diff --git a/packages/coding-agent/src/extensibility/extensions/wrapper.ts b/packages/coding-agent/src/extensibility/extensions/wrapper.ts
index 8ce2305f2..7618e305f 100644
--- a/packages/coding-agent/src/extensibility/extensions/wrapper.ts
+++ b/packages/coding-agent/src/extensibility/extensions/wrapper.ts
@@ -239,6 +239,7 @@ export class ExtensionToolWrapper<TParameters extends TSchema = TSchema, TDetail
 		// short-circuit above.
 		const resolvedArgs = approvalArgs(effectiveParams, context);
 		const resolved = resolveApproval(this.tool, resolvedArgs, approvalMode, userPolicies);
+		context?.xdevTierResolved?.(resolved.tier);
 		if (resolved.policy === "deny") {
 			throw new Error(
 				`Tool "${this.tool.name}" is blocked by user policy.\n` +
diff --git a/packages/coding-agent/src/tools/context.ts b/packages/coding-agent/src/tools/context.ts
index e8e5d1560..69b25bb4d 100644
--- a/packages/coding-agent/src/tools/context.ts
+++ b/packages/coding-agent/src/tools/context.ts
@@ -13,6 +13,9 @@ declare module "@oh-my-pi/pi-agent-core" {
 		 *  wrapper must not re-prompt for the same action (explicit per-tool
 		 *  policies and overrides still apply). */
 		xdevApproved?: boolean;
+		/** Reports the approval tier resolved after an extension rewrites an
+		 *  xd:// device call, so dispatch metadata describes the input that ran. */
+		xdevTierResolved?(tier: "read" | "write" | "exec"): void;
 		/** Set only after an interactive prompt approves provider computer safety checks. */
 		providerSafetyApproved?: boolean;
 	}
diff --git a/packages/coding-agent/src/tools/xdev.ts b/packages/coding-agent/src/tools/xdev.ts
index 96a89c042..55a8f71bf 100644
--- a/packages/coding-agent/src/tools/xdev.ts
+++ b/packages/coding-agent/src/tools/xdev.ts
@@ -444,7 +444,15 @@ export async function dispatchXdevTool(
 					})
 			: undefined;
 		const executable = state.decorateExecution?.(canonical) ?? canonical;
-		const result = await executable.execute(toolCallId, validated as never, signal, innerOnUpdate, context);
+		const executionContext = context
+			? {
+					...context,
+					xdevTierResolved: (effectiveTier: ToolTier) => {
+						xdev = { ...xdev, tier: effectiveTier };
+					},
+				}
+			: undefined;
+		const result = await executable.execute(toolCallId, validated as never, signal, innerOnUpdate, executionContext);
 		return { result, xdev: { ...xdev, inner: result.details } };
 	} catch (error) {
 		if (
diff --git a/packages/coding-agent/test/extensions-runner.test.ts b/packages/coding-agent/test/extensions-runner.test.ts
index a8cdd8324..a078575d9 100644
--- a/packages/coding-agent/test/extensions-runner.test.ts
+++ b/packages/coding-agent/test/extensions-runner.test.ts
@@ -2542,6 +2542,50 @@ describe("ExtensionRunner", () => {
 			expect(fs.existsSync(recordPath)).toBe(false); // tool never executed
 		});
 
+		it("reports the effective tier after a tool_call handler revises xd:// input", async () => {
+			const recordPath = path.join(tempDir.path(), "xdev-effective-tier.jsonl");
+			const extCode = `
+				export default function(pi) {
+					pi.on("tool_call", async (event) => {
+						if (event.toolName !== "bash") return;
+						return { input: { command: "echo revised" } };
+					});
+				}
+			`;
+			fs.writeFileSync(path.join(extensionsDir, "tool-call-xdev-tier.ts"), extCode);
+
+			const result = await loadTestExtensions();
+			const runner = new ExtensionRunner(
+				result.extensions,
+				result.runtime,
+				tempDir.path(),
+				sessionManager,
+				modelRegistry,
+			);
+			const tool = createRecordingTool(recordPath);
+			tool.approval = args =>
+				args &&
+				typeof args === "object" &&
+				"command" in args &&
+				typeof args.command === "string" &&
+				args.command.includes("revised")
+					? "write"
+					: "read";
+			const wrapped = new ExtensionToolWrapper(tool, runner);
+			let effectiveTier: string | undefined;
+			const xdevContext = {
+				settings: { get: (key: string) => (key === "tools.approvalMode" ? "yolo" : {}) },
+				xdevApproved: true,
+				xdevTierResolved: (tier: string) => {
+					effectiveTier = tier;
+				},
+			} as never;
+
+			await wrapped.execute("xdev-tier-id", { command: "echo original" }, undefined, undefined, xdevContext);
+			expect(JSON.parse(fs.readFileSync(recordPath, "utf8"))).toEqual({ command: "echo revised" });
+			expect(effectiveTier).toBe("write");
+		});
+
 		it("emits tool_call before the approval prompt so approval sees the final input", async () => {
 			const order: string[] = [];
 			const extCode = `
diff --git a/packages/coding-agent/test/write-xdev-dispatch.test.ts b/packages/coding-agent/test/write-xdev-dispatch.test.ts
index b20dd232f..efbc6fe5f 100644
--- a/packages/coding-agent/test/write-xdev-dispatch.test.ts
+++ b/packages/coding-agent/test/write-xdev-dispatch.test.ts
@@ -131,6 +131,45 @@ describe("read and write route xd:// device URLs", () => {
 		expect(result.details?.xdev).toMatchObject({ tool: "peek", mode: "execute", tier: "read" });
 	});
 
+	it("records the effective tier reported after an execution decorator rewrites device args", async () => {
+		let executedQuery: string | undefined;
+		const device: AgentTool = {
+			name: "peek",
+			label: "Peek",
+			description: "Argument-dependent device",
+			parameters: type({ q: "string" }),
+			approval: args =>
+				args && typeof args === "object" && "q" in args && args.q === "mutate" ? "write" : "read",
+			async execute(_id, args) {
+				if (!args || typeof args !== "object" || !("q" in args) || typeof args.q !== "string") {
+					throw new Error("Expected a string query");
+				}
+				executedQuery = args.q;
+				return { content: [{ type: "text", text: "done" }] };
+			},
+		};
+		const xdev = createTestXdevState([device]);
+		xdev.decorateExecution = canonical => ({
+			...canonical,
+			async execute(id, _args, signal, onUpdate, context) {
+				const revised = { q: "mutate" };
+				context?.xdevTierResolved?.("write");
+				return canonical.execute(id, revised as never, signal, onUpdate, context);
+			},
+		});
+		const write = new WriteTool(xdevSession(process.cwd(), { xdev }));
+
+		const result = await write.execute(
+			"write-xdev-revised",
+			{ path: "xd://peek", content: JSON.stringify({ q: "inspect" }) },
+			undefined,
+			undefined,
+			{} as never,
+		);
+		expect(executedQuery).toBe("mutate");
+		expect(result.details?.xdev?.tier).toBe("write");
+	});
+
 	it("rejects near-miss xd addresses before filesystem fallback", async () => {
 		const tempDir = await fs.mkdtemp(path.join(os.tmpdir(), "write-xdev-near-miss-"));
 		try {