IndexZero documentation
IndexZero is the SEO platform built for AI agents. Keyword research, rank tracking, site audits, backlinks, and AI-visibility measurement, callable over MCP by Claude, ChatGPT, Cursor, or anything you build, and by you in the dashboard.
IndexZero gives an AI agent a real SEO stack. Every tool the dashboard has is also an MCP tool on one endpoint, spending the same credits, scoped to the same projects. You point your agent at it once; after that it runs the research and you read the results.
Getting started
Sign up, create a project, and run your first research in a few minutes.
Connect an agent
Claude, ChatGPT, Cursor, Codex, or your own code, over MCP with OAuth or an API key.
How credits work
What costs credits, what is free, and how the two balances behave.
Tool reference
Every tool with its arguments, defaults, and cost.
What IndexZero does
| Area | What you get |
|---|---|
| Keyword research | Seeds become hundreds of scored keywords with volume, difficulty, CPC, competition, and intent, for any country and language. |
| Domain and backlink research | Estimated traffic, ranked keywords, top pages, SERP competitors, and the link profile of any domain, yours or a competitor's. |
| Local search | Google Business listings, Maps and Local Finder rankings, and the questions people ask on a listing, at a coordinate. |
| Rank tracking | Scheduled or on-demand position checks, national or city-level, desktop and mobile, with a cost estimate before every run. |
| Site audits | A robots-aware crawler over your own site checking 27 issue types, with Lighthouse on a sample of pages. |
| Your own measured data | Search Console, Google Analytics 4, and PostHog reports for a connected project. Free, because it is your data. |
| AI visibility | Whether ChatGPT and Google's AI Overviews mention your brand, your share of voice against competitors, and what the assistants cite instead. |
Two ways in
The dashboard at app.indexzero.site is where you create projects, connect Google and PostHog, manage billing, and read results. Everything an agent does shows up there.
The MCP server at https://app.indexzero.site/mcp exposes 36 tools over Streamable HTTP. Interactive clients authenticate with OAuth; scripts use an API key. See Connect an agent.
Reading these docs as an agent
Every page here is served as markdown too. Append .md to any URL (for example /credits.md), or request the page with Accept: text/markdown. /llms.txt indexes every page and /llms-full.txt is the whole manual in one file.
The product-level machine-readable surface, including the OpenAPI document and the full tool catalog with JSON Schema, is described in Machine-readable reference.