diff --git a/apps/remix-ide-e2e/src/tests/debugger.test.ts b/apps/remix-ide-e2e/src/tests/debugger.test.ts
index 7a8cf034a0f..2cdef15587a 100644
--- a/apps/remix-ide-e2e/src/tests/debugger.test.ts
+++ b/apps/remix-ide-e2e/src/tests/debugger.test.ts
@@ -178,6 +178,33 @@ module.exports = {
     .getEditorValue((content) => {
       browser.assert.ok(content.indexOf('if slt(sub(dataEnd, headStart), 32) { revert(0, 0) }') != -1, 'current displayed content is not a generated source')
     })
+    .click('*[data-id="debuggerTransactionStartButton"]')
+  },
+
+  'Should call the debugger api: getTrace': function (browser: NightwatchBrowser) {
+    browser
+    .addFile('test_jsGetTrace.js', { content: jsGetTrace })
+    .executeScript('remix.exeCurrent()')
+    .pause(3000)
+    .journalChildIncludes(`{ "gas": "0x2dc6c0", "return": "0x", "structLogs":`)    
+  },
+
+  'Should call the debugger api: debug': function (browser: NightwatchBrowser) {
+    browser
+    .addFile('test_jsDebug.js', { content: jsDebug })
+    .executeScript('remix.exeCurrent()')
+    .pause(3000)
+    .clickLaunchIcon('debugger')
+    .waitForElementVisible('*[data-id="slider"]')
+    .click('*[data-id="slider"]')
+    .setValue('*[data-id="slider"]', '5')
+    .pause(1000)
+    /*
+      setting the slider to 5 leads to "vm trace step: 91" for chrome and "vm trace step: 92" for firefox
+      => There is something going wrong with the nightwatch API here.
+      As we are only testing if debugger is active, this is ok to keep that for now.
+    */
+    .assert.containsText('*[data-id="stepdetail"]', 'vm trace step:\n9')
     .end()
   },
 
@@ -335,3 +362,21 @@ const localVariable_step717_ABIEncoder = {
       "type": "bytes"
   }
 }
+
+const jsGetTrace = `(async () => {    
+  try {
+      const result = await remix.call('debugger', 'getTrace', '0xb175c3c9a9cd6bee3b6cc8be3369a945ac9611516005f8cba27a43486ff2bc50')
+      console.log('result ', result)
+  } catch (e) {
+      console.log(e.message)
+  }
+})()`
+
+const jsDebug = `(async () => {    
+  try {
+      const result = await remix.call('debugger', 'debug', '0xb175c3c9a9cd6bee3b6cc8be3369a945ac9611516005f8cba27a43486ff2bc50')
+      console.log('result ', result)
+  } catch (e) {
+      console.log(e.message)
+  }
+})()`
diff --git a/apps/remix-ide/src/app.js b/apps/remix-ide/src/app.js
index b6e4ac88865..420b40f95df 100644
--- a/apps/remix-ide/src/app.js
+++ b/apps/remix-ide/src/app.js
@@ -370,7 +370,10 @@ Please make a backup of your contracts and start using http://remix.ethereum.org
     registry.get('fileproviders/browser').api,
   )
   const analysis = new AnalysisTab(registry)
-  const debug = new DebuggerTab(blockchain)
+  const debug = new DebuggerTab(
+    blockchain, 
+    registry.get('editor').api, 
+    registry.get('offsettolinecolumnconverter').api)
   const test = new TestTab(
     registry.get('filemanager').api,
     registry.get('offsettolinecolumnconverter').api,
diff --git a/apps/remix-ide/src/app/tabs/debugger-tab.js b/apps/remix-ide/src/app/tabs/debugger-tab.js
index 3ad33d5a171..7438ab8883f 100644
--- a/apps/remix-ide/src/app/tabs/debugger-tab.js
+++ b/apps/remix-ide/src/app/tabs/debugger-tab.js
@@ -3,6 +3,7 @@ const css = require('./styles/debugger-tab-styles')
 import toaster from '../ui/tooltip'
 import { DebuggerUI } from '@remix-ui/debugger-ui'
 import { ViewPlugin } from '@remixproject/engine'
+import remixDebug, { TransactionDebugger as Debugger } from '@remix-project/remix-debug'
 import * as packageJson from '../../../../../package.json'
 import React from 'react'
 import ReactDOM from 'react-dom'
@@ -22,13 +23,15 @@ const profile = {
 
