diff --git a/integrations/zoom.js b/integrations/zoom.js
index cf262af..3603cab 100644
--- a/integrations/zoom.js
+++ b/integrations/zoom.js
@@ -1,47 +1,85 @@
 const fetch = require('node-fetch');
 
 module.exports = async function(robot, kredits) {
+  const Contributor = kredits.Contributor;
+  const Contribution = kredits.Contribution;
 
-  function createContributionFor (participant, meeting) {
-    // TODO
+  const kreditsContributionAmount = 500;
+  const kreditsContributionKind = 'community';
+
+  const zoomAccessToken = process.env.KREDITS_ZOOM_JWT;
+
+  const walletTransactionCount = await kredits.provider.getTransactionCount(kredits.signer.address);
+  let nonce = walletTransactionCount;
+
+  function createContributionFor(participant, meeting) {
+    const displayName = participant.name;
+
+    return getContributorByZoomDisplayName(displayName)
+      .then(contributor => {
+        let contribution = {
+          contributorId: contributor.id,
+          contributorIpfsHash: contributor.ipfsHash,
+          amount: kreditsContributionAmount,
+          kind: kreditsContributionKind,
+          description: `Team meeting: ${meeting.topic}`,
+          date: meeting.end_time.split('T')[0],
+          time: meeting.end_time.split('T')[1]
+        }
+
+        return Contribution.addContribution(contribution, { nonce: nonce++ })
+          .catch(error => {
+            robot.logger.error(`[hubot-kredits] Adding contribution failed:`, error);
+          });
+      })
   }
 
-  function getContributorByZoomUserId(userId) {
-    return Contributor.findByAccount({ zoomId: userId });
+  function getContributorByZoomDisplayName(displayName) {
+    return Contributor.findByAccount({ site: 'zoom.us', username: displayName });
+  }
+
+  function request(path) {
+    return fetch(
+      `https://api.zoom.us/v2${path}`,
+      {headers: {authorization: `Bearer ${zoomAccessToken}`}}
+    );
   }
 
   function getMeetingParticipants(meetingUUID) {
-    fetch(`https://api.zoom.us/v2/past_meetings/${meetingUUID}/participants`)
+    return request(`/past_meetings/${meetingUUID}/participants`)
       .then(response => response.json())
       .then(json => json.participants)
   }
 
-  function handleZoomMeetingEnded(data) {
-    const meetingUUID = data.uuid;
-    const topic = data.topic;
-    const duration = data.duration;
+  function getMeetingDetails(meetingUUID) {
+    return request(`/past_meetings/${meetingUUID}`)
+      .then(r => r.json());
+  }
 
-    const meeting = {
-      // TODO
-    }
+  async function handleZoomMeetingEnded(data) {
+    const meetingDetails = await getMeetingDetails(data.uuid);
+    const participants = await getMeetingParticipants(data.uuid);
 
-    if (duration < 15) {
-      robot.logger.info('[hubot-kredits] ignoring short calls');
+    if (meetingDetails.duration < 15 || meetingDetails.participants_count < 3) {
+      robot.logger.info(`[hubot-kredits] ignoring meeting: uuid:${data.uuid} duration:${meetingDetails.duration} participants_count:${meetingDetails.participants_count}`);
       return;
     }
-    const participants = await getMeetingParticipants(meetingUUID);
     participants.forEach(p => {
-      createContributionFor(p, meeting);
+      createContributionFor(p, meetingDetails)
+        .then(tx => {
+          robot.logger.info(`[hubot-kredits] contribution created: ${tx.hash}`);
+        })
     });
   }
 
-  robot.router.post('/incoming/kredits/zoom'+process.env.KREDITS_WEBHOOK_TOKEN), (req, res) => {
+  robot.router.post('/incoming/kredits/zoom'+process.env.KREDITS_WEBHOOK_TOKEN, (req, res) => {
     let data = req.body;
     const eventName = data.event;
     const payload = data.payload;
+    const object = payload.object;
 
     if (eventName === 'meeting.ended') {
-      handleZoomMeetingEnded(payload);
+      handleZoomMeetingEnded(object);
     }
 
     res.sendStatus(200);