01
Skills, not one giant prompt
Each concern gets its own skill with its own instructions and tools, so a technical crawl, a schema check and a content review stay independently useful and independently testable.
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ProSEO
An open-source suite of 32 SEO skills for Claude Code that runs a full search programme end to end, from technical audits to AI-search visibility.
Overview
ProSEO turns SEO from a pile of one-off checks into a staged programme an AI agent can actually run. Built on Anthropic's Claude Agent SDK, it ships 32 skills, 18 sub-agents that work in parallel and 53 Python tools, organised into a seven-stage lifecycle that carries a site from discovery through to measurement and iteration.
The Challenge
What made it hard.
SEO tooling is fragmented. Crawlers, keyword tools, schema validators and rank trackers each solve a slice, and nobody stitches the slices into a repeatable programme, so the same audit gets improvised from scratch every time.
Agents make that worse before they make it better: a single prompt cannot hold a technical audit, content review, local presence and AI-search visibility at once without losing the thread.
Approach
How I solved it.
02
Sub-agents working in parallel
Eighteen specialist sub-agents fan out across a site at once, each returning structured findings, which keeps a full audit within one context instead of serialising every check.
03
A lifecycle that holds state
Seven stages, Discover through Iterate, track progress between sessions so a programme resumes where it left off rather than restarting from an empty page.
What I Built
Shipped in the box.
- ✓32 skills covering technical, content, schema, local, e-commerce and international SEO
- ✓18 parallel sub-agents returning structured findings
- ✓53 Python tools running in isolated environments
- ✓Seven-stage lifecycle with state carried between sessions
- ✓GEO analysis for AI Overviews, ChatGPT and Perplexity visibility
- ✓Integrations for Search Console, PageSpeed, CrUX and backlink data
Outcome
Where it landed.
32
Skills shipped
18
Parallel sub-agents
Open
Source
Stack
Claude Agent SDKClaude CodePythonTypeScriptSEO APIsOpen Source
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