diff --git a/acp_adapter/tools.py b/acp_adapter/tools.py
index 3c0aa3727..8fc9eacf0 100644
--- a/acp_adapter/tools.py
+++ b/acp_adapter/tools.py
@@ -57,16 +57,24 @@ TOOL_KIND_MAP: Dict[str, ToolKind] = {
 
 
 _POLISHED_TOOLS = {
-    "todo",
-    "read_file",
-    "search_files",
-    "execute_code",
-    "skill_view",
-    "skills_list",
-    "skill_manage",
-    "terminal",
-    "web_search",
-    "web_extract",
+    # Core operator loop
+    "todo", "memory", "session_search", "delegate_task",
+    # Files / execution
+    "read_file", "write_file", "patch", "search_files", "terminal", "process", "execute_code",
+    # Skills / web / browser / media
+    "skill_view", "skills_list", "skill_manage", "web_search", "web_extract",
+    "browser_navigate", "browser_click", "browser_type", "browser_press", "browser_scroll",
+    "browser_back", "browser_snapshot", "browser_console", "browser_get_images", "browser_vision",
+    "vision_analyze", "image_generate", "text_to_speech",
+    # Schedulers / platform integrations
+    "cronjob", "send_message", "clarify", "discord", "discord_admin",
+    "ha_list_entities", "ha_get_state", "ha_list_services", "ha_call_service",
+    "feishu_doc_read", "feishu_drive_list_comments", "feishu_drive_list_comment_replies",
+    "feishu_drive_reply_comment", "feishu_drive_add_comment",
+    "kanban_create", "kanban_show", "kanban_comment", "kanban_complete",
+    "kanban_block", "kanban_link", "kanban_heartbeat",
+    "yb_query_group_info", "yb_query_group_members", "yb_search_sticker",
+    "yb_send_dm", "yb_send_sticker", "mixture_of_agents",
 }
 
 
@@ -104,11 +112,25 @@ def build_tool_title(tool_name: str, args: Dict[str, Any]) -> str:
         if urls:
             return f"extract: {urls[0]}" + (f" (+{len(urls)-1})" if len(urls) > 1 else "")
         return "web extract"
+    if tool_name == "process":
+        action = str(args.get("action") or "").strip() or "manage"
+        sid = str(args.get("session_id") or "").strip()
+        return f"process {action}: {sid}" if sid else f"process {action}"
     if tool_name == "delegate_task":
+        tasks = args.get("tasks")
+        if isinstance(tasks, list) and tasks:
+            return f"delegate batch ({len(tasks)} tasks)"
         goal = args.get("goal", "")
         if goal and len(goal) > 60:
             goal = goal[:57] + "..."
         return f"delegate: {goal}" if goal else "delegate task"
+    if tool_name == "session_search":
+        query = str(args.get("query") or "").strip()
+        return f"session search: {query}" if query else "recent sessions"
+    if tool_name == "memory":
+        action = str(args.get("action") or "manage").strip() or "manage"
+        target = str(args.get("target") or "memory").strip() or "memory"
+        return f"memory {action}: {target}"
     if tool_name == "execute_code":
         code = str(args.get("code") or "").strip()
         first_line = next((line.strip() for line in code.splitlines() if line.strip()), "")
@@ -138,8 +160,23 @@ def build_tool_title(tool_name: str, args: Dict[str, Any]) -> str:
         if len(target) > 64:
             target = target[:61] + "..."
