Comparison

experiment-protocol vs Chrome DevTools MCP

experiment-protocol is no longer listed on any marketplace we read: these are its last known data, as of 2026‑10‑16.

experiment-protocol is a plugin bundle for AI coding tools published by iowarp. No marketplace we read lists it any more. Chrome DevTools MCP is an MCP server published by ChromeDevTools. Marketplaces we read that list it: 5 (Official MCP Registry, Claude Code: claude-plugins-official, Copilot CLI: github/awesome-copilot, Community GitHub marketplaces, Claude Code: claude-plugins-community). As of our marketplace pass on 2026-10-19. A plugin in this pair is no longer listed on any marketplace we read, so search engines are asked not to index the page.

Where each is published

Where each is published
Marketplace	experiment-protocol	Chrome DevTools MCP
Community marketplace iowarp/clio-kit	Removed on 2026-10-16 Version: 0.3.1 Forks (GitHub): 5 Stars (GitHub): 8 Not marked · First seen 2026-10-13	Not listed
Official MCP Registry	Not listed	Listed Version: 1.11.0 Downloads/month (npm): 7 493 150 Downloads/week (npm): 1 060 392 Forks (GitHub): 6 984 Stars (GitHub): 53 815 Not marked · First seen 2026-10-11
Claude Code: claude-plugins-official	Not listed	Listed Version: 1.11.0 Forks (GitHub): 6 984 Stars (GitHub): 53 815 Not marked · First seen 2026-10-11
Copilot CLI: github/awesome-copilot	Not listed	Listed Version: 1.0.1 Forks (GitHub): 6 984 Stars (GitHub): 53 815 Not marked · First seen 2026-10-11
Claude Code: claude-plugins-community	Not listed	Listed Version: 1.6.0 Forks (GitHub): 6 984 Stars (GitHub): 53 815 Not marked · First seen 2026-10-11

Each figure is the marketplace's own and is never added up across marketplaces. A marketplace that publishes no figure shows none: no number is not zero.

The facts side by side

experiment-protocol vs Chrome DevTools MCP
Fact	experiment-protocolno longer listed · 2026-10-16	Chrome DevTools MCP
Marketplaces that list it (differs)	0	5
Stars (GitHub) (differs)	8	53 815
Forks (GitHub) (differs)	5	6 984
Last release (differs)	Not published	2026-10-16
Where it runs (differs)	Installs as a plugin bundle	On your machine (chrome-devtools-mcp)
Transport (differs)	Not stated	stdio
Tools it declares	Not published	Not published
Environment variables it asks for	Not published	Not published
Parts of the bundle (differs)	Not published	8
Licence	Apache-2.0	Apache-2.0
Repository (differs)	github.com/iowarp/clio-coder	github.com/chromedevtools/chrome-devtools-mcp
Changes in the last 7 days (differs)	4	16
First seen (differs)	2026-10-13	2026-10-11

Lines where the two differ have a tinted background and bold values. No value is marked better or worse: a plugin no marketplace lists any more is shown with its last known data, which we do not rank against current figures.

What to use instead of experiment-protocol

Plugins still listed whose own names, descriptions, tools and skills are closest in meaning to it. Comparable, not endorsed.

insight-blueprint

Hypothesis-driven data analysis workflow and catalog MCP server

by etoyama · Plugin bundle

Listed on: Claude Code: claude-plugins-community · Describes nearly the same job
popper-probe

A research companion based on Karl Popper's philosophy of falsification that interrogates your hypotheses to find what would prove them wrong. It acts like an adversarial…

by mashathepotato · Plugin bundle

Listed on: Claude Code: claude-plugins-community · Describes nearly the same job
preflight

Know exactly where your system breaks before you ship. Scans codebases, traces service calls, and simulates what happens when real users hit your system. Finds bottlenecks, cost…

by Nancy-Chauhan · Plugin bundle

Listed on: Claude Code: claude-plugins-community · Describes nearly the same job
ResiliReplay

Run bounded, deterministic MCP reliability tests and generate executable regressions.

by aliengineering-byte · MCP server

Listed on: Official MCP Registry · Describes nearly the same job

Its card, with similar plugins by marketplace

What each says it does

experiment-protocol

In its own words, on Community GitHub marketplaces:

Pre-registers a performance study, numerical comparison, parameter sweep, or benchmark: thresholds, tolerances, environment pins, and verdict conditions locked into the validation contract before any measurement. Not for diagnosing a stalled bug; use scientific-debugging.

Chrome DevTools MCP

In its own words, on Official MCP Registry:

MCP server for Chrome DevTools

How to run each

experiment-protocol

No data for an automatic command: what its marketplaces declare does not say unambiguously how to connect it.

Chrome DevTools MCP As a local MCP server: npm package

Claude Code

claude mcp add --transport stdio chrome-devtools-mcp -- npx -y chrome-devtools-mcp

Commands built only from what the marketplaces declare; the full set for every client is on each card.

Tools each declares

Neither one's marketplaces publish a list of tools, so there is nothing to compare.

Settings each asks for

Neither one's marketplaces publish the settings it asks for.

What it can do: experiment-protocol · What it can do: Chrome DevTools MCP · Compare two other plugins

Data comes from public marketplace files in GitHub repositories of their authors. Data comes from the Official MCP Registry (registry.modelcontextprotocol.io), CC0 1.0. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-official/blob/HEAD/.claude-plugin/marketplace.json. Data comes from the public marketplace file https://github.com/github/awesome-copilot/blob/HEAD/.github/plugin/marketplace.json. Data comes from the public marketplace file https://github.com/anthropics/claude-plugins-community/blob/HEAD/.claude-plugin/marketplace.json. Figures come from our own regular passes over the marketplaces, last read on 2026-10-19. We publish no contact details for plugin publishers.