# SkillMaxx

> SkillMaxx is an independent directory of 428 agent skills, plugins and MCP servers. Each listing shows install commands and compatibility for Claude Code, Codex, Grok Build, Cursor and Pi, based on official docs and sandboxed install tests (910 of 1070 tests passed in the latest run). Data checked 2026-11-07.

How we test: we pull add-ons from public lists (official Claude Code, Codex and Grok Build marketplaces, MCP reference servers, npm), run the real install command in each supported agent's CLI in a clean sandbox with no credentials, re-run nightly (retrying each failed install once and calling something broken only after two failing nights), and publish pass/fail with a log excerpt for every result. Latest run 2026-11-14: 427 add-ons, 1070 install tests, 910 passed, 160 failed. Limits: tested only in agents that support that add-on type; "pass" means it installs and loads, not that every feature was exercised.

Statuses: "Tested" = installed and loaded by our harness in a sandbox with no credentials; "Verified from docs" = an official source documents the install; "Failed" = the hands-on check didn't pass; "Not yet tested" = no docs or test yet.

## Key pages
- [Directory home](https://skillmaxx.gilventures.ai/): search all skills and filter by agent
- [Compatibility matrix](https://skillmaxx.gilventures.ai/matrix/): every skill × 5 agents
- [How we test](https://skillmaxx.gilventures.ai/how-we-test/): nightly install-testing methodology, limits and FAQ
- [Is it safe to install today?](https://skillmaxx.gilventures.ai/reports/latest/): always-current nightly results with a per-agent lookup for every add-on. Statuses: pass, needs your API key (failed only for lack of credentials), pending (one bad night, re-checked), broken (failed two nights running), flaky (flip-flopping). Latest run 2026-11-14: 910/1070 passed, 25 need a key, 133 broken, 2 pending
- [Weekly install scorecards](https://skillmaxx.gilventures.ai/reports/week/): pass-rate trend chart and agent reliability ranking per ISO week; latest week 2026-46, most reliable agent Claude Code (91.9%). The free weekly newsletter (Tuesdays) carries this scorecard
- [Daily report archive](https://skillmaxx.gilventures.ai/reports/): dated nightly pages (web only, not emailed, not indexed; use /reports/latest/ for the current answer)
- [How it works](https://skillmaxx.gilventures.ai/how-it-works/): methodology and status definitions
- [Machine-readable index](https://skillmaxx.gilventures.ai/index.json): all skills as JSON

## Guides
- [Best MCP servers that actually work in Cursor](https://skillmaxx.gilventures.ai/guides/best-mcp-servers-cursor/)
- [What actually installs in Grok Build](https://skillmaxx.gilventures.ai/guides/what-installs-in-grok-build/)

## Newsletter
- [SkillMaxx Weekly archive](https://skillmaxx.gilventures.ai/newsletter/)

## Optional
- [Submit a skill](https://skillmaxx.gilventures.ai/submit/)
- [Advertise](https://skillmaxx.gilventures.ai/advertise/)