         return f"skill {action}: {target}"
+    if tool_name == "browser_navigate":
+        return f"navigate: {args.get('url', '?')}"
+    if tool_name == "browser_snapshot":
+        return "browser snapshot"
+    if tool_name == "browser_vision":
+        return f"browser vision: {str(args.get('question', '?'))[:50]}"
+    if tool_name == "browser_get_images":
+        return "browser images"
     if tool_name == "vision_analyze":
-        return f"analyze image: {args.get('question', '?')[:50]}"
+        return f"analyze image: {str(args.get('question', '?'))[:50]}"
+    if tool_name == "image_generate":
+        prompt = str(args.get("prompt") or args.get("description") or "").strip()
+        return f"generate image: {prompt[:50]}" if prompt else "generate image"
+    if tool_name == "cronjob":
+        action = str(args.get("action") or "manage").strip() or "manage"
+        job_id = str(args.get("job_id") or args.get("id") or "").strip()
+        return f"cron {action}: {job_id}" if job_id else f"cron {action}"
     return tool_name
 
 
@@ -377,6 +414,301 @@ def _format_web_search_result(result: Optional[str]) -> Optional[str]:
     return _truncate_text("\n".join(lines))
 
 
+def _format_web_extract_result(result: Optional[str]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return None
+    if data.get("success") is False and data.get("error"):
+        return f"Web extract failed: {data.get('error')}"
+    results = data.get("results")
+    if not isinstance(results, list):
+        return None
+    lines = [f"Web extract: {len(results)} URL{'s' if len(results) != 1 else ''}"]
+    for item in results[:5]:
+        if not isinstance(item, dict):
+            continue
+        url = str(item.get("url") or "").strip()
+        title = str(item.get("title") or url or "Untitled").strip()
+        error = str(item.get("error") or "").strip()
+        content = str(item.get("content") or "").strip()
+        lines.extend(["", f"### {title}"])
+        if url:
+            lines.append(url)
+        if error and error not in {"None", "null"}:
+            lines.append(f"Error: {error}")
+            continue
+        if content:
+            headings = _extract_markdown_headings(content, limit=5)
+            lines.append(f"Content: {len(content):,} chars")
+            if headings:
+                lines.append("Headings: " + "; ".join(headings))
+            excerpt = _truncate_text(content, limit=1200)
+            lines.extend(["", excerpt])
+        else:
+            lines.append("No content returned.")
+    if len(results) > 5:
+        lines.append(f"\n... {len(results) - 5} more result(s) omitted")
+    return _truncate_text("\n".join(lines), limit=7000)
+
+
+def _format_process_result(result: Optional[str], args: Optional[Dict[str, Any]]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return result if isinstance(result, str) and result.strip() else None
+    if data.get("success") is False and data.get("error"):
+        return f"Process error: {data.get('error')}"
+    action = str((args or {}).get("action") or "process").strip() or "process"
+    if isinstance(data.get("processes"), list):
+        processes = data["processes"]
+        lines = [f"Processes: {len(processes)}"]
+        for proc in processes[:20]:
+            if not isinstance(proc, dict):
+                lines.append(f"- {proc}")
+                continue
+            sid = str(proc.get("session_id") or proc.get("id") or "?")
