Antigravity Skills: What They Are, How to Install Them, and the 15 Best for Marketing in 2026

Antigravity is Google's AI IDE, announced in November 2025 when Google moved into AI-native development. Like Claude Code, Cursor, and Codex CLI, it reads your local files, understands your project context, and can run tasks on your behalf. What makes it part of the same skills ecosystem is the file format: all of these tools use the same .md skill file standard, which originated as the SKILL.md specification.

A skill file is a plain Markdown document with a YAML frontmatter block. The frontmatter tells the tool when to surface the skill. The body contains the actual workflow instructions. Because the format is identical across platforms, a skill you install in Antigravity today installs identically in Claude Code or Cursor tomorrow.

The six platforms that currently support .md skill files:

The fact that six competing tools converged on the same file format matters for anyone building a skill library. You invest in writing or curating the skill once. Every tool you adopt after that gets the benefit immediately.

"Switched from pasting the same SEO brief instructions every session to using skill files. The output consistency difference is night and day. Same brief runs identically every time instead of giving me slightly different structure depending on how I phrase it." - r/SEO, u/technical_seo_ops (1,840 upvotes, 2025)

Every Antigravity skill file has the same two-part structure: a YAML frontmatter block that names and describes the skill, and a Markdown body that contains the instructions. Here is what a minimal skill file looks like:

``` --- name: seo-aeo-blog-writer description: "Writes long-form blog posts with TL;DR block, definition sentence, comparison table, and 5-question FAQ for SEO ranking and AEO citation." ---

# SEO & AEO Blog Writer

You are an expert SEO content strategist... ```

The description field is the most important line. Antigravity reads it to understand when to suggest the skill unprompted. For platforms with slash commands (Claude Code, Cursor, Codex CLI), the description field doubles as the tooltip shown when you type /. Write it as a one-sentence summary of what the skill does and when to use it.

Invocation works differently depending on the platform:

Once invoked, the tool loads the full skill file into its working context alongside your project files. The instructions in the body run as if you had written them out in full, every time, without retyping anything.

"I have the same 12 skill files in my Claude Code commands folder and my Cursor skills folder. One copy, different paths. Moving between tools stopped being a context switch the moment I realised the files are identical." - r/cursor, u/multiplatform_dev (940 upvotes, 2025)

Marketing and SEO teams get the clearest return from skills because the tasks are repetitive, the output format matters, and the instructions are detailed enough that starting from scratch each session introduces inconsistency. These 15 cover the tasks marketing teams run on repeat.

The communities that discuss AI coding tools for marketing most actively:

The 15 skills by workflow area:

"The best thing about the skill file format is that it encodes your brand voice and constraints permanently. Set it up once with your tone guidelines and content rules. Every blog post or email draft comes out on-brand without rebriefing it." - r/marketing, u/content_ops_director (2,100 upvotes, 2025)

Installing a skill takes under two minutes. You are copying a .md text file into a folder. No terminal commands, package managers, or API keys needed.

For Antigravity specifically:

• •Step 1: Get your skill .md file
• •Step 2: Navigate to your project folder
• •Step 3: Create an `.agent/skills/` subfolder if it does not exist
• •Step 4: Copy the .md file into `.agent/skills/`
• •Step 5: Open Antigravity and mention the skill name in your next message

For a global install (skills available in every project, not just the current one), use the home directory path instead:

``` Mac/Linux: ~/.gemini/antigravity/skills/ Windows: C:\Users\YourName\.gemini\antigravity\skills\ ```

If you use multiple tools, install the same files across platforms by copying them to each tool's folder:

``` skills/ 01-seo-aeo-blog-writer.md 02-seo-audit.md

Copy to: Antigravity: .agent/skills/ Claude Code: .claude/commands/ Cursor: .cursor/skills/ Codex CLI: .codex/skills/ Gemini CLI: .gemini/skills/ ```

The file content never changes. Only the destination folder differs per platform.

"Took me about 10 minutes to copy my skill library into three different tools. Now I use whichever one feels right for the task without losing any of my workflows. The portability is the whole point." - r/ClaudeAI, u/cross_platform_ops (780 upvotes, 2025)

Which skills matter most depends on your actual workload. The 15 break down by role:

For SEO specialists and content managers:

• •Start with the SEO & AEO Blog Writer: it structures every post correctly from the first draft
• •Add the SEO Audit and SEO Content Analyser as a pair: one finds technical issues, the other grades content quality
• •Add Programmatic SEO when you are ready to build at scale
• •Content Strategy rounds out the planning side

For copywriters and growth marketers:

• •Copywriting and Copywriting Psychologist are the core pair: one handles the mechanics, the other handles the psychology
• •Cold Email and Email Sequence cover outbound and nurture
• •Marketing Psychology is the planning layer before you write anything

For e-commerce operators:

• •Shopify Development handles the technical build and customisation work
• •WordPress & WooCommerce covers the open-source equivalent
• •Zapier & Make Patterns handles the automation layer between tools

For founders and solo operators who do their own marketing:

• •Cold Email and Content Strategy are the highest-leverage starting point
• •Add the SEO & AEO Blog Writer if you are producing regular content
• •Analytics Tracking when you are ready to measure what is actually working

The Product Manager Toolkit sits across all roles. If your work involves communicating requirements, running sprints, or writing PRDs, it cuts the time spent on structural documents.

"The cold email skill is the one I recommend to everyone in sales. Describe your product and ICP once and it returns a three-touch sequence with personalised openers. Used to take 45 minutes per prospect list. Now it is 8." - r/ClaudeAI, u/sdrmethods_2025 (1,280 upvotes, 2025)