diff --git a/src/aquarius/Aquarius.ts b/src/aquarius/Aquarius.ts
index e082394..151dc85 100644
--- a/src/aquarius/Aquarius.ts
+++ b/src/aquarius/Aquarius.ts
@@ -1,8 +1,10 @@
 import { URL } from 'whatwg-url'
 import { DDO } from '../ddo/DDO'
 import DID from '../ocean/DID'
+import { EditableMetaData } from '../ddo/MetaData'
 import { Logger } from '../utils'
 import { WebServiceConnector } from '../ocean/utils/WebServiceConnector'
+import { escrowAccessServiceAgreementTemplate } from '../keeper/contracts/templates/EscrowAccess.serviceAgreementTemplate'
 
 const apiPath = '/api/v1/aquarius/assets/ddo'
 
@@ -260,6 +262,95 @@ export class Aquarius {
         return result
     }
 
+
+    public async editMetadata(
+        did: DID | string,
+        newMetadata: EditableMetaData,
+        updated: string,
+        signature: string
+    ): Promise<string> {
+        did = did && DID.parse(did)
+        const fullUrl = `${this.url}${apiPath}/metadata/update/${did.getDid()}`
+        let data = Object()
+        if (newMetadata.description != null)
+            data.description = newMetadata.description
+        if (newMetadata.title != null)
+            data.title = newMetadata.title
+        if (newMetadata.servicePrices != null)
+            data.servicePrices = newMetadata.servicePrices
+        if (newMetadata.links != null) {
+            data.links = []
+            for (const [name, url] of Object.entries(newMetadata.links)) {
+                let asample = Object()
+                asample.name = name
+                asample.url = url
+                asample.type = 'sample'
+                data.links.push(asample)
+            }
+        }
+        data.updated = updated
+        data.signature = signature
+        const result = await this.fetch
+            .put(
+                fullUrl,
+                JSON.stringify(data)
+            )
+            .then((response: any) => {
+                if (response.ok) {
+                    return response.text
+                }
+                this.logger.log(
+                    'transferownership failed:',
+                    response.status,
+                    response.statusText
+                )
+                return null
+            })
+
+            .catch(error => {
+                this.logger.error('Error transfering ownership metadata: ', error)
+                return null
+            })
+
+        return result
+    }
+
+    public async retire(
+        did: DID | string,
+        updated: string,
+        signature: string
+    ): Promise<string> {
+        did = did && DID.parse(did)
+        const fullUrl = `${this.url}${apiPath}/${did.getDid()}`
+        const result = await this.fetch
+            .delete(
+                fullUrl,
+                JSON.stringify({
+                    signature: signature,
+                    updated: updated
+                })
+            )
+            .then((response: any) => {
+                if (response.ok) {
+                    return response.text
+                }
+                this.logger.log(
+                    'transferownership failed:',
+                    response.status,
+                    response.statusText
+                )
+                return null
+            })
+
+            .catch(error => {
+                this.logger.error('Error transfering ownership metadata: ', error)
+                return null
+            })
+
+        return result
+    }
+
+
     public getServiceEndpoint(did: DID) {
         return `${this.url}/api/v1/aquarius/assets/ddo/did:op:${did.getId()}`
     }
diff --git a/src/ddo/MetaData.ts b/src/ddo/MetaData.ts
index 34aceb7..01aa38e 100644
--- a/src/ddo/MetaData.ts
+++ b/src/ddo/MetaData.ts
@@ -276,3 +276,15 @@ export interface MetaData {
     additionalInformation?: AdditionalInformation
     curation?: Curation
 }
+
+export interface ServicePrices{
+    serviceIndex: number,
+    price: string
+}
+
+export interface EditableMetaData{
+    description?: string,
+    title?: string,
+    links?: { [name: string]: string }[],
+    servicePrices?: ServicePrices[]
+}
diff --git a/src/ocean/OceanAssets.ts b/src/ocean/OceanAssets.ts
index 719d362..0a52d84 100644
--- a/src/ocean/OceanAssets.ts
+++ b/src/ocean/OceanAssets.ts
@@ -1,7 +1,7 @@
 import { TransactionReceipt } from 'web3-core'
 import { SearchQuery } from '../aquarius/Aquarius'
 import { DDO } from '../ddo/DDO'
-import { MetaData } from '../ddo/MetaData'
+import { MetaData, EditableMetaData } from '../ddo/MetaData'
 import { Service, ServiceAccess } from '../ddo/Service'
 import Account from './Account'
 import DID from './DID'
@@ -384,6 +384,45 @@ export class OceanAssets extends Instantiable {
         return txReceipt
     }
 
+    public async editMetadata(
+        did: string,
+        newMetadata: EditableMetaData,
+        account: Account
+    ): Promise<string> {
+        const oldDdo = await this.ocean.aquarius.retrieveDDO(did)
+        // get a signature
+        const signature = await this.ocean.utils.signature.signForAquarius(
+            oldDdo.updated,
+            account
+        )
+        let result=null
+        if (signature != null)
+            result=await this.ocean.aquarius.editMetadata(
+                did,
+                newMetadata,
+                oldDdo.updated,
+                signature
+            )
+
+        return result
+    }
+
+    public async retire(
+        did: string,
+        account: Account
+    ): Promise<string> {
+        const oldDdo = await this.ocean.aquarius.retrieveDDO(did)
+        // get a signature
+        const signature = await this.ocean.utils.signature.signForAquarius(
+            oldDdo.updated,
+            account
+        )
+        let result=null
+        if (signature != null)
+            result = await this.ocean.aquarius.retire(did, oldDdo.updated, signature)
+        return result
+    }
+
     /**
      * Returns the assets of a consumer.
      * @param  {string} consumer Consumer address.
diff --git a/src/ocean/utils/WebServiceConnector.ts b/src/ocean/utils/WebServiceConnector.ts
index d34e6fe..89cc4d3 100644
--- a/src/ocean/utils/WebServiceConnector.ts
+++ b/src/ocean/utils/WebServiceConnector.ts
@@ -43,13 +43,25 @@ export class WebServiceConnector {
         })
     }
 
-    public delete(url: string): Promise<Response> {
-        return this.fetch(url, {
-            method: 'DELETE',
-            headers: {
-                'Content-type': 'application/json'
-            }
-        })
+    public delete(url: string, payload?: BodyInit): Promise<Response> {
+        if (payload != null) {
+            return this.fetch(url, {
+                method: 'DELETE',
+                body: payload,
+                headers: {
+                    'Content-type': 'application/json'
+                }
+            })
+        }
+        else {
+            return this.fetch(url, {
+                method: 'DELETE',
+                headers: {
+                    'Content-type': 'application/json'
+                }
+            })
+        }
+            
     }
 
     public async downloadFile(