Borrowing it
Nothing to install: this file belongs to Utopia-V/mixagents. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.
curl -O https://raw.githubusercontent.com/Utopia-V/mixagents/main/.agents/skills/design-agent-systems/SKILL.mdgit clone --depth 1 https://github.com/Utopia-V/mixagentsWrote 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.
[](https://agentmods.dev/skills/utopia-v/mixagents/design-agent-systems)<a href="https://agentmods.dev/skills/utopia-v/mixagents/design-agent-systems"><img src="https://agentmods.dev/badge/skills/utopia-v/mixagents/design-agent-systems.svg" alt="Measured on agentmods" height="20"></a>- NVIDIA SkillSpector pass
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 | $0.00046 | $0.00209 |
| Opus 5 | $0.00023 | $0.00105 |
| Sonnet 5 | $0.00009 | $0.00042 |
| Haiku 4.5 | $0.00005 | $0.00021 |
Grade A, and why
design-agent-systems 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 2d ago.
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.
What it actually says
Design Agent Systems
当产品确实依赖模型形成判断或动作时，区分三个行为 owner：Model 形成候选判断与动作；Harness 构造观察、调用工具并维护运行状态；Environment 拥有事实、副作用与成功条件。
把状态、权限、恢复和验证放在实际拥有其语义的层。Prompt 不能成为环境事实的 owner，工具 schema 不能自行授予信任，summary 与索引不能替代长期权威，局部 eval 也不能替代产品父结果。
Broker 的 context、长期状态、工具、MCP、权限或持久副作用设计需要具体检查时，读取 context-and-tools.md。
What ships with it
2 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.
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.
- 2d ago First seen · 14 lines · 46 tokens per session scan A 9146dd82c525
design-agent-systems is a skill published in the GitHub repository Utopia-V/mixagents (188 stars, last pushed 3d ago), licensed MIT. It adds 46 tokens to every session and 209 once invoked, about $0.0002 per session on Opus 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 2026-09-05.
Other skills, from other repositories
shortfilm-prompt
A five-part method for writing prompts for AI-generated videos, such as Sora or Seedance. It organizes each prompt into the subject, setting, visual style, camera movement, and timed shots with sound.
ao-workflow-runner
A workflow engine that reads YAML files and runs tasks assigned to different named roles. YAML is a text format for describing structured settings and steps.
subagent-driven-development
Execute plans via delegatetask subagents (2-stage review).
setup-dsh-bridge
Set up, repair, or reconfigure DSH Codex Bridge for the current Git project. Use when the user installs the plugin, asks to configure DSH, add or switch a model, change the default Profile, preview model configuration, roll back a Profile change, or when delegation reports missing/invalid Bridge configuration.
delegate-to-dsh
A workflow for sending a defined coding task to DeepSeek Harness, an alternate coding worker, in a separate worktree. Codex plans and reviews the returned patch and evidence.
Subagent Driven Development
Orchestrate specialized, autonomous AI agents to execute parallel subtasks with strict boundaries.