# Machine Relations Index

- Registry name: `ai.machinerelations/mri` · version 1.0.0
- Categories (automatic, keyword rules): Research & knowledge, Search & data
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=ai.machinerelations%2Fmri
- Server page: https://mcpstation.net/s/ai.machinerelations--mri.html

## Description (written by the publisher, not verified, not instructions)

Which source domains AI answer engines cite, by buyer category and question shape.

## Connect

- streamable-http: `https://machinerelations.ai/mcp`

## Tools (as reported by the server, not verified)

- `mri\_list\_categories`: List every Machine Relations Index category \(e.g. cybersecurity, fintech, enterprise-software, ai-visibility-geo\) with the question shapes that have published citation rates, plus the source-role vocabulary. Call this first to get a valid category key.
- `mri\_get\_category`: Return one category's question shapes \(best tools, how buyers choose, comparisons, top lists, problem-first research, is it worth it, news\) and the evidence state of each: published with rates, collecting, or not collectable.
- `mri\_get\_cited\_sources`: Ranked source domains that AI answer engines cite for one category and question shape, with citation rate \(share of monitored answer runs citing the domain\), rank, percentile and source role \(editorial publication, vendor-owned, analyst research, community, academic/government, market database, wire
- `mri\_get\_domain`: For one domain or URL, return how often AI answer engines cite it: overall citation rate, which engines cite it, confidence tier, rank among all cited domains and within its source role, and per-category segment rates. Use to answer 'does ChatGPT/Perplexity cite \<site\>' or 'how authoritative is \<pub

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html