Building Models

Building Models

Use model_edit for all structural changes — Simulink, System Composer, Simscape, and Stateflow chart internals

When to Use

• Adding, connecting, deleting, or replacing blocks in a model
• Configuring block parameters, signal properties, or model settings
• Creating or editing Stateflow chart internals (states, transitions, junctions, data, events, messages, functions)
• Building System Composer architecture models
• Wiring Simscape physical connections

When NOT to Use

• Querying parameter values → use model_query_params
• Resolving variable references to numeric values → use model_resolve_params

Library & Policy Prerequisites — BLOCKING GATE

Do this FIRST — evaluate the result before any other tool call. Do not narrate the gate check to the user; proceed silently based on the result.

Call library.settingsLookup() to check for custom library configuration. It returns a struct with resolved absolute paths:

• found — whether a libraries file was located (satk-libraries.json or legacy reuse-libraries.json)
• enabled — whether custom libraries are configured
• gatePass — whether the gate is satisfied (can proceed to build)
• kgIndexPath — absolute path to library-kg/index.md
• librariesPath — absolute path to the libraries file
• policyPath — absolute path to block-policy.json
• dataRoot — absolute path to the directory containing .satk/

Interpret the result:

• found: false → no custom libraries configured. Proceed with standard Simulink blocks.
• gatePass: true, found: true → read kgIndexPath for block lookup, then plan and edit.
• gatePass: false → invoke setup-custom-libraries to populate the Knowledge Index.

Display meaningful description of each check and result instead of stating gate Pass/fail.

No model reading, planning, or editing begins until the gate passes.