 class DebuggerTab extends ViewPlugin {
 
-  constructor (blockchain) {
+  constructor (blockchain, editor, offsetToLineColumnConverter) {
     super(profile)
     this.el = null
+    this.editor = editor
+    this.offsetToLineColumnConverter = offsetToLineColumnConverter
     this.blockchain = blockchain
     this.debugHash = null
-    this.getTraceHash = null
     this.removeHighlights = false
+    this.debugHashRequest = 0
   }
 
   render () {
@@ -81,12 +84,55 @@ class DebuggerTab extends ViewPlugin {
 
   debug (hash) {
     this.debugHash = hash
+    this.debugHashRequest++ // so we can trigger a debug using the same hash 2 times in a row. that's needs to be improved
     this.renderComponent()
   }
 
-  getTrace (hash) {
-    this.getTraceHash = hash
-    this.renderComponent()
+  getDebugWeb3 () {
+    return new Promise((resolve, reject) => {
+      this.blockchain.detectNetwork((error, network) => {
+        let web3
+        if (error || !network) {
+          web3 = remixDebug.init.web3DebugNode(this.blockchain.web3())
+        } else {
+          const webDebugNode = remixDebug.init.web3DebugNode(network.name)
+          web3 = !webDebugNode ? this.blockchain.web3() : webDebugNode
+        }
+        remixDebug.init.extendWeb3(web3)
+        resolve(web3)
+      })
+    })
+  }
+
+  async getTrace (hash) {
+    if (!hash) return
+    try {
+      const web3 = await this.getDebugWeb3()
+      const currentReceipt = await web3.eth.getTransactionReceipt(hash)
+      const debug = new Debugger({
+        web3,
+        offsetToLineColumnConverter: this.offsetToLineColumnConverter,
+        compilationResult: async (address) => {
+          try {
+            return await this.fetchContractAndCompile(address, currentReceipt)
+          } catch (e) {
+            console.error(e)
+          }
+          return null
+        },
+        debugWithGeneratedSources: false
+      })
+    
+      return await debug.debugger.traceManager.getTrace(hash)
+    } catch (e) {
+      throw e
+    }
+  }
+
+  fetchContractAndCompile (address, receipt) {
+    const target = (address && remixDebug.traceHelper.isContractCreation(address)) ? receipt.contractAddress : address
+
+    return this.call('fetchAndCompile', 'resolve', target || receipt.contractAddress || receipt.to, '.debug', this.blockchain.web3())
   }
 
   // debugger () {
diff --git a/libs/remix-debug/src/code/codeManager.js b/libs/remix-debug/src/code/codeManager.js
index f997ce8ff73..56d9972bbf1 100644
--- a/libs/remix-debug/src/code/codeManager.js
+++ b/libs/remix-debug/src/code/codeManager.js
@@ -142,7 +142,11 @@ function retrieveIndexAndTrigger (codeMananger, address, step, code) {
   } catch (error) {
     return console.log(error)
   }
-  codeMananger.event.trigger('changed', [code, address, result])
+  try {
+    codeMananger.event.trigger('changed', [code, address, result])
+  } catch (e) {
+    console.log('dispatching event failed', e)
+  }  
 }
 
