# Page Not Found

The URL `2.21/admin/environments/add/swarm/agent` does not exist.

You might be looking for one of these pages:
- [Install Portainer Agent on Docker Swarm](https://docs.portainer.io/admin/environments/add/swarm/agent.md)
- [Install Portainer Agent on Podman](https://docs.portainer.io/admin/environments/add/podman/agent.md)
- [Install Portainer Agent on Docker Standalone](https://docs.portainer.io/admin/environments/add/docker/agent.md)
- [Install Portainer Agent on your Kubernetes environment](https://docs.portainer.io/admin/environments/add/kubernetes/agent.md)
- [Upgrading Agent-only deployments](https://docs.portainer.io/start/upgrade/tobe/agent.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.portainer.io/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.portainer.io/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/admin/environments/add/swarm/agent.md`)
- Use `Accept: text/markdown` header for content negotiation