01Directory of useful tools

Find the right tool
for the job.

Apps, skills, MCP servers, CLIs, APIs and more. Find useful tools, check their setup and go straight to the source.

A fresh mix of tools on each visit.

8 tools shown

Account Switcher (acswi)

Sign in to each account once, then switch a Windows app or CLI between them in one click or one command, from a window, the tray or the terminal.

OperationsCLIPackagedCommunity boost

Tier List Studio

A free tier list maker in your browser: drag in your own images, snap or place them freely, add notes and export a PNG.

CreativeOtherPackagedCommunity boost

Harneloop

Helps an AI agent learn from what went wrong: inspect real results, trace the mistake and keep only harness changes a test supports.

CodingCLIPackaged

Paper Unfold Mesh

Procedural paper that crumples, folds or rolls and opens frame by frame on a canvas, with writing that bends with the sheet.

CreativeSkillPackagedCommunity boost

02New submissions welcome

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Built a useful skill, MCP server, CLI, API or agent tool? We’d love to list it. Share your repository and setup instructions from your account or through your agent.

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Tools for any agent workflow.

ToolIndex is an open directory of tools AI agents can use: skills, MCP servers, command-line tools, APIs, libraries, plugins, workflows and harnesses. Each listing links directly to its source and explains access, installation, configuration, licensing and review scope.

How the library works →