable, but the value depends on detecting failures that sampled evals miss, which needs well-tuned classifiers and root-cause analysis. Ingesting every production trace at scale is also infrastructure-heavy.
What it would actually take: The stack would combine a high-throughput trace ingest pipeline (OpenTelemetry-compatible, with a columnar store such as ClickHouse) with a fleet of cheap classifiers, probably small fine-tuned models or embedding-based detectors. The hard parts are the classifier quality and drift detection across heterogeneous agent traces, plus an investigation agent that links failures to the codebase. This needs ML engineers with observability and evaluation experience and infrastructure for scale.
Competitors
Other products that read as similar to this one : 225 launches clear the similarity bar, closest 8 shown.
Attention rank: #11 of 226 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 353 days after the earliest competitor.
- Agent Reliability Toolkit · ph · 2026-09-10 · 1 upvotes · similarity 0.47
- Lumni · ph · 2026-11-03 · 3 upvotes · similarity 0.43
- Arcyria · ph · 2026-11-12 · 1 upvotes · similarity 0.42
- DidWork · ph · 2026-09-25 · 3 upvotes · similarity 0.42
- Agent-watchdog · ph · 2026-09-21 · 2 upvotes · similarity 0.42
- Agentty · ph · 2026-10-03 · 1 upvotes · similarity 0.40
- GitAgent · hn · 2026-03-14 · 147 upvotes · similarity 0.39
- Linden · ph · 2026-10-22 · 3 upvotes · similarity 0.39
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.