Install Fill Protocol
Pick your agent. Every command is ready to paste.
npx skills add Aperivue/medsci-skills --skill fill-protocolThe open skills CLI detects your agents (Claude Code, Cursor, Codex and 70+ more) and installs to the right folder. Add -g to install globally.
01
Install it
Run the command above, or upload the folder in Claude.
02
Ask naturally
Describe the task. Your agent loads fill-protocol when the request matches its description.
03
Name it if needed
If it does not trigger, say “use the fill-protocol skill”. In Codex, type $fill-protocol.
Fill-Protocol Skill
Core Principles (Do Not Violate)
- Open the existing template — never create from scratch. Use
Document(template_path), notDocument(): rebuilding loses the header logo, custom margins, footer placeholders and page numbering. Replace cell/paragraph text in place; never a singlecell.text = "value"assignment, which erases run-level styles (bold, color, eastAsia font). - Convert .doc → .docx via LibreOffice headless before any editing.
pandoc -f docis not supported;textutilcorrupts table structure (merged cells dropped). - Match cells by left-label text, not row/column coordinates such as
table.cell(2, 1). Templates evolve and coordinate matching breaks silently. - Apply
cantSplitto every filled row so a row never breaks across pages. - For CJK languages, set the
eastAsiafont attribute, not justrun.font.name, or Hangul/Kanji/Hanzi render in fallback fonts. - Validate every fill operation: resolve every
[MISS]line and everyWARN:line ([TABLE-MISS],[SECTION-MISS],[RAW-NEWLINE]) before the filled form is submitted.
Dependencies
Python packages docxtpl python-docx pyyaml are always required. LibreOffice is needed only for a
legacy .doc template (~700 MB on macOS). The bundled setup.sh detects what is missing:
bash ${CLAUDE_SKILL_DIR}/setup.sh check # report what's installed (read-only)
bash ${CLAUDE_SKILL_DIR}/setup.sh install # install missing pieces (asks before each)
When invoking this skill on behalf of a user:
- Skip LibreOffice entirely if the template is already
.docx. - Before calling
doc_to_docx.py, runsetup.sh check. If LibreOffice is missing, ask the user before installing, because the cask is ~700 MB. - Never pass
--yestosetup.sh installunless the user has explicitly authorized unattended installation in this session, because it installs without prompting. - If the user declines, ask them to convert the
.docmanually (Word/LibreOffice/Pages → Save As → .docx) and re-run with the converted file.
Workflow
Step 1 — Convert legacy .doc to .docx (if needed)
python3 ${CLAUDE_SKILL_DIR}/scripts/doc_to_docx.py path/to/template.doc path/to/template.docx
Step 2 — Inspect the template structure
python3 ${CLAUDE_SKILL_DIR}/scripts/inspect_template.py path/to/template.docx
It lists every table, every cell (coordinates and content preview) and every top-level paragraph. Take the exact labels for the YAML from this output.
Step 3 — Author a content YAML
Start from ${CLAUDE_SKILL_DIR}/examples/example_irb_template.yaml. Three fill modes; all keys are
optional.
protections:
korean_font: "맑은 고딕" # CJK font (set to "Noto Sans CJK KR", "SimSun",
# "MS Mincho", etc. for other locales)
cant_split: true # Apply <w:cantSplit/> to every filled row
# Readability options (defaults shown)
blank_between_paragraphs: true # Enter between \n\n chunks
blank_around_section_header: true # Enter above/below filled sections
blank_around_all_section_headers: false # opt-in; also touches untouched sections
normalize_page_breaks: true # empty page-break paragraphs -> pageBreakBefore
# Mode 1 — table key/value (left-label cell → right value cell)
table_kv:
"Study Title": "Multi-center prospective validation of ..."
"Principal Investigator": "Last, First (Department)"
"연구 목적": "본 연구는 ..."
# Mode 2 — section replacement (find numbered header, replace until next header)
section_replace:
"1. Background":
"Hepatocellular carcinoma is the third leading cause of ..."
