End-to-end architecture
- Pine Script. Detects the strategy condition and creates an alert payload.
- TradingView webhook. Sends the payload to an HTTPS endpoint when the alert fires.
- Bridge API. Authenticates, validates and records the event before forwarding an instruction.
- MT5 receiver/EA. Pulls or receives approved instructions and submits the order using broker-safe rules.
- Status channel. Records broker ticket, fill status, errors and later modifications.
Use structured payloads
Avoid free-form alert sentences when the bridge can receive structured JSON. Typical fields are strategy ID, symbol, side, order type, entry, stop loss, take profit, risk or volume rule, event ID and timestamp. The bridge should reject fields it does not understand instead of silently guessing.
Prevent duplicate orders
Webhook delivery and network retries can create duplicate events. Generate a deterministic event identifier and make execution idempotent: if the same event has already produced an MT5 order, a retry should return the existing result instead of opening another position.
Security basics
- Use a secret or signed payload that is not embedded in public client-side code.
- Serve the webhook endpoint over HTTPS.
- Apply rate limits and reject malformed requests.
- Store only the credentials actually required and keep broker secrets out of TradingView alerts.
- Log authentication failures and execution errors.
Market timing and latency
A TradingView alert is not the same thing as a guaranteed broker fill at the chart price. By the time the webhook arrives and MT5 submits an order, the market may have moved. Strategies sensitive to milliseconds or very small price differences need realistic latency and slippage tests.
Trade management after entry
The bridge can support later events such as modify stop, move to break-even, partial close or full close. Each event should reference the original strategy position through a stable ID so the system does not modify unrelated manual trades.
Testing checklist
- Replay duplicate webhook payloads and verify only one order is created.
- Send malformed symbols, missing stops and invalid prices.
- Restart the bridge and MT5 terminal, then verify state reconciliation.
- Test market-closed and insufficient-margin responses.
- Test broker symbol suffixes and minimum stop-distance rules.
- Measure alert-to-order latency and log the actual fill price.