Claude Code Skills·Claude Skills·The open SKILL.md registry for Claude
ClaudSkills / Security / security-misc

Form 8949

Category: Security  ·  Sub-category: security-misc  ·  Last updated:
Use this skill when an individual filer needs to report sales or dispositions of capital assets — stocks, ETFs, mutual funds, bonds, cryptocurrency, NFTs, collectibles, or investment real estate — on IRS Form 8949. Triggers on phrases like "fill out Form 8949", "report stock sales", "report crypto on taxes", "capital gains tax form", "where do I report Bitcoin gains", "wash sale", "1099-B reporting", "1099-DA reporting", "schedule d 8949", "report NFT sale". Do NOT use for: regular dividends or qualified dividends (those go on Schedule B); bond interest or savings interest (Schedule B); sales of property used in a trade or business (Form 4797 — different skill); transactions inside an IRA, 401(k), HSA, or 529 (tax-deferred or tax-free, no 8949 required); a primary residence sale that fully qualifies for the §121 exclusion ($250k single / $500k MFJ).
Security AStatic scan found no risk patternsHow grading works ›

From the source SKILL.md

This skill produces an audit-grade draft of Form 8949 from the user's brokerage 1099-Bs, Forms 1099-DA, and crypto exchange records. It groups transactions into the correct Boxes (A/B/C and, for digital assets, G/H/I for short-term; D/E/F and, for digital assets, J/K/L for long-term), applies wash sale adjustments, computes per-row gain or loss, sums each box, and rolls totals to Schedule D.

What this skill does

Form 8949 is a community-contributed Claude Code skill in the security-misc sub-category. It ships as a SKILL.md file that Claude Code auto-discovers under ~/.claude/skills/form-8949/ and loads when your prompt matches the skill's trigger.

Who uses this skill

The Form 8949 Claude Code skill is built for security engineers, penetration testers, DevSecOps practitioners, and development teams hardening codebases and infrastructure. It's part of ClaudSkills (also referred to as Claude Skills or Claude Code Skills) — the open community-curated registry of 211,000+ SKILL.md files for Anthropic's Claude Code agent and the wider Claude ecosystem (Claude API, Claude Agent SDK).

How to install

Free

Manual install (2 steps)

mkdir -p ~/.claude/skills/form-8949
curl -L https://claudskills.com/skills/form-8949/SKILL.md \
  -o ~/.claude/skills/form-8949/SKILL.md

Or just download SKILL.md directly and drop it into ~/.claude/skills/form-8949/. Claude Code auto-discovers it on next session.

Skills live at ~/.claude/skills/form-8949/SKILL.md on macOS/Linux, or %USERPROFILE%\.claude\skills\form-8949\SKILL.md on Windows. See the full install guide for step-by-step instructions.

Telegram

📱 Install from your phone or desktop Telegram

Open @claudskills_bot on Telegram, tap Open Desktop App, and the desktop app installs this skill for you. Or share the bot link with a colleague — they get the same one-tap install. Learn more →

Pro

One-click install via the desktop app

The ClaudSkills desktop app installs any skill directly into ~/.claude/skills/ with one click — no terminal required. Pro starts at $9/mo or $149 lifetime.

Pro

For the full experience including quality scoring and one-click install features for each skill — upgrade to Pro.

See pricing → Download desktop app

Frequently asked questions

How do I install the Form 8949 Claude Code skill?
Install via the ClaudSkills desktop app (one click) or copy SKILL.md from the source repository to ~/.claude/skills/form-8949/SKILL.md and restart Claude Code. Both flows are detailed at claudskills.com/install/.
What does the Form 8949 skill do?
Use this skill when an individual filer needs to report sales or dispositions of capital assets — stocks, ETFs, mutual funds, bonds, cryptocurrency, NFTs, collectibles, or investment real estate — on IRS Form 8949. Triggers on phrases like "fill out Form 8949", "report stock sales", "report crypto on taxes", "capital gains tax form", "where do I report Bitcoin gains", "wash sale", "1099-B reporting", "1099-DA reporting", "schedule d 8949", "report NFT sale". Do NOT use for: regular dividends or qualified dividends (those go on Schedule B); bond interest or savings interest (Schedule B); sales of property used in a trade or business (Form 4797 — different skill); transactions inside an IRA, 401(k), HSA, or 529 (tax-deferred or tax-free, no 8949 required); a primary residence sale that fully qualifies for the §121 exclusion ($250k single / $500k MFJ).
Is this skill free to install?
Yes. ClaudSkills is an open registry — every skill keeps its source repository's license, and manual install via copy is free. ClaudSkills Pro ($9/mo, $79/yr, or $149 one-time) adds one-click install via the desktop app and a multi-signal Quality Score.
When should I use the Form 8949 skill?
Use Form 8949 when your Claude Code task falls under the Security category — specifically in the security misc area. Claude Code auto-discovers installed skills and invokes the right one based on the task description, so you can also ask Claude directly (e.g. "use Form 8949" or describe the task and let Claude pick). Browse related skills at /category/security/.
What is a Claude Code skill and how does the Form 8949 skill fit in?
A Claude Code skill is a SKILL.md file that lives under ~/.claude/skills/<name>/ and tells the Claude Code CLI agent how to perform a specific task (instructions, prompts, allowed tools). Skills are auto-discovered at session start. Form 8949 is one of 67,000+ skills indexed in the open ClaudSkills catalog, classified under the Security category. Learn more at /learn/what-is-a-claude-skill/.

Attribution & license

Cite this skill

If you reference this skill in a blog post, paper, or documentation, you can cite it as:

APA
jupid-tax. (2026). Form 8949 [Claude Code skill]. ClaudSkills. https://claudskills.com/skills/form-8949/
BibTeX
@misc{form-8949-2026,
  author    = {jupid-tax},
  title     = {Form 8949 [Claude Code skill]},
  year      = {2026},
  publisher = {ClaudSkills},
  url       = {https://claudskills.com/skills/form-8949/}
}

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Security scan

Grade A · scanned 2026-10-25 — free static scan against the OWASP Agentic Skills Top 10.

No risk patterns were found in any of the ten OWASP-aligned categories. How grading works ›

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[![Security: A](https://img.shields.io/badge/Security-A-2e7d32)](https://claudskills.com/skills/form-8949/#security)

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More Security skills

Browse all Security skills in the ClaudSkills registry, or explore these other picks from the same category:

Browse all Security skills → Top 100 skills
Part of ClaudSkills — the open registry for Claude Skills & Claude Code Skills.  ·  What's New  ·  Install guide  ·  About  ·  llms.txt

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