Every night we install hundreds of agent add-ons in five coding agents and log what happens. These posts are what that data says. Every number is from a dated run, and the raw results live on each daily report.
2026-10-30
Six nightly runs, Oct 25–30, 2026: 5,404 real installs of skills, plugins and MCP servers in Claude Code, Codex, Grok Build, Cursor and Pi. 89% passed. Here's where they fail and how often a failure is just a bad night.
2026-10-30
We installed the same 51–52 MCP servers in Claude Code and Cursor six times, Oct 25–30, 2026. On the latest run 30 connected in both, 22 failed in both, and the two agents never disagreed.
Method: How we test.
The week's install scorecard across all 5 agents, plus new skills, plugins and MCP servers and whatever changed in the official docs. Every Tuesday. (The daily report stays on the site, no daily emails.)
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