+            status = str(proc.get("status") or ("exited" if proc.get("exited") else "running"))
+            cmd = str(proc.get("command") or "").strip()
+            pid = proc.get("pid")
+            code = proc.get("exit_code")
+            bits = [status]
+            if pid is not None:
+                bits.append(f"pid {pid}")
+            if code is not None:
+                bits.append(f"exit {code}")
+            lines.append(f"- `{sid}` — {', '.join(bits)}" + (f" — {cmd[:120]}" if cmd else ""))
+        if len(processes) > 20:
+            lines.append(f"... {len(processes) - 20} more process(es)")
+        return "\n".join(lines)
+
+    status = str(data.get("status") or data.get("state") or action).strip()
+    sid = str(data.get("session_id") or (args or {}).get("session_id") or "").strip()
+    lines = [f"Process {action}: {status}" + (f" (`{sid}`)" if sid else "")]
+    for key, label in (("command", "Command"), ("pid", "PID"), ("exit_code", "Exit code"), ("returncode", "Exit code"), ("lines", "Lines")):
+        if data.get(key) is not None:
+            lines.append(f"- **{label}:** {data.get(key)}")
+    output = data.get("output") or data.get("new_output") or data.get("log") or data.get("stdout")
+    error = data.get("error") or data.get("stderr")
+    if output:
+        lines.extend(["", "Output:", _truncate_text(str(output), limit=5000)])
+    if error:
+        lines.extend(["", "Error:", _truncate_text(str(error), limit=2000)])
+    msg = data.get("message")
+    if msg and not output and not error:
+        lines.append(str(msg))
+    return _truncate_text("\n".join(lines), limit=7000)
+
+
+def _format_delegate_result(result: Optional[str]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return None
+    if data.get("error") and not isinstance(data.get("results"), list):
+        return f"Delegation failed: {data.get('error')}"
+    results = data.get("results")
+    if not isinstance(results, list):
+        return None
+    total = data.get("total_duration_seconds")
+    lines = [f"Delegation results: {len(results)} task{'s' if len(results) != 1 else ''}" + (f" in {total}s" if total is not None else "")]
+    icon = {"completed": "✅", "failed": "✗", "error": "✗", "timeout": "⏱", "interrupted": "⚠"}
+    for item in results:
+        if not isinstance(item, dict):
+            lines.append(f"- {item}")
+            continue
+        idx = item.get("task_index")
+        status = str(item.get("status") or "unknown")
+        model = item.get("model")
+        dur = item.get("duration_seconds")
+        role = item.get("_child_role")
+        header = f"{icon.get(status, '•')} Task {idx + 1 if isinstance(idx, int) else '?'}: {status}"
+        bits = []
+        if model:
+            bits.append(str(model))
+        if role:
+            bits.append(f"role={role}")
+        if dur is not None:
+            bits.append(f"{dur}s")
+        if bits:
+            header += " (" + ", ".join(bits) + ")"
+        lines.extend(["", header])
+        summary = str(item.get("summary") or "").strip()
+        error = str(item.get("error") or "").strip()
+        if summary:
+            lines.append(_truncate_text(summary, limit=1200))
+        if error:
+            lines.append("Error: " + _truncate_text(error, limit=800))
+        trace = item.get("tool_trace")
+        if isinstance(trace, list) and trace:
+            names = [str(t.get("tool") or "?") for t in trace if isinstance(t, dict)]
+            if names:
+                lines.append("Tools: " + ", ".join(names[:12]) + (f" (+{len(names)-12})" if len(names) > 12 else ""))
+    return _truncate_text("\n".join(lines), limit=8000)
+
+
+def _format_session_search_result(result: Optional[str]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return None
+    if data.get("success") is False:
+        return f"Session search failed: {data.get('error', 'unknown error')}"
+    results = data.get("results")
+    if not isinstance(results, list):
+        return None
+    mode = data.get("mode") or "search"
+    query = data.get("query")
+    lines = ["Recent sessions" if mode == "recent" else f"Session search results" + (f" for `{query}`" if query else "")]
+    if not results:
+        lines.append(str(data.get("message") or "No matching sessions found."))
+        return "\n".join(lines)
+    for item in results:
+        if not isinstance(item, dict):
+            continue
+        sid = str(item.get("session_id") or "?")
