diff --git a/modules/otmBidAdapter.js b/modules/otmBidAdapter.js
new file mode 100644
index 00000000000..a0e91a480a2
--- /dev/null
+++ b/modules/otmBidAdapter.js
@@ -0,0 +1,146 @@
+import { registerBidder } from '../src/adapters/bidderFactory.js';
+import {logInfo, logError, getBidIdParameter, _each, getValue, isFn, isPlainObject} from '../src/utils.js';
+import { BANNER } from '../src/mediaTypes.js';
+
+const BIDDER_CODE = 'otm';
+const OTM_BID_URL = 'https://ssp.otm-r.com/adjson';
+const DEF_CUR = 'RUB'
+
+export const spec = {
+
+  code: BIDDER_CODE,
+  url: OTM_BID_URL,
+  supportedMediaTypes: [ BANNER ],
+
+  /**
+   * Determines whether or not the given bid request is valid.
+   *
+   * @param {object} bid The bid to validate.
+   * @return boolean True if this is a valid bid, and false otherwise.
+   */
+  isBidRequestValid: function (bid) {
+    return !!bid.params.tid;
+  },
+
+  /**
+   * Build bidder requests.
+   *
+   * @param validBidRequests
+   * @param bidderRequest
+   * @returns {[]}
+   */
+  buildRequests: function (validBidRequests, bidderRequest) {
+    logInfo('validBidRequests', validBidRequests);
+
+    const bidRequests = [];
+    let tz = new Date().getTimezoneOffset()
+    let referrer = '';
+    if (bidderRequest && bidderRequest.refererInfo) {
+      referrer = bidderRequest.refererInfo.referer;
+    }
+
+    _each(validBidRequests, (bid) => {
+      let domain = getValue(bid.params, 'domain') || ''
+      let tid = getValue(bid.params, 'tid')
+      let cur = getValue(bid.params, 'currency') || DEF_CUR
+      let bidid = getBidIdParameter('bidId', bid)
+      let transactionid = getBidIdParameter('transactionId', bid)
+      let auctionid = getBidIdParameter('auctionId', bid)
+      let bidfloor = _getBidFloor(bid)
+
+      _each(bid.sizes, size => {
+        let width = 0;
+        let height = 0;
+        if (size.length && typeof size[0] === 'number' && typeof size[1] === 'number') {
+          width = size[0];
+          height = size[1];
+        }
+        bidRequests.push({
+          method: 'GET',
+          url: OTM_BID_URL,
+          data: {
+            tz: tz,
+            w: width,
+            h: height,
+            domain: domain,
+            l: referrer,
+            s: tid,
+            cur: cur,
+            bidid: bidid,
+            transactionid: transactionid,
+            auctionid: auctionid,
+            bidfloor: bidfloor,
+          },
+        })
+      })
+    })
+    return bidRequests;
+  },
+
+  /**
+   * Generate response.
+   *
+   * @param serverResponse
+   * @param request
+   * @returns {[]|*[]}
+   */
+  interpretResponse: function (serverResponse, request) {
+    logInfo('serverResponse', serverResponse.body);
+
+    const responsesBody = serverResponse ? serverResponse.body : {};
+    const bidResponses = [];
+    try {
+      if (responsesBody.length === 0) {
+        return [];
+      }
+
+      _each(responsesBody, (bid) => {
+        if (bid.ad) {
+          bidResponses.push({
+            requestId: bid.bidid,
+            cpm: bid.cpm,
+            width: bid.w,
+            height: bid.h,
+            creativeId: bid.creativeid,
+            currency: bid.currency || 'RUB',
+            netRevenue: true,
+            ad: bid.ad,
+            ttl: bid.ttl,
+            transactionId: bid.transactionid,
+            meta: {
+              advertiserDomains: bid.adDomain ? [bid.adDomain] : []
+            }
+          });
+        }
+      });
+    } catch (error) {
+      logError(error);
+    }
+
+    return bidResponses;
+  }
+};
+
+/**
+ * Get floor value
+ * @param bid
+ * @returns {null|*}
+ * @private
+ */
+function _getBidFloor(bid) {
+  if (!isFn(bid.getFloor)) {
+    return bid.params.bidfloor ? bid.params.bidfloor : 0;
+  }
+
+  let floor = bid.getFloor({
+    currency: DEF_CUR,
+    mediaType: '*',
+    size: '*'
+  });
+  if (isPlainObject(floor) && !isNaN(floor.floor) && floor.currency === DEF_CUR) {
+    return floor.floor;
+  }
+  return 0;
+}
+
+registerBidder(spec);
diff --git a/modules/otmBidAdapter.md b/modules/otmBidAdapter.md
index 4962d3a8052..e5834da5729 100644
--- a/modules/otmBidAdapter.md
+++ b/modules/otmBidAdapter.md
@@ -1,36 +1,37 @@
 # Overview
 
