diff --git a/src/gaia/api.ts b/src/gaia/api.ts
index f1e6f8b..052667d 100644
--- a/src/gaia/api.ts
+++ b/src/gaia/api.ts
@@ -6,6 +6,7 @@ import * as Distribution from "../x/distribution";
 import * as Gov from "../x/gov";
 import * as Slashing from "../x/slashing";
 import * as Staking from "../x/staking";
+import * as Link from "../x/link";
 import { defaultTxEncoder } from "../common/stdTx";
 import { stdTxBuilder } from "../common/stdTxBuilder";
 import { Context } from "../core/context";
@@ -50,6 +51,7 @@ export class GaiaApi extends Api<GaiaRest> {
           Gov.registerCodec(codec);
           Slashing.registerCodec(codec);
           Staking.registerCodec(codec);
+          Link.registerCodec(codec);
         }
       },
       ...coreConfig
diff --git a/src/x/link/codec.ts b/src/x/link/codec.ts
new file mode 100644
index 0000000..1e7fc25
--- /dev/null
+++ b/src/x/link/codec.ts
@@ -0,0 +1,6 @@
+import { Codec } from "@node-a-team/ts-amino";
+import { MsgLink } from "./msgs";
+
+export function registerCodec(codec: Codec) {
+  codec.registerConcrete("cyber/Link", MsgLink.prototype);
+}
diff --git a/src/x/link/index.ts b/src/x/link/index.ts
new file mode 100644
index 0000000..3173262
--- /dev/null
+++ b/src/x/link/index.ts
@@ -0,0 +1,2 @@
+export * from "./msgs";
+export * from "./codec";
diff --git a/src/x/link/msgs.ts b/src/x/link/msgs.ts
new file mode 100644
index 0000000..89fb18e
--- /dev/null
+++ b/src/x/link/msgs.ts
@@ -0,0 +1,54 @@
+import { Amino, Type } from "@node-a-team/ts-amino";
+const { Field, DefineStruct } = Amino;
+import { Msg } from "../../core/tx";
+import { AccAddress } from "../../common/address";
+
+@DefineStruct()
+export class Link {
+  @Field.String(0)
+  public from: string;
+
+  @Field.String(1)
+  public to: string;
+
+  constructor(from: string, to: string) {
+    this.from = from;
+    this.to = to;
+  }
+}
+
+@DefineStruct()
+export class MsgLink extends Msg {
+  @Field.Defined(0, {
+    jsonName: "address"
+  })
+  public address: AccAddress;
+
+  @Field.Slice(
+    1,
+    { type: Type.Defined },
+    {
+      jsonName: "links"
+    }
+  )
+  public links: Link[];
+
+  constructor(address: AccAddress, links: Link[]) {
+    super();
+    this.address = address;
+    this.links = links;
+  }
+
+  public getSigners(): AccAddress[] {
+    return [this.address];
+  }
+
+  public validateBasic(): void {
+    for (const link of this.links) {
+      // TODO improve validation
+      if (link.from.length == 0 || link.to.length == 0) {
+        throw new Error("CID is empty");
+      }
+    }
+  }
+}