zevOS

01Ebook

Building on a Charging API

Integration patterns for operators with engineering teams

21 pagesPDF, with worked integration patternsUpdated 4 July 2026

What you get

Takeaways

  • Why every webhook handler must be idempotent, with the failure it prevents
  • Pushing sessions into an ERP without a nightly reconciliation job
  • Joining charging data to telematics for cost per kilometre
  • What to build against the API rather than wait for on a roadmap

Contents

  1. 01

    The shape of a charging API

    Resources, pagination, idempotency keys and why the console being a client of the same API matters to you.

  2. 02

    Webhooks and duplicates

    At-least-once delivery guarantees a duplicate eventually. Design the handler for it, or bill a driver twice.

  3. 03

    ERP and finance

    Session-completed events into a revenue schema, and monthly reconciliation against the settlement export.

  4. 04

    Fleet and telematics

    Mapping tags to vehicles and joining energy to distance, which is the whole point for a fleet.

  5. 05

    Warehouse and reporting

    Bulk export patterns for teams who want their charging data alongside everything else.

  6. 06

    Provisioning at scale

    Creating stations, connectors, tariffs and QR codes programmatically as part of commissioning.

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