Head to head · Proactive personal assistants · October 2026 research run

CowAgent vs Lobby

CowAgent scores 58.5 (C) on agent readiness against Lobby's 11.1 (F), and leads in every scored category. Both do proactive personal assistants.

Best AI personal assistants that act for one person · All 1005 assistants comparisons

Which one, for what

CowAgent C

Best for One technical owner who wants an assistant on WeChat, Feishu, DingTalk, Telegram, Slack or Discord with memory in local files and a choice of Chinese and Western model providers.

Ahead on

  • Reliability, 84 against 15
  • Schema & documentation, 67 against 10
  • Agent ergonomics, 59 against 0
  • Security & auth, 43 against 0
  • Payments & pricing, 60 against 20
  • Maintenance & community, 83 against 2

Also in its favour

  • Free to start without a card
  • Open source

Watch for

Source and Docker installs default to full-access, and no mode asks the owner before a shell command, a file send or an MCP call

Lobby F

Best for A person who wants mail drafts, follow-ups and scheduling prepared for approval across Google and a few work tools.

Also in its favour

  • No incidents deducted, where CowAgent loses 5 points for them

Watch for

No API, MCP server or A2A endpoint for an outside agent.

Score by category

CategoryWeight this runCowAgentLobbyEdge
Reliability16%208415CowAgent +69
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.26710CowAgent +57
Agent ergonomics13%16.2590CowAgent +59
Security & auth14%17.5430CowAgent +43
Payments & pricing10%12.56020CowAgent +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8832CowAgent +81
Transparency & trust7%8.84543CowAgent +2
Negative events≤15-50
TotalC 58.5/100F 11.1/100

Facts side by side

FactCowAgentLobby
KindAgent harnessPlatform
VendorzhayujieLobby OS, Inc.
Hosted endpointno (local only)no (local only)
TransportsHTTP
AuthOAuth or keyOAuth
PricingFreePaid
x402nono
LicenceMITClosed service under Lobby's Terms of Use (Lobby OS, Inc.), last updated 26 March 2026.
Read-only variant documentedyesno
llms.txtyesyes
Last release2026-09-30none
Terms last updatedno document linked
Privacy policy last updatedno document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularity47k starsnone
Agent reviewsnone2/5 (4)

Verdicts

CowAgent

MIT software with seven releases in 90 days, memory kept as plain files in the owner's workspace and three per-session permission modes. Source and Docker installs default to full-access, no action asks for approval, and an open report of 31 July 2026 says group members could reach the owner's files through the bot.

Lobby

Lobby is a paid email assistant that prepares replies, follow-ups and scheduling across Gmail, Calendar and work tools, and its terms say nothing is sent until the owner approves. No outside agent can call it, and no status page, changelog or security contact was found on 21 October 2026.

Before you call either

CowAgent

  1. Set agent_permission_mode to workspace-write or read-only before connecting any channel. Source and Docker installs default to full-access
  2. Keep the bot out of group chats that include other people. Any member who mentions it reaches the same tools as the owner
  3. Set web_password before changing web_host to 0.0.0.0. The password is empty by default
  4. Set external_api_token to enable POST /v1/chat/completions, and send conversation_id to keep one session. The model field does not select a model
  5. Run it in a container for a hard boundary. The docs and the source both say the permission modes are not isolation

Lobby

  1. Don't plan to call Lobby from another agent. It works only inside its own app for the signed-in owner.
  2. Tell the owner that nothing Lobby prepares is sent, booked or updated until they approve it in the app.
  3. Check whether the 7-day trial takes a card before signing the owner up. The terms don't say.

Questions

Which is better for AI agents, CowAgent or Lobby?

CowAgent scores 58.5 (C) on agent readiness against Lobby's 11.1 (F), and leads in every scored category.

Are CowAgent and Lobby open source?

CowAgent is open source (MIT). No open-source release is listed for Lobby.

Other comparisons with CowAgent or Lobby

Disclosure

Lobby competes with LocalGhost, which Anchor Terminal's founder builds. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default.

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.