> ## 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 10 05 ## Tag your measurements Measurements can carry free-form tags — "baseline", "rpt", "batch-7" — added the way you would in Notion: type to find one of the project's existing tags or create a new one. Tags match regardless of case and reuse the project's existing spelling. Click a tag chip in any measurement table to filter by it, and a second to narrow further; tag several measurements at once; and find measurements by tag in global search. The spec and instance pages gain the tag column and filter, plus a type filter. Through the API, measurements accept `tags` on create and `PATCH`, lists filter with `tags_all` / `tags_any`, `GET /cell_measurements/tags` lists the project's tags with usage counts, and `POST /cell_measurements/tags/bulk` adds and removes tags on up to 1000 measurements. ## Cell batches and CAD models * **Batches are records of their own.** A cell's manufacturing lot used to be a text field on each instance. It is now a batch belonging to a cell specification, with a name, notes, manufacture date and properties. Existing batch text has been converted into batches. Deleting a batch keeps its instances. **This changes the API:** cell instances replace `batch` with a writable `batch_id` and a read-only `batch_name`, and batches have their own endpoints under `/cell_specifications/{id}/cell_batches` and `/cell_batches/{id}`. * **Attach a CAD model to a cell specification** (`.step`, `.iges`, `.stl`, `.obj`, `.ply`, `.glb`, `.off`, up to 100 MB). A rendered thumbnail shows on the spec page and in the Cells table. ## Lab: utilization history and channel checks * **A Utilization history page** shows the cycler fleet over time as bars stacked by state (occupied, stale, free, out of service), from 30 days to 10 years, daily to annually, as a share or as a channel count. Open it from **History** under the utilization figure. * **Scheduling checks channel ratings.** The Schedule dialog shows the voltage and current range the protocol reaches, and flags any channel whose ratings it would exceed ("Draws 7.5 A, rated 5 A") or whose ratings are unknown. It warns but does not block. * **A test request shows what actually happened** once it starts: the channel and window it ran on, a link to the measurement it produced, actual against estimated duration, and live channel data while it runs. Schedule is now the first row action in the Test Scheduler. **Improvements** * **Simulate a protocol from its own page.** A **Simulate** button runs the saved protocol against a cell and model you choose, with its inputs prefilled and comma-separated values sweeping. **Full setup** opens the full form with the protocol preselected. * **Looping protocols no longer need a setting raised.** Max backward jumps now defaults to 1000 and has left the simulation forms; a simulation that exceeds it offers **Rerun with higher limit**. * **Cycles plots for every simulation**, not only Cycle Aging (EIS excepted). * **Auto-generated analyses open on a plot suited to their kind**: retention against cycle for cycling, capacity against C-rate for a rate test, resistance against SOC for a pulse sweep, charge and discharge capacity for formation. * **Rate-capability analyses record each step's start and end voltage**, so a step that began below the upper cutoff is visible as such rather than looking like poor rate capability. * **Analysis detection covers more test shapes.** Staircase charges and pulses logged in stages are read as one load, GITT and incremental-OCV titrations are found as pulse sections, capacity-capped rate tests keep their slow and fast steps, and a record that changes voltage window between tests (formation then rate tests, for example) reads each test against its own window. Stored analyses have been re-derived. * **Invite a member as Member or Admin.** The Members invite box has a role choice defaulting to Member; inviting someone who is already a member keeps their role. * **Faster time-series loading** for large measurements, which now fetch only the part of the file a plot needs. * **Deleting a study says its simulations are kept**, and how to delete them first if you want to. Study simulation counts stay current. * The project members panel says clearly when everyone in the organization is already on the project. * Simulation actions in study, model and protocol grids now show only when you can carry them out. * The Cells table gives the name column most of its width; measurement tables beside a details card no longer hide their toolbar on a laptop screen. **Fixes** * **Project Contributors can create pipelines.** Creating one failed for members whose organization role was Member. * **The protocol generator no longer puts cutoffs on its own safety limits.** A step ending on or past the protocol's safety limit is now an error, so a generated test no longer aborts in its first cycle. * **Older Data Fit and Validation results draw their plots again**, for jobs from before March 2026 that showed a legend and no plots. * **Adding a time-series plot to a simulation in a study loads it.** It could sit on "Loading variables" indefinitely. * **Comparing measurements keeps the Cycles tab** when both have cycle data. * **Table search is consistent as you type**: a whole word no longer returns more loosely related rows than a partial one. * **The specification-name filter on the Measurements list applies.** It showed the pill but kept every row. * A material's **Used by cell specifications** table no longer empties on scroll. * The optimizations list and the lab utilization plot fill the page height. **Improvements** * **`iwp.Parameter` is immutable.** The `set_*` methods are replaced by copies: `with_bounds`, `with_initial_value`, `with_fitting_scale`, `with_normalize`, `with_prior` and `with_initial_guess_distribution`. Assigning `p.bounds` or `p.initial_value` raises, naming the method to use instead. * **A half-cell `GITTModel` can start from `"Initial voltage [V]"`.** It used to fail, or, with a full-cell parameter set, start at the wrong voltage. **Fixes** * **Objective-level constraints are applied with every SciPy optimizer.** `ScipyMinimize` (all methods) and `ScipyShgo` silently ignored them. * The regularization docs now state that a penalty contributes `w * fun**2`, not `w * fun`, so `fun` should not be squared beforehand. **Improvements** * **Manage memberships from the SDK.** `client.organization` gains `members()`, `get_member()`, `invite()`, `set_role()`, `deactivate()`, `reactivate()`, `resend_invite()` and `remove()`; `client.project` gains `roles()`, `add_member()`, `invite_member()`, `update_member()` and `remove_member()`. Invites take a role and default to Member. * **`client.analysis.create(..., plots=[...])`** stores plot presets for an analysis, validated against its columns. * **The MCP server can run simulations**, with `run_simulation`, `run_simulation_batch` and `wait_for_simulations`. * **`POST /jobs` is retired** and returns `410 Gone` naming the endpoint to use instead: `/pipelines`, `/simulations/with-template/batch`, `/optimizations` or the ECM fit endpoints. **Fixes** * **A malformed id returns `400`**, not `500` — for example `client.job.cancel(None)`. * **NaN or Infinity in analysis metadata returns `400`** naming the offending key, instead of `500`. **Improvements** * **`generate_experiment` splits a CC-CV charge logged as one step** into a CC step and a CV step, so long cycling replays stay within the cell's voltage window. Pass `split_cc_cv=False` for the previous behaviour. * **Step typing works for sub-mA coin-cell data.** Rest and constant-current thresholds scale with the cell's rated capacity (pass `cell_spec`), or with the data's own current, instead of typing every step as Rest. * **Unparseable numbers warn.** Values like `"N/A"` in voltage or current columns are reported with the column and examples rather than silently becoming null. * **Step labels and groups are removed.** `iwdata.steps.label_*` and `validate` are gone, steps no longer carry `Label` / `Group number`, and the `gitt_to_ocp` transform is removed (use `rest_to_ocp`). **Fixes** * **Neware BTSDA flat CSVs** map `Cycle Index` / `Step Index`, so cycles no longer collapse into one, and capacity and energy columns read as floats. * The empty-column warning from Excel readers is silenced. **Improvements** * **`run-pipelines` replaces `run-simple-pipelines`**, steering fits to regular pipelines so they appear in the web app. * **`run-simulations`** covers running simulations through the MCP server. * **`discover-api`** lists the new membership methods; **`manage-cells`** documents analysis plot presets, measurement tags and cell batches; **`process-data`** documents passing a cell spec for coin-cell step typing. 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