Simon Willison Builds web-edit 0.1a0 to Edit Files From a Phone

What happened

Simon Willison built web-edit 0.1a0, a Python web app for viewing and editing files in a folder, after wanting to edit a credentials file from his phone without sending those credentials through the LLM. He intends to run it over Tailscale so an agent can start the app and he can edit files directly from his phone. The editor uses CodeMirror 6; Willison said he had considered Monaco but found its mobile experience was not yet great.

The story so far

Simon Willison built web-edit 0.1a0, a Python web app that provides a browser interface for viewing and editing files in a folder, after wanting to edit a credentials file from his phone without passing its contents through an LLM. Willison said he had Codex and GPT-6 Astra Extra High build the app. He intends to run web-edit over Tailscale, allowing an agent to start it and him to edit files directly from his phone through his Tailscale network. The editor uses CodeMirror 6; Willison said he considered Monaco but found its mobile experience was not yet great.

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