Create a Compute2 workflow

The user wants a PipelineConfiguration — a Datagrok Compute2 workflow that wires multiple scripts together with reactive data links, validators, and metadata handlers.

The authoritative reference lives in the docs. This skill is a working procedure; when you need to know what something is or how a field behaves, read the docs.

Reading order

Read these before you write any configuration:

• help/compute/workflows/overview.mdx — terms (node, link, controller, action, FuncCall, nqName, RichFunctionView).
• help/compute/workflows/configuration.mdx — every field of PipelineConfiguration, the workflow types, states, custom exports, and the constraints / review checklist (consult the section before publishing).
• help/compute/workflows/link-types.mdx — link/action types, controller methods, handler signatures.

Read on demand:

• help/compute/workflows/links-spec.mdx — Link Query Language grammar. Needed only when the workflow uses tag selectors, template queries, or relative (base / @base) refs.
• help/compute/workflows/examples.mdx — Wine Quality walkthrough end-to-end.
• help/compute/workflows/code-usage.mdx — only if the workflow will be launched programmatically.

Reference examples (also linked from examples.mdx):

File	Use when
examples/minimal-static.ts	Fixed sequence of scripts, no links, user fills inputs manually.
examples/dynamic-with-links.ts	User can add/remove steps; outputs propagate to all downstream instances.
examples/validators-and-meta.ts	Cross-field validation, conditional input visibility, user-triggered actions.

Setup (install + dayjs/timezone imports) is covered in examples.mdx#dependencies.

Instructions

Phase 1: Understand the requirements

1. Ask the user:

   • What scripts (Datagrok functions) should the workflow connect?
   • What data flows between them? (which outputs feed which inputs)
   • Is the set of steps fixed (static) or user-configurable (dynamic)?
   • Are there validation rules? (required fields, value ranges, cross-field checks)
   • Should any inputs be visually customized? (hidden, readonly, dropdowns)

2. Verify that every referenced script exists. A script may be deployed, scaffolded locally but not yet published, or only an idea in the user's head. Check each location and stop searching once you find a match:

   • Deployed on the server: grok s functions list --filter "<nqName>". A non-empty result means the script is live and the nqName is correct.
   • Local package.ts: grep for //name:\s*<FunctionName> in src/package.ts (and any src/package-*.ts entries). Each annotated export becomes a function with nqName: <PackageName>:<FunctionName> once published.
   • Local scripts/ directory: grep for ^#name:\s*<scriptName> in scripts/**/*.{py,r,js,jl,m,sql}. Each #name-annotated file becomes a function with nqName: <PackageName>:<scriptName> once published.

   If a script is found locally but not on the server, note it as "scaffolded — will be published with this workflow". If a script is missing in all three places, ask the user whether to scaffold it (and follow the appropriate skill: see /init or the scripting docs) or to drop it from the workflow.

3. Present a plain-language summary of the workflow for approval before coding. Mark each step as deployed, scaffolded, or to be created so the user can see the integration surface at a glance.

Phase 2: Design the configuration

1. Choose the workflow type. See configuration.mdx for the discriminated union of static / dynamic / action / ref.
2. Sketch the PipelineConfiguration object: steps with id and nqName; data links with from/to; validators and meta links if needed; actions for user-triggered operations.
3. If any link uses tag selectors, template queries, or relative references, consult links-spec.mdx.
4. Present the configuration skeleton for approval. Do not implement handlers yet.

Phase 3: Implement

1. Create the provider function in the package:

   import type {PipelineConfiguration} from '@datagrok-libraries/compute-api';
   
   //name: MyWorkflow
   //description: Description of the workflow
   //tags: model
   //editor: Compute2:TreeWizardEditor
   //input: object params
   //output: object result
   export function myWorkflow(): PipelineConfiguration {
     return {
       id: 'my-workflow',
       nqName: 'MyPackage:MyWorkflow',
       version: '1.0',
       /* approved configuration */
     };
   }
   

2. Implement link handlers using the controller methods documented in link-types.mdx.
3. Register the function in package.ts if not already there.
4. Run grok api to regenerate wrappers.

Phase 4: Review

Validate the configuration against the constraints and review checklist. Spawn a sub-agent for an independent pass if the configuration is non-trivial. Fix anything that fails before proceeding.

Phase 5: Build and verify

1. grok check --soft — verify function signatures.
2. webpack or npm run build — build the package.
3. grok publish --release — --release is mandatory; debug-mode packages are only visible to the publishing user.
4. Tell the user where to open the workflow: Apps → Compute → ModelHub.

Behavior

• Do not invent scripts. Only reference functions that exist on the server or in the package.
• Present config for approval before writing handler code. Handlers are the expensive part.
• Use simple LQL paths unless the user needs dynamic matching. Prefer in1:step1/a over complex selectors.
• Keep handlers pure. Handlers should transform data, not perform side effects. Use actions for user-triggered operations.
• One data link per script input. Each input of a downstream node should receive data from at most one data link. Use validators or meta links for additional concerns.
• Import from @datagrok-libraries/compute-api. This is the public API. Do not import from @datagrok-libraries/compute-utils directly — those are internal paths.
• Always publish with --release.
• Use the /ui skill only in two cases: (1) an action needs to show custom inputs inline (e.g. a confirmation form with extra fields), or (2) a script's output viewer needs tweaks applied through its DG.Viewer JS API inside a viewersHook. Workflow scaffolding, links, validators, and meta-driven UI changes do not need /ui.