diff --git a/apps/supervisor/src/index.ts b/apps/supervisor/src/index.ts
index c0779eb72..3a1e6165f 100644
--- a/apps/supervisor/src/index.ts
+++ b/apps/supervisor/src/index.ts
@@ -259,6 +259,8 @@ class ManagedSupervisor {
         await runWideEvent(
           {
             ...this.wideEventOpts,
+            op: "dequeue",
+            kind: "inbound",
             traceparent,
             setup: (state) => {
               setMeta(state, "run_id", message.run.friendlyId);
@@ -269,8 +271,6 @@ class ManagedSupervisor {
                 setMeta(state, "deployment_id", message.deployment.friendlyId);
               }
               setMeta(state, "machine_preset", message.run.machine.name);
-              state.extras.op = "dequeue";
-              state.extras.kind = "inbound";
               state.extras.iteration = "dequeue";
               state.extras.dequeue_response_ms = dequeueResponseMs;
               state.extras.polling_interval_ms = pollingIntervalMs;
diff --git a/apps/supervisor/src/services/computeSnapshotService.ts b/apps/supervisor/src/services/computeSnapshotService.ts
index a4684a104..35ac6acec 100644
--- a/apps/supervisor/src/services/computeSnapshotService.ts
+++ b/apps/supervisor/src/services/computeSnapshotService.ts
@@ -76,9 +76,9 @@ export class ComputeSnapshotService {
     this.timerWheel.submit(runFriendlyId, data);
     emitOneShot({
       ...this.wideEventOpts,
+      op: "snapshot.schedule",
+      kind: "event",
       populate: (state) => {
-        state.extras.op = "snapshot.schedule";
-        state.extras.kind = "event";
         state.meta.run_id = runFriendlyId;
         state.meta.snapshot_id = data.snapshotFriendlyId;
         state.extras.runner_id = data.runnerId;
@@ -98,9 +98,9 @@ export class ComputeSnapshotService {
     if (cancelled) {
       emitOneShot({
         ...this.wideEventOpts,
+        op: "snapshot.canceled",
+        kind: "event",
         populate: (state) => {
-          state.extras.op = "snapshot.canceled";
-          state.extras.kind = "event";
           state.meta.run_id = runFriendlyId;
         },
       });
@@ -121,7 +121,6 @@ export class ComputeSnapshotService {
     // become extras/meta on the same wide event - no nested emission.
     const state = fromContext();
     if (state) {
-      state.extras.op = "snapshot.callback";
       state.extras["snapshot.status"] = body.status;
       if (body.instance_id) state.extras["snapshot.instance_id"] = body.instance_id;
       if (body.duration_ms !== undefined) state.extras["snapshot.duration_ms"] = body.duration_ms;
@@ -247,9 +246,9 @@ export class ComputeSnapshotService {
     await runWideEvent(
       {
         ...this.wideEventOpts,
+        op: "snapshot.dispatch",
+        kind: "scheduled",
         setup: (state) => {
-          state.extras.op = "snapshot.dispatch";
-          state.extras.kind = "scheduled";
           state.meta.run_id = snapshot.runFriendlyId;
           state.meta.snapshot_id = snapshot.snapshotFriendlyId;
           state.extras.runner_id = snapshot.runnerId;
diff --git a/apps/supervisor/src/wideEvents/emit.ts b/apps/supervisor/src/wideEvents/emit.ts
index a1644237d..f3f765cdd 100644
--- a/apps/supervisor/src/wideEvents/emit.ts
+++ b/apps/supervisor/src/wideEvents/emit.ts
@@ -27,6 +27,9 @@ export function emit(state: State): void {
   appendIfSet(out, "region", state.region);
   appendIfSet(out, "node_id", state.nodeId);
 
