Is there a GitHub hook to listen when a PR description changes?

Question

Is there any event or way to get a notification pushed (webhook) when the description or title of a Pull Request changes?

I currently listed to pull_requestevent but it only fires when a PR is “opened”, “closed”, “synchronize”, or “reopened”.

I'm tracking some links/tags/word from the description of a PR and during the review of the PR, the author may change the description but I cant find a way to receive a notification when this is happening.

One way could be to be checking with the api for changes (polling) but I need some better way to receive get this (push).

Answer 1

GitHub Pull Request Hook

Updated: the 26th of August 2021 26th of 2021

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Previously there was no such hook that could satisfy this answer, however 7 years have passed, and things have changed. The contemporary GitHub platform does offer a hook for listening to whether or not a Pull Request has been altered (aka "Edited").

A very thorough, and well developed, Pull Request Hook, or (PR Hook), now exists. As with all of the associated "GitHub WebHooks" , the PR-Hook uses a Webhook payload object that is unique from all other GitHub WebHooks. The PR-Hook has special actions that can trigger code in response to a wide variety of events, however; for specifically to the altercation of a Pull Request's description, the edited action is what you will likely want to use.

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GitHub Official Documentation for Pull Request Hooks

Answer 2

This is now possible, since there is an action edited.

Docs: https://docs.github.com/en/developers/webhooks-and-events/webhooks/webhook-events-and-payloads#pull_request