xlsx
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
Skill by jd-opensource
Install
Works with Claude Code, Claude apps, Codex, Cursor, Gemini CLI, GitHub Copilot, VS Code, OpenCode, Goose, Windsurf. Read the repository before you give any tool access to your data.
npx agentmarket install skill/jd-opensource-xlsx
Asks which of your tools to add it to (Claude Code, Codex, Cursor, VS Code, Windsurf, Gemini CLI, Claude Desktop) and shows the change first. See https://agentmart.dev/cli.
Get the weekly diff
The weekly diff: one email a week with new agent tools, notable updates and grade changes, plus security alerts for tools you follow. Double opt-in, one-click unsubscribe.
About
Use cases: spreadsheets, data, writing
Reviews
Write a reviewNo reviews yet. Installed it? Reviews come from verified installers only. How reviews work
Permissions: not checked yet.
What's inside
- Skill name
xlsx- Description
- Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization. When Claude needs to work with spreadsheets (.xlsx, .xlsm, .csv, .tsv, etc) for: (1) Creating new spreadsheets with formulas and formatting, (2) Reading or analyzing data, (3) Modify existing spreadsheets while preserving formulas, (4) Data analysis and visualization in spreadsheets, or (5) Recalculating formulas
- License
- Proprietary. LICENSE.txt has complete terms
- Instructions
- 285 lines in SKILL.md · view on GitHub
Before installing
- Ships executable scripts
Files (3)
- LICENSE.txt
- SKILL.md
- recalc.py
The license isn't open source, so the instructions aren't shown here. Read SKILL.md on GitHub
More from jd-opensource/JoySafeter
- 0.697score
pentest-whitebox-code-review
jd-opensource
Source code security audit using backward taint analysis, slot type classification, render context verification, and 3-phase parallel review producing an…
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-recon-attack-surface
jd-opensource
White-box attack surface mapping — correlate external scans, browser exploration, and source code into structured endpoint inventory, role architecture, and…
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-secrets-exposure
jd-opensource
Discover hardcoded credentials, leaked API keys, exposed configuration files, sensitive data in artifacts, and information disclosure via error handling.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-supply-chain
jd-opensource
Software supply chain security — dependency confusion, CI/CD pipeline attacks, lockfile integrity, and build artifact verification.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-mobile-app
jd-opensource
OWASP Mobile Top 10 security testing for Android and iOS — local storage, certificate pinning bypass, IPC abuse, and binary protections.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-api-deep
jd-opensource
Deep OWASP API Security Top 10 testing for REST, GraphQL, gRPC, and WebSocket APIs — BFLA, mass assignment, rate limiting, and unsafe consumption.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-business-logic
jd-opensource
Business logic vulnerability testing — workflow bypass, payment manipulation, state machine abuse, and function limit circumvention per WSTG-BUSL.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-client-advanced
jd-opensource
Advanced client-side attacks — CORS misconfiguration, WebSocket security, clickjacking, postMessage abuse, CSS injection, and browser storage vulnerabilities.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-config-hardening
jd-opensource
Security header auditing, TLS configuration testing, HTTP method analysis, CSP bypass assessment, and deployment hardening verification.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-exploit-validation
jd-opensource
Proof-driven exploitation with 4-level evidence system, bypass exhaustion protocol, mandatory evidence checklists, and strict…
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-ai-llm-security
jd-opensource
AI/LLM application security testing — prompt injection, jailbreaking, data exfiltration, and insecure output handling per OWASP LLM Top 10.
SkillCFreshness: C★ 315Claude Code +9 - 0.696score
planning-with-files
jd-opensource
Implements Manus-style file-based planning for complex tasks.
SkillCFreshness: C★ 315Claude Code +9
Signals
- Stars
- 315
- Forks
- 56
- Open issues
- 17
- Last commit (this folder)
- Feb 10, 2026 (8 months ago)
- Last release
- Jul 2, 2026 (3 months ago)
From GitHub (fetched Oct 24, 2026).
Details
- License
- Proprietary. LICENSE.txt has complete terms
- Repository
- github.com/jd-opensource/JoySafeter
- First seen
- Oct 24, 2026
- Last checked
- Oct 24, 2026
- Source
- GitHubgithub-graphql
Same skill elsewhere
Copies of this SKILL.md published by others; search shows only one of them.
- 0.832score
xlsx
snykOfficial
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillAFreshness: A★ 3.2KClaude Code +9 - 0.312score
xlsx
CommandCodeAI
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillDFreshness: D★ 137Claude Code +9 - 0.294score
xlsx
michaelboeding
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillDFreshness: D★ 30Claude Code +9 - 0.282score
xlsx
syleeVeluga
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: CClaude Code +9 - 0.282score
xlsx
chengdana
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: CClaude Code +9 - 0.269score
xlsx
rafaelcalleja
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillDFreshness: D★ 4Claude Code +9 - 0.268score
xlsx
benchflow-ai
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: C★ 1.9KClaude Code +9 - 0.268score
xlsx
benchflow-ai
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: C★ 1.9KClaude Code +9 - 0.268score
xlsx
benchflow-ai
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: C★ 1.9KClaude Code +9 - 0.268score
xlsx
benchflow-ai
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: C★ 1.9KClaude Code +9 - 0.268score
xlsx
benchflow-ai
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: C★ 1.9KClaude Code +9 - 0.268score
xlsx
benchflow-ai
Comprehensive spreadsheet creation, editing, and analysis with support for formulas, formatting, data analysis, and visualization.
SkillCFreshness: C★ 1.9KClaude Code +9
More from jd-opensource
- 0.697score
pentest-ai-llm-security
jd-opensource
AI/LLM application security testing — prompt injection, jailbreaking, data exfiltration, and insecure output handling per OWASP LLM Top 10.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-api-deep
jd-opensource
Deep OWASP API Security Top 10 testing for REST, GraphQL, gRPC, and WebSocket APIs — BFLA, mass assignment, rate limiting, and unsafe consumption.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-business-logic
jd-opensource
Business logic vulnerability testing — workflow bypass, payment manipulation, state machine abuse, and function limit circumvention per WSTG-BUSL.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-client-advanced
jd-opensource
Advanced client-side attacks — CORS misconfiguration, WebSocket security, clickjacking, postMessage abuse, CSS injection, and browser storage vulnerabilities.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-config-hardening
jd-opensource
Security header auditing, TLS configuration testing, HTTP method analysis, CSP bypass assessment, and deployment hardening verification.
SkillCFreshness: C★ 315Claude Code +9 - 0.697score
pentest-exploit-validation
jd-opensource
Proof-driven exploitation with 4-level evidence system, bypass exhaustion protocol, mandatory evidence checklists, and strict…
SkillCFreshness: C★ 315Claude Code +9
Cite this page
xlsx skill. Agent Mart. https://agentmart.dev/skills/jd-opensource-xlsx (last updated 2026-10-24)