The Synapse Protocol: How to Connect Pine Script to 3Commas via Webhooks

2025-12-22

You have coded the Squeeze Hunter. You have secured capital from Elite Trader Funding. But right now, your strategy is just a drawing on a chart. It cannot place orders.

To breathe life into your system, you need to build a "Digital Nervous System." In technical terms, this is called a Webhook.

A Webhook is simply a digital handshake. It allows TradingView to shout "BUY NOW!" and 3Commas to hear it and execute instantly. Most traders mess this up. They copy-paste static text into alert boxes. An Architect hard-codes the logic directly into the script.

Here is how to build the bridge.

Phase 1: The Receiver (3Commas)

First, we need to tell 3Commas to listen for a signal.

1. Log in to 3Commas and go to DCA Bot.
2. Create a new bot (Long or Short).
3. In the "Deal Start Condition" section, select "Webhook / Signal Bot".
4. Once created, scroll down to the "Messages for Deal Start" section.
5. You will see two critical pieces of data:
   • Webhook URL: (e.g., https://3commas.io/trade_signal/trading_view_custom/...)
   • Message for Deal Start: A JSON string (e.g., {"message_type": "bot_deal_start_signal", ...})

Copy these. Keep them safe. This is your bot's private address.

Phase 2: The Transmitter (Pine Script)

This is where the magic happens. Instead of pasting the JSON into the TradingView alert box (which is prone to human error), we embed it directly into our Pine Script strategy.

This allows us to dynamically change the message based on market conditions.

Here is the code structure:

//@version=6
strategy("Codon: Webhook Transmitter", overlay=true)

// --- Inputs ---
// Paste your 3Commas JSON here
string startLongJSON = '{"message_type": "bot_deal_start_signal", "pair": "USDT_BTC", "bot_id": 12345}'
string closeLongJSON = '{"message_type": "bot_deal_close_signal", "pair": "USDT_BTC", "bot_id": 12345}'

// --- Logic (Example) ---
bool longCondition = ta.crossover(ta.rsi(close, 14), 30)
bool exitCondition = ta.crossunder(ta.rsi(close, 14), 70)

// --- Execution with Webhooks ---
// We use the 'alert_message' parameter to send the specific JSON
if (longCondition)
    strategy.entry("Long", strategy.long, alert_message = startLongJSON)

if (exitCondition)
    strategy.close("Long", alert_message = closeLongJSON)

Why do we do this? By using the alert_message parameter, we ensure that the exact command is tied to the exact moment the logic fires. No mismatches.

Phase 3: The Handshake (TradingView Alert)

Now, we connect the two.

1. Go to your TradingView chart with the strategy loaded.
2. Click the "Alert" (Alarm Clock) icon.
3. Condition: Select your strategy (e.g., "Codon: Webhook Transmitter").
4. Action: specific logic MUST be "Order Fills Only".
5. Webhook URL: Paste the 3Commas URL you copied in Phase 1.
6. Message: This is the most important part. Delete everything in the box and type exactly: {{strategy.order.alert_message}}

What just happened? You told TradingView: "When an order fills, look inside my Pine Script code, find the alert_message I defined in Phase 2, and send THAT specific JSON to 3Commas."

Troubleshooting The Link

If your bot isn't firing, check these common failures:

1. The "Repaint" Trap: Did you use calc_on_every_tick=true? Turn it off. We only want signals on bar close to ensure the data is permanent.
2. The JSON Error: JSON is strict. One missing quote (") breaks everything. Use a JSON validator online to check your string.
3. The Delay: Webhooks are fast (milliseconds), but not instant. Do not try to scalp 1-second charts. This setup is optimized for H1 or H4 swing trading.

Conclusion

You have now successfully automated your financial existence. The market moves. Pine Script thinks. The Webhook transmits. 3Commas executes.

You are no longer a trader. You are a server admin monitoring a money-printing process.

(Ready to expand? Learn how to protect this system with a Kill-Switch.)