-Module Name: OTM Bidder Adapter
-Module Type: Bidder Adapter
-Maintainer: ?
+**Module Name**: OTM Bidder Adapter
+**Module Type**: Bidder Adapter  
+**Maintainer**: e.kretsu@otm-r.com
 
 # Description
 
-You can use this adapter to get a bid from otm-r.com.
+OTM Bidder Adapter for Prebid.js. About: https://otm-r.com
 
-About us : http://otm-r.com
+Use `otm` as bidder:
 
+# Params
+- `tid` required, specific id AdUnit slot.
+- `domain` optional, specific custom domain.
+- `bidfloor` optional.
 
-# Test Parameters
-```javascript
-    var adUnits = [
-        {
-            code: 'div-otm-example',
-            sizes: [[320, 480]],
-            bids: [
-                {
-                    bidder: "otm",
-                    params: {
-                        tid: "99",
-                        bidfloor: 20
-                    }
-                }
-            ]
-        }
-    ];
+## AdUnits configuration example
 ```
+    var adUnits = [{
+      code: 'your-slot', //use exactly the same code as your slot div id.
+      mediaTypes: {
+          banner: {
+              sizes: [[320, 480]]
+          }
+      },
+      bids: [{
+        bidder: 'otm',
+        params: { 
+            tid: 'XXXXX',
+            domain: 'specific custom domain, if needed',
+            bidfloor: 20
+        }
+      }]
+    }];
 
-Where:
-
-* tid - A tag id (should have low cardinality)
-* bidfloor - Floor price
+```
diff --git a/test/spec/modules/otmBidAdapter_spec.js b/test/spec/modules/otmBidAdapter_spec.js
new file mode 100644
index 00000000000..6eb5768c3af
--- /dev/null
+++ b/test/spec/modules/otmBidAdapter_spec.js
@@ -0,0 +1,67 @@
+import {expect} from 'chai';
+import {spec} from 'modules/otmBidAdapter';
+
+describe('otmBidAdapter', function () {
+  it('validate_pub_params', function () {
+    expect(spec.isBidRequestValid({
+      bidder: 'otm',
+      params: {
+        tid: '123',
+        bidfloor: 20
+      }
+    })).to.equal(true);
+  });
+
+  it('validate_generated_params', function () {
+    let bidRequestData = [{
+      bidId: 'bid1234',
+      bidder: 'otm',
+      params: {
+        tid: '123',
+        bidfloor: 20
+      },
+      sizes: [[240, 400]]
+    }];
+
+    let request = spec.buildRequests(bidRequestData);
+    let req_data = request[0].data;
+
+    expect(req_data.bidid).to.equal('bid1234');
+  });
+
+  it('validate_response_params', function () {
+    let bidRequestData = {
+      data: {
+        bidId: 'bid1234'
+      }
+    };
+
+    let serverResponse = {
+      body: [
+        {
+          'auctionid': '3c6f8e22-541b-485c-9214-e974d9fb1b6f',
+          'cpm': 847.097,
+          'ad': '<html><body>test html</body></html>',
+          'w': 240,
+          'h': 400,
+          'currency': 'RUB',
+          'ttl': 300,
+          'creativeid': '1_7869053',
+          'bidid': '101f211def7c99',
+          'transactionid': 'transaction_id_1'
+        }
+      ]
+    };
+
+    let bids = spec.interpretResponse(serverResponse, bidRequestData);
+    expect(bids).to.have.lengthOf(1);
+    let bid = bids[0];
+    expect(bid.cpm).to.equal(847.097);
+    expect(bid.currency).to.equal('RUB');
+    expect(bid.width).to.equal(240);
+    expect(bid.height).to.equal(400);
+    expect(bid.netRevenue).to.equal(true);
+    expect(bid.requestId).to.equal('101f211def7c99');
+    expect(bid.ad).to.equal('<html><body>test html</body></html>');
+  });
+});