+        title = str(item.get("title") or item.get("when") or "Untitled session").strip()
+        when = str(item.get("last_active") or item.get("started_at") or item.get("when") or "").strip()
+        count = item.get("message_count")
+        source = str(item.get("source") or "").strip()
+        meta = ", ".join(str(x) for x in [when, source, f"{count} msgs" if count is not None else ""] if x)
+        lines.append(f"- **{title}** (`{sid}`)" + (f" — {meta}" if meta else ""))
+        summary = str(item.get("summary") or item.get("preview") or "").strip()
+        if summary:
+            lines.append("  " + _truncate_text(" ".join(summary.split()), limit=500))
+    return _truncate_text("\n".join(lines), limit=7000)
+
+
+def _format_memory_result(result: Optional[str], args: Optional[Dict[str, Any]]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return None
+    action = str((args or {}).get("action") or "memory").strip() or "memory"
+    target = str(data.get("target") or (args or {}).get("target") or "memory")
+    if data.get("success") is False:
+        lines = [f"✗ Memory {action} failed ({target})", str(data.get("error") or "unknown error")]
+        matches = data.get("matches")
+        if isinstance(matches, list) and matches:
+            lines.append("Matches:")
+            lines.extend(f"- {_truncate_text(str(m), 160)}" for m in matches[:5])
+        return "\n".join(lines)
+    lines = [f"✅ Memory {action} saved ({target})"]
+    if data.get("message"):
+        lines.append(str(data.get("message")))
+    if data.get("entry_count") is not None:
+        lines.append(f"Entries: {data.get('entry_count')}")
+    if data.get("usage"):
+        lines.append(f"Usage: {data.get('usage')}")
+    # Avoid dumping all memory entries into ACP UI; show only the explicit new value preview.
+    preview = str((args or {}).get("content") or (args or {}).get("old_text") or "").strip()
+    if preview:
+        lines.append("Preview: " + _truncate_text(preview, limit=300))
+    return "\n".join(lines)
+
+
+def _format_edit_result(tool_name: str, result: Optional[str], args: Optional[Dict[str, Any]]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    path = str((args or {}).get("path") or "file").strip()
+    if isinstance(data, dict):
+        if data.get("success") is False or data.get("error"):
+            return f"{tool_name} failed for {path}: {data.get('error', 'unknown error')}"
+        message = str(data.get("message") or "").strip()
+        replacements = data.get("replacements") or data.get("replacement_count")
+        lines = [f"✅ {tool_name} completed" + (f" for `{path}`" if path else "")]
+        if message:
+            lines.append(message)
+        if replacements is not None:
+            lines.append(f"Replacements: {replacements}")
+        if data.get("files_modified"):
+            files = data.get("files_modified")
+            if isinstance(files, list):
+                lines.append("Files: " + ", ".join(f"`{f}`" for f in files[:8]))
+        return "\n".join(lines)
+    if isinstance(result, str) and result.strip():
+        return _truncate_text(result, limit=3000)
+    return f"✅ {tool_name} completed" + (f" for `{path}`" if path else "")
+
+
+def _format_browser_result(tool_name: str, result: Optional[str], args: Optional[Dict[str, Any]]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return result if isinstance(result, str) and result.strip() else None
+    if data.get("success") is False or data.get("error"):
+        return f"{tool_name} failed: {data.get('error', 'unknown error')}"
+    if tool_name == "browser_get_images":
+        images = data.get("images") or data.get("data")
+        if isinstance(images, list):
+            lines = [f"Images found: {len(images)}"]
+            for img in images[:12]:
+                if isinstance(img, dict):
+                    alt = str(img.get("alt") or "").strip()
+                    url = str(img.get("url") or img.get("src") or "").strip()
+                    lines.append(f"- {alt or 'image'}" + (f" — {url}" if url else ""))
+            return _truncate_text("\n".join(lines), limit=5000)
+    title = str(data.get("title") or data.get("url") or data.get("status") or tool_name)
