Webhooks can be set up to receive notifications about changes to prompt templates. This functionality is particularly useful for storing prompts in cache, allowing for quicker retrieval without slowing down releases.

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Event Payload Format

When an event occurs, we send a POST request with a payload in this structure:

{
  "event_type": "string",
  "details": "object",
  "user_id": "number",
  "workspace_id": "number",
  "timestamp": "ISO 8601 format timestamp",
}

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Supported Event Types

We notify you for these events:

Event TypeDescriptionDetails
prompt_template_version_createdWhen a new version of a prompt template is created.
  • prompt_template_name (string)
  • prompt_template_version_number (number)
  • prompt_template_id (number)
prompt_template_name_changedWhen a prompt template’s name is changed.
  • prompt_template_id (number)
  • prompt_template_name (string)
  • old_prompt_template_name (string)
prompt_template_deletedWhen a prompt template is deleted.
  • prompt_template_id (number)
  • prompt_template_name (string)
prompt_template_label_createdWhen a new release label for a prompt template is created.
  • prompt_template_id (number)
  • prompt_template_name (string)
  • prompt_template_version_number (number)
  • prompt_template_label (string)
prompt_template_label_deletedWhen a release label for a prompt template is deleted.
  • prompt_template_id (number)
  • prompt_template_name (string)
  • prompt_template_version_number (number)
  • prompt_template_label (string)
prompt_template_label_movedWhen a release label is moved between prompt template versions.
  • prompt_template_id (number)
  • prompt_template_name (string)
  • prompt_template_version_number (number)
  • old_prompt_template_version_number (number)
  • prompt_template_label (string)
prompt_template_updatedWhen a snippet imported in a prompt template is updated.
  • prompt_template_id (number)
  • prompt_template_name (string)
  • prompt_template_version_number (number)
agent_run_finishedWhen an agent (workflow) run is completed.

Note: This event may fire multiple times for the same execution and is not triggered for runs from the dashboard, only when called via SDK or API.
  • agent_name (string)
  • agent_id (number)
  • agent_execution_id (number)

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Example Payload

{
  "event_type":"prompt_template_label_moved",
  "details":{
    "prompt_template_id":12,
    "prompt_template_name":"Hello",
    "prompt_template_version_number":9,
    "old_prompt_template_version_number":8,
    "prompt_template_label":"prod"
  },
  "user_id":1,
  "workspace_id":1,
  "timestamp":"2023-12-01T22:05:57.924833"
}

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Configuring a Webhook

To set up a webhook, go to the Webhook section in the Settings page. Enter the URL of the endpoint you want to send the webhook to and click Submit.

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Securing Your Webhook

When you create a webhook, you’ll receive a webhook secret signature that looks like this:

This secret is used to verify that incoming webhook requests are authentic and come from PromptLayer. The signature is included in the X-PromptLayer-Signature header of each webhook request.

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Verifying Webhook Signatures

Here are code examples showing how to verify the signatures:


import hmac
import hashlib
import json

signature = "HEADER FROM X-PromptLayer-Signature" # Replace with actual header value
secret_key = "SECRET KEY FROM PROMPTLAYER DASHBOARD" # Replace with actual secret key
payload = {} # Replace with actual payload
payload = json.dumps(payload, sort_keys=True).encode('utf-8')
payload_str = json.dumps(payload, sort_keys=True)
expected_signature = hmac.new(
    key=secret_key.encode(),
    msg=payload_str.encode('utf-8'),
    digestmod=hashlib.sha256
).hexdigest()

if hmac.compare_digest(expected_signature, signature):
    print("Signature is valid")
else:
    print("Signature is invalid")

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