diff --git a/server/src/computer/routes.ts b/server/src/computer/routes.ts
index 2f0a3fd92..a7ad2a4c8 100644
--- a/server/src/computer/routes.ts
+++ b/server/src/computer/routes.ts
@@ -485,6 +485,41 @@ export function createComputerRoutes(
       string,
       unknown
     > | null;
+    /*
+     * Shaped per gesture, like the Bot's acting routes shape theirs. Only scroll was checked:
+     * a click with `{"x": "ten"}`, a type with `{"text": 123}` or a key with `{}` travelled
+     * to the computer untouched, and the failure surfaced as whatever the computer returned
+     * for garbage — mapped here to a 500, or a 200 no-op. The shapes below are the ones the
+     * gateway's `HumanInput` type already promises the computer: coordinates in viewport
+     * pixels, text to enter, a key name. Scroll keeps its existing check, which allows an
+     * absent delta the computer reads as its own default distance.
+     */
+    if (kind === "click") {
+      if (
+        typeof body?.x !== "number" ||
+        !Number.isFinite(body.x) ||
+        typeof body?.y !== "number" ||
+        !Number.isFinite(body.y)
+      ) {
+        return context.json(
+          { error: "A click needs numeric x and y coordinates." },
+          400,
+        );
+      }
+    }
+    if (kind === "type") {
+      if (typeof body?.text !== "string") {
+        return context.json({ error: "The text to enter is required." }, 400);
+      }
+    }
+    if (kind === "key") {
+      if (typeof body?.key !== "string" || !body.key) {
+        return context.json(
+          { error: "A key name is required, such as Enter or Tab." },
+          400,
+        );
+      }
+    }
     if (kind === "scroll" && !usableDeltaY(body?.deltaY)) {
       return context.json(badDeltaY, 400);
     }
diff --git a/server/tests/computer-human-input.test.ts b/server/tests/computer-human-input.test.ts
new file mode 100644
index 000000000..c8cbdb879
--- /dev/null
+++ b/server/tests/computer-human-input.test.ts
@@ -0,0 +1,142 @@
+import { describe, expect, test } from "bun:test";
+import type { ComputerGateway } from "../src/computer/gateway";
+import type { PolicyStore } from "../src/computer/policy-store";
+import { createComputerRoutes } from "../src/computer/routes";
+import type { AppVariables } from "../src/auth/guards";
+import type { MiddlewareHandler } from "hono";
+
+/**
+ * A person's own mouse and keyboard, shaped before it travels.
+ *
+ * Only scroll was checked on this route. A click with `{"x": "ten"}`, a type with
+ * `{"text": 123}` or a key with `{}` travelled to the computer untouched, and the failure
+ * surfaced as whatever the computer returned for garbage — a 500 here, or a 200 no-op.
+ * The shapes below are the ones the gateway's `HumanInput` type already promises: `click`
+ * carries viewport-pixel coordinates, `type` carries text, `key` carries a key name.
+ */
+
+const member = {
+  id: "u1",
+  email: "member@openbot.test",
+  role: "user",
+} as const;
+
+function asActor(
+  actor: typeof member,
+): MiddlewareHandler<{ Variables: AppVariables }> {
+  return async (context, next) => {
+    context.set("actor", { ...actor });
+    await next();
+  };
+}
+
+function recordingGateway() {
+  const calls: Array<{ botId: string; input: Record<string, unknown> }> = [];
+  const gateway = {
+    humanInput: async (botId: string, input: Record<string, unknown>) => {
+      calls.push({ botId, input });
+      return { ok: true };
+    },
+  } as unknown as ComputerGateway;
+  return {
+    calls,
+    app: createComputerRoutes(
+      gateway,
+      {} as PolicyStore,
+      asActor(member),
+      async () => true,
+    ),
+  };
+}
+
+async function send(body: unknown, kind: string) {
+  const { app, calls } = recordingGateway();
+  const response = await app.request(
+    `http://openbot.test/bot-1/human/${kind}`,
+    {
+      method: "POST",
+      headers: { "content-type": "application/json" },
+      body: JSON.stringify(body),
