Sharing a small thing I made: Agent Config Builder — Design AI agent configs with tools, memory & system prompt. Simulate sessions, export JSON/YAML. 100% browser-side.
The interesting bit isn't the feature list, it's that the whole thing is one
HTML file with no backend. A Agent Config Builder doesn't actually need a server, so this one
doesn't have one. No upload, no account, no tracking beyond a privacy-friendly
analytics beacon.
If that's useful to you: https://agent.platotools.com/. More like it at platotools.com.
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