diff --git a/.env.sample b/.env.sample
index fe1a9f8f7..f8fd70de1 100644
--- a/.env.sample
+++ b/.env.sample
@@ -34,3 +34,6 @@ SMTP_HOST=localhost:1025
 SMTP_USER=
 SMTP_PASS=
 SMTP_FROM="Crust" <info@crust.tech>
+
+SUBSCRIPTION_KEY=E7ox7cDMmBzsFS15Ub43KKdbBg6gqOYiUhK3nRN0BlpNzt88mHLycahhVfrJCccc
+SUBSCRIPTION_DOMAIN=local.crust.tech
diff --git a/Gopkg.lock b/Gopkg.lock
index e43565439..2649d843b 100644
--- a/Gopkg.lock
+++ b/Gopkg.lock
@@ -44,6 +44,14 @@
   pruneopts = "UT"
   revision = "982855dad3e1cd68828d2106997539f36fcf6601"
 
+[[projects]]
+  branch = "master"
+  digest = "1:b2d8bf10f6279453f6771158d7afcbb2e047714f7d2e2204f2ea9d630d90d4f2"
+  name = "github.com/crusttech/permit"
+  packages = ["pkg/permit"]
+  pruneopts = "UT"
+  revision = "6c0c4bece8da7f75a52930f3c07d01a5406499bb"
+
 [[projects]]
   digest = "1:ffe9824d294da03b391f44e1ae8281281b4afc1bdaa9588c9097785e3af10cec"
   name = "github.com/davecgh/go-spew"
@@ -512,6 +520,7 @@
     "github.com/SentimensRG/ctx",
     "github.com/SentimensRG/ctx/sigctx",
     "github.com/crusttech/go-oidc",
+    "github.com/crusttech/permit/pkg/permit",
     "github.com/davecgh/go-spew/spew",
     "github.com/dgrijalva/jwt-go",
     "github.com/disintegration/imaging",
@@ -528,6 +537,7 @@
     "github.com/jmoiron/sqlx/types",
     "github.com/joho/godotenv",
     "github.com/joho/godotenv/autoload",
+    "github.com/lann/builder",
     "github.com/markbates/goth",
     "github.com/markbates/goth/gothic",
     "github.com/markbates/goth/providers/facebook",
diff --git a/cmd/system-cli/main.go b/cmd/system-cli/main.go
index cec052b8b..973ee89d4 100644
--- a/cmd/system-cli/main.go
+++ b/cmd/system-cli/main.go
@@ -23,7 +23,6 @@ func main() {
 
 	var commands []string
 	if len(os.Args) > 0 {
-
 		// @todo migrate to a proper solution (eg: https://github.com/spf13/cobra)
 		commands = os.Args[1:]
 		for a, arg := range os.Args {
diff --git a/cmd/system/main.go b/cmd/system/main.go
index 6f4d430a6..2b66e5ca7 100644
--- a/cmd/system/main.go
+++ b/cmd/system/main.go
@@ -4,6 +4,10 @@ import (
 	"log"
 	"os"
 
+	context "github.com/SentimensRG/ctx"
+	"github.com/SentimensRG/ctx/sigctx"
+
+	"github.com/crusttech/crust/internal/subscription"
 	service "github.com/crusttech/crust/system"
 
 	"github.com/crusttech/crust/internal/auth"
@@ -11,7 +15,15 @@ import (
 )
 
 func main() {
-	flags("system", service.Flags, auth.Flags, rbac.Flags)
+	ctx := context.AsContext(sigctx.New())
+
+	flags(
+		"system",
+		service.Flags,
+		auth.Flags,
+		rbac.Flags,
+		subscription.Flags,
+	)
 