+    },
+  );
+  return { response, calls };
+}
+
+describe("human input payloads", () => {
+  test("a click with coordinates still reaches the computer", async () => {
+    const { response, calls } = await send({ x: 10, y: 20 }, "click");
+
+    expect(response.status).toBe(200);
+    expect(calls).toHaveLength(1);
+    expect(calls[0]?.input).toMatchObject({ kind: "click", x: 10, y: 20 });
+  });
+
+  test("a type with text still reaches the computer", async () => {
+    const { response, calls } = await send({ text: "hello" }, "type");
+
+    expect(response.status).toBe(200);
+    expect(calls).toHaveLength(1);
+  });
+
+  test("a key with a name still reaches the computer", async () => {
+    const { response, calls } = await send({ key: "Enter" }, "key");
+
+    expect(response.status).toBe(200);
+    expect(calls).toHaveLength(1);
+  });
+
+  test.each([
+    ["a string x", { x: "ten", y: 20 }],
+    ["a missing x", { y: 20 }],
+    ["a missing y", { x: 10 }],
+    ["NaN x", { x: Number.NaN, y: 20 }],
+    ["Infinity y", { x: 10, y: Number.POSITIVE_INFINITY }],
+    ["null", null],
+    ["an empty body", {}],
+  ])("refuses a click with %s and never forwards it", async (_name, body) => {
+    const { response, calls } = await send(body, "click");
+
+    expect(response.status).toBe(400);
+    await expect(response.json()).resolves.toEqual({
+      error: "A click needs numeric x and y coordinates.",
+    });
+    expect(calls).toHaveLength(0);
+  });
+
+  test.each([
+    ["a number", { text: 123 }],
+    ["null", { text: null }],
+    ["an object", { text: {} }],
+    ["a missing text", {}],
+  ])("refuses a type with %s and never forwards it", async (_name, body) => {
+    const { response, calls } = await send(body, "type");
+
+    expect(response.status).toBe(400);
+    await expect(response.json()).resolves.toEqual({
+      error: "The text to enter is required.",
+    });
+    expect(calls).toHaveLength(0);
+  });
+
+  test.each([
+    ["a number", { key: 123 }],
+    ["an empty name", { key: "" }],
+    ["a missing key", {}],
+    ["null", null],
+  ])("refuses a key with %s and never forwards it", async (_name, body) => {
+    const { response, calls } = await send(body, "key");
+
+    expect(response.status).toBe(400);
+    await expect(response.json()).resolves.toEqual({
+      error: "A key name is required, such as Enter or Tab.",
+    });
+    expect(calls).toHaveLength(0);
+  });
+
+  test("a scroll without a delta still travels, as before", async () => {
+    const { response, calls } = await send({}, "scroll");
+
+    expect(response.status).toBe(200);
+    expect(calls).toHaveLength(1);
+  });
+});
diff --git a/server/tests/computer-routes.test.ts b/server/tests/computer-routes.test.ts
index 36f82b4e6..cae6ff409 100644
--- a/server/tests/computer-routes.test.ts
+++ b/server/tests/computer-routes.test.ts
@@ -198,7 +198,7 @@ describe("human input", () => {
 
   test("a body naming its own kind cannot reach the shell either", async () => {
     const { calls } = await send(
-      { kind: "../exec", command: "cat /workspace/notes" },
+      { kind: "../exec", text: "cat /workspace/notes" },
       "type",
     );
 
diff --git a/server/tests/human-input-end-to-end.test.ts b/server/tests/human-input-end-to-end.test.ts
index 3e3bdc00d..c11e96a09 100644
--- a/server/tests/human-input-end-to-end.test.ts
+++ b/server/tests/human-input-end-to-end.test.ts
@@ -147,7 +147,12 @@ describe("a person's input, end to end", () => {
 
   test("the four gestures still reach their own endpoints", async () => {
     for (const kind of ["click", "type", "key", "scroll"]) {
-      const { received } = await drive(kind, { x: 1, y: 1, text: "hello" });
+      const { received } = await drive(kind, {
+        x: 1,
+        y: 1,
+        text: "hello",
+        key: "Enter",
+      });
 
       expect(received.map((request) => request.path)).toEqual([
         `/human/${kind}`,