diff --git a/graph/generated/generated.go b/graph/generated/generated.go
index 6acf778..79257a8 100644
--- a/graph/generated/generated.go
+++ b/graph/generated/generated.go
@@ -16,6 +16,7 @@ import (
 	"github.com/99designs/gqlgen/graphql/introspection"
 	gqlparser "github.com/vektah/gqlparser/v2"
 	"github.com/vektah/gqlparser/v2/ast"
+
 	"gitlab.com/unboundsoftware/schemas/graph/model"
 )
 
@@ -89,6 +90,7 @@ type ComplexityRoot struct {
 	SubGraphs struct {
 		ID              func(childComplexity int) int
 		MinDelaySeconds func(childComplexity int) int
+		Sdl             func(childComplexity int) int
 		SubGraphs       func(childComplexity int) int
 	}
 
@@ -326,6 +328,13 @@ func (e *executableSchema) Complexity(typeName, field string, childComplexity in
 
 		return e.complexity.SubGraphs.MinDelaySeconds(childComplexity), true
 
+	case "SubGraphs.sdl":
+		if e.complexity.SubGraphs.Sdl == nil {
+			break
+		}
+
+		return e.complexity.SubGraphs.Sdl(childComplexity), true
+
 	case "SubGraphs.subGraphs":
 		if e.complexity.SubGraphs.SubGraphs == nil {
 			break
@@ -503,6 +512,7 @@ type Unchanged {
 type SubGraphs {
   id: ID!
   minDelaySeconds: Int!
+  sdl: String!
   subGraphs: [SubGraph!]!
 }
 
@@ -2155,6 +2165,50 @@ func (ec *executionContext) fieldContext_SubGraphs_minDelaySeconds(ctx context.C
 	return fc, nil
 }
 
+func (ec *executionContext) _SubGraphs_sdl(ctx context.Context, field graphql.CollectedField, obj *model.SubGraphs) (ret graphql.Marshaler) {
+	fc, err := ec.fieldContext_SubGraphs_sdl(ctx, field)
+	if err != nil {
+		return graphql.Null
+	}
+	ctx = graphql.WithFieldContext(ctx, fc)
+	defer func() {
+		if r := recover(); r != nil {
+			ec.Error(ctx, ec.Recover(ctx, r))
+			ret = graphql.Null
+		}
+	}()
+	resTmp, err := ec.ResolverMiddleware(ctx, func(rctx context.Context) (interface{}, error) {
+		ctx = rctx // use context from middleware stack in children
+		return obj.Sdl, nil
+	})
+	if err != nil {
+		ec.Error(ctx, err)
+		return graphql.Null
+	}
+	if resTmp == nil {
+		if !graphql.HasFieldError(ctx, fc) {
+			ec.Errorf(ctx, "must not be null")
+		}
+		return graphql.Null
+	}
+	res := resTmp.(string)
+	fc.Result = res
+	return ec.marshalNString2string(ctx, field.Selections, res)
+}
+
+func (ec *executionContext) fieldContext_SubGraphs_sdl(ctx context.Context, field graphql.CollectedField) (fc *graphql.FieldContext, err error) {
+	fc = &graphql.FieldContext{
+		Object:     "SubGraphs",
+		Field:      field,
+		IsMethod:   false,
+		IsResolver: false,
+		Child: func(ctx context.Context, field graphql.CollectedField) (*graphql.FieldContext, error) {
+			return nil, errors.New("field of type String does not have child fields")
+		},
+	}
+	return fc, nil
+}
+
 func (ec *executionContext) _SubGraphs_subGraphs(ctx context.Context, field graphql.CollectedField, obj *model.SubGraphs) (ret graphql.Marshaler) {
 	fc, err := ec.fieldContext_SubGraphs_subGraphs(ctx, field)
 	if err != nil {
@@ -4622,6 +4676,11 @@ func (ec *executionContext) _SubGraphs(ctx context.Context, sel ast.SelectionSet
 			if out.Values[i] == graphql.Null {
 				out.Invalids++
 			}
+		case "sdl":
+			out.Values[i] = ec._SubGraphs_sdl(ctx, field, obj)
+			if out.Values[i] == graphql.Null {
+				out.Invalids++
+			}
 		case "subGraphs":
 			out.Values[i] = ec._SubGraphs_subGraphs(ctx, field, obj)
 			if out.Values[i] == graphql.Null {
diff --git a/graph/model/models_gen.go b/graph/model/models_gen.go
index 975206d..c1dcb42 100644
--- a/graph/model/models_gen.go
+++ b/graph/model/models_gen.go
@@ -62,6 +62,7 @@ type SubGraph struct {
 type SubGraphs struct {
 	ID              string      `json:"id"`
 	MinDelaySeconds int         `json:"minDelaySeconds"`
+	Sdl             string      `json:"sdl"`
 	SubGraphs       []*SubGraph `json:"subGraphs"`
 }
 
diff --git a/graph/resolver.go b/graph/resolver.go
index 98bc974..a27d195 100644
--- a/graph/resolver.go
+++ b/graph/resolver.go
@@ -12,6 +12,8 @@ import (
 )
 
 //go:generate go run github.com/99designs/gqlgen
+//go:generate gofumpt -w .
+//go:generate goimports -w -local gitlab.com/unboundsoftware/schemas .
 
 // This file will not be regenerated automatically.
 //
diff --git a/graph/schema.graphqls b/graph/schema.graphqls
index b58b244..79409f7 100644
--- a/graph/schema.graphqls
+++ b/graph/schema.graphqls
@@ -40,6 +40,7 @@ type Unchanged {
 type SubGraphs {
   id: ID!
   minDelaySeconds: Int!
+  sdl: String!
   subGraphs: [SubGraph!]!
 }
 
diff --git a/graph/schema.resolvers.go b/graph/schema.resolvers.go
index d3c9684..c1f4c3f 100644
--- a/graph/schema.resolvers.go
+++ b/graph/schema.resolvers.go
@@ -163,9 +163,23 @@ func (r *queryResolver) Supergraph(ctx context.Context, ref string, isAfter *str
 			ChangedAt: sg.ChangedAt,
 		}
 	}
+
+	var serviceSDLs []string
+	for _, id := range services {
+		sg, err := r.fetchSubGraph(ctx, id)
+		if err != nil {
+			return nil, err
+		}
+		serviceSDLs = append(serviceSDLs, sg.Sdl)
+	}
+	sdl, err := sdlmerge.MergeSDLs(serviceSDLs...)
+	if err != nil {
+		return nil, err
+	}
 	return &model.SubGraphs{
 		ID:              lastUpdate,
 		SubGraphs:       subGraphs,
+		Sdl:             sdl,
 		MinDelaySeconds: 10,
 	}, nil
 }