When to Keep It One Agent
A single agent is the right choice when the process fits these conditions:- One coherent AOP. All steps belong to one logical flow that a single person would carry out end-to-end.
- One primary operator persona. The human approval steps all go to the same role — a single agent handles its own exceptions.
- One integration cluster. The required connections belong to the same system or domain (for example, all Gmail + Google Sheets, or all Salesforce + Slack).
- Short end-to-end latency. The work completes in under five minutes with no waiting stages that could block downstream work.
When to Split — and Which Seam to Use
Three conditions consistently warrant splitting into multiple agents:- Different personas handle different stages. If the first stage requires a procurement manager to approve and the second stage requires a finance analyst to validate, keep the stages in separate agents so each persona manages their own exceptions.
- Different SLAs. High-priority intake should not be slowed down waiting for a batch of low-priority items to clear. Splitting lets each agent run on its own schedule.
- Reusable subroutines. If five agents all need to “look up a customer record and validate their account status,” extract that step into one specialist agent that the others can hand to.
Three Canonical Patterns
Pattern 1: Pipeline (A → B → C)
Each agent adds context and passes the result to the next stage. Use the Queue producer/consumer seam. When it fits:- Intake, enrichment, and action are conceptually distinct stages
- Each stage has its own AOP author and approval chain
- Stages run at different speeds (intake is fast; enrichment is slow)
- The stages are so tightly coupled that they share state in ways the queue data model can’t represent cleanly
- Total end-to-end latency matters more than separation of concerns
Stage A — the producer
Runs on a trigger (email, webhook, schedule). Its AOP extracts the raw data and adds a case to the queue with the structured fields Stage B needs.
Stage B — the first consumer
Picks up Pending cases, enriches them, and adds enriched cases to a second queue for Stage C.
Stage C — the final consumer
Takes the enriched data and performs the write action (update the ERP, send the email, post the Slack message).
Pattern 2: Fan-Out (A → N parallel B’s)
One agent identifies a batch of items and hands each one to a consumer that processes them in parallel. When it fits:- A large batch arrives on a schedule (end-of-day, end-of-week) and each item can be processed independently
- The items share the same AOP but contain different data
- Throughput matters — sequential processing would take too long
- Items within a batch depend on each other (process item 1 before item 2)
- The write destination has strict rate limits and parallel consumers would breach them
Producer agent
Runs on a schedule or trigger. Queries the source system (database, spreadsheet, API), identifies all items to process, and adds one case per item to the queue.
Consumer agent
Has the case trigger enabled with concurrency set to the appropriate parallel limit. Each case runs its own Run independently.
Capacity planning: The queue’s statistics bar shows Pending, In Progress, and Failed counts. If Pending grows faster than In Progress clears, add a second consumer agent — or contact Duvo to raise the queue’s parallel limit above the platform default.
Pattern 3: Escalation (A handles routine, hands to B for exceptions)
One agent covers the standard path. When a case falls outside the standard, it hands off to a specialist agent rather than failing or requesting a generic HITL. When it fits:- A large volume of cases follow a predictable pattern but a small percentage require specialist judgment
- The specialist agent has access to different connections or a different AOP
- You want clean separation between routine volume and exception handling
- The majority of cases are exceptions — this pattern breaks down if the “routine” path is not actually routine
- The specialist agent and the routine agent are maintained by the same person — in that case, a single agent with HITL is simpler
Triage agent
Processes all incoming cases. For routine cases, completes the action directly. For exceptions, requests a handover to the specialist agent.
Specialist agent
Configured as an allowed handover target. Its AOP handles the narrow class of edge cases the triage agent escalates.
Lineage and Traceability
When a source event travels through two or three agents, you need to be able to follow it from end to end. Two practices make this reliable:Passing a correlation ID
Include a unique identifier for the originating event in every case you add to the queue. Use the same field name across all stages.Reading the case timeline
When a case passes through multiple agents via Handover, the case detail view shows the full timeline: which agent handled each stage, when it started, and what it did. Open a case in your queue and scroll to the timeline to see the complete processing history. For runs in the Runs list, the run output for each stage includes the case ID so you can link stages together.Anti-Patterns
Worked Example: Complaint Triage
This example shows how to take a Clarity-generated process and split it across three agents.The Clarity output
A Clarity session captured the following steps for handling inbound customer complaints:- Read the incoming email
- Classify: Billing, Technical, or Escalation
- For Billing: look up account, issue credit if under $200, else forward to billing team
- For Technical: create a support ticket, assign to on-call engineer
- For Escalation: forward to account manager with a summary
The decomposition decision
The wiring
- Triage consumes from the “Customer Complaints” queue (case trigger enabled).
- Triage uses Agent Handover to route to @Billing Specialist or @Account Manager Briefing when the case falls outside its path.
- Billing Specialist and Account Manager Briefing are each configured with “Queue (Consumer)” so they appear as valid handover targets.
Lineage
Each case in the “Customer Complaints” queue carriesdata.source_email_id from the originating Gmail message. When a case passes through Handover to the Billing Specialist, the case timeline shows both stages. The Billing Specialist’s AOP includes the original email ID in any CRM record it creates, so the audit trail runs from inbox to CRM record.
Related
Queue
Producer/consumer setup, case triggers, and concurrency
Agent Handover
Configuring handover targets in the AOP
Designing Human-in-the-Loop Workflows
Where to place approval gates within each agent in a multi-stage process
Guardrails for High-Risk Automations
Risk classification applies per agent, not per pipeline
Retries, Failures, and Skipped Steps
How individual run failures propagate through multi-agent flows
Playbooks — Complaint Triage
A full end-to-end example using the escalation pattern