- name
- ostrom-energy
- description
- Fetch Ostrom hourly electricity spot prices, find cheapest appliance/EV charging windows, and trigger smart-home actions from price thresholds. Use for Ostrom energy prices, day-ahead electricity prices, optimizing loads, or smart-home price controls.
Ostrom Energy
When to use
Use when the user asks about:
- Current or upcoming electricity spot prices
- Cheapest time to run a load (dishwasher, laundry, EV charging)
- Device actions based on price thresholds
Setup
Set environment variables before running:
export OSTROM_CLIENT_ID="your_ostrom_client_id"
export OSTROM_CLIENT_SECRET="your_ostrom_client_secret"
export OSTROM_ZIP="optional_zip_code"
export OSTROM_ENV="production" # or sandboxOSTROM_ZIP is optional, but recommended to include local taxes/levies and grid/base fees.
For persistent configuration, create ~/.config/ostrom-energy/config.json:
mkdir -p ~/.config/ostrom-energy
cp config.json.example ~/.config/ostrom-energy/config.json
$EDITOR ~/.config/ostrom-energy/config.jsonFor local testing only, copy .env.example to .env in this skill folder and fill values. Never commit real credentials.
The scripts use credentials in this order: 1) environment variables (OSTROM_*), including values loaded from .env by run.sh 2) ~/.config/ostrom-energy/config.json 3) interactive prompt (only if you pass --prompt-missing-secrets)
Run
Always run from this skill directory unless a local wrapper has been installed.
Reliable skill-directory form:
bash run.sh pricesDirect executable from the skill directory:
./ostrom-energy pricesOptional one-time local CLI install:
bash install-local-command.sh
ostrom-energy pricesIf ostrom-energy says command not found, use bash run.sh ... or run bash install-local-command.sh from this folder.
Commands
1) Fetch current and upcoming hourly spot prices
bash run.sh prices --hours 362) Find optimal time for appliance or EV charging
Estimate hours from kwh / power-kw, then find cheapest contiguous block:
bash run.sh optimize \
--kwh 28 \
--power-kw 11 \
--window-start "2026-04-27T18:00:00+02:00" \
--window-end "2026-04-28T08:00:00+02:00"For fixed duration instead of kWh:
bash run.sh optimize --duration-hours 23) Control smart-home devices by price threshold
Use shell commands for your automation endpoint, Home Assistant script, or smart plug CLI.
Dry-run:
bash run.sh control \
--price-below 0.20 \
--on-command "ha service call switch.turn_on --entity_id switch.ev_charger" \
--off-command "ha service call switch.turn_off --entity_id switch.ev_charger"Execute commands:
bash run.sh control \
--price-above 0.40 \
--on-command "ha service call switch.turn_on --entity_id switch.boiler" \
--off-command "ha service call switch.turn_off --entity_id switch.boiler" \
--executeNotes
- The skill obtains an OAuth2 token via client credentials (
/oauth2/token) before each run. - Prices come from
/spot-pricesand are shown as:
- spot = grossKwhPrice (ct/kWh) - taxes = grossKwhTaxAndLevies (ct/kWh) - total = spot + taxes
optimizeandcontrolusetotalconverted to EUR/kWh.- Start with dry-run control mode and verify commands before
--execute.
Safety
- Never commit or publish
.envwith real credentials. - Keep
--executeoff until threshold logic is verified in dry-run. - Treat
--on-commandand--off-commandas trusted input only (they run as shell commands). - By default the scripts are non-interactive; pass
--prompt-missing-secretsonly when you want to enter credentials interactively.
Publisher Checklist (ClawHub)
- Include:
SKILL.md,run.sh,ostrom-energy,install-local-command.sh,ostrom_energy.py,.env.example,config.json.example,.gitignore - Exclude:
.env,__pycache__/, local logs, temporary files - Validate from a clean shell:
- bash run.sh --help - ./ostrom-energy --help - bash install-local-command.sh && ostrom-energy --help - With valid credentials: bash run.sh prices --hours 6 - bash run.sh optimize --duration-hours 2 - bash run.sh control --price-below 0.20 --on-command "echo on" --off-command "echo off"