MCP servers · seo
CRO9 MCP server
CRO9 — site score, real-visitor behaviour, the five gates + open recommendations, briefs, and the human approve/dismiss/release/receipt verbs; plus scan, AI visibility and usage. Account key (cro9_sk_) or a site-scoped key.. Hosted by 0n3: 12 endpoints your AI can call with your own CRO9 account, from Claude, ChatGPT, Cursor, Claude Code, Codex or Gemini CLI. One sign-in, one key per AI, a receipt for every call.
12 endpoints5 categoriesauth: api_keyhosted
What your AI can do with CRO9
Site reports · Where a site stands: score by category, live traffic + forms + friction, the five gates and the bottleneck2
Sites
GET /sitesSite score
POST /site-scoreBriefs · CRO9's proposed changes and the human decision on each — approval is a person's act, recorded as such5
Briefs
POST /briefsApprove a brief
POST /recommendations/{id}/approveDismiss brief
POST /recommendations/{id}/dismissRelease brief
POST /recommendations/{id}/releaseReceipt brief
POST /recommendations/{id}/receiptScans · Scan any URL; AI-visibility score for a page1
Scan
POST /scanUsage · This key's quota1
Usage
GET /usageMore · Everything else this app exposes.3
Behavior
POST /behaviorAnalysis
GET /analysisAi visibility
POST /ai-visibilityInstall in three steps
- Create a free account at 0n3.app and connect CRO9: paste a key or sign in through a door. It lands in your vault, encrypted.
- Open 0n3.app/install, pick your AI. A key is made for that AI alone; copy the line it gives you.
- Ask your AI: whoami. It answers with your connected services. Then ask it to sites in CRO9.
Install (user scope — every project)
claude mcp add --transport http --scope user 0n3 https://0n3.app/mcp --header "Authorization: Bearer <your 0n token>"
Connect CRO9 to
Claude Code + CRO9MCP server + skillClaude (desktop & claude.ai) + CRO9connectorChatGPT + CRO9connector · GPT actionCodex CLI + CRO9MCP serverGemini CLI + CRO9MCP serverCursor + CRO9MCP serverVS Code (Copilot) + CRO9MCP serverWindsurf + CRO9MCP server
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Questions
What can an AI do with the CRO9 MCP server?
12 things: site reports, briefs, scans, usage and more. Every call runs with your own CRO9 connection and lands on a receipt.
Do I need to run anything on my computer?
No. 0n3 is hosted. Connect CRO9 once, install 0n3 into your AI with one line, done.
Where does my CRO9 key go?
Into your 0n3 vault, encrypted, one record per connection. The AI never sees it.