diff --git a/src/bindings/portable-client.ts b/src/bindings/portable-client.ts
index a9d1aa3..8d9a4f5 100644
--- a/src/bindings/portable-client.ts
+++ b/src/bindings/portable-client.ts
@@ -73,5 +73,5 @@ export function generatePortableClientBindings(
   }
   const groups = (entries: Map<string, string[]>) =>
     [...entries].map(([name, values]) => `${JSON.stringify(name)}: {${values.join(",\n")}}`).join(",\n");
-  return `// Generated application descriptors. Regenerate; do not edit.\nimport { defineOperationDescriptor, type ManagedReference, type ReplicaProjection, type LocalQueryDescriptor } from ${JSON.stringify(options.runtimeModule ?? "@quixos/camino-replica-core")};\nexport const planDigest = ${JSON.stringify(plan.digest)};\nexport const operations = {${groups(atoms)}} as const;\nexport const queries = {${groups(queries)}} as const;\nexport const views = {${groups(views)}} as const;\nexport const unavailable = ${JSON.stringify(unavailable)} as const;\n`;
+  return `// Generated application descriptors. Regenerate; do not edit.\nimport { defineOperationDescriptor, type PreparedChange, type ManagedReference, type ReplicaProjection, type LocalQueryDescriptor } from ${JSON.stringify(options.runtimeModule ?? "@quixos/camino-replica-core")};\nexport const planDigest = ${JSON.stringify(plan.digest)};\nexport const operations = {${groups(atoms)}} as const;\nexport const queries = {${groups(queries)}} as const;\nexport const views = {${groups(views)}} as const;\nexport const unavailable = ${JSON.stringify(unavailable)} as const;\n`;
 }
diff --git a/src/bindings/portable.ts b/src/bindings/portable.ts
index be5a90d..bb62c06 100644
--- a/src/bindings/portable.ts
+++ b/src/bindings/portable.ts
@@ -29,6 +29,16 @@ const expectation = (e: ObjectExpectation) => ({
 /** The protocol IR and replica wire schema intentionally share structure, not reference identity. */
 export function portableValueSchema(type: ValueType): unknown {
   switch (type.kind) {
+    case "change":
+      return {
+        kind: "record",
+        fields: {
+          codec: { kind: "scalar", name: "string" },
+          profile: { kind: "scalar", name: "string" },
+          generation: { kind: "scalar", name: "string" },
+          changes: { kind: "list", value: { kind: "scalar", name: "bytes" } },
+        },
+      };
     case "scalar":
       return type;
     case "builtin":
@@ -55,6 +65,8 @@ export function portableValueSchema(type: ValueType): unknown {
 export function tsType(type: ValueType): string {
   portableValueSchema(type);
   switch (type.kind) {
+    case "change":
+      return `PreparedChange<${tsType(type.value)}>`;
     case "scalar":
       return type.name === "bool"
         ? "boolean"
@@ -125,6 +137,10 @@ function methods(schema: BindingSchema, entry: PackageExport, port: DependencyPo
           writable();
           return method("set", { kind: "state", primitive }, req.valueType, unit);
         }
+        if (primitive === "edit") {
+          writable();
+          return method("edit", { kind: "state", primitive }, { kind: "change", value: req.valueType }, unit);
+        }
         throw new PortableBindingError(path, `State ${primitive} is not supported by this portable adapter yet`);
       });
     case "edge": {
@@ -248,5 +264,5 @@ export function generatePortableTypeScriptBindings(
       methods: all.map((m) => ({ ...m, input: portableValueSchema(m.input), output: portableValueSchema(m.output) })),
     });
   }
-  return `// Generated portable bindings. Regenerate from the checked capability schema; do not edit.\nimport { definePortableRegistry, type PortableExport, type ManagedReference, type ExactReference, type MutationKey } from ${q(options.runtimeModule ?? "@quixos/camino-replica-core")};\nexport const bindingDigest = ${q(hexDigest(schema))};\nexport const packageRevision = ${q(revision)};\nexport const target = ${q(options.target)};\nexport type Contexts = { ${contexts.join(";\n")} };\nexport type PortableImplementation = { ${implementations.join(";\n")} };\nexport const declarations = ${JSON.stringify(descriptors, null, 2)} as const satisfies readonly PortableExport[];\nexport function createRegistry(handlers: PortableImplementation) { const installed = { ...handlers }; return definePortableRegistry(declarations, { ${adapters.join(",\n")} }); }\n`;
+  return `// Generated portable bindings. Regenerate from the checked capability schema; do not edit.\nimport { definePortableRegistry, type PortableExport, type PreparedChange, type ManagedReference, type ExactReference, type MutationKey } from ${q(options.runtimeModule ?? "@quixos/camino-replica-core")};\nexport const bindingDigest = ${q(hexDigest(schema))};\nexport const packageRevision = ${q(revision)};\nexport const target = ${q(options.target)};\nexport type Contexts = { ${contexts.join(";\n")} };\nexport type PortableImplementation = { ${implementations.join(";\n")} };\nexport const declarations = ${JSON.stringify(descriptors, null, 2)} as const satisfies readonly PortableExport[];\nexport function createRegistry(handlers: PortableImplementation) { const installed = { ...handlers }; return definePortableRegistry(declarations, { ${adapters.join(",\n")} }); }\n`;
 }