MR

Machine Relations Index

ai.machinerelations/mri

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

Yes, your AI can use this right now.Answered a live MCP handshake in 227 ms with no sign-in needed and exposes 4 tools.

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URL: https://machinerelations.ai/mcp

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Pulled straight from the server with tools/list on 2026-10-17.
mri_list_categoriesread-only

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_categoryread-only

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_sourcesread-only

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 distribution). Use to answer 'which publications/sources does ChatGPT or Perplexity cite for <categ

mri_get_domainread-only

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 <publication> as an AI source'.

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