 	// log to stdout not stderr
 	log.SetOutput(os.Stdout)
@@ -30,7 +42,16 @@ func main() {
 	case "help":
 	case "merge-users":
 	default:
-		if err := service.Start(); err != nil {
+		log.Println("Validating subscription")
+		// Checks subscription & runs internal checker that runs every 24h
+		if err := subscription.Check(ctx); err != nil {
+			log.Printf("Subscription could not be validated, reason: %v", err)
+			os.Exit(-1)
+		} else {
+			log.Println("Subscription valdiated")
+		}
+
+		if err := service.StartRestAPI(ctx); err != nil {
 			log.Fatalf("Error starting/running: %+v", err)
 		}
 	}
diff --git a/internal/config/subscription.go b/internal/config/subscription.go
new file mode 100644
index 000000000..8f248a107
--- /dev/null
+++ b/internal/config/subscription.go
@@ -0,0 +1,33 @@
+package config
+
+import (
+	"github.com/namsral/flag"
+)
+
+type (
+	Subscription struct {
+		Key    string
+		Domain string
+	}
+)
+
+var subscription *Subscription
+
+func (c *Subscription) Validate() error {
+	if c == nil {
+		return nil
+	}
+
+	return nil
+}
+
+func (*Subscription) Init(prefix ...string) *Subscription {
+	if subscription != nil {
+		return subscription
+	}
+
+	subscription = new(Subscription)
+	flag.StringVar(&subscription.Key, "subscription-key", "", "Subscription key")
+	flag.StringVar(&subscription.Domain, "subscription-domain", "", "Domain")
+	return subscription
+}
diff --git a/internal/subscription/check.go b/internal/subscription/check.go
new file mode 100644
index 000000000..20a78f91a
--- /dev/null
+++ b/internal/subscription/check.go
@@ -0,0 +1,52 @@
+package subscription
+
+import (
+	"context"
+
+	"github.com/pkg/errors"
+
+	"github.com/crusttech/permit/pkg/permit"
+)
+
+// Check for subscription
+func Check(ctx context.Context) error {
+	p := permit.Permit{
+		Key:    flags.subscription.Key,
+		Domain: flags.subscription.Domain,
+	}
+
+	// Do not collect stats on local domains.
+	// if p.Domain != "local.crust.tech" {
+	// @todo collect & pass attributes (no of users....) to be validated by permit.crust.tech subscription server.
+	p.Attributes = map[string]int{
+		"messaging.enabled": 1,
+		// "messaging.max-public-channels": 1,
+		// "messaging.max-messages": 1,
+		// "messaging.max-users": 1,
+		// "messaging.max-private-channels": 1,
+
+		"system.enabled": 1,
+		// "system.max-organisations": 1,
+		// "system.max-users": 1,
+		// "system.max-teams": 1,
+
+		"compose.enabled": 1,
+		// "compose.max-modules": 1,
+		// "compose.max-pages": 1,
+		// "compose.max-triggers": 1,
+		// "compose.max-users": 1,
+		// "compose.max-namespaces": 1,
+		// "compose.max-charts": 1,
+	}
+	// }
+
+	if p, err := permit.Check(ctx, p); err != nil {
+		return errors.Wrap(err, "unable to check for licence")
+	} else if !p.IsValid() {
+		return err
+	} else if p.Domain != flags.subscription.Domain {
+		return errors.Errorf("subscription domains do not match (%s <> %s)", p.Domain, flags.subscription.Domain)
+	}
+
+	return nil
+}
diff --git a/internal/subscription/flags.go b/internal/subscription/flags.go
new file mode 100644
index 000000000..02e2283fb
--- /dev/null
+++ b/internal/subscription/flags.go
@@ -0,0 +1,35 @@
+package subscription
+
+import (
+	"github.com/crusttech/crust/internal/config"
+)
+
+type (
+	localFlags struct {
+		subscription *config.Subscription
+	}
+)
+
+var flags *localFlags
+
+// Flags matches signature for main()
+func Flags(prefix ...string) {
+	new(localFlags).Init(prefix...)
+}
+
+func (f *localFlags) Validate() error {
+	if err := f.subscription.Validate(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func (f *localFlags) Init(prefix ...string) *localFlags {
+	if flags != nil {
+		return flags
+	}
+	flags = &localFlags{
+		new(config.Subscription).Init(prefix...),
+	}
+	return flags
+}
diff --git a/system/start.go b/system/start.go
index 3ea6c8202..9d9ce88e7 100644
--- a/system/start.go
+++ b/system/start.go
@@ -1,14 +1,13 @@
 package service
 
 import (
+	"context"
 	"fmt"
 	"log"
 	"net"
 	"net/http"
 	"os"
 
-	"github.com/SentimensRG/ctx"
-	"github.com/SentimensRG/ctx/sigctx"
 	"github.com/pkg/errors"
 	"github.com/titpetric/factory/resputil"
 
