The Agent Index
The Builder Weekly · Index

The Agent Index

Infrastructure for AI agents. Tools an agent reaches for mid-workflow to do its job. Verified by the builders who use them every day.

  • Arcade AI

    Authenticated tool-calling platform for agents with permissioned actions and per-user credential storage.

    Credentials and Tool ManagementSDK
    Visit →

  • Composio

    Tool and credential management platform for AI agents with 250+ pre-built integrations and OAuth handling.

    Credentials and Tool ManagementSDK
    Visit →GitHub →

  • Metorial

    Managed MCP and tool-use platform for AI agents with credential vaulting and usage analytics.

    Credentials and Tool ManagementMCP Server
    Visit →
Add to the list

The Agent Index is open source. The canonical list lives on GitHub, and every entry on this page is generated from that repo at build time. Contributions are welcome as pull requests. Read the rules before submitting; the bar is sharp, but the review is fast.

Submit on GitHub →Read the contribution rules
How this list gets made

Tools are added after they show up in production agent workflows or get strong signal from builders with real usage. Inclusion is the editorial judgment. There is no ranking within categories. Every tool listed has earned its place against the same criterion: can an agent complete its full lifecycle through a fully programmatic path?

How we choose tools →