+  appendIfSet(out, "op", state.op);
+  appendIfSet(out, "kind", state.kind);
+
   out.ok = state.ok;
   if (state.statusCode !== 0) out.status = state.statusCode;
   out.duration_ms = state.durationMs;
diff --git a/apps/supervisor/src/wideEvents/middleware.test.ts b/apps/supervisor/src/wideEvents/middleware.test.ts
index 18a6469d7..afb59f43d 100644
--- a/apps/supervisor/src/wideEvents/middleware.test.ts
+++ b/apps/supervisor/src/wideEvents/middleware.test.ts
@@ -20,7 +20,7 @@ describe("runWideEvent", () => {
   it("emits one event with ok=true when no statusCode is set", async () => {
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: true, route: "/x", method: "POST" },
+        { service: "supervisor", env: {}, enabled: true, op: "test", route: "/x", method: "POST" },
         async () => undefined
       );
     });
@@ -39,7 +39,7 @@ describe("runWideEvent", () => {
   it("derives ok from statusCode set via finalize", async () => {
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: true },
+        { service: "supervisor", env: {}, enabled: true, op: "test" },
         async () => undefined,
         (state) => {
           state.statusCode = 200;
@@ -56,7 +56,7 @@ describe("runWideEvent", () => {
   it("treats 4xx as ok=false", async () => {
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: true },
+        { service: "supervisor", env: {}, enabled: true, op: "test" },
         async () => undefined,
         (state) => {
           state.statusCode = 400;
@@ -73,7 +73,7 @@ describe("runWideEvent", () => {
   it("emits ok=false with error.kind=internal on throw", async () => {
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: true },
+        { service: "supervisor", env: {}, enabled: true, op: "test" },
         async () => {
           throw new Error("boom");
         }
@@ -91,7 +91,7 @@ describe("runWideEvent", () => {
   it("threads state through AsyncLocalStorage", async () => {
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: true },
+        { service: "supervisor", env: {}, enabled: true, op: "test" },
         async () => {
           setMeta(fromContext(), "run_id", "run_abc");
         }
@@ -108,7 +108,7 @@ describe("runWideEvent", () => {
     const tp = "00-4bf92f3577b34da6a3ce929d0e0e4736-00f067aa0ba902b7-01";
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: true, traceparent: tp },
+        { service: "supervisor", env: {}, enabled: true, op: "test", traceparent: tp },
         async () => undefined
       );
     });
@@ -124,7 +124,7 @@ describe("runWideEvent", () => {
         {
           service: "supervisor",
           env: {},
-          enabled: true,
+          enabled: true, op: "test",
           setup: (state) => {
             state.meta.run_id = "run_abc";
             state.extras.iteration = "dequeue";
@@ -144,7 +144,7 @@ describe("runWideEvent", () => {
     let seenState: ReturnType<typeof fromContext> = null;
     const lines = await captureStdout(async () => {
       await runWideEvent(
-        { service: "supervisor", env: {}, enabled: false },
+        { service: "supervisor", env: {}, enabled: false, op: "test" },
         async () => {
           seenState = fromContext();
         }
@@ -159,7 +159,7 @@ describe("runWideEvent", () => {
       await Promise.all(
         ["a", "b", "c"].map((tag) =>
           runWideEvent(
-            { service: "supervisor", env: {}, enabled: true },
+            { service: "supervisor", env: {}, enabled: true, op: "test" },
             async () => {
               const s = fromContext();
               if (!s) throw new Error("no state");
@@ -182,7 +182,7 @@ describe("emitOneShot", () => {
       emitOneShot({
         service: "supervisor",
         env: {},
-        enabled: true,
+        enabled: true, op: "test",
         populate: (s) => {
           s.meta.run_id = "run_abc";
           s.extras.event = "run:start";
@@ -200,7 +200,7 @@ describe("emitOneShot", () => {
 
   it("emits nothing when disabled", async () => {
     const lines = await captureStdout(() => {
-      emitOneShot({ service: "supervisor", env: {}, enabled: false });
+      emitOneShot({ service: "supervisor", env: {}, enabled: false, op: "test" });
     });
     expect(lines).toHaveLength(0);
   });
diff --git a/apps/supervisor/src/wideEvents/middleware.ts b/apps/supervisor/src/wideEvents/middleware.ts
index a87a1885d..034c13641 100644
--- a/apps/supervisor/src/wideEvents/middleware.ts
+++ b/apps/supervisor/src/wideEvents/middleware.ts
@@ -18,6 +18,10 @@ export type WideEventOptions = {
 
