DOES YOUR MCP
SERVER WORK?

We gave 24 MCP servers real jobs and had four different agents try them, in sandboxes, with every attempt logged. The verdict below is each server's worst agent score, because your users won't all use the agent it was tuned for.

LOOK UP A SERVER >GET MINE GRADED
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Playwright MCP (Microsoft)

IT WORKS.
BROWSER · Claude Code: 100%

Chrome DevTools MCP (Google)

IT WORKS.
BROWSER · Claude Code: 100%

agent-browser (Vercel Labs)

IT WORKS.
BROWSER · Claude Code: 100%

@agent-infra/mcp-server-browser (ByteDance)

IT WORKS.
BROWSER · Claude Code: 100%

Puppeteer (archived official)

IT WORKS.
BROWSER · Claude Code: 100%

Fetch (official)

IT WORKS.
WEB FETCH · Claude Code: 100% · Codex CLI: 100%

Fetch Server (zcaceres)

IT WORKS.
WEB FETCH · Claude Code: 100% · Codex CLI: 100%

Scrapling MCP

IT WORKS.
WEB FETCH · Claude Code: 100% · Codex CLI: 100%

MCP Toolbox for Databases (Google)

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

mcp-alchemy

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

mcp-server-mysql (benborla)

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

mysql_mcp_server (designcomputer)

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

MotherDuck / DuckDB MCP

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

postgresql-mcp-server (HenkDz)

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

server-postgres (official, deprecated)

IT WORKS.
DATABASES · Claude Code: 100% · Codex CLI: 100%

Postgres MCP Pro (crystaldba)

IT WORKS.
DATABASES · Claude Code: 96% · Codex CLI: 100%

fetcher-mcp

IT WORKS.
WEB FETCH · Claude Code: 94% · Codex CLI: 100%

mcp-searxng (web_url_read)

IT WORKS.
WEB FETCH · Claude Code: 94% · Codex CLI: 94%

DBHub (Bytebase)

IT WORKS.
DATABASES · Claude Code: 94% · Codex CLI: 100%

Playwright MCP (ExecuteAutomation)

IT WORKS.
BROWSER · Claude Code: 94%

browser-use (MCP mode)

IT WORKS.
BROWSER · Claude Code: 94%

Lightpanda

IT WORKS.
BROWSER · Claude Code: 91%

DuckDuckGo MCP (fetch_content)

IT WORKS.
WEB FETCH · Claude Code: 88% · Codex CLI: 88%

open-webSearch (fetchWebContent)

MOSTLY WORKS.
WEB FETCH · Claude Code: 82% · Codex CLI: 88%
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NOT ON THE LIST?

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