Compactdiff
see what compaction dropped from an agent session
Details
- External ID
- 49220768
- Source
- HN
- Company
- —
- Product
- Compactdiff
- Website domain
- github.com
- Launched
- Aug. 8, 2026
- Cohort
- —
- Upvotes
- 6
- Upvotes percentile
- 0.3125
- Tags
- —
- Fetched at
- Sept. 10, 2026, 5:32 a.m.
- Updated at
- Sept. 10, 2026, 5:32 a.m.
Enrichment
- Theme
- developer tools for ai agents
- Vertical
- Horizontal
- Function
- Observability & eval
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- view compaction changes in agent sessions
- Manually corrected
- False
Could you build this?
Yes This is a specialized diff visualizer tool that compares an agent's pre-compaction prompt/context session against its post-compaction context state.
Discussion
1 comment analyzed.
Competitors mentioned: Claude Code, Codex
Concerns raised: No version history for session compaction, Risk of silently losing constraints during agent sessions
Competitors
Other products that read as similar to this one — 126 launches clear the similarity bar, closest 8 shown.
Attention rank: #75 of 127 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 206 days after the earliest competitor.
- genpark-agent-session-compaction-tokenizer-skill · github · 2026-09-14 · 8 upvotes · similarity 0.45
- genpark-agent-session-compaction-tokenizer-skill · github · 2026-09-14 · 7 upvotes · similarity 0.45
- Stash · hn · 2026-04-23 · 8 upvotes · similarity 0.43
- laya-drift · github · 2026-09-21 · 14 upvotes · similarity 0.42
- FlashCompact: A specialized model for context compaction · yc · 2026-03-18 · 6 upvotes · similarity 0.41
- ATO · hn · 2026-03-19 · 6 upvotes · similarity 0.40
- Tilde.run · hn · 2026-05-06 · 205 upvotes · similarity 0.40
- Buildbox: Agent analytics for real user outcomes · yc · 2026-08-03 · 10 upvotes · similarity 0.40
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a observability & eval tool for Media & entertainment yet.