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# particle webhooks
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You should configure your Rollbar's Webhooks to point at the `webhooks` service. To do this go to `particle.com/` and click `Settings > Notifications > Webhook` . In the resulting page set `URL` to `http://<my_ip>:1619/particle` , and click on `Enable Webhook Integration` .
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## Events
Your Particle device should publish an event that contains a JSON in the form of:
```
String data = String::format("{ \"tags\" : {
\"tag_name\": \"tag_value\",
\"other_tag\": \"other_value\"
},
\"values\": {
\"value_name\": %f,
\"other_value\": %f,
}
}", value_value, other_value
);
Particle.publish("event_name", data, PRIVATE);
```
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Escaping the "" is required in the source file.
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The number of tag values and field values is not restrictied so you can send as many values per webhook call as you'd like.
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You will need to enable JSON messages in the Webhooks setup of Particle.io
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See [webhook doc ](https://docs.particle.io/reference/webhooks/ )