hermes-nextcloud

Connect your self-hosted Nextcloud instance to Hermes Agent. Manage files, notes, calendar events, tasks, and contacts directly from any conversation. No plugins, no external services, just your data.

Status

What is this?

hermes-nextcloud is a skill for Hermes Agent that wraps the Nextcloud WebDAV, Notes API, CalDAV, and CardDAV protocols into a command-line interface. If you run Nextcloud on your own VPS or home server, you can read and write your data without opening a browser.

The skill communicates over HTTPS only. No desktop client or third-party sync service is required.

Features

Files: Upload, download, list, delete, and move files through Nextcloud WebDAV.

Notes: Create, list, edit, and delete notes using the Nextcloud Notes API (requires the Notes app on your Nextcloud instance).

Calendar: List calendars, create and edit events via CalDAV. Times are handled in your configured timezone.

Tasks: Manage Nextcloud Tasks calendar items (tasks stored in a Tasks calendar).

Contacts: Browse and search your address books, view contact cards, export as vCard.

Setup: Guided setup walks you through configuring your URL, username, and app password. Nothing is stored in plain text.

Requirements

• A running Nextcloud instance (any recent version)
• An App Password created in Nextcloud Settings → Security → App passwords
• Python 3.8 or newer
• Hermes Agent

Installation

If Hermes Agent is running on the same machine where this repo is cloned:

cd ~/.hermes/skills/productivity
git clone https://github.com/adnw-vinc/hermes-nextcloud.git nextcloud

Alternatively, copy the nextcloud/ directory into your skills folder manually.

Setup

Run the guided setup:

python3 ~/.hermes/skills/productivity/nextcloud/scripts/setup.py

The script will ask for:

1. Your Nextcloud URL (e.g. https://nc.example.com)
2. Your Nextcloud username
3. An App Password (not your login password)

It validates the credentials and saves them to ~/.hermes/nextcloud.env.

Manual configuration

export NEXTCLOUD_URL="https://your-nextcloud.example.com"
export NEXTCLOUD_USER="your_username"
export NEXTCLOUD_TOKEN="your_app_password"
export NEXTCLOUD_TIMEZONE="Europe/Prague"   # optional, defaults to UTC

Creating an App Password

1. Log in to your Nextcloud instance
2. Go to Settings → Security → App passwords
3. Click Add new app password
4. Give it a name (e.g. hermes-agent) and click Create
5. Copy the password. It is shown only once.

Usage

All commands are called through the Python script:

NC="python3 ~/.hermes/skills/productivity/nextcloud/scripts/nextcloud_api.py"

Files

# List files in a directory
$NC files list --path /Documents

# Upload a file
$NC files upload --local ./report.pdf --remote /Documents/report.pdf

# Download a file
$NC files download --remote /Documents/report.pdf --local ./report.pdf

# Delete a file
$NC files delete --path /Documents/old.txt

Notes (requires Nextcloud Notes app)

# List all notes
$NC notes list

# Create a note
$NC notes create --title "Meeting notes" --content "Discussed the Q3 roadmap."

# Edit a note
$NC notes edit --id 941 --title "Updated title" --content "New content here."

# Delete a note
$NC notes delete --id 941

Calendar

# List calendars
$NC calendar list

# List events in a calendar
$NC calendar list --calendar "Personal"

# Create an event
$NC calendar create \
    --summary "Team standup" \
    --start "2026-07-01T09:00:00Z" \
    --end "2026-07-01T09:30:00Z" \
    --calendar "Work"

# Edit an event
$NC calendar edit --uid <event-uid> --summary "New title"

# Delete an event
$NC calendar delete --uid <event-uid>

Tasks

# List all tasks
$NC tasks list

# Create a task
$NC tasks create --summary "Review pull request" --due "2026-07-05"

# Complete a task
$NC tasks complete --uid <task-uid>

# Edit a task
$NC tasks edit --uid <task-uid> --summary "Updated summary"

Contacts

# List address books
$NC contacts list

# List contacts in an address book
$NC contacts list --addressbook "Personal"

# Get a contact by UID
$NC contacts get --uid <contact-uid>

# Export a contact as vCard
$NC contacts export --uid <contact-uid> --local ./contact.vcf

Verify the setup

$NC check

Project structure

hermes-nextcloud/
├── README.md
├── LICENSE
├── SKILL.md                          # Skill manifest and documentation
└── scripts/
    ├── nextcloud_api.py              # Main CLI — all commands
    ├── setup.py                      # Guided credential setup
    └── requirements.txt              # Python dependencies (python-caldav)

The SKILL.md file is the skill manifest. Hermes Agent loads it automatically when the skill is installed.

Security

Credentials are stored in ~/.hermes/nextcloud.env with restricted file permissions (mode 0600). This file is never committed to git or shared anywhere.

The script only accepts an App Password, not your main Nextcloud password. App passwords can be revoked individually from Nextcloud Settings without affecting your main login.

Contributing

Contributions are welcome. If you find a bug or want a new feature, open an issue or a pull request.

1. Fork the repository
2. Create a branch (git checkout -b fix/something)
3. Make your changes
4. Run a functional test against your own Nextcloud instance
5. Open a pull request

License

MIT License. See LICENSE for the full text.

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