diff --git a/docs/content/getting-started.md b/docs/content/getting-started.md
index 88bb7c73d..8faa2b391 100644
--- a/docs/content/getting-started.md
+++ b/docs/content/getting-started.md
@@ -80,6 +80,38 @@ PHOENIX_ASSET_PATH
 PHOENIX_WEB_CONFIG
 : Path to phoenix config, empty default value
 
+PHOENIX_WEB_CONFIG_SERVER
+: Server URL, defaults to `http://localhost:9135`
+
+PHOENIX_WEB_CONFIG_THEME
+: Theme, defaults to `owncloud`
+
+PHOENIX_WEB_CONFIG_VERSION
+: Version, defaults to `0.1.0`
+
+PHOENIX_APPS
+: Use multiple times to provide multiple apps
+
+PHOENIX_EXTERNAL_APPS
+: Not supported yet, specify a config.json file via `PHOENIX_WEB_CONFIG`
+
+PHOENIX_OIDC_METADATA_URL
+: OpenID Connect metadata URL, defaults to `http://localhost:9130/.well-known/openid-configuration`
+
+PHOENIX_OIDC_AUTHORITY
+: OpenID Connect authority, defaults to `http://localhost:9130`
+
+PHOENIX_OIDC_CLIENT_ID
+: OpenID Connect client ID, defaults to `phoenix`
+
+PHOENIX_OIDC_RESPONSE_TYPE
+: OpenID Connect response type, defaults to `code`
+
+PHOENIX_OIDC_SCOPE
+: OpenID Connect scope, defaults to `openid profile email`
+
+In case you want to render any additional properties in the config.json you can provide a custom config.json using eg. `PHOENIX_WEB_CONFIG=/path/to/config.json ocis-phoenix server`
+
 ##### Health
 
 PHOENIX_DEBUG_ADDR
@@ -144,6 +176,35 @@ If you prefer to configure the service with commandline flags you can see the av
 --web-config
 : Path to phoenix config, empty default value
 
+--web-config-server
+: Server URL, defaults to `http://localhost:9135`
+
+--web-config-theme
+: Theme, defaults to `owncloud`
+
+--web-config-version
+: Version, defaults to `0.1.0`
+
+--web-config-apps
+: Use multiple times to provide multiple apps
+
+--oidc-metadata-url
+: OpenID Connect metadata URL, defaults to `http://localhost:9130/.well-known/openid-configuration`
+
+--oidc-authority
+: OpenID Connect authority, defaults to `http://localhost:9130`
+
+--oidc-client-id
+: OpenID Connect client ID, defaults to `phoenix`
+
+--oidc-response-type
+: OpenID Connect response type, defaults to `code`
+
+--oidc-scope
+: OpenID Connect scope, defaults to `openid profile email`
+
+In case you want to render any additional properties in the config.json you can provide a custom config.json using  eg. `ocis-phoenix server --web-config=/path/to/config.json`
+
 ##### Health
 
 --debug-addr
diff --git a/pkg/config/config.go b/pkg/config/config.go
index e3f050497..dd78e40a8 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -36,9 +36,50 @@ type Asset struct {
 	Path string
 }
 
-// Phoenix defines the available phoenic configuration.
+// PhoenixConfig defines the available phoenix configuration for a dynamically rendered config.json.
+type PhoenixConfig struct {
+	Server        string `json:"server,omitempty"`
+	Theme         string `json:"theme,omitempty"`
+	Version       string `json:"version,omitempty"` // TODO what is version used for?
+	OpenIDConnect OIDC   `json:"openIdConnect,omitempty"`
+	// TODO add nilasempty when https://go-review.googlesource.com/c/go/+/205897/ is released
+	Apps         []string      `json:"apps"`
+	ExternalApps []ExternalApp `json:"external_apps,omitempty"`
+}
+
+// OIDC defines the available oidc configuration
+type OIDC struct {
+	MetadataURL  string `json:"metadata_url,omitempty"`
+	Authority    string `json:"authority,omitempty"`
+	ClientID     string `json:"client_id,omitempty"`
+	ResponseType string `json:"response_type,omitempty"`
+	Scope        string `json:"scope,omitempty"`
+}
+
+// ExternalApp defines an external phoenix app.
+// {
+//	"name": "hello",
+//	"path": "http://localhost:9105/hello.js",
+//	  "config": {
+//	    "url": "http://localhost:9105"
+//	  }
+//  }
+type ExternalApp struct {
+	Name string `json:"name,omitempty"`
+	Path string `json:"path,omitempty"`
+	// Config is completely dynamic, because it depends on the extension
+	Config map[string]interface{} `json:"config,omitempty"`
+}
+
+// ExternalAppConfig defines an external phoenix app configuration.
+type ExternalAppConfig struct {
+	URL string `json:"url,omitempty"`
+}
+
+// Phoenix defines the available phoenix configuration.
 type Phoenix struct {
-	Path string
+	Path   string
+	Config PhoenixConfig
 }
 
 // Config combines all available configuration parts.
@@ -49,6 +90,7 @@ type Config struct {
 	HTTP    HTTP
 	Tracing Tracing
 	Asset   Asset
+	OIDC    OIDC
 	Phoenix Phoenix
 }
 
diff --git a/pkg/flagset/flagset.go b/pkg/flagset/flagset.go
index 455ddd090..ff4fd15c4 100644
--- a/pkg/flagset/flagset.go
+++ b/pkg/flagset/flagset.go
@@ -52,6 +52,7 @@ func HealthWithConfig(cfg *config.Config) []cli.Flag {
 