+    text = str(data.get("text") or data.get("content") or data.get("snapshot") or data.get("analysis") or data.get("message") or "").strip()
+    lines = [title]
+    if data.get("url") and data.get("url") != title:
+        lines.append(str(data.get("url")))
+    if text:
+        lines.extend(["", _truncate_text(text, limit=5000)])
+    return _truncate_text("\n".join(lines), limit=7000)
+
+
+def _format_media_or_cron_result(tool_name: str, result: Optional[str]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, dict):
+        return result if isinstance(result, str) and result.strip() else None
+    if data.get("success") is False or data.get("error"):
+        return f"{tool_name} failed: {data.get('error', 'unknown error')}"
+    lines = [f"✅ {tool_name} completed"]
+    for key in ("file_path", "path", "url", "image_url", "job_id", "id", "status", "message", "next_run"):
+        if data.get(key):
+            lines.append(f"- **{key}:** {data.get(key)}")
+    return "\n".join(lines)
+
+
+def _format_generic_structured_result(tool_name: str, result: Optional[str]) -> Optional[str]:
+    data = _json_loads_maybe(result)
+    if not isinstance(data, (dict, list)):
+        return result if isinstance(result, str) and result.strip() else None
+    if isinstance(data, list):
+        lines = [f"{tool_name}: {len(data)} item{'s' if len(data) != 1 else ''}"]
+        for item in data[:12]:
+            lines.append(f"- {_truncate_text(str(item), limit=240)}")
+        return _truncate_text("\n".join(lines), limit=5000)
+
+    if data.get("success") is False or data.get("error"):
+        return f"{tool_name} failed: {data.get('error', 'unknown error')}"
+
+    lines = [f"✅ {tool_name} completed" if data.get("success") is True else f"{tool_name} result"]
+    priority_keys = (
+        "message", "status", "id", "task_id", "issue_id", "title", "name", "entity_id",
+        "state", "service", "url", "path", "file_path", "count", "total", "next_run",
+    )
+    seen = set()
+    for key in priority_keys:
+        value = data.get(key)
+        if value in (None, "", [], {}):
+            continue
+        seen.add(key)
+        lines.append(f"- **{key}:** {_truncate_text(str(value), limit=500)}")
+
+    for key, value in data.items():
+        if key in seen or key in {"success", "raw", "content", "entries"}:
+            continue
+        if value in (None, "", [], {}):
+            continue
+        if isinstance(value, (dict, list)):
+            preview = json.dumps(value, ensure_ascii=False, default=str)
+        else:
+            preview = str(value)
+        lines.append(f"- **{key}:** {_truncate_text(preview, limit=500)}")
+        if len(lines) >= 14:
+            break
+
+    content = data.get("content")
+    if isinstance(content, str) and content.strip():
+        lines.extend(["", _truncate_text(content.strip(), limit=1500)])
+    return _truncate_text("\n".join(lines), limit=7000)
+
+
 def _build_polished_completion_content(
     tool_name: str,
     result: Optional[str],
@@ -385,12 +717,28 @@ def _build_polished_completion_content(
     formatter = {
         "todo": lambda: _format_todo_result(result),
         "read_file": lambda: _format_read_file_result(result, function_args),
+        "write_file": lambda: _format_edit_result(tool_name, result, function_args),
+        "patch": lambda: _format_edit_result(tool_name, result, function_args),
         "search_files": lambda: _format_search_files_result(result),
         "execute_code": lambda: _format_execute_code_result(result),
+        "process": lambda: _format_process_result(result, function_args),
+        "delegate_task": lambda: _format_delegate_result(result),
+        "session_search": lambda: _format_session_search_result(result),
+        "memory": lambda: _format_memory_result(result, function_args),
         "skill_view": lambda: _format_skill_view_result(result),
         "skill_manage": lambda: _format_skill_manage_result(result, function_args),
         "web_search": lambda: _format_web_search_result(result),
+        "web_extract": lambda: _format_web_extract_result(result),
+        "browser_navigate": lambda: _format_browser_result(tool_name, result, function_args),
+        "browser_snapshot": lambda: _format_browser_result(tool_name, result, function_args),