 module.exports = CodeManager
diff --git a/libs/remix-debug/src/solidity-decoder/internalCallTree.js b/libs/remix-debug/src/solidity-decoder/internalCallTree.js
index 9053caaf32a..4f58adbf5c1 100644
--- a/libs/remix-debug/src/solidity-decoder/internalCallTree.js
+++ b/libs/remix-debug/src/solidity-decoder/internalCallTree.js
@@ -292,7 +292,7 @@ async function includeVariableDeclaration (tree, step, sourceLocation, scopeId,
         //   }
         // }
         // input params
-        if (inputs) {
+        if (inputs && inputs.parameters) {
           functionDefinitionAndInputs.inputs = addParams(inputs, tree, scopeId, states, contractObj.name, previousSourceLocation, stack.length, inputs.parameters.length, -1)
         }
         // output params
diff --git a/libs/remix-debug/src/trace/traceRetriever.js b/libs/remix-debug/src/trace/traceRetriever.js
deleted file mode 100644
index 4d3b78a697d..00000000000
--- a/libs/remix-debug/src/trace/traceRetriever.js
+++ /dev/null
@@ -1,19 +0,0 @@
-'use strict'
-
-function TraceRetriever (options) {
-  this.web3 = options.web3
-}
-
-TraceRetriever.prototype.getTrace = function (txHash, callback) {
-  const options = {
-    disableStorage: true,
-    disableMemory: false,
-    disableStack: false,
-    fullStorage: false
-  }
-  this.web3.debug.traceTransaction(txHash, options, function (error, result) {
-    callback(error, result)
-  })
-}
-
-module.exports = TraceRetriever
diff --git a/libs/remix-ui/debugger-ui/src/lib/debugger-ui.tsx b/libs/remix-ui/debugger-ui/src/lib/debugger-ui.tsx
index c8799fa148a..f99bd89698f 100644
--- a/libs/remix-ui/debugger-ui/src/lib/debugger-ui.tsx
+++ b/libs/remix-ui/debugger-ui/src/lib/debugger-ui.tsx
@@ -5,11 +5,9 @@ import VmDebugger from './vm-debugger/vm-debugger'
 import VmDebuggerHead from './vm-debugger/vm-debugger-head'
 import remixDebug, { TransactionDebugger as Debugger } from '@remix-project/remix-debug'
 /* eslint-disable-next-line */
-import globalRegistry from '../../../../../apps/remix-ide/src/global/registry'
 import './debugger-ui.css'
 
 export const DebuggerUI = ({ debuggerModule }) => {
-  const init = remixDebug.init
   const [state, setState] = useState({
     isActive: false,
     statusMessage: '',
@@ -31,12 +29,10 @@ export const DebuggerUI = ({ debuggerModule }) => {
   }, [])
 
   useEffect(() => {
-    debug(debuggerModule.debugHash)
-  }, [debuggerModule.debugHash])
-
-  useEffect(() => {
-    getTrace(debuggerModule.getTraceHash)
-  }, [debuggerModule.getTraceHash])
+    if (debuggerModule.debugHash) {
+      debug(debuggerModule.debugHash)
+    }
+  }, [debuggerModule.debugHashRequest])
 
   useEffect(() => {
     if (debuggerModule.removeHighlights) deleteHighlights()
@@ -44,7 +40,7 @@ export const DebuggerUI = ({ debuggerModule }) => {
 
   useEffect(() => {
     const setEditor = () => {
-      const editor = globalRegistry.get('editor').api
+      const editor = debuggerModule.editor
 
       editor.event.register('breakpointCleared', (fileName, row) => {
         if (state.debugger) state.debugger.breakPointManager.remove({fileName: fileName, row: row})
@@ -64,12 +60,6 @@ export const DebuggerUI = ({ debuggerModule }) => {
     setEditor()
   }, [state.debugger])
 
-  const fetchContractAndCompile = (address, receipt) => {
-    const target = (address && remixDebug.traceHelper.isContractCreation(address)) ? receipt.contractAddress : address
-
-    return debuggerModule.call('fetchAndCompile', 'resolve', target || receipt.contractAddress || receipt.to, '.debug', debuggerModule.blockchain.web3())
-  }
-
   const listenToEvents = (debuggerInstance, currentReceipt) => {
     if (!debuggerInstance) return
 
@@ -82,7 +72,7 @@ export const DebuggerUI = ({ debuggerModule }) => {
 
     debuggerInstance.event.register('newSourceLocation', async (lineColumnPos, rawLocation, generatedSources) => {
       if (!lineColumnPos) return
-      const contracts = await fetchContractAndCompile(
+      const contracts = await debuggerModule.fetchContractAndCompile(
         currentReceipt.contractAddress || currentReceipt.to,
         currentReceipt)
 
@@ -128,22 +118,6 @@ export const DebuggerUI = ({ debuggerModule }) => {
     return state.isActive
   }
 
