Let Claude control a music notation app over MCP
A developer built an iPad and Mac notation editor that Claude Code or Claude Desktop can drive.
Investigate production incidents with a purpose-built SRE agent
A SaaS SRE team that struggled with general agents in incident response built its own Rust agent.
- Difficulty
- AdvancedOur rating
- Time to build
- Not reportedOur estimate
- Monthly cost
- Not reported
- Revenue
- Not reportedWe only show revenue the source states
- Engagement
- 28 HN points6 comments · fetched Oct 15, 2026
What they did
jvogt’s team at Mezmo tried Claude, OpenClaw and LangChain in incident workflows but hit context overflow, security risks, hallucinations and frontier tokens wasted on easy work. They built Aura.
How it went
They open-sourced Aura, which investigates and fixes production incidents.
Worth knowing
They drew a hard line at relaxing production permissions; approval fatigue was real.
Builder recipe
Our own starting point, written from the source. Adapt it to your setup.
Stack
- Aura
- Observability data
- Scoped credentials
Steps
- Write down the manual process step by step.
- Automate the deterministic parts with plain workflow steps or scripts.
- Use the model only where judgment is needed, with confidence checks.
- Add alerts and a human fallback.
Starter prompt
Incident: [alert]. Gather the last 30 minutes of related logs and deploys, rank three hypotheses with evidence, and propose the safest mitigation. Do not change production.Tags
Read the original
- Hacker News: news.ycombinator.com/item?id=49538195 ↗ (opens in new tab) Sep 2, 2026 · 28 points, 6 comments (fetched 2026-10-15)
Related use cases
Let agents find US doctors with checkable evidence over MCP
A developer built a remote MCP server with 1.2M US physicians, Medicare procedure volumes and facts from hospital sites.
Host personal agents in sandboxes for cents a month
A bootstrapped YC founder explains how his sandbox service runs personal Claude Code and OpenClaw agents for about $0.05-$0.10 per free user a month.
Have your agent phone a restaurant and book only if your must-haves are met
A user’s OpenClaw agent called restaurants in Dubai with a strict brief and declined to book when a must-have was missing.
The Daily 5.
Five real AI agent use cases each morning, each with a recipe and a source. Plus a Sunday roundup. Free.