---
name: moonpay-price-alerts-c2d7be9c7425
description: Set up desktop price alerts that notify you when tokens hit target prices. Observe-only — no trading, just notifications.
tags: [alerts, research]
---

# Price alerts

## Goal

Monitor token prices and get desktop notifications when they cross a threshold. Uses `mp token search` for price checks and OS notifications (`osascript`/`notify-send`) for alerts. Observe-only — no funds at risk.

## Prerequisites

- `mp` binary on PATH: `which mp`
- `jq` installed: `which jq`
- macOS: `osascript` (built-in) or Linux: `notify-send` (`sudo apt install libnotify-bin`)

## One-shot alert

"Tell me when SOL drops below $80" — checks every 5 minutes, fires once, then disables itself.

### Script: `~/.config/moonpay/scripts/alert-sol-below-80.sh`

```bash
#!/bin/bash
set -euo pipefail

MP="$(which mp)"
LOG="$HOME/.config/moonpay/logs/alerts.log"
mkdir -p "$(dirname "$LOG")"
log() { echo "[$(date -u +%Y-%m-%dT%H:%M:%SZ)] $*" >> "$LOG"; }

# --- Config ---
TOKEN="So11111111111111111111111111111111111111111"
CHAIN="solana"
SYMBOL="SOL"
TARGET=80
DIRECTION="below"  # "above" or "below"
SCRIPT_NAME="alert-sol-below-80"

# --- Check price ---
PRICE=$("$MP" --json token search --query "$SYMBOL" --chain "$CHAIN" | jq -r '.items[0].marketData.price')

if [ -z "$PRICE" ] || [ "$PRICE" = "null" ]; then
  log "ALERT $SCRIPT_NAME: price fetch failed, skipping"
  exit 0
fi

# --- Compare ---
TRIGGERED=false
if [ "$DIRECTION" = "below" ] && (( $(echo "$PRICE < $TARGET" | bc -l) )); then
  TRIGGERED=true
elif [ "$DIRECTION" = "above" ] && (( $(echo "$PRICE > $TARGET" | bc -l) )); then
  TRIGGERED=true
fi

if [ "$TRIGGERED" = true ]; then
  MSG="$SYMBOL is $DIRECTION \$$TARGET — currently \$$PRICE"
  log "ALERT $SCRIPT_NAME: $MSG"

  # Desktop notification
  if [[ "$OSTYPE" == "darwin"* ]]; then
    osascript -e "display notification \"$MSG\" with title \"MoonPay Alert\" sound name \"Glass\""
  else
    notify-send "MoonPay Alert" "$MSG"
  fi

  # Self-disable (one-shot)
  if [[ "$OSTYPE" == "darwin"* ]]; then
    launchctl unload "$HOME/Library/LaunchAgents/com.moonpay.${SCRIPT_NAME}.plist" 2>/dev/null || true
  else
    crontab -l | grep -v "$SCRIPT_NAME" | crontab -
  fi
  log "ALERT $SCRIPT_NAME: disabled after trigger"
else
  log "ALERT $SCRIPT_NAME: $SYMBOL at \$$PRICE — not triggered ($DIRECTION $TARGET)"
fi
```

### Schedule

Check every 5 minutes:

```bash
# cron (Linux)
*/5 * * * * ~/.config/moonpay/scripts/alert-sol-below-80.sh # moonpay:alert-sol-below-80

# launchd (macOS) — use StartInterval of 300 seconds in the plist
```

Launchd plist at `~/Library/LaunchAgents/com.moonpay.alert-sol-below-80.plist`:

```xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>Label</key>
  <string>com.moonpay.alert-sol-below-80</string>
  <key>ProgramArguments</key>
  <array>
    <string>/bin/bash</string>
    <string>/Users/USERNAME/.config/moonpay/scripts/alert-sol-below-80.sh</string>
  </array>
  <key>StartInterval</key>
  <integer>300</integer>
  <key>StandardErrorPath</key>
  <string>/Users/USERNAME/.config/moonpay/logs/alert-sol-below-80.err</string>
</dict>
</plist>
```

Load: `launchctl load ~/Library/LaunchAgents/com.moonpay.alert-sol-below-80.plist`

**Important:** Replace `USERNAME` with the actual username. Tilde does not expand in plist files.

## Recurring alert

"Alert me every hour while ETH is above $2000" — keeps firing on each check, doesn't self-disable.

Same script as above but remove the self-disable block. The alert fires every time the condition is met, until the user manually removes it.

## Managing alerts

### List active alerts

```bash
# macOS
launchctl list | grep moonpay

# Linux
crontab -l | grep moonpay
```

### Remove an alert

```bash
# macOS
launchctl unload ~/Library/LaunchAgents/com.moonpay.alert-sol-below-80.plist
rm ~/Library/LaunchAgents/com.moonpay.alert-sol-below-80.plist

# Linux
crontab -l | grep -v "alert-sol-below-80" | crontab -
```

### View alert history

```bash
tail -50 ~/.config/moonpay/logs/alerts.log
```

## Tips

- Price checks via `mp token search` are free — no gas costs
- 5-minute intervals are reasonable; don't go below 1 minute
- Use `mp token search --query "SOL" --chain solana` to resolve token addresses
- Alerts log to `~/.config/moonpay/logs/alerts.log` — check this to verify they're running
- The machine must be logged in for notifications and keychain access to work
- `bc -l` handles decimal comparison; if unavailable, use `awk "BEGIN {exit !($PRICE < $TARGET)}"`
- This skill is observe-only — for automated buying/selling, see **moonpay-trading-automation**

## Related skills

- **moonpay-trading-automation** — Automated trading (DCA, limit orders, stop losses)
- **moonpay-discover-tokens** — Research tokens and get current prices
- **moonpay-check-wallet** — Check portfolio before setting alerts


---
Source attribution: jiayaoqijia
Original project: https://github.com/jiayaoqijia/cryptoskill/blob/bcc0d208deaa4f1f80aa0df7ca26c4bed6318918/skills/payments/moonpay-official-moonpay-price-alerts/SKILL.md
License: MIT
License information: https://opensource.org/license/mit
Original upstream instructions; downloaded from Mega AI Hub.

## Upstream license notice

MIT License

Copyright (c) 2026 MoonPay, Inc.

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.



# Mega AI Hub resource metadata

Creator / publisher: jiayaoqijia
Original project: https://github.com/jiayaoqijia/cryptoskill/blob/bcc0d208deaa4f1f80aa0df7ca26c4bed6318918/skills/payments/moonpay-official-moonpay-price-alerts/SKILL.md
Attribution basis: Source repository record

Fields of work: Marketing
Roles: Growth Marketer, Marketing Analyst
Specialties: Specialty not specified
Tools: Jq, Mp
Country applicability: Country not specified
Classification basis: Source catalog labels
Instruction SHA-256: 81e027c19a2023d740f899949b0523345ab7c2d38e8fbc680a282d5fdcdae42f