I made a guardrail against AI outreach slop (API/MCP)
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HN · launched Nov 7, 2026 · 5 upvotes (top 86%) · 0 views
Niche: llm security and guardrails software · 58 launches, 6 in the last 7 days ▼ -33% · Explore this niche →
Category and tags
- Sales
- Compliance & governance
- Developer
- AI-native
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 58 launches in llm security and guardrails software →
Could you build this?
Yes It is a web app plus API that runs deterministic rules and then calls LLMs to classify and rewrite emails, with Gmail and Outlook integrations via standard OAuth and an MCP wrapper.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 1050 launches clear the similarity bar, closest 8 shown.
Attention rank: #825 of 1051 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 374 days after the earliest competitor.
- Retroguard · hn · 2026-05-05 · 6 upvotes · similarity 0.55
- open-guardrail · github · 2026-11-04 · 30 upvotes · similarity 0.55
- jev-llm-guard · github · 2026-09-30 · 11 upvotes · similarity 0.54
- Architectural Guardrails for AI native development · hn · 2026-09-20 · 5 upvotes · similarity 0.54
- Conduct, open-source guardrails for LLM and MCP tool calls · hn · 2026-08-28 · 22 upvotes · similarity 0.53
- I built a game where AI agents compete to ship code · hn · 2026-05-06 · 10 upvotes · similarity 0.52
- I made a local proxy for AI tool calls to keep my API keys safe · hn · 2026-05-05 · 5 upvotes · similarity 0.50
- jes · github · 2026-09-29 · 8 upvotes · similarity 0.49
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