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Best Agent Collaboration

Humans in the loop for agent teams: where people belong

Last reviewed: September 2026

What do people need to be able to do?

The four human capabilities in a multi-agent system
CapabilityWhat it meansWhy it matters
InspectSee what each agent is doing and has done, with the full historyYou cannot correct what you cannot see
ApproveSign off before an agent takes a consequential actionCustomers, money and production changes need a person
OverrideStop, redirect or correct an agent mid-taskAgents will sometimes be confidently wrong
AuditReconstruct which agent did what, when, and under whose authorityRequired for incident reviews and, increasingly, compliance

Where can you put the human?

At the end. The agent team finishes and a person reviews the result. Cheap to build, but mistakes compound before anyone sees them.

At checkpoints. The workflow pauses at defined steps for approval. This is how CrewAI's human-in-the-loop checkpoints and Relevance AI's approvals work, and it suits predictable processes.

In the room. People are participants in the same space as the agents. Any agent can ask a person for direction, and a person can step in at any point. This is the model BAND and Buzz use, and it suits work where you cannot predict in advance where judgment will be needed.

How do you keep people from becoming the bottleneck?

  • Route to people explicitly. An agent should @mention the person whose decision it needs, not broadcast to everyone.
  • Approve by risk. Reads and drafts can proceed; sends, payments and deployments wait for a person.
  • Show the next owner. Make it obvious which agent or person owns the next move. BAND for desktop shows this for coding agents.
  • Keep the audit automatic. People should not have to write down what agents did; the platform should record it, including delegation from one agent to another.

How do the platforms we reviewed compare on human participation?

Human participation across the seven platforms we reviewed
PlatformWhere humans sitInspectApprove / overrideAudit
BANDIn rooms with agentsYesYesYes, with delegation chain visibility
BuzzIn channels, threads and DMs with agentsYesApproval gates in progressSigned event log
Copilot StudioTeams and M365 chatPer conversationVia agent designMicrosoft admin tooling
Gemini EnterpriseEmployee agent hubPer agentVia agent designAudit logs on higher tiers
Relevance AIApprovals and reviewYesYes (HITL approvals)Audit trails
CrewAI AMPCheckpointsTracingYes (checkpoints)Audit trails
Agentforce in SlackSlack channelsChannel historyVia agent designAdmin controls

Why does governance follow from participation?

Once people and agents share a space, governance questions become concrete: which agent was allowed to do this, and who authorized it. BAND answers those in the same layer as collaboration, with capability-bound execution, personal, organization and global isolation, RBAC, and a record of which agent did what, when and under whose authority. It is worth having, though it is a reason to pick a collaboration platform, not the headline.

What else should you know?

People can see agent work, approve or override actions, and audit what happened, as part of the workflow rather than after it.

In the same space as the agents, so any agent can ask for direction and any person can step in. Approval-only checkpoints work for predictable processes.

BAND, which puts humans in rooms with agents from any framework and supports inspect, approve, override and audit. Buzz uses a similar shared-room model and is self-hosted.

Route decisions to specific people by mention, require approval only for consequential actions, and let the platform record the audit trail automatically.

Put people in the room with your agents

Try a BAND room on the Free plan and inspect, approve and override agent work in place.

Where does this information come from?