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Beta Access RequiredPrice Change Events are currently in beta. To request early access, please contact our team by filling out our onboarding form.

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Overview

Dialect offers two types of price change detection:
  1. Market-Based Price Changes: Track price movements over sliding time windows (e.g., “SOL is up 10% in 24h”)
  2. Trade-Based Price Changes: Personalized alerts relative to users’ actual trade prices (e.g., “SOL is up 50% since you bought”)
Both systems use complex threshold detection and advanced filtering to deliver only the most relevant alerts.

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Market-Based Price Changes

Market-Based Price Changes are triggered by significant price movements of a token over sliding time windows using percentage change thresholds.

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How It Works

Dialect continuously monitors token prices and analyzes percentage changes over sliding time windows. When a token’s price change exceeds the configured threshold within a time window, a webhook is triggered with detailed information about the price movement.

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Sliding Window Analysis

Price changes are calculated using a sliding window approach:
  • Window Duration: Configurable time periods (1h, 3h, 6h, 12h, 24h, 7d)
  • Threshold: Percentage change required to trigger an event
  • Direction: Both upward and downward movements are detected

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Supported Time Windows

WindowBeta StatusUse Case
1hFutureMomentum detection, immediate market shifts
3hAvailableShort-term trend confirmation
6hAvailableIntraday trend identification
12hAvailableHalf-day trend analysis
24hAvailableDaily price movement tracking
7dPlannedWeekly trend detection

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Market-Based Webhook Payload

{
  "events": [
    {
      "event": "token_price_change",
      "timestamp": "2025-07-04T14:30:00Z",
      "token": {
        "symbol": "SOL",
        "address": "So11111111111111111111111111111111111111112"
      },
      "trigger": {
        "type": "sliding_window_percentage_change",
        "window": {
          "duration": "24h"
        },
        "threshold": 10.0
      },
      "change": {
        "direction": "up",
        "from": {
          "timestamp": "2025-07-03T14:30:00Z",
          "value": 154.25
        },
        "to": {
          "timestamp": "2025-07-04T14:30:00Z",
          "value": 171.85
        },
        "absolute": 17.6,
        "percentage": 11.42
      }
    }
  ]
}

​
Market-Based Field Details

Event Metadata
  • event: token_price_change
  • timestamp: ISO 8601 UTC timestamp when event was generated
Token Information
  • symbol: Token ticker symbol
  • address: Token mint address on Solana
Trigger Details
  • type: sliding_window_percentage_change
  • window: Sliding window configuration
    • duration: Time window used for the calculation (e.g., 1h, 3h, 6h, 12h, 24h, 7d)
  • threshold: The percentage change that must be crossed within the window to trigger the event
Change Information
  • direction: up for price increases, down for decreases
  • from: Price and timestamp at the start of the window
  • to: Price and timestamp at the end of the window
  • absolute: Raw price difference (to.value - from.value)
  • percentage: Percentage change over the window ((to.value - from.value) / from.value * 100)

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Trade-Based Price Changes (Last Trade)

Trade-Based Price Changes are triggered by significant price movements of a token relative to a user’s actual trading history. They offer a more personalized approach to price change alerts, providing alerts based on a user’s buy/sell behavior rather than market-wide price movements.

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How It Works

Please note that during the beta, we only support buy transactions that happened after the wallet was registered.
  1. Registration: Wallets must be explicitly registered to receive last trade events
  2. Trade Detection: System monitors all swap transactions for the wallet
  3. Anchor Points: Last buy price becomes the baseline for percentage calculations
  4. Threshold Monitoring: Price changes are evaluated against market cap-specific thresholds
  5. Event Triggering: Alerts fire when thresholds are crossed in either direction

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Registration Process

Wallets must be explicitly registered to receive last trade events. During beta:
  • Get in touch with us by using our contact form
  • Projects provide wallet lists to Dialect for monitoring
  • No backfill of historical trades (monitoring starts from registration)

