Composio
1000+ toolkits/auth for agents. Open source (MIT), free to use.
FreeOpen source
More for automation
- /loop (built into Claude Code): Runs a prompt or slash command on a repeating interval, for example to keep checking a deploy.
- /schedule (built into Claude Code): Creates scheduled cloud agents that run on a cron schedule, or once at a set time.
- n8n Workflows: Large collection of n8n workflows. Open source (MIT), free to use.