What is ty-sysblock-diagram-modeling?

A skill for creating, editing, repairing, arranging, checking, and verifying Sysplorer Sysblock diagrams. A Sysblock diagram represents system behavior with connected blocks, parameters, ports, feedback, or state-machine charts.

Use it for block-diagram construction and edits, subsystems, connections, parameters, feedback, layout repair, StateMachine Charts, simulation, and delivery checks.

It provides a controlled way to change model structure and layout through official Sysplorer interfaces, then save, reload, and audit the result.

ty-sysblock-diagram-modeling — Skill for Codex by Suzhou-Tongyuan

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

Any agent

npx skills add Suzhou-Tongyuan/sysplorer-mcp-server --skill ty-sysblock-diagram-modeling

Clone the repo

git clone --depth 1 https://github.com/Suzhou-Tongyuan/sysplorer-mcp-server

Made for: Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

README.md

[![agentmods](https://agentmods.dev/badge/skills/suzhou-tongyuan/sysplorer-mcp-server/ty-sysblock-diagram-modeling/github.svg)](https://agentmods.dev/skills/suzhou-tongyuan/sysplorer-mcp-server/ty-sysblock-diagram-modeling)

Your own site

<a href="https://agentmods.dev/skills/suzhou-tongyuan/sysplorer-mcp-server/ty-sysblock-diagram-modeling"><img src="https://agentmods.dev/badge/skills/suzhou-tongyuan/sysplorer-mcp-server/ty-sysblock-diagram-modeling/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

Your own site · 80×15

<a href="https://agentmods.dev/skills/suzhou-tongyuan/sysplorer-mcp-server/ty-sysblock-diagram-modeling"><img src="https://agentmods.dev/badge/skills/suzhou-tongyuan/sysplorer-mcp-server/ty-sysblock-diagram-modeling.svg" alt="Reviewed on agentmods" width="80" height="20"></a>

Per session 134 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.

When invoked 1,440 The whole file, excluding the scripts and references it only reads on demand.

Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.

Origin original No closer match found in the catalogue.

Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

Model	Per session	Once invoked
Fable 5.1	$0.00134	$0.01440
Opus 5.5	$0.00054	$0.00576
Sonnet 5.5	$0.00027	$0.00288
Haiku 4.5	$0.00013	$0.00144

Measured 19d ago against content hash e218395d4df7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

ty-sysblock-diagram-modeling scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 19d ago.

The scan reads SKILL.md. This mod also ships 10 executable files (scripts/api_contract_resolver.py, scripts/audit_layout_input.py, scripts/audit_sysblock_layout.py, …), listed below but not scanned — reading those needs a real analyzer, not pattern matching.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

resources/modeling_skills/ty-sysblock-diagram-modeling/SKILL.md · 72 lines

How it starts

The opening of the file, as written. The whole thing — 72 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Sysblock Block Diagram Modeling

Use this skill directly for ordinary Sysblock construction and editing. Concrete existing-model failures are led by ty-sysblock-model-debugging, which reuses this skill's applicable API, layout, save/reload, and audit constraints. When loaded as those constraints, stay in the debugger; do not reroute or restart its baseline. Construction-stage failures retain the original task context. Build and edit topology through official Sysplorer APIs; never write or patch Sysblock .mo topology text.

Core workflow

Classify the task as parameter-only, topology, layout, StateMachine, repair, audit-only, or delivery.
Freeze controller boundary, semantics, ports, types, dimensions, units, sample time, and required verification.
Resolve only the APIs the task will call with scripts/api_contract_resolver.py. Known contracts require zero probes. For an unknown API, query its exact documentation once; treat ok=true with empty help_text as unresolved and use the targeted stdout/signature fallback in references/runtime-contracts.md. Probe one unresolved behavior once in a disposable task-owned model. Never probe on the target model or enumerate the full API by default.
For topology/layout changes, create a coordinate-free sysblock-layout-input/v1 and run scripts/layout_input_tool.py prepare|audit. Plan before model mutation with scripts/layout_plan_tool.py block|statechart; use block --mode preconnect when RouteLine will run after connection. Read references/layout-workflow.md.
Create components, configure variable ports, connect with ConnectPort, check every API return, and stop dependent work on failure. Use RouteLine only after placement is stable; read back nontrivial explicit routes.
Save with the lifecycle sequence in references/runtime-contracts.md. Reopen/force-reload the exact saved target before final evidence collection.
Execute every check, test, translation, simulation, layout review, and delivery action required by the parent modeling rules.
Run scripts/audit_sysblock_model.py on the final saved model and raw structured evidence. Exit code 0 confirms only this Sysblock evidence audit; claim completion only after all parent-required validation succeeds.

Read the full file on GitHub · 72 lines

Files

What ships with it

25 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

19d ago First seen · 72 lines · 134 tokens per session scan A e218395d4df7

Subscribe to this mod's changes

ty-sysblock-diagram-modeling is a skill published in the GitHub repository Suzhou-Tongyuan/sysplorer-mcp-server (10 stars, last pushed 20d ago), licensed MIT. It adds 134 tokens to every session and 1,440 once invoked, about $0.0005 per session on Opus 5.5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-10-13.

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