Preview. Every figure on this site is currently a fixture, not a measurement — the live crawl has not run yet. Nothing here describes Google's actual results.
Free key
Model Context Protocol

is MCP registry free

Measured weekly since 2026-W25. 12 observations.

Measured 2026-W36 · 2026-08-31 · google.com, gl=us

2026-W36

This week

AI Overview
Showing
in 11 of 12 weeks
Sources cited
4
2 of them not in the top 10
Organic results
8
returned on page one
Weekly churn
17%
of the top 10 changes each week
AI Overview, week by week
2026-W252026-W36
How much the top 10 moved

Google is answering this query itself, and 2 of the 4 sources it credits do not appear in the ten results below.

Citations

What the AI Overview cites

DomainStatusOrganic position
digitalocean.comCited and ranking2
modelcontextprotocol.ioCited and ranking3
docs.mcp-typescript.comCited, not ranking
developer.mozilla.orgCited, not ranking

A domain marked Cited, not ranking is credited in Google's answer while sitting outside the ten organic results. Across the whole corpus that is true of 38.8% of citations.

Page one

Organic results

#DomainTitleIn the overviewSitelinks
1medium.commedium: is MCP registry freeNot cited
2digitalocean.comdigitalocean: is MCP registry freeCited
3modelcontextprotocol.ioIs MCP registry free — Model Context ProtocolCited4
4craftatlas.netIs MCP registry free — craftatlasNot cited
5mcp.comMCP server: is MCP registry freeNot cited
6dev.toIs MCP registry free in 2026Not cited
7pulsemcp.devIs MCP registry free in 2026Not cited
8docs.cursor-mcp.ioCursor MCP: is MCP registry freeNot cited
Since 2026-W29

Position history

DomainW29W30W31W32W33W34W35W36
modelcontextprotocol.io33343333
medium.com11112111
digitalocean.com22221222
mcp.com44434445
craftatlas.net55555554
dev.to66666666

A dot means the domain was not on page one that week. This is the part no live SERP checker can show you: it needs someone to have been measuring before you asked.

Blocks

Features on this page

AI Overview People Also Ask Related searches Knowledge panel Sitelinks

Filled means Google rendered the block for this query this week. AI Overview, People Also Ask, Related searches, Knowledge panel, Sitelinks — each has its own prevalence across all 4,185 queries.

API

Reproduce this page

Every figure above comes from one call. This is that call — the same endpoint, the same parameters, run once a week.

curl --request GET \
  --url 'https://serpens.p.rapidapi.com/api/v1/search_ai_overview?q=is%20MCP%20registry%20free&gl=us&hl=en&format=json' \
  --header 'x-rapidapi-host: serpens.p.rapidapi.com' \
  --header 'x-rapidapi-key: YOUR_KEY'

Run it on your own queries

Free tier, no card. The AI Overview endpoint returns the overview, its citations, and the organic results in one response.

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One email each Monday covering is MCP registry free: what changed in the results, which domains moved, and where AI Overview switched on or off. Unsubscribe in one click.