+        "browser_vision": lambda: _format_browser_result(tool_name, result, function_args),
+        "browser_get_images": lambda: _format_browser_result(tool_name, result, function_args),
+        "vision_analyze": lambda: _format_media_or_cron_result(tool_name, result),
+        "image_generate": lambda: _format_media_or_cron_result(tool_name, result),
+        "cronjob": lambda: _format_media_or_cron_result(tool_name, result),
     }.get(tool_name)
+    if formatter is None and tool_name in _POLISHED_TOOLS:
+        formatter = lambda: _format_generic_structured_result(tool_name, result)
     if formatter is None:
         return None
     text = formatter()
@@ -594,7 +942,6 @@ def build_tool_start(
             content = _build_patch_mode_content(patch_text)
         return acp.start_tool_call(
             tool_call_id, title, kind=kind, content=content, locations=locations,
-            raw_input=arguments,
         )
 
     if tool_name == "write_file":
@@ -603,7 +950,6 @@ def build_tool_start(
         content = [acp.tool_diff_content(path=path, new_text=file_content)]
         return acp.start_tool_call(
             tool_call_id, title, kind=kind, content=content, locations=locations,
-            raw_input=arguments,
         )
 
     if tool_name == "terminal":
@@ -712,6 +1058,74 @@ def build_tool_start(
             tool_call_id, title, kind=kind, content=content, locations=locations,
         )
 
+    if tool_name == "web_extract":
+        urls = arguments.get("urls") if isinstance(arguments.get("urls"), list) else []
+        preview = "\n".join(f"- {url}" for url in urls[:5]) or "Extracting web content"
+        content = [_text("Extracting content from:\n" + preview if urls else preview)]
+        return acp.start_tool_call(
+            tool_call_id, title, kind=kind, content=content, locations=locations,
+        )
+
+    if tool_name == "process":
+        action = str(arguments.get("action") or "").strip() or "manage"
+        sid = str(arguments.get("session_id") or "").strip()
+        data_preview = str(arguments.get("data") or "").strip()
+        text = f"Process action: {action}" + (f"\nSession: {sid}" if sid else "")
+        if data_preview:
+            text += "\nInput: " + _truncate_text(data_preview, limit=500)
+        content = [_text(text)]
+        return acp.start_tool_call(
+            tool_call_id, title, kind=kind, content=content, locations=locations,
+        )
+
+    if tool_name == "delegate_task":
+        tasks = arguments.get("tasks")
+        if isinstance(tasks, list) and tasks:
+            lines = [f"Delegating {len(tasks)} tasks", ""]
+            for i, task in enumerate(tasks[:8], 1):
+                if isinstance(task, dict):
+                    goal = str(task.get("goal") or "").strip()
+                    role = str(task.get("role") or "").strip()
+                    lines.append(f"{i}. " + _truncate_text(goal, limit=160) + (f" ({role})" if role else ""))
+            if len(tasks) > 8:
+                lines.append(f"... {len(tasks) - 8} more")
+            content = [_text("\n".join(lines))]
+        else:
+            goal = str(arguments.get("goal") or "").strip()
+            content = [_text("Delegating task" + (f":\n{_truncate_text(goal, limit=800)}" if goal else ""))]
+        return acp.start_tool_call(
+            tool_call_id, title, kind=kind, content=content, locations=locations,
+        )
+
+    if tool_name == "session_search":
+        query = str(arguments.get("query") or "").strip()
+        content = [_text(f"Searching past sessions for: {query}" if query else "Loading recent sessions")]
+        return acp.start_tool_call(
+            tool_call_id, title, kind=kind, content=content, locations=locations,
+        )
+
+    if tool_name == "memory":
+        action = str(arguments.get("action") or "manage").strip() or "manage"
+        target = str(arguments.get("target") or "memory").strip() or "memory"
+        preview = str(arguments.get("content") or arguments.get("old_text") or "").strip()
+        text = f"Memory {action} ({target})"
+        if preview:
+            text += "\nPreview: " + _truncate_text(preview, limit=500)
+        content = [_text(text)]
+        return acp.start_tool_call(
