Prompt-refiner
Lightweight optimization for LLM inputs and RAG
Details
- External ID
- 46306585
- Source
- HN
- Company
- —
- Product
- Prompt-refiner
- Website domain
- github.com
- Launched
- Dec. 17, 2025
- Cohort
- —
- Upvotes
- 7
- Upvotes percentile
- 0.35877862595419846
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:25 p.m.
- Updated at
- Sept. 7, 2026, 9:25 p.m.
Description
Hi HN,While building RAG agents, I noticed a lot of token budget was wasted on formatting overhead (HTML tags, JSON structure, whitespace). Existing solutions felt too heavy (often requiring torch/transformers), so I wrote this lightweight, zero-dependency library to solve it.It includes strategies for context packing, PII redaction, and tool output compression. Benchmarks show it can save ~15% of tokens with negligible latency overhead (<0.5ms).Happy to answer any questions!
Enrichment
- Theme
- browser automation and scraping for AI
- Vertical
- Horizontal
- Function
- Agent / copilot
- Audience
- Developer
- AI stance
- AI feature
- Project type
- Commercial product
- Normalized one-liner
- optimization for llm prompts and rag
- Manually corrected
- False
Could you build this?
Yes The project is a zero-dependency string manipulation and regex utility library designed to strip redundant whitespace, tags, and formatting boilerplate from LLM prompt contexts.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one — 193 launches clear the similarity bar, closest 8 shown.
Attention rank: #126 of 194 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 46 days after the earliest competitor.
- RAGless · hn · 2026-08-14 · 6 upvotes · similarity 0.56
- Optimize_anything: A Universal API for Optimizing Any Text Parameter · hn · 2026-02-20 · 8 upvotes · similarity 0.45
- An unmetered LLM API–$6/month, no token tracking, no limits · hn · 2026-07-06 · 12 upvotes · similarity 0.44
- I nerfed our coding agents on purpose · hn · 2026-06-05 · 27 upvotes · similarity 0.44
- Local Search Agent · hn · 2026-07-16 · 5 upvotes · similarity 0.42
- Ctx, save tokens by loading only the relevant tools · hn · 2026-06-16 · 8 upvotes · similarity 0.42
- Graph-Oriented Generation · hn · 2026-03-06 · 12 upvotes · similarity 0.42
- L88 · hn · 2026-02-24 · 12 upvotes · similarity 0.42
Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a agent / copilot tool for Agriculture yet.