diff --git a/packages/agents/src/agents/zopu.ts b/packages/agents/src/agents/zopu.ts
index 757f79f..dbbbd29 100644
--- a/packages/agents/src/agents/zopu.ts
+++ b/packages/agents/src/agents/zopu.ts
@@ -18,16 +18,8 @@ export default defineAgent(({ env }) => {
   return {
     cwd: repositoryRoot,
     description: "A simple conversational agent with persistent history.",
-    instructions: `You are Zopu, a concise and helpful assistant. Answer the user's request directly. Ask a clarifying question only when the request cannot be completed without one.
-
-## Signals
-A Signal is your structured interpretation of the user's exact messages into a clear problem statement. Capture them precisely.
-
-- Call list_signal_source_messages to see admitted user messages not yet used as evidence.
-- Do NOT create a Signal for greetings, chitchat, or unclear exploration. Just respond.
-- When the user's request is coherent and describes a real problem or goal, compose exactly one Signal: call create_signal once with the ordered messageIds and a structured problem statement {title, summary, desiredOutcome, constraints}.
-- Never call create_signal more than once for the same request. It is idempotent on the ordered message selection, but you should still create at most one.
-- After creating, report the structured problem statement back to the user (title, summary, desired outcome, constraints) so they can confirm or correct it.`,
+    instructions:
+      "You are Zopu, the global planning agent. Help the user clarify and plan work. User messages are durably captured as Signal evidence by the control plane; do not claim that you created a Signal until secure tool execution is wired.",
     model: `${AGENT_MODEL_PROVIDER}/${AGENT_MODEL_NAME}`,
     // sandbox: agentos(),
     sandbox: local({ cwd: repositoryRoot }),
diff --git a/packages/agents/src/tools/signals.ts b/packages/agents/src/tools/signals.ts
deleted file mode 100644
index 498af7d..0000000
--- a/packages/agents/src/tools/signals.ts
+++ /dev/null
@@ -1,153 +0,0 @@
-/**
- * Zopu Signal tools: candidate-evidence listing and structured Signal creation.
- *
- * SECURITY MODEL
- * --------------
- * Both tools call Convex functions (`signals:listAdmittedUnused`,
- * `signals:createFromMessages`) that authorize via the authenticated caller
- * identity (`requireOrganizationMember` → `ctx.auth.getUserIdentity()`). They
- * therefore require a request-scoped {@link ConvexHttpClient} carrying the
- * caller's Bearer JWT — exactly the client `authenticatedAgentRoute` builds
- * per request. We never use a shared/global token or a service token here,
- * because those carry no user identity and cannot satisfy membership checks.
- *
- * The factory closes over an authenticated client plus the resolved
- * organization (agent instance) id. The agent instance id equals the
- * organization id (the hard tenancy boundary enforced by the route), so
- * `organizationId` and `conversationId` are never trusted from the agent.
- */
-import type { Id } from "@code/backend/convex/_generated/dataModel";
-import { defineTool } from "@flue/runtime";
-import type { ConvexHttpClient } from "convex/browser";
-import { makeFunctionReference } from "convex/server";
-import * as v from "valibot";
-
-// ---------------------------------------------------------------------------
-// Typed function references (no generated backend bindings imported here, to
-// keep the agents package decoupled from backend codegen at type-check time).
-// ---------------------------------------------------------------------------
-
-interface ConversationMessageSourceView {
-  readonly messageId: string;
-  readonly clientRequestId: string;
-  readonly rawText: string;
-  readonly submissionId: string | null;
-  readonly createdAt: number;
-}
-
-const listAdmittedUnused = makeFunctionReference<
-  "query",
-  { readonly organizationId: Id<"organizations"> },
-  ConversationMessageSourceView[]
->("signals:listAdmittedUnused");
-
-const createFromMessages = makeFunctionReference<
-  "mutation",
-  {
-    readonly organizationId: Id<"organizations">;
-    readonly projectId?: Id<"projects">;
-    readonly conversationId: string;
-    readonly messageIds: readonly string[];
-    readonly problemStatement: {
-      readonly title: string;
-      readonly summary: string;
-      readonly desiredOutcome: string;
-      readonly constraints: readonly string[];
-    };
-    readonly processedBy: {
-      readonly agentName: string;
-      readonly agentInstanceId: string;
-    };
-  },
-  { readonly signalId: Id<"signals"> }
->("signals:createFromMessages");
-
-/**
- * Input/output schemas shared with the agent instructions.
- */
-const problemStatementSchema = v.object({
-  title: v.pipe(v.string(), v.maxLength(200)),
-  summary: v.pipe(v.string(), v.maxLength(2000)),
-  desiredOutcome: v.pipe(v.string(), v.maxLength(2000)),
-  constraints: v.pipe(v.array(v.pipe(v.string(), v.maxLength(500))), v.maxLength(20)),
-});
-
-/**
- * Build the Zopu Signal tools bound to one authenticated, organization-scoped
- * agent instance.
- *
- * @param client        A request-scoped authenticated Convex client carrying
- *                      the caller's JWT. Built fresh per request; never shared.
- * @param organizationId The caller's organization id. Equals the agent
- *                      instance id and the global conversation id.
- */
-export const createSignalTools = (
-  client: ConvexHttpClient,
-  organizationId: Id<"organizations">
-) => {
-  // The conversation id is the organization id (global Zopu conversation).
-  const conversationId: string = organizationId;
-  const processedBy = {
-    agentInstanceId: organizationId,
-    agentName: "zopu",
-  };
-
-  return [
-    defineTool({
-      description:
-        "List the admitted user messages in this conversation that have not yet been used as Signal evidence, newest first. Use these messageIds as the ordered source selection when composing a Signal.",
-      name: "list_signal_source_messages",
-      output: v.object({
-        messages: v.array(
-          v.object({
-            messageId: v.string(),
-            rawText: v.string(),
-            createdAt: v.number(),
-          })
-        ),
-      }),
-      async run() {
-        const messages = await client.query(listAdmittedUnused, {
-          organizationId,
-        });
-        return {
-          messages: messages.map((message) => ({
-            createdAt: message.createdAt,
-            messageId: message.messageId,
-            rawText: message.rawText,
-          })),
-        };
-      },
-    }),
-    defineTool({
-      description:
-        "Create exactly one Signal from an ordered selection of admitted user messages plus a structured problem statement. Idempotent: the same ordered message selection returns the existing Signal. Call this at most once per coherent request, never for greetings or unclear exploration.",
-      input: v.object({
-        messageIds: v.pipe(
-          v.array(v.string()),
-          v.minLength(1),
-          v.maxLength(50)
-        ),
-        problemStatement: problemStatementSchema,
-        projectId: v.optional(v.pipe(v.string(), v.minLength(1))),
-      }),
-      name: "create_signal",
-      output: v.object({
-        signalId: v.string(),
-      }),
-      async run({ input }) {
-        const result = await client.mutation(createFromMessages, {
-          conversationId,
-          messageIds: [...input.messageIds],
-          organizationId,
-          problemStatement: input.problemStatement,
-          processedBy,
-          ...(input.projectId === undefined
-            ? {}
-            : { projectId: input.projectId as Id<"projects"> }),
-        });
-        return { signalId: result.signalId };
-      },
-    }),
-  ];
-};