Cellar vs Agent Droid Bridge — MCP Server Comparison | AllMCPs
Side-by-Side Model Context Protocol Comparison
Cellar vs Agent Droid Bridge
In-depth architectural comparison of the Cellar and Agent Droid Bridge MCP servers. Compare execution transports, security boundaries, tool capabilities, quality scores, and ready-to-paste client installation snippets for Claude, Cursor, Windsurf, and VS Code.
At a Glance & Executive Verdict
Cellar
OS Automation · Local stdio
Quality: 47/100 (Fair) | Auth: No auth required
Agent Droid Bridge
OS Automation · Local stdio
Quality: 60/100 (Good) | Auth: No auth required
Verdict Summary: Choose Cellar if you need specialized OS Automation tools running via a local process. Choose Agent Droid Bridge if your workspace requires OS Automation integration with local subprocess execution. Both servers can be configured concurrently in your client's mcpServers manifest.
Which MCP Server Should You Choose?
Choose Cellar when:
You need dedicated capabilities in the OS Automation domain.
You prefer local stdio subprocess transport architecture.
Your security boundary fits: No auth required (Free / Open Source).
Primary tools included: ContextElement and ContextSnapshot modeling and merging, Memory trait with session, scope, and write hook support, Local SQLite and vector search memory backend.
Hybrid computer-use runtime. Fuses accessibility tree + Chrome DevTools Protocol + vision into structured context with per-element confidence. 4 MCP tools (see/act/think/perceive). Continuous awareness engine (Cortex) with freshness + side-effect detection. Works offline with Ollama + local models.
MCP server giving AI agents programmatic control over Android devices and emulators via ADB. 11 tools covering UI inspection, screen interaction, ADB commands, and change detection.
Category & Scope
Tools & Capabilities Breakdown
Cellar Tools (6)
ContextElement and ContextSnapshot modeling and merging
Memory trait with session, scope, and write hook support
Local SQLite and vector search memory backend
Brief assembly with budgeting, governance, and receipts
Action, planning, and execution receipt schemas
LLM summarizers supporting Anthropic and Ollama models
Agent Droid Bridge Tools (14)
Ready-to-Paste Client Configurations
Paste either (or both) of these JSON server blocks into your client config file (e.g. claude_desktop_config.json or ~/.cursor/mcp.json).
Cellar is categorized under OS Automation and uses a local stdio subprocess. In contrast, Agent Droid Bridge belongs to OS Automation using local stdio subprocess. Select Cellar when you need capabilities focused on os automation and Agent Droid Bridge when you require tools for os automation.
Returns the current Android screen as an XML UI hierarchy.
Use this when you need to locate element coordinates, read text, or find resource IDs to
interact with. Do not call this after every action — only call it when you actually need to
read screen content. To check if the screen changed after an action, use snapshot_ui before
the action and detect_ui_change after.
tap_screen
A tap gesture at the given pixel coordinates on the Android screen.
swipe_screen
A swipe gesture on the Android screen from (x1,y1) to (x2,y2) over the given duration.
type_text
Text input into the currently focused Android input field.
Spaces are encoded automatically.
press_key
A key event sent to the Android device using the given keycode integer.
take_screenshot
A PNG screenshot of the current Android device screen with width, height,
and base64-encoded image data.
list_devices
All Android devices currently visible to ADB, with their serial numbers,
connection state, and model names.
launch_app
An Android app launched by its component name (package/activity).
execute_adb_command
The output of an ADB command. Parsed safely via shlex and never passed to a system shell.
snapshot_ui
Takes a lightweight snapshot of the current UI state and returns a short token.
Use this before performing an action (tap, swipe, launch, key press) when you only need to
confirm the screen changed afterward — not read its content. Pass the returned token to
detect_ui_change as baseline_token. This avoids loading the full XML hierarchy into context
unnecessarily. Do not use this when you need to read or interact with screen elements — use
get_ui_hierarchy for that.
detect_ui_change
Polls the UI hierarchy after an action and returns when the screen content changes or the
timeout is reached. Returns changed status and elapsed time. By default, omits the XML
hierarchy for efficiency — set return_hierarchy=True to receive the full hierarchy.
For efficient change detection: call snapshot_ui before the action, perform the action, then
call detect_ui_change with baseline_token. Only use without baseline_token when you need to
wait for a slow transition (loading screens, animations). Do not use to read the current
screen state — use get_ui_hierarchy for that.
get_screen_elements
Structured list of UI elements currently visible on the Android screen.
Returns elements filtered and shaped by the chosen mode. Prefer 'tappable' for
navigation and 'interactive' when you need XPath or bounds for ADB commands.
Only use 'all' as a last resort — it returns every node and can be large.