A Google Antigravity plugin that connects the agent to the Semrush MCP server and bundles reusable SEO workflows built on top of it: keyword research, technical audits, backlink and competitor analysis, SERP analysis, content briefs, and structured data.
- Semrush MCP server — the remote server at
https://mcp.semrush.com/antigravity/v2/mcpthat provides live Semrush data and tools. It connects through Semrush's own sign-in flow, so there is no API key to paste. - Skills — Markdown instruction sets that teach the agent how to complete one specific task the same way every
time. Each skill lives in
skills/<skill-name>/SKILL.mdand is also available as/<skill-name>in chat.
| Category | Skill | What it does |
|---|---|---|
| Technical SEO | technical-seo-audit | Audit crawlability, Core Web Vitals, schema, and on-page signals in one pass |
| Technical SEO | internal-link-audit | Find orphan pages, broken internal links, depth issues, and missing hubs |
| Technical SEO | schema-markup | Audit, draft, and validate structured data without inventing entity facts |
| Keyword Research | keyword-research | Find keyword ideas with volume, difficulty, intent, and CPC, clustered by topic |
| Keyword Research | content-brief | Turn one keyword into a brief a writer can ship: intent, SERP context, outline, FAQs, linking plan |
| Rankings & SERPs | serp-analysis | Analyze the top 10 for any keyword: format, features, gaps, ranking strategy |
| Backlinks & Authority | backlink-audit | Audit a backlink profile: anchor distribution, toxicity, competitor gaps, broken-link recovery |
| Competitor Research | competitor-gap | Find keyword, content, and link gaps between your domain and your real search competitors |
Using Semrush MCP requires an eligible Semrush subscription with API access. See the Semrush MCP documentation for details.
In the Antigravity app, open Customizations → Plugins, click + Install from URL, and enter this repository's URL or a local path to a checkout.
From the terminal:
agy plugin install <repository-url-or-path>
agy plugin listAfter installing, sign in to Semrush when Antigravity asks you to authorize the MCP server.
Describe the task in plain language — for example, "run a technical SEO audit on example.com" — and the agent will
pick the matching skill and follow its workflow, pulling live data from Semrush as it goes. You can also call a skill
directly, for example /keyword-research.
AI responses may be incomplete or inaccurate. Verify results before using them for decisions, publication, or other critical work.
Licensed under the Apache License 2.0. See NOTICE for attribution requirements.
See CONTRIBUTING.md for how changes to this repository are reviewed and approved.