+            tool_call_id, title, kind=kind, content=content, locations=locations,
+        )
+
+    if tool_name in _POLISHED_TOOLS:
+        try:
+            args_text = json.dumps(arguments, indent=2, default=str)
+        except (TypeError, ValueError):
+            args_text = str(arguments)
+        content = [_text(_truncate_text(args_text, limit=1200))]
+        return acp.start_tool_call(
+            tool_call_id, title, kind=kind, content=content, locations=locations,
+        )
+
     # Generic fallback
     import json
     try:
@@ -721,7 +1135,7 @@ def build_tool_start(
     content = [acp.tool_content(acp.text_block(args_text))]
     return acp.start_tool_call(
         tool_call_id, title, kind=kind, content=content, locations=locations,
-        raw_input=arguments,
+        raw_input=None if tool_name in _POLISHED_TOOLS else arguments,
     )
 
 
diff --git a/tests/acp/test_tools.py b/tests/acp/test_tools.py
index fa576b614..40423174a 100644
--- a/tests/acp/test_tools.py
+++ b/tests/acp/test_tools.py
@@ -353,6 +353,70 @@ class TestBuildToolComplete:
         assert "Results truncated" in text
         assert result.raw_output is None
 
+    def test_build_tool_complete_for_process_list_formats_table(self):
+        result = build_tool_complete(
+            "tc-process",
+            "process",
+            '{"processes":[{"session_id":"p1","status":"running","pid":123,"command":"npm run dev"}]}',
+            function_args={"action":"list"},
+        )
+        text = result.content[0].content.text
+        assert "Processes: 1" in text
+        assert "`p1`" in text
+        assert "npm run dev" in text
+        assert result.raw_output is None
+
+    def test_build_tool_complete_for_delegate_task_summarizes_children(self):
+        result = build_tool_complete(
+            "tc-delegate",
+            "delegate_task",
+            '{"results":[{"task_index":0,"status":"completed","summary":"Reviewed ACP rendering.","model":"gpt-5.5","duration_seconds":3.2,"tool_trace":[{"tool":"read_file"}]}],"total_duration_seconds":3.4}',
+        )
+        text = result.content[0].content.text
+        assert "Delegation results: 1 task" in text
+        assert "Reviewed ACP rendering" in text
+        assert "gpt-5.5" in text
+        assert "Tools: read_file" in text
+        assert result.raw_output is None
+
+    def test_build_tool_complete_for_session_search_recent(self):
+        result = build_tool_complete(
+            "tc-session",
+            "session_search",
+            '{"success":true,"mode":"recent","results":[{"session_id":"s1","title":"ACP work","last_active":"2026-05-02","message_count":12,"preview":"Polished tool rendering."}],"count":1}',
+        )
+        text = result.content[0].content.text
+        assert "Recent sessions" in text
+        assert "ACP work" in text
+        assert "Polished tool rendering" in text
+        assert result.raw_output is None
+
+    def test_build_tool_complete_for_memory_avoids_dumping_entries(self):
+        result = build_tool_complete(
+            "tc-memory",
+            "memory",
+            '{"success":true,"target":"user","entries":["private long memory"],"usage":"1% — 19/2000 chars","entry_count":1,"message":"Entry added."}',
+            function_args={"action":"add","target":"user","content":"User likes concise ACP rendering."},
+        )
+        text = result.content[0].content.text
+        assert "Memory add saved" in text
+        assert "User likes concise ACP rendering" in text
+        assert "private long memory" not in text
+        assert result.raw_output is None
+
+    def test_build_tool_complete_for_web_extract_summarizes_urls(self):
+        result = build_tool_complete(
+            "tc-web-extract",
+            "web_extract",
+            '{"results":[{"url":"https://example.com","title":"Example","content":"# Intro\\nThis is extracted content."}]}',
+        )
+        text = result.content[0].content.text
+        assert "Web extract: 1 URL" in text
+        assert "Example" in text
+        assert "Content:" in text
+        assert "Intro" in text
+        assert result.raw_output is None
+
     def test_build_tool_complete_truncates_large_output(self):
         """Very large outputs should be truncated."""
         big_output = "x" * 10000