"4. 연구 배경 및 이론적 근거":
"..."
# Mode 3 — single paragraph in-place text replacement
paragraph_replace:
"Title:":
"Title: Multi-center prospective validation of ..."
Read ${CLAUDE_SKILL_DIR}/references/best_practices.md (Readability knobs) before changing any
readability option from its default.
Content rules: put a reference in only with a /search-lit-confirmed DOI or PMID, otherwise mark
it [UNVERIFIED - NEEDS MANUAL CHECK]; mark any unconfirmed clinical definition, diagnostic
criterion or guideline claim [VERIFY] and ask the user.
Step 4 — Run the fill
python3 ${CLAUDE_SKILL_DIR}/scripts/fill_form.py \
--template path/to/template.docx \
--content content.yaml \
--output path/to/filled.docx
The CLI prints [OK] / [MISS] for every fill operation, a summary, then any WARN: lines.
Investigate every [MISS] and WARN: before submitting (Principle 6).
Every value under table_kv, section_replace and paragraph_replace is written exactly as
typed (012345, 12:30, 1.10, No stay text). An empty value or a list/mapping value stops the
run with exit 2 and names the label; write '' to blank a field on purpose. A section_replace
on a header with no later numbered header replaces everything to the end of the document, and its
[OK] line says so with the number of paragraphs replaced. If a signature/date block or anything
else follows the last section, bound it with section_end (header -> regex matched against the
paragraph that starts the kept block):
section_end:
"18. References": "^Investigator signature"
Step 5 — Visual verification
soffice --headless --convert-to pdf path/to/filled.docx
Without LibreOffice (a .docx template skips it), export the PDF from Word instead. Open the PDF and confirm: page count is sensible, no table row was split across pages, no font fell
back to Times New Roman, all required fields are populated.
Read ${CLAUDE_SKILL_DIR}/references/best_practices.md when a label or section header does not
match, the template has no numbered section headers (section_end), a cell
needs multi-line content, or cells are merged.
Known Limitations
- HWP / HWPX input is not handled directly — convert it to
.docxfirst. - Merged cells: filling a label cell that participates in a vertical merge may overwrite the merged region's content. Test on a copy first.
- Embedded form fields (Word content controls): not supported; plain paragraph and table cell content only.
- Right-to-left scripts (Arabic, Hebrew): untested.
- Last section with no later header: replaced through the end of the document unless a
section_endpattern is given; the filler cannot tell the section body from a trailing block.
Tips for Fill Protocol
- • Start a fresh session after installing so your agent picks up the new skill.
- • This skill ships scripts. Read them before the first run, and run it in a project without secrets first.
- • It bundles reference files. The agent reads them only when needed, so they cost no context until then.
- • It is part of a pack with 30 skills. Install only the ones you need with --skill to keep triggers precise.
- • If two skills overlap, mention the one you want by name.
Questions about Fill Protocol
What does the Fill Protocol skill do?
Use when an institutional Word form (.doc/.docx IRB protocol, ethics application, grant template) must be filled without breaking its styles, tables, fonts or page layout. Renders content drafted by /write-protocol into the template; CJK-aware.
How do I install Fill Protocol?
Run "npx skills add Aperivue/medsci-skills --skill fill-protocol" in your project. The skills CLI installs it for Claude Code, Cursor, Codex and 70+ other agents. In Claude on the web, upload the skill folder as a ZIP under Customize > Skills.
Does Fill Protocol work in Cursor and Codex?
Yes. Fill Protocol uses the open SKILL.md format, so it works in Claude Code, Claude, Cursor, OpenAI Codex, Gemini CLI, GitHub Copilot and other agents that support agent skills.
Is Fill Protocol free?
Fill Protocol is open source on GitHub under the MIT license. It is free to install; check the license before commercial use.
Who made Fill Protocol?
Fill Protocol is published by Aperivue in the Aperivue/medsci-skills repository, together with 29 other skills.

