System Prompts Leaks is a collection of captured system instructions used to guide AI chatbots and coding agents before they receive user messages. It serves researchers and developers studying how different AI assistants are directed.
Getting it into your agent
It runs from inside its repository, so the clone comes first — what it calls does not travel with the file alone.
git clone --depth 1 https://github.com/asgeirtj/system_prompts_leaksnpx agentmods add skills/asgeirtj/system_prompts_leaks/docxWrote this? Show the measurements
A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.
[](https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/docx)<a href="https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/docx"><img src="https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/docx/github.svg" alt="Measured on agentmods" height="20"></a>Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.
<a href="https://agentmods.dev/skills/asgeirtj/system_prompts_leaks/docx"><img src="https://agentmods.dev/badge/skills/asgeirtj/system_prompts_leaks/docx.svg" alt="Reviewed on agentmods" width="80" height="20"></a>What it costs to keep this loaded
Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.
| Model | Per session | Once invoked |
|---|---|---|
| Fable 5.1 | $0.00211 | $0.01933 |
| Opus 5.5 | $0.00084 | $0.00773 |
| Sonnet 5.5 | $0.00042 | $0.00387 |
| Haiku 4.5 | $0.00021 | $0.00193 |
Grade A, and why
docx scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 8d ago.
A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.
Nothing flagged
None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.
Copies of this mod
8 near-identical copies found in the catalogue:
How it starts
The opening of the file, as written. The whole thing — 94 lines — stays where its author put it; the contents beside it link to each section on GitHub.
DOCX creation, editing, and analysis
If you are about to make a new document and this session offers Claude's own docs (a Docs connector, docs skill or Docs artifact type), and the user has neither named Word/.docx/.dotx, asked for tracked changes, nor supplied a .docx/.dotx file to change or use as a template, make the document there instead. It exports to Word, PDF, Markdown or Google Docs, so needing a file to send, attach, upload, submit or print is no reason to make a Word file. A .docx/.dotx given only as source material does not count as supplied. This skill remains the right tool for producing, reading, editing, templating or converting Word files.
A .docx is a ZIP archive of XML files. Choose your approach by task:
| Task | Approach |
|---|---|
| Create a new document | Write a docx (npm) script — see gotchas below |
| Edit an existing document | unzip → edit word/document.xml → zip (docx-js cannot open existing files) |
| Read content | pandoc -t markdown file.docx |
Script paths below are relative to this skill's directory.
Creating with docx-js — gotchas
docx is preinstalled — do not run npm install first; write the script and require('docx') directly. Only if that require fails: npm install docx. The model knows the API; these are the footguns:
- Page size defaults to A4. For US Letter set
page: { size: { width: 12240, height: 15840 } }(DXA; 1440 = 1"). - Landscape: pass portrait dimensions and
orientation: PageOrientation.LANDSCAPE— docx-js swaps width/height internally. - Tables need dual widths: set
columnWidthson the table ANDwidthon every cell, both inWidthType.DXA(PERCENTAGE breaks in Google Docs). Column widths must sum to the table width. - Table shading: use
ShadingType.CLEAR, neverSOLID(renders black). - Lists: never insert
•literally; use anumberingconfig withLevelFormat.BULLET. ImageRunrequirestype:("png","jpg", …).PageBreakmust be inside aParagraph.- Never use
\n— use separateParagraphelements. - TOC: headings must use built-in
HeadingLevel.*; custom heading styles needoutlineLevelset or they won't appear. - Don't use a table as a horizontal rule — use a paragraph bottom border instead.
- Dot-leader / right-aligned-on-same-line: use
PositionalTab(alignment: PositionalTabAlignment.RIGHT,leader: PositionalTabLeader.DOT) inside aTextRun, not literal.or space padding.
What ships with it
60 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.
- LICENSE.txt 1.4 KB
- scripts/__init__.py 1 B runs code
- scripts/accept_changes.py 4.0 KB runs code
- scripts/comment.py 14 KB runs code
- scripts/merge_runs.py 9.2 KB runs code
- scripts/office/helpers/__init__.py 3.3 KB runs code
- scripts/office/helpers/pptx_chart.py 5.7 KB runs code
- scripts/office/helpers/pptx_slide.py 1.6 KB runs code
- scripts/office/helpers/pptx_theme.py 3.4 KB runs code
- scripts/office/schemas/ecma/fouth-edition/opc-contentTypes.xsd 1.9 KB
- scripts/office/schemas/ecma/fouth-edition/opc-coreProperties.xsd 2.5 KB
- scripts/office/schemas/ecma/fouth-edition/opc-digSig.xsd 2.8 KB
- scripts/office/schemas/ecma/fouth-edition/opc-relationships.xsd 1.3 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-chart.xsd 73 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-chartDrawing.xsd 6.8 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-diagram.xsd 50 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-lockedCanvas.xsd 624 B
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-main.xsd 148 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-picture.xsd 1.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-spreadsheetDrawing.xsd 8.7 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/dml-wordprocessingDrawing.xsd 14 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/pml.xsd 82 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-additionalCharacteristics.xsd 1.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-bibliography.xsd 7.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-commonSimpleTypes.xsd 6.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-customXmlDataProperties.xsd 1.2 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-customXmlSchemaProperties.xsd 880 B
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesCustom.xsd 2.5 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesExtended.xsd 3.4 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-documentPropertiesVariantTypes.xsd 7.3 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-math.xsd 23 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/shared-relationshipReference.xsd 1.3 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/sml.xsd 237 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-main.xsd 26 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-officeDrawing.xsd 25 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-presentationDrawing.xsd 535 B
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-spreadsheetDrawing.xsd 5.6 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/vml-wordprocessingDrawing.xsd 3.9 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/wml.xsd 167 KB
- scripts/office/schemas/ISO-IEC29500-4_2016/xml.xsd 4.5 KB
- scripts/office/schemas/mce/mc.xsd 3.1 KB
- scripts/office/schemas/microsoft/wml-2010.xsd 26 KB
- scripts/office/schemas/microsoft/wml-2012.xsd 3.7 KB
- scripts/office/schemas/microsoft/wml-2018.xsd 901 B
- scripts/office/schemas/microsoft/wml-cex-2018.xsd 1.7 KB
- scripts/office/schemas/microsoft/wml-cid-2016.xsd 1002 B
- scripts/office/schemas/microsoft/wml-sdtdatahash-2020.xsd 600 B
- scripts/office/schemas/microsoft/wml-symex-2015.xsd 745 B
- scripts/office/soffice.py 5.8 KB runs code
- scripts/office/validate.py 6.0 KB runs code
- scripts/office/validators/__init__.py 336 B runs code
- scripts/office/validators/base.py 33 KB runs code
- scripts/office/validators/docx.py 17 KB runs code
- scripts/office/validators/pptx.py 16 KB runs code
- scripts/office/validators/redlining.py 18 KB runs code
- scripts/templates/comments.xml 2.5 KB
- scripts/templates/commentsExtended.xml 2.5 KB
- scripts/templates/commentsExtensible.xml 2.6 KB
- scripts/templates/commentsIds.xml 2.6 KB
- scripts/templates/people.xml 115 B
What this file has done since we first saw it
Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.
- 8d ago Changed · +2 lines 620b86152193
- 19d ago Changed · -14 tokens per session 4eb1429e75a5
- 24d ago First seen · 92 lines · 225 tokens per session scan A 62a566a86aea
docx is a skill published in the GitHub repository asgeirtj/system_prompts_leaks (69,759 stars, last pushed today), licensed CC0-1.0. It adds 211 tokens to every session and 1,933 once invoked, about $0.0008 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-09-23.
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