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Trade-Based Threshold System

Thresholds are determined based on token market capitalization at the time of initial tracking:

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Standard Position Thresholds

Market Cap RangeUptrend TriggersDowntrend Triggers
Large Cap (>$1B)+5%, +10%, then every +10%-5%, -10%, then every -10%
Mid Cap (50M−50M-500M)+20%, +50%, then 2x, 3x, 4x…-20%, -30%, then every -10% until -90%
Small Cap (<$50M)+50%, then 2x, 3x, 4x…-20%, -30%, then every -10% until -90%
Micro Cap (<$1M)+50%, 2x, then every 1x-30%, -50%, -70%, -90%

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Post-Exit Thresholds

After a full sell (100% position exit), different thresholds apply:
Market Cap RangeUptrend TriggerDowntrend Trigger
Large Cap (>$1B)+30%-30%
Mid Cap (50M−50M-500M)2x-50%
Small Cap (<$50M)3x-50%
Micro Cap (<$1M)5x-70%

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Event Triggering Rules

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Threshold Crossing

  • Events trigger when price fully crosses a threshold
  • Same threshold cannot trigger twice consecutively
  • Price must cross another threshold before original can trigger again

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Round Trip Detection

  • System tracks when price returns to previous thresholds
  • Generates contextual alerts like “TOKEN back to +50% from 2x”
  • Helps users understand retracement patterns

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Multiple Threshold Handling

  • If multiple thresholds crossed in 5-minute window, only most significant triggers
  • Prioritizes largest movement (highest for uptrend, lowest for downtrend)

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Trade-Based Webhook Payload

{
  "events": [
    {
      "event": "token_last_trade_price_change",
      "timestamp": "2025-09-17T16:03:10.259Z",
      "token": {
        "symbol": "TOKEN",
        "address": "TokenMintAddress..."
      },
      "walletAddress": "UserWalletAddress...",
      "trigger": {
        "type": "trade_percentage_change",
        "trade": {
          "type": "buy",
          "timestamp": "2024-01-15T10:00:00.000Z",
          "transactionId": "TxSignature...",
          "balance": {
            "before": 0,
            "after": 1000,
            "change": 1000
          }
        },
        "threshold": 50
      },
      "changes": {
        "triggerTrade": {
          "type": "trade_change",
          "trade": {
            "type": "buy",
            "timestamp": "2024-01-15T10:00:00.000Z",
            "transactionId": "TxSignature...",
            "balance": {
              "before": 0,
              "after": 1000,
              "change": 1000
            }
          },
          "change": {
            "direction": "up",
            "from": {
              "timestamp": "2024-01-15T10:00:00.000Z",
              "value": 1.00
            },
            "to": {
              "timestamp": "2025-09-17T16:03:10.259Z",
              "value": 1.50
            },
            "absolute": 0.50,
            "percentage": 50.0
          }
        },
        "lastTrade": {
          "type": "trade_change",
          "trade": {
            "type": "buy",
            "timestamp": "2024-01-15T10:00:00.000Z",
            "transactionId": "TxSignature...",
            "balance": {
              "before": 0,
              "after": 1000,
              "change": 1000
            }
          },
          "change": {
            "direction": "up",
            "from": {
              "timestamp": "2024-01-15T10:00:00.000Z",
              "value": 1.00
            },
            "to": {
              "timestamp": "2025-09-17T16:03:10.259Z",
              "value": 1.50
            },
            "absolute": 0.50,
            "percentage": 50.0
          }
        },
        "lastPeak": {
          "type": "peak_change",
          "change": {
            "direction": "down",
            "from": {
              "timestamp": "2025-09-17T12:00:00.000Z",
              "value": 2.00
            },
            "to": {
              "timestamp": "2025-09-17T16:03:10.259Z",
              "value": 1.50
            },
            "absolute": -0.50,
            "percentage": -25.0
          }
        }
      }
    }
  ]
}

