> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ionworks.com/llms.txt
> Use this file to discover all available pages before exploring further.

# 2026 03 23

<Update label="March 23, 2026" description="Protocols section, job cancellation, parameterized durations, and optimization management">
  ## Dedicated Protocols section with parameterized input support

  Studio now has a dedicated Protocols section where you can browse, edit, and clone saved experiment
  templates. Each protocol detail page shows the source YAML, a tabbed UCP/human-readable preview, and
  automatically detected input parameters with a generated `parameters_schema`. This makes it easy to
  build reusable, parameterized protocols and simulate them with different input values.

  [Find out more →](/simulate/protocols)

  ## Cancel running jobs from Studio

  You can now cancel pipelines, optimizations, and simulations directly from the UI. Each detail page
  shows a cancel button for in-progress jobs, with optimistic status updates and automatic rollback if
  the cancellation fails. On the backend, cancelling a parent job cascades to all child jobs.

  ## Protocol termination conditions and parameterized durations

  Protocol simulations now support early termination based on variable conditions — useful for ending
  long protocols (e.g. multi-cycle Arbin tests) after a target number of cycles. Duration and
  termination end conditions also accept `input['...']` references, enabling fully parameterized
  experiments such as eVTOL design optimization with variable cruise duration.

  [Find out more →](/simulate/simulating-commercial-protocols#termination-conditions-ends)

  ## Edit and delete optimizations

  Optimization name and description are now editable from the detail page, and you can delete
  optimizations with a confirmation dialog. The experiment-step validation toggle is also exposed as a
  per-objective setting, letting you control whether each objective validates against experiment steps.

  <AccordionGroup>
    <Accordion title="Studio">
      **Improvements**

      * Added cancel buttons for running pipelines, optimizations, and simulations with cascading
        cancellation.
      * Added optimization editing (name and description) and delete with permission checks.
      * Exposed the validate-against-experiment-steps toggle on each optimization objective.
      * Unified table UI across optimizations, protocols, and pipelines — actions behind three-dot menus,
        clickable row names, no more "Actions" column header.
      * Added more plot variables to the protocol simulator results view.
      * Design parameters and experiment conditions are now preserved when rerunning simulations, and
        columns for differing parameters default to visible.

      **Fixes**

      * Fixed 500 error when simulating non-UTF-8 protocol files (e.g. BioLogic `.mps`).
      * Fixed optimization detail page layout issues.
    </Accordion>

    <Accordion title="Pipeline">
      **Improvements**

      * Added support for `input['...']` parameter references in protocol duration and termination end
        conditions.
    </Accordion>

    <Accordion title="Protocol Simulator">
      **Improvements**

      * Added a way to end protocol simulations early when a variable condition is met.
      * Added support for Python-style list repetition (`["step"] * N`) in PyBaMM experiment strings.
      * Added support for cycle-index-based branching in Arbin protocol parsing.

      **Fixes**

      * Fixed decoding of non-UTF-8 protocol files in the standalone simulator.
    </Accordion>

    <Accordion title="Python API">
      **Improvements**

      * Large request payloads (>512 KB) are now compressed automatically, reducing upload sizes
        significantly (e.g. 24.5 MB to 3.7 MB for typical serialized models).
      * Job status fields now use typed enums instead of raw strings.
    </Accordion>
  </AccordionGroup>
</Update>