READ + WRITE for office documents & notebooks in DeepSeek Harness — doc_read/doc_write tools (xlsx, pdf, docx, pptx, ipynb) plus MCP server and CLI
READ + WRITE for office documents and Jupyter notebooks inside DeepSeek Harness — and anywhere else your agent runs.
DSH Cowork adds first-class document handling to coding agents:
Format Read Write (v1) --- --- --- xlsx spreadsheets ✅ bounded, cell-addressed windows ✅ create + edit by cell ref ipynb notebooks ✅ cells + inline outputs ✅ create + edit by cell index pdf ✅ text windows (pages) — (v2: form-fill) docx ✅ paragraphs + word count — (v2: generation) pptx ✅ slides + shape ids — (v2: generation)
DeepSeek Harness's built-in read is UTF-8 text only — it cannot open a spreadsheet, a PDF, a slide deck, or a notebook. Claude Code reads PDFs and notebooks natively; Codex has nothing. DSH Cowork closes that gap as an out-of-tree plugin (no fork, no PR needed — the ecosystem path CONTRIBUTING.md recommends).
Two ideas make "Cowork = READ + WRITE" coherent instead of two separate tools:
1. Stable addresses. docread returns cell refs for xlsx (A1, C12) and shape ids for pptx — docwrite consumes them. Line numbers cannot address binary formats; addresses can. 2. Bounded windows, explicit truncation. Every read is capped (pages / rows / slides / cells / bytes). Silent truncation is the cardinal sin: a Truncated: notice always tells you the window was cut short.
Package What it is --- --- packages/core Pure TS, zero DSH deps: sniff → extract → build, windowing, safety caps packages/dsh DSH bundle: docread / docwrite tools (install with dsh plugin add) packages/mcp MCP server over stdio — for Codex, Claude Code, any MCP client packages/cli doc-read / doc-write binaries + SKIL
From the project README.
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