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Trade-Based Field Descriptions

Event Metadata
  • event: token_last_trade_price_change
  • timestamp: ISO 8601 UTC timestamp when event was generated
  • walletAddress: The wallet being monitored for this event
Token Information
  • symbol: Token ticker symbol
  • address: Token mint address on Solana
Trigger Details
  • type: trade_percentage_change
  • trade: The anchor trade (last buy or sell) used for calculations
    • type: buy or sell
    • timestamp: When the trade occurred
    • transactionId: Blockchain transaction signature
    • balance: Token balance changes
      • before: Balance before trade
      • after: Balance after trade
      • change: Net change (positive for buys, negative for sells)
  • threshold: The percentage threshold that was crossed
Change Information
  • triggerTrade: Price change from the anchor trade
  • lastTrade: Price change from most recent trade
  • lastPeak: Price change from previous alert threshold (optional)
    • Each contains:
      • direction: up or down
      • from/to: Start and end prices with timestamps
      • absolute: USD price difference
      • percentage: Percentage change

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Edge Cases

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Partial Sells

  • Last buy price remains the anchor
  • Partial sells don’t reset calculation baseline
  • Allows tracking performance of remaining position
  • If a subsequent buy occurs after a partial sell, that new buy immediately replaces the anchor; thresholds reset from the new buy price
  • When multiple trades happen within the same 5‑minute time window, lastTrade always refers to the chronologically latest trade

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SOL Handling

  • Trade‑based SOL price changes are muted in MVP
  • SOL is treated as an investment vehicle rather than a tracked asset for trade‑based alerts
  • Market‑based SOL price change alerts remain available and are unaffected

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Multiple Buys (DCA)

  • Only most recent buy price is used as anchor
  • No averaging across multiple purchases
  • We do not average across buys. Any new buy supersedes the prior anchor and restarts threshold tracking

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Implementation Examples

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Market-Based Price Change Handler

app.post('/webhook/price-events', (req, res) => {
  const event = req.body;

  // Send push notification to users holding this token
  sendPushNotification({
    title: `${event.token.symbol} ${event.change.direction === 'up' ? '📈' : '📉'} ${event.change.percentage.toFixed(1)}%`,
    body: `${event.token.symbol} moved ${event.change.percentage.toFixed(1)}% in the last ${event.trigger.window.duration}`,
    data: {
      tokenAddress: event.token.address,
      priceChange: event.change.percentage
    }
  });

  res.status(200).send('OK');
});

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Trade-Based Price Change Handler

app.post('/webhook/last-trade-events', async (req, res) => {
  const { events } = req.body;

  for (const event of events) {
    const { walletAddress, token, trigger, changes } = event;

    // Determine alert message based on context
    let message;
    if (trigger.trade.type === 'buy' && !changes.lastPeak) {
      // Simple price change from buy
      message = `${token.symbol} is ${changes.triggerTrade.change.direction} ` +
        `${Math.abs(changes.triggerTrade.change.percentage).toFixed(1)}% ` +
        `since you bought`;
    } else if (changes.lastPeak) {
      // Round trip from previous threshold
      message = `${token.symbol} is back to ` +
        `${changes.triggerTrade.change.percentage > 0 ? '+' : ''}` +
        `${Math.abs(changes.triggerTrade.change.percentage).toFixed(1)}% ` +
        `from ${changes.lastPeak.change.percentage > 0 ? '+' : ''}` +
        `${Math.abs(changes.lastPeak.change.percentage).toFixed(1)}%`;
    }

    // Send personalized notification
    await sendUserNotification(walletAddress, {
      title: `${token.symbol} Price Alert`,
      body: message,
      data: {
        tokenAddress: token.address,
        currentPrice: changes.triggerTrade.change.to.value
      }
    });
  }

  res.status(200).send('OK');
});
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