diff --git a/plugin/web/server.ts b/plugin/web/server.ts
index 45f4776..7af7e53 100644
--- a/plugin/web/server.ts
+++ b/plugin/web/server.ts
@@ -596,14 +596,47 @@ export function createBridgeServer(config: BridgeServerConfig): http.Server {
           return;
         }
 
-        const execFn = (toolInstance as { execute: (id: string, args: unknown) => Promise<{ content?: Array<{ type: string; text?: string }> }> }).execute;
-        const toolResult = await execFn(randomUUID(), toolArgs);
+        const execFn = (toolInstance as { execute: (id: string, args: unknown) => Promise<unknown> }).execute;
+        const toolResultRaw = await execFn(randomUUID(), toolArgs);
 
-        // Extract text content from AgentToolResult
-        const text = (toolResult.content ?? [])
-          .filter((c) => c.type === "text" && c.text)
-          .map((c) => c.text as string)
-          .join("\n");
+        // Normalize the result shape. OpenClaw plugins return one of:
+        //   (a) AgentToolResult — { content: [{type:'text', text:'...'}, ...] }
+        //       used by tools that wrap via asContent() (e.g. all
+        //       Dialectic.OpenclawPlugin tools).
+        //   (b) raw JSON-able object — { ok:true, ...domain fields }
+        //       used by tools that return data directly (e.g. every
+        //       Fabric.OpenclawPlugin tool: fabric-channel-list,
+        //       fabric-guild-list, fabric-send-message, etc).
+        //   (c) null / undefined — fire-and-forget (rare).
+        //
+        // Pre-2026-05-24 the bridge ONLY handled shape (a); shape (b)
+        // silently returned "(no result)" to Claude Code (bug:
+        // fabric-channel-list and friends were unusable from contractor
+        // agents even though the tool actually ran successfully).
+        let text = "";
+        if (toolResultRaw == null) {
+          text = "";
+        } else if (
+          typeof toolResultRaw === "object" &&
+          Array.isArray((toolResultRaw as { content?: unknown }).content)
+        ) {
+          // Shape (a)
+          const content = (toolResultRaw as { content: Array<{ type: string; text?: string }> }).content;
+          text = content
+            .filter((c) => c.type === "text" && c.text)
+            .map((c) => c.text as string)
+            .join("\n");
+        } else if (typeof toolResultRaw === "string") {
+          text = toolResultRaw;
+        } else {
+          // Shape (b) — serialize the whole object as JSON. Claude Code
+          // is happy to parse JSON tool results.
+          try {
+            text = JSON.stringify(toolResultRaw);
+          } catch {
+            text = String(toolResultRaw);
+          }
+        }
 
         sendJson(res, 200, { result: text || "(no result)" });
       } catch (err) {