 // ServerWithConfig applies cfg to the root flagset
 func ServerWithConfig(cfg *config.Config) []cli.Flag {
+	apps := cli.StringSlice(cfg.Phoenix.Config.Apps)
 	return []cli.Flag{
 		&cli.BoolFlag{
 			Name:        "tracing-enabled",
@@ -148,5 +149,68 @@ func ServerWithConfig(cfg *config.Config) []cli.Flag {
 			EnvVar:      "PHOENIX_WEB_CONFIG",
 			Destination: &cfg.Phoenix.Path,
 		},
+		&cli.StringFlag{
+			Name:        "web-config-server",
+			Value:       "http://localhost:9135",
+			Usage:       "Server URL",
+			EnvVar:      "PHOENIX_WEB_CONFIG_SERVER",
+			Destination: &cfg.Phoenix.Config.Server,
+		},
+		&cli.StringFlag{
+			Name:        "web-config-theme",
+			Value:       "owncloud",
+			Usage:       "Theme",
+			EnvVar:      "PHOENIX_WEB_CONFIG_THEME",
+			Destination: &cfg.Phoenix.Config.Theme,
+		},
+		&cli.StringFlag{
+			Name:        "web-config-version",
+			Value:       "0.1.0",
+			Usage:       "Version",
+			EnvVar:      "PHOENIX_WEB_CONFIG_VERSION",
+			Destination: &cfg.Phoenix.Config.Version,
+		},
+		&cli.StringSliceFlag{
+			Name:   "web-config-apps",
+			Value:  &apps,
+			Usage:  "Use multiple times to provide multiple apps",
+			EnvVar: "PHOENIX_APPS",
+		},
+		// TODO EXTERNAL APPS?
+		&cli.StringFlag{
+			Name:        "oidc-metadata-url",
+			Value:       "http://localhost:9130/.well-known/openid-configuration",
+			Usage:       "OpenID Connect metadata URL",
+			EnvVar:      "PHOENIX_OIDC_METADATA_URL",
+			Destination: &cfg.Phoenix.Config.OpenIDConnect.MetadataURL,
+		},
+		&cli.StringFlag{
+			Name:        "oidc-authority",
+			Value:       "http://localhost:9130",
+			Usage:       "OpenID Connect authority", // TODO rename to Issuer
+			EnvVar:      "PHOENIX_OIDC_AUTHORITY",
+			Destination: &cfg.Phoenix.Config.OpenIDConnect.Authority,
+		},
+		&cli.StringFlag{
+			Name:        "oidc-client-id",
+			Value:       "phoenix",
+			Usage:       "OpenID Connect client ID",
+			EnvVar:      "PHOENIX_OIDC_CLIENT_ID",
+			Destination: &cfg.Phoenix.Config.OpenIDConnect.ClientID,
+		},
+		&cli.StringFlag{
+			Name:        "oidc-response-type",
+			Value:       "code",
+			Usage:       "OpenID Connect response type",
+			EnvVar:      "PHOENIX_OIDC_RESPONSE_TYPE",
+			Destination: &cfg.Phoenix.Config.OpenIDConnect.ResponseType,
+		},
+		&cli.StringFlag{
+			Name:        "oidc-scope",
+			Value:       "openid profile email",
+			Usage:       "OpenID Connect scope",
+			EnvVar:      "PHOENIX_OIDC_SCOPE",
+			Destination: &cfg.Phoenix.Config.OpenIDConnect.Scope,
+		},
 	}
 }
diff --git a/pkg/service/v0/service.go b/pkg/service/v0/service.go
index 902b9e439..5f0a52428 100644
--- a/pkg/service/v0/service.go
+++ b/pkg/service/v0/service.go
@@ -1,6 +1,7 @@
 package svc
 
 import (
+	"encoding/json"
 	"io/ioutil"
 	"net/http"
 	"os"
@@ -56,19 +57,30 @@ func (p Phoenix) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 	p.mux.ServeHTTP(w, r)
 }
 
-// Config implements the Service interface.
-func (p Phoenix) Config(w http.ResponseWriter, r *http.Request) {
-	if _, err := os.Stat(p.config.Phoenix.Path); os.IsNotExist(err) {
+func (p Phoenix) getPayload() (payload []byte, err error) {
+
+	if p.config.Phoenix.Path == "" {
+		// render dynamically using config
+
+		// make apps render as empty array if it is empty
+		// TODO remove once https://github.com/golang/go/issues/27589 is fixed
+		if len(p.config.Phoenix.Config.Apps) == 0 {
+			p.config.Phoenix.Config.Apps = make([]string, 0)
+		}
+
+		return json.Marshal(p.config.Phoenix.Config)
+	}
+
+	// try loading from file
+	if _, err = os.Stat(p.config.Phoenix.Path); os.IsNotExist(err) {
 		p.logger.Error().
 			Err(err).
 			Str("config", p.config.Phoenix.Path).
 			Msg("Phoenix config doesn't exist")
-
-		http.Error(w, ErrConfigInvalid, http.StatusUnprocessableEntity)
 		return
 	}
 
-	payload, err := ioutil.ReadFile(p.config.Phoenix.Path)
+	payload, err = ioutil.ReadFile(p.config.Phoenix.Path)
 
 	if err != nil {
 		p.logger.Error().
@@ -76,6 +88,15 @@ func (p Phoenix) Config(w http.ResponseWriter, r *http.Request) {
 			Str("config", p.config.Phoenix.Path).
 			Msg("Failed to read custom config")
 
+	}
+	return
+}
+
+// Config implements the Service interface.
+func (p Phoenix) Config(w http.ResponseWriter, r *http.Request) {
+
+	payload, err := p.getPayload()
+	if err != nil {
 		http.Error(w, ErrConfigInvalid, http.StatusUnprocessableEntity)
 		return
 	}