Decision page

Delivery exception triage stack for Logistics

What should a logistics team use to classify delivery exceptions and route the next action?

ZBS editorial starting point. Start with AfterShip Tracking API for normalized events, Claude API for bounded classification and LangGraph for policy-based routing.

Exceptions are assigned faster while shipment state stays anchored in a live tracking system.

Editorial starting point

Event-driven exception triage

A concrete starting configuration that keeps source facts, model output and operational authority separate.

Choose this when: The operation spans multiple carriers and needs auditable escalation.

Events AfterShip Tracking API observed

Supply shipment checkpoints and exception states. The official API documents carrier-normalized tracking records, updates and webhooks.

Limit: Carrier coverage, plan access, rate limits and event quality require direct checking.

Evidence: source 1
Classification Claude API observed

Map events to the approved taxonomy. The external API is a practical bounded reasoning layer with documented behavior.

Limit: The model must not replace source-of-truth data, deterministic policy or human authority.

Evidence: source 1
Routing LangGraph observed

Apply policy and human escalation. Stateful workflow steps keep model output separate from acceptance and operational action.

Limit: Policy, persistence, access control and recovery remain application responsibilities.

Evidence: source 1

Private / local

Controlled reasoning path

Keep parsing, retrieval or model inference in controlled infrastructure while retaining the same source-of-truth and approval rules.

Choose this when: Sensitive inputs cannot be sent to an external model API and the team can operate the additional infrastructure.

Events AfterShip Tracking API source backed inference

Supply external carrier facts. The official API documents carrier-normalized tracking records, updates and webhooks.

Limit: Carrier coverage, plan access, rate limits and event quality require direct checking.

Evidence: source 1
Classification vLLM source backed inference

Serve a local classifier. It provides a documented self-operated model-serving layer.

Limit: Serving a model does not prove its task accuracy, safe tool use or secure operation.

Evidence: source 1
Routing LangGraph source backed inference

Run deterministic escalation. Stateful workflow steps keep model output separate from acceptance and operational action.

Limit: Policy, persistence, access control and recovery remain application responsibilities.

Evidence: source 1

Budget alternative

Lower-cost external model path

Keep the workflow and source integration explicit while evaluating a lower-cost model candidate on the same acceptance set.

Choose this when: External processing is acceptable and measured model spend is a leading constraint.

Events AfterShip Tracking API source backed inference

Keep the event input fixed. The official API documents carrier-normalized tracking records, updates and webhooks.

Limit: Carrier coverage, plan access, rate limits and event quality require direct checking.

Evidence: source 1
Classification DeepSeek API source backed inference

Produce candidate exception labels. It is a concrete lower-cost external model candidate for the same acceptance set.

Limit: Price alone is not task fitness; output structure, languages, availability and data terms need testing.

Evidence: source 1
Routing LangGraph source backed inference

Apply the same policy. Stateful workflow steps keep model output separate from acceptance and operational action.

Limit: Policy, persistence, access control and recovery remain application responsibilities.

Evidence: source 1

Community check

Do you agree with this starting stack?

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How the stack fits together

Delivery exception triage workflow for Logistics, showing the primary stack components in order. — ZBS Index functional diagram generated from the cited stack revision; no third-party interface or private data is reproduced. Source, captured 2026-08-14.

Trade-offs that change the choice

Constraint	Primary	Private / local	Budget
Data boundary	The named managed APIs receive only the fields explicitly sent to them	Reasoning stays controlled; source systems may remain external	Lower cost does not make external processing private
Operational load	Lower: managed components with explicit integration points	Highest: serving, retrieval and recovery are yours	Moderate: custom workflow plus external APIs
Decision authority	Risky writes and low-confidence cases require a deterministic or human gate	The same gate is required regardless of hosting	Lower model price does not relax the approval rule

Implementation path

1. Define categories, owners and forbidden actions.

2. Replay historical events without changing shipments.

3. Review label disagreements and severe exceptions.

4. Measure wrong routing, missed severity and time to owner.

Known limits

Carrier events can be late, incomplete or wrong.

The model cannot promise dates or compensation.

No product on this page is a universal winner; the configuration still needs a task-specific acceptance test.

EU and US routes stay consolidated with Global until evidence changes the answer.

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