# Slack webhook not working **URL:** \ **Category:** Prismic for Content Creators\ **Created:** [October 1, 2020, 8:33pm UTC](https://community.prismic.io/t/slack-webhook-not-working/2114 "2020-10-01T20:33:49Z")\ **Posts on this page:** 1\ **Showing post:** 6
**Author:** ![Phil](https://dub1.discourse-cdn.com/flex013/user_avatar/community.prismic.io/phil/32/14_2.png) [@Phil](https://community.prismic.io/u/Phil)\ **Post date:** [October 2, 2020, 3:30pm UTC](https://community.prismic.io/t/slack-webhook-not-working/2114/6 "2020-10-02T15:30:09Z")
What information are you trying to send to your Slack integration about activity on Prismic? Because our webhooks only say that something HAS changed at the moment, they don't say WHAT changed. This might be what is causing your issue. We are working on improving this at the moment though: > [@Determining which documents have changed with webhooks](https://community.prismic.io/t/determining-which-documents-have-changed-with-webhooks/89/2): > > I think I figured it out. The Webhooks do not specify what has changed, just that something has changed. After you receive a webhook you can [query your documents by publication date](https://prismic.io/docs/rest-api/query-the-api/query-by-date#7_0-query-by-publication-dates) (first\_publication\_date and last\_publication\_date ) and use the [date.after predicate](https://prismic.io/docs/rest-api/query-the-api/date-based-predicate-reference#2_1-after) to get documents that have been published or changed since the previous time you received a webhook. With [GraphQL](https://prismic.io/docs/graphql/query-the-api/query-by-date#10_0-query-by-a-publication-date) you can use firstPublicationDate\_after and lastPublicationDate\_after arguments to query after a given date and time. --- _[View the full topic](https://community.prismic.io/t/slack-webhook-not-working/2114)._