%% Agentic operations workflow: request journey and team handoffs. Generated.
sequenceDiagram
  autonumber
  actor n_requester as Requester
  participant n_portal as Request portal
  participant n_api as Request API
  participant n_workflow as Durable orchestration
  participant n_coordinator as Coordinator agent
  participant n_tasks as Task queue
  participant n_specialists as Specialist agents
  participant n_gateway as Model gateway
  participant n_model as Reasoning models
  participant n_tools as Tool gateway (MCP)
  participant n_sandbox as Analysis sandbox
  participant n_run_ledger as Run ledger
  participant n_approver as Approver
  participant n_erp as ERP and supplier systems
  participant n_evals as Coordination evals
  participant n_traces as Run traces
  Note over n_requester: Frame the request
  n_requester->>n_portal: Need and constraints
  n_portal->>n_api: Validated intake
  n_api-->>n_workflow: Start run with budget
  Note over n_workflow: Plan and assign
  n_workflow-->>n_coordinator: Plan step
  n_coordinator-->>n_tasks: Sub-tasks with dedup keys
  n_tasks-->>n_specialists: Dispatch
  Note over n_specialists: Specialists work in parallel
  n_specialists->>n_gateway: Calls within budget slice
  n_gateway->>n_model: Model call
  n_specialists->>n_tools: Catalog, policy, quote requests
  n_specialists->>n_sandbox: Generated cost model
  n_specialists->>n_run_ledger: Findings with evidence
  Note over n_workflow: Resolve disagreement, then ask
  n_workflow-->>n_approver: Approval request with merged findings
  Note over n_approver: Decide, then act once
  n_approver-->>n_workflow: Decision resumes run
  n_tools->>n_erp: Order create with idempotency key
  Note over n_evals: Prove the team earns its cost
  n_evals-->>n_api: A2 versus A4 replay
  n_gateway-->>n_traces: Spend per agent