-  const getDebugWeb3 = (): Promise<any> => {
-    return new Promise((resolve, reject) => {
-      debuggerModule.blockchain.detectNetwork((error, network) => {
-        let web3
-        if (error || !network) {
-          web3 = init.web3DebugNode(debuggerModule.blockchain.web3())
-        } else {
-          const webDebugNode = init.web3DebugNode(network.name)
-          web3 = !webDebugNode ? debuggerModule.blockchain.web3() : webDebugNode
-        }
-        init.extendWeb3(web3)
-        resolve(web3)
-      })
-    })
-  }
-
   const unLoad = () => {
     if (state.debugger) state.debugger.unload()
     setState(prevState => {
@@ -169,14 +143,14 @@ export const DebuggerUI = ({ debuggerModule }) => {
   const startDebugging = async (blockNumber, txNumber, tx) => {
     if (state.debugger) unLoad()
     if (!txNumber) return
-    const web3 = await getDebugWeb3()
+    const web3 = await debuggerModule.getDebugWeb3()
     const currentReceipt = await web3.eth.getTransactionReceipt(txNumber)
     const debuggerInstance = new Debugger({
       web3,
-      offsetToLineColumnConverter: globalRegistry.get('offsettolinecolumnconverter').api,
+      offsetToLineColumnConverter: debuggerModule.offsetToLineColumnConverter,
       compilationResult: async (address) => {
         try {
-          return await fetchContractAndCompile(address, currentReceipt)
+          return await debuggerModule.fetchContractAndCompile(address, currentReceipt)
         } catch (e) {
           console.error(e)
         }
@@ -206,35 +180,7 @@ const debug = (txHash) => {
   startDebugging(null, txHash, null)
 }
 
-const getTrace = (hash) => {
-  if (!hash) return
-  return new Promise(async (resolve, reject) => { /* eslint-disable-line */
-    const web3 = await getDebugWeb3()
-    const currentReceipt = await web3.eth.getTransactionReceipt(hash)
-    const debug = new Debugger({
-      web3,
-      offsetToLineColumnConverter: globalRegistry.get('offsettolinecolumnconverter').api,
-      compilationResult: async (address) => {
-        try {
-          return await fetchContractAndCompile(address, currentReceipt)
-        } catch (e) {
-          console.error(e)
-        }
-        return null
-      },
-      debugWithGeneratedSources: false
-    })
 
-    setState(prevState => {
-      return { ...prevState, currentReceipt }
-    })
-
-    debug.debugger.traceManager.traceRetriever.getTrace(hash, (error, trace) => {
-      if (error) return reject(error)
-      resolve(trace)
-    })
-  })
-}
 
 const deleteHighlights = async () => {
   await debuggerModule.call('editor', 'discardHighlight')
diff --git a/package-lock.json b/package-lock.json
index 26d5b3827ff..ddfb52a0683 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -28127,6 +28127,7 @@
         },
         "dezalgo": {
           "version": "1.0.3",
+          "resolved": false,
           "integrity": "sha1-f3Qt4Gb8dIvI24IFad3c5Jvw1FY=",
           "requires": {
             "asap": "^2.0.0",
@@ -28755,6 +28756,7 @@
         },
         "normalize-git-url": {
           "version": "3.0.2",
+          "resolved": false,
           "integrity": "sha1-jl8Uvgva7bc+ByADEKpBbCc1D8Q="
         },
         "normalize-package-data": {
@@ -28792,6 +28794,7 @@
         },
         "npm-install-checks": {
           "version": "3.0.0",
+          "resolved": false,
           "integrity": "sha1-1K7N/VGlPjcjt7L5Oy7ijjB7wNc=",
           "requires": {
             "semver": "^2.3.0 || 3.x || 4 || 5"
@@ -29138,6 +29141,7 @@
         },
         "realize-package-specifier": {
           "version": "3.0.3",
+          "resolved": false,
           "integrity": "sha1-0N74gpUrjeP2frpekRmWYScfQfQ=",
           "requires": {
             "dezalgo": "^1.0.1",
@@ -29674,6 +29678,7 @@
           "dependencies": {
             "unique-slug": {
               "version": "2.0.0",
+              "resolved": false,
               "integrity": "sha1-22Z258fMBimHj/GWCXx4hVrp9Ks=",
               "requires": {
                 "imurmurhash": "^0.1.4"