Harness Tuner
eval-driven tuning loop for agent tools, prompts, model
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HN · launched Nov 13, 2026 · 5 upvotes (top 86%) · 0 views
Niche: ai agent evaluation platforms · 182 launches, 8 in the last 7 days ▼ -50% · Explore this niche →
Category and tags
- Horizontal
- Observability & eval
- Developer
- AI-native
Visit website ↗ Source listing ↗
More like this: all 182 launches in ai agent evaluation platforms →
Could you build this?
Yes An eval-driven tuning loop over agent tools, prompts, and models is mostly orchestration, a results UI, and calls to existing LLM APIs. The scraped site text was unusable, so this is judged from the name and tagline.
Discussion
5 comments analyzed.
Concerns raised: Reluctant to migrate into the Kiln ecosystem
Competitors
Other products that read as similar to this one : 4320 launches clear the similarity bar, closest 8 shown.
Attention rank: #3515 of 4321 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 380 days after the earliest competitor.
- Agent Tuning, using recursion to achieve predictable agent output · hn · 2026-04-09 · 5 upvotes · similarity 0.71
- openeval · github · 2026-09-11 · 68 upvotes · similarity 0.69
- Agent-skills-eval · hn · 2026-05-07 · 79 upvotes · similarity 0.65
- Mu · hn · 2026-08-02 · 52 upvotes · similarity 0.65
- ouro · github · 2026-10-07 · 19 upvotes · similarity 0.64
- Moda: The Continual Learning Layer for AI Agents · yc · 2026-03-04 · 122 upvotes · similarity 0.64
- Mingbird · hn · 2026-09-30 · 5 upvotes · similarity 0.64
- Skill-up · hn · 2026-07-30 · 5 upvotes · similarity 0.64
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