diff --git a/es/contract/aci/helpers.js b/es/contract/aci/helpers.js
index 794b2b63c1..3a37b6a107 100644
--- a/es/contract/aci/helpers.js
+++ b/es/contract/aci/helpers.js
@@ -1,4 +1,5 @@
 import * as R from 'ramda'
+import { unpackTx } from '../../tx/builder'
 
 /**
  * Get function schema from contract ACI object
@@ -81,3 +82,5 @@ const parseArguments = (aciArgs = []) => (args) => ({
   opt: args.length > aciArgs.length ? R.last(args) : {},
   args: Object.values(args).slice(0, aciArgs.length)
 })
+
+export const unpackByteCode = (bytecode) => unpackTx(bytecode, false, 'cb').tx
diff --git a/es/contract/aci/index.js b/es/contract/aci/index.js
index 8c48537e97..74ec4a9b67 100644
--- a/es/contract/aci/index.js
+++ b/es/contract/aci/index.js
@@ -76,7 +76,7 @@ async function prepareArgsForEncode (aci, params) {
  * Also you can call contract like: await contractIns.methods.setState(123, options)
  * Then sdk decide to make on-chain or static call(dry-run API) transaction based on function is stateful or not
  */
-async function getContractInstance (source, { aci, contractAddress, filesystem = {}, forceCodeCheck = false, opt } = {}) {
+async function getContractInstance (source, { aci, contractAddress, filesystem = {}, forceCodeCheck = true, opt } = {}) {
   aci = aci || await this.contractGetACI(source, { filesystem })
   const defaultOptions = {
     skipArgsConvert: false,
diff --git a/es/contract/compiler.js b/es/contract/compiler.js
index 137cd8b0e0..df0d5bd99e 100644
--- a/es/contract/compiler.js
+++ b/es/contract/compiler.js
@@ -86,6 +86,16 @@ async function contractGetACI (code, options = {}) {
   return this.http.post('/aci', { code, options: this.prepareCompilerOption(options) }, options)
 }
 
+async function getFateAssembler (bytecode, options = {}) {
+  this.isInit()
+  return this.http.post('/fate-assembler', { bytecode, options: this.prepareCompilerOption(options) }, options)
+}
+
+async function getBytecodeCompilerVersion (bytecode, options = {}) {
+  this.isInit()
+  return this.http.post('/compiler-version', { bytecode, options: this.prepareCompilerOption(options) }, options)
+}
+
 async function setCompilerUrl (url, { forceCompatibility = false } = {}) {
   this.http.changeBaseUrl(url)
   this.compilerVersion = await this.getCompilerVersion().catch(e => null)
@@ -142,7 +152,9 @@ const ContractCompilerAPI = AsyncInit.compose(ContractBase, {
     validateByteCodeAPI,
     isInit,
     checkCompatibility,
-    prepareCompilerOption
+    prepareCompilerOption,
+    getFateAssembler,
+    getBytecodeCompilerVersion
   },
   props: {
     compilerVersion: null,
diff --git a/es/contract/index.js b/es/contract/index.js
index aed23668f1..71c296deea 100644
--- a/es/contract/index.js
+++ b/es/contract/index.js
@@ -50,7 +50,9 @@ const ContractBase = stampit({
         'setCompilerUrl',
         'getCompilerVersion',
         'contractDecodeCallResultAPI',
-        'validateByteCodeAPI'
+        'validateByteCodeAPI',
+        'getFateAssembler',
+        'getBytecodeCompilerVersion'
       ]
     }
   }
@@ -63,7 +65,9 @@ const ContractBase = stampit({
     setCompilerUrl: required,
     getCompilerVersion: required,
     contractDecodeCallResultAPI: required,
-    validateByteCodeAPI: required
+    validateByteCodeAPI: required,
+    getFateAssembler: required,
+    getBytecodeCompilerVersion: required
   }
 }))
 
diff --git a/test/integration/contract.js b/test/integration/contract.js
index 4ad76c4930..7ee9190024 100644
--- a/test/integration/contract.js
+++ b/test/integration/contract.js
@@ -317,6 +317,16 @@ describe('Contract', function () {
       prefix.should.be.equal('cb')
       isString.should.be.equal(true)
     })
+    it('Get FATE assembler', async () => {
+      const result = await contract.getFateAssembler(bytecode)
+      result.should.be.a('object')
+      const assembler = result['fate-assembler']
+      assembler.should.be.a('string')
+    })
+    it('Get compiler version from bytecode', async () => {
+      const version = await contract.getBytecodeCompilerVersion(bytecode)
+      console.log(version)
+    })
     it('get contract ACI', async () => {
       const aci = await contract.contractGetACI(identityContract)
       aci.should.have.property('interface')