 /** Per-invocation options layered on top of `WideEventOptions`. */
 export type WideEventLifecycleOptions = WideEventOptions & {
+  /** Operation discriminator (`instance.create`, `dequeue`, ...). Required. */
+  op: string;
+  /** Event shape: `inbound` | `outbound` | `event` | `scheduled`. Optional. */
+  kind?: string;
   /** Route template (HTTP only) captured into `extras.route`. */
   route?: string;
   /** HTTP method captured into `extras.method`. */
@@ -54,6 +58,8 @@ export async function runWideEvent<T>(
     env: opts.env,
     inboundRequestId: opts.inboundRequestId,
     traceparent: opts.traceparent,
+    op: opts.op,
+    kind: opts.kind,
   });
   if (opts.route) state.extras.route = opts.route;
   if (opts.method) state.extras.method = opts.method;
@@ -94,6 +100,8 @@ export async function runWideEvent<T>(
  */
 export function emitOneShot(
   opts: WideEventOptions & {
+    op: string;
+    kind?: string;
     traceparent?: string;
     populate?: (state: State) => void;
   }
@@ -103,6 +111,8 @@ export function emitOneShot(
     service: opts.service,
     env: opts.env,
     traceparent: opts.traceparent,
+    op: opts.op,
+    kind: opts.kind,
   });
   if (opts.populate) opts.populate(state);
   state.ok = true;
diff --git a/apps/supervisor/src/wideEvents/new.ts b/apps/supervisor/src/wideEvents/new.ts
index 2b7c88b7c..79d3e1593 100644
--- a/apps/supervisor/src/wideEvents/new.ts
+++ b/apps/supervisor/src/wideEvents/new.ts
@@ -37,6 +37,10 @@ export type NewStateOptions = {
   inboundRequestId?: string;
   /** Optional inbound W3C traceparent (HTTP header, queue message field). */
   traceparent?: string;
+  /** Operation discriminator. Dotted `noun.verb`. Defaults to empty (set later). */
+  op?: string;
+  /** Event shape: `inbound` | `outbound` | `event` | `scheduled`. Defaults to empty. */
+  kind?: string;
 };
 
 /**
@@ -62,6 +66,8 @@ export function newState(opts: NewStateOptions): State {
     commitSha: opts.env.commitSha,
     region: opts.env.region,
     nodeId: opts.env.nodeId,
+    op: opts.op ?? "",
+    kind: opts.kind ?? "",
     meta: {},
     phases: [],
     ok: false,
diff --git a/apps/supervisor/src/wideEvents/state.ts b/apps/supervisor/src/wideEvents/state.ts
index 1929e5e98..a0e2997b1 100644
--- a/apps/supervisor/src/wideEvents/state.ts
+++ b/apps/supervisor/src/wideEvents/state.ts
@@ -22,6 +22,22 @@ export type State = {
   region?: string;
   nodeId?: string;
 
+  /**
+   * Operation discriminator. Dotted `noun.verb` (e.g. `instance.create`,
+   * `snapshot.dispatch`). Low cardinality - bounded set per service, not
+   * unbounded. Empty allowed during construction but expected to be set
+   * before emit.
+   */
+  op: string;
+
+  /**
+   * Event shape. `inbound` for received requests, `outbound` for outgoing
+   * calls, `event` for ambient occurrences with no meaningful duration,
+   * `scheduled` for timer-driven work. Empty allowed; omitted from emit
+   * when empty.
+   */
+  kind: string;
+
   // Caller-attached opaque metadata, flattened to `meta.<key>` on emit.
   meta: Record<string, string>;
 
diff --git a/apps/supervisor/src/workloadServer/index.ts b/apps/supervisor/src/workloadServer/index.ts
index e4bb4625a..f5c5ded14 100644
--- a/apps/supervisor/src/workloadServer/index.ts
+++ b/apps/supervisor/src/workloadServer/index.ts
@@ -196,15 +196,13 @@ export class WorkloadServer extends EventEmitter<WorkloadServerEvents> {
       {
         ...this.wideEventOpts,
         enabled,
+        op,
+        kind: "inbound",
         route,
         method,
         traceparent: this.headerValueFromRequest(ctx.req, "traceparent"),
         inboundRequestId: this.headerValueFromRequest(ctx.req, "x-request-id"),
-        setup: (state) => {
-          state.extras.op = op;
-          state.extras.kind = "inbound";
-          this.attachRouteMeta(state, ctx.params);
-        },
+        setup: (state) => this.attachRouteMeta(state, ctx.params),
       },
       fn,
       (state) => {
@@ -679,9 +677,9 @@ export class WorkloadServer extends EventEmitter<WorkloadServerEvents> {
       ) => {
         emitOneShot({
           ...this.wideEventOpts,
+          op: event === "run_connected" ? "socket.run.connected" : "socket.run.disconnected",
+          kind: "event",
           populate: (state) => {
-            state.extras.op = event === "run_connected" ? "socket.run.connected" : "socket.run.disconnected";
-            state.extras.kind = "event";
             state.extras.event = event;
             setMeta(state, "run_id", friendlyId);
             if (socket.data.deploymentId) {