Awesome Hermes Plugins › Browser, Media & Other Backends

lEWFkRAD/hermes-excel-sidecar

⭐ 10 JavaScript added to this list on 2026-11-09 repository created 2026-07-11

hermes-excel-sidecar, published as "Hermes for Excel", is an independently packaged Hermes plugin that connects a live Excel workbook to a running Hermes gateway. It has two parts: an Office.js task-pane add-in that runs inside Excel, and a small, zero-dependency Node.js bridge that relays between the task pane and Hermes's api_server platform. Users chat with Hermes in a side panel while it reads sheet data across the whole workbook, writes tables and formulas, applies cell formatting, and parses attached documents, all without the agent touching the filesystem directly; every change is applied by the task pane itself from a structured JSON action contract, never executed as an agent tool call, which the project calls a defense-in-depth containment measure. Table formulas are authored by the model in A1-relative form and rebased by the bridge to wherever the table actually lands, preserving dollar-anchors and cross-sheet references; written ranges are re-read afterward and flagged if they contain error values or an all-zero formula column. Other features include per-workbook conversation memory across pane reopens, undo for the last ten changes, an optional review-before-apply mode, and drag-and-drop attachments, with text and CSV parsed locally and other formats through an optional Docling service. Installation and lifecycle are managed through Hermes plugin commands and a dedicated excel-sidecar CLI, with all state such as config, tokens, uploads and logs scoped per Hermes profile; because Excel add-in sideloading and the localhost bridge are Windows-user-level singletons, only one profile can own them at a time, tracked by a receipt file, and automatic cross-profile takeover is deliberately unsupported. Requires Excel with a modern WebView and add-in sideloading enabled, Node.js 20+, and a running Hermes gateway with the api_server platform enabled; automated installation is Windows-only, with Mac support manual and still being qualified.

https://github.com/lEWFkRAD/hermes-excel-sidecar

hermes-pluginexceloffice-addinbridge

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