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BusbySim

Busby Ventures Limited v1.0.0

SysML v2 models

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Developer declarations; not independently tested. Listing last checked Nov 4, 2026. Package observed Nov 3, 2026.

Not specified in the available declarations: capabilities, limitations, pricing & account requirements.

Onboarding example

Draft a SysML v2 model of a delivery drone, validate its syntax with BusbySim, and show me the diagram.

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Description

From the marketplace listing

Turn a potential idea into a SysML v2 model you can see and develop, right in ChatGPT. Describe a system, such as an aircraft architecture, a drone or an EV powertrain. ChatGPT drafts the SysML v2 model using BusbySim's syntax guide, then BusbySim validates the syntax. ChatGPT corrects any errors it reports until the model is valid. BusbySim then shows the model in its editor and diagram inside the chat. There you can pan, zoom and edit the SysML, and the diagram updates as you type. You can also work entirely in the diagram, using the right click to add, delete or edit elements. To keep working on your model, open it in BusbySim as a project. You sign in or create a free account first. Within BusbySim you can link requirements, complete functional analysis, or output FHA, FMEA, fault trees and safety reports. No login is needed in ChatGPT, and the plugin can't see your saved BusbySim projects. The syntax check covers the BusbySim specific subset of SysML v2 syntax only. It doesn't check what the model means or prove the design is safe.

Language: English · Automatically detected from descriptions.

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What changed

Files & skills

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Plugin package3 files · 1.72 KBBrowse files →
Skill instructions
sysml-modeling1.07 KB

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---
name: sysml-modeling
description: Draft, revise, validate, or show a SysML v2 model with the BusbySim MCP tools. Use for a request about SysML v2 syntax or a BusbySim diagram.
---

# SysML v2 modeling with BusbySim

1. Before drafting SysML v2 in this conversation, call `get_sysml_syntax_guide` and follow the supported syntax in its result.
2. Draft a complete model. Preserve the user's design intent and existing model content when revising it. Keep the text within the tool's 50,000-character input limit.
3. Call `validate_sysml_model` with the complete text. Repair every reported syntax error and repeat until `valid` is true. Explain any remaining error if a valid model cannot be produced.
4. If the user wants to see or explore the model, call `render_sysml_model` only after successful validation. Show the diagram and the returned BusbySim link when useful.
5. Describe validation accurately: the parser checks syntax, not undefined references, engineering meaning, safety, or certification. The public tools cannot read, modify, or delete a user's saved BusbySim projects.
Package details

Publisher declarations from the archived package. These are separate from our research and the live service's terms.

Package author
Busby Ventures Limited

Package observed Nov 3, 2026.

.codex-plugin/plugin.json
Technical details
First seen
Oct 24, 2026 · 12:40 UTC
Last seen
Nov 4, 2026 · 06:00 UTC
Collection status
Collected

plugin_asdk_app_6ab8e8334a788191bf9381f5a75ef4ab

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