Sean McDonnell

Sean McDonnell

Founder, NextEleven | Software & AI
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About

I'm Sean, founder of NextEleven. I build and improve software for businesses, with a focus on applied AI, automation and tools that make everyday work easier. I'm also the maker of DeadBolt, PersonalRAGVault, Repo Salvage and Harness. I care about clear documentation, easy installation and checking that the software does what it promises. Need help with a new project or an existing system? Find me at nexteleven.dev or @nextelevendev.

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DeadBoltp/deadbolt-4•

9h ago

Where should an agent permission check live in your stack?

I m Sean, the builder behind NextEleven and DeadBolt. I d like to hear from developers about the hardest part of adding execution controls to an agent they already use.

DeadBolt puts a permission check at the tool boundary. A trusted executor checks the gate and starts the protected action only after a fresh explicit allow. You can build it in with Rust, or bolt it on through a local HTTP sidecar or trusted stdio MCP proxy. It is free and open source under Apache-2.0.

The boundary matters: it protects the routes you connect to it. It is not a whole-agent sandbox and cannot cancel an action already running.

The first evaluation uses harmless temporary files and needs no AI account. The captioned walkthrough shows it inside Harness.

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