@@ -75,7 +74,7 @@ func InitDb() error {
 	return nil
 }
 
-func Start() error {
+func StartRestAPI(ctx context.Context) error {
 	log.Printf("Starting "+os.Args[0]+", version: %v, built on: %v", version.Version, version.BuildTime)
 	log.Println("Starting http server on address " + flags.http.Addr)
 	listener, err := net.Listen("tcp", flags.http.Addr)
@@ -87,9 +86,8 @@ func Start() error {
 		go metrics.NewMonitor(flags.monitor.Interval)
 	}
 
-	var deadline = sigctx.New()
-	go http.Serve(listener, Routes(ctx.AsContext(deadline)))
-	<-deadline.Done()
+	go http.Serve(listener, Routes(ctx))
+	<-ctx.Done()
 
 	return nil
 }
diff --git a/vendor/github.com/crusttech/permit/LICENCE b/vendor/github.com/crusttech/permit/LICENCE
new file mode 100644
index 000000000..d64569567
--- /dev/null
+++ b/vendor/github.com/crusttech/permit/LICENCE
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/vendor/github.com/crusttech/permit/pkg/permit/client.go b/vendor/github.com/crusttech/permit/pkg/permit/client.go
new file mode 100644
index 000000000..20eda3db5
--- /dev/null
+++ b/vendor/github.com/crusttech/permit/pkg/permit/client.go
@@ -0,0 +1,70 @@
+package permit
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"net/http"
+
+	"github.com/pkg/errors"
+)
+
+type (
+	httpClient interface {
+		Do(req *http.Request) (*http.Response, error)
+	}
+)
+
+const (
+	permitCheckEndpoint = "https://permit.crust.tech/check"
+)
+
+func Check(ctx context.Context, p Permit) (*Permit, error) {
+	return CheckWithClient(ctx, http.DefaultClient, p)
+}
+
+func CheckWithClient(ctx context.Context, client httpClient, p Permit) (*Permit, error) {
+	if len(p.Key) == 0 {
+		return nil, errors.New("key not set")
+	} else if len(p.Key) != KeyLength {
+		return nil, errors.Errorf("invalid key length (%d chars)", len(p.Key))
+	}
+
+	buf := &bytes.Buffer{}
+	if err := json.NewEncoder(buf).Encode(p); err != nil {
+		return nil, errors.Wrap(err, "permit encoding failed")
+	}
+
+	if req, err := http.NewRequest("POST", permitCheckEndpoint, buf); err != nil {
+		return nil, errors.Wrap(err, "unable to create request")
+	} else {
+		return CheckWithRequest(client, req.WithContext(ctx))
+	}
+}
+
+func CheckWithRequest(client httpClient, request *http.Request) (p *Permit, err error) {
+	var rsp *http.Response
+	if rsp, err = client.Do(request); err != nil {
+		return nil, errors.Wrap(err, "unable to fetch permit")
+	}
+
+	defer rsp.Body.Close()
+
+	switch rsp.StatusCode {
+	case http.StatusBadRequest:
+		return nil, errors.New("bad request")
+	case http.StatusNotFound:
+		return nil, errors.New("subscription key not found")
+	case http.StatusInternalServerError:
+		return nil, errors.New("subscription server error")
+	case http.StatusUnauthorized:
+		return nil, errors.New("subscription key invalid")
+	}
+
+	p = &Permit{}
+	if err = json.NewDecoder(rsp.Body).Decode(&p); err != nil {
+		return nil, errors.Wrap(err, "unable to decode response into permit")
+	}
+
+	return
+}
diff --git a/vendor/github.com/crusttech/permit/pkg/permit/permit.go b/vendor/github.com/crusttech/permit/pkg/permit/permit.go
new file mode 100644
index 000000000..e193213b7
--- /dev/null
+++ b/vendor/github.com/crusttech/permit/pkg/permit/permit.go
@@ -0,0 +1,35 @@
+package permit
+
+import (
+	"time"
+
+	"github.com/pkg/errors"
+)
+
+type (
+	Permit struct {
+		Version    uint           `json:"version"`
+		Key        string         `json:"key"`
+		Domain     string         `json:"domain"`
+		Expires    *time.Time     `json:"expires,omitempty"`
+		Valid      bool           `json:"valid"`
+		Attributes map[string]int `json:"attributes"`
+	}
+)
+
+const (
+	// KeyLength
+	KeyLength = 64
+)
+
+var (
+	PermitNotFound = errors.New("permit not found")
+)
+
+func (p Permit) IsValid() bool {
+	return p.Valid && !p.Expired()
+}
+
+func (p Permit) Expired() bool {
+	return p.Expires != nil && p.Expires.Before(time.Now())
+}