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.
npx skills add btspoony/mstar-harness --skill mstar-hostgit clone --depth 1 https://github.com/btspoony/mstar-harnessWrote 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/btspoony/mstar-harness/mstar-host)<a href="https://agentmods.dev/skills/btspoony/mstar-harness/mstar-host"><img src="https://agentmods.dev/badge/skills/btspoony/mstar-harness/mstar-host/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.
<a href="https://agentmods.dev/skills/btspoony/mstar-harness/mstar-host"><img src="https://agentmods.dev/badge/skills/btspoony/mstar-harness/mstar-host.svg" alt="Reviewed on agentmods" width="80" 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 | $0.00099 | $0.02536 |
| Opus 5 | $0.00049 | $0.01268 |
| Sonnet 5 | $0.00020 | $0.00507 |
| Haiku 4.5 | $0.00010 | $0.00254 |
Grade A, and why
mstar-host 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 today.
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.
How it starts
The opening of the file, as written. The whole thing — 99 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Morning Star Host Adapter
Host-specific capabilities and entry behavior for Morning Star. Process gates and invariants stay in mstar-harness-core and topic mstar-* skills.
Load order
本 skill 总是在 mstar-harness-core 之后加载（先 Read mstar-harness-core SKILL.md；宿主注入项目 AGENTS.md 也不跳过，见下 ## First action）。本 skill 只适配宿主入口 / 检测 / 计划 UX；状态机与门禁以 mstar-harness-core 为准。
First action
Read mstar-harness-core before this skill (even when the host injects project AGENTS.md).
Default path
- Read
mstar-harness-core - Read
mstar-host(this skill) and detect host below - Read
references/<host>.mdfor the active host - Load role via
mstar-roles - Execute with evidence-first completion checks
Load topic skills on demand per mstar-roles (do not read every mstar-* skill by default). Cursor routing-eval (.cursor/skills/mstar-routing-eval/) is regression tooling only — not part of runtime load order.
Detect active host
Detect from session tool shapes and available commands — not from plugin markers on disk. The *-plugin/plugin.json files cannot identify the host: they all coexist in this harness source repo and in any multi-host install.
| Signal | Host | Next read |
|---|---|---|
subagent_type param on the Task tool (plus CreatePlan/SwitchMode when Plan mode is active) |
cursor |
references/cursor.md; Plan mode also references/cursor-plan-mode-bridge.md |
question tool, or task tool with subagent (singular) — no tasks[] batch |
opencode |
references/opencode.md |
task tool with agent / tasks[] batch, ask, hub (omp also exposes /goal; goal rule is host-agnostic per below) |
omp |
references/omp.md; Plan mode also references/omp-plan-mode-bridge.md |
subagent tool (dsh's model-facing delegation tool — @deepseek-ai/dsh-tool-subagent default toolName) |
dsh |
references/dsh.md |
Agent / AskUserQuestion / EnterPlanMode + AgentSwarm (Kimi-only) |
kimi |
references/kimi.md; Plan mode also references/kimi-plan-mode-bridge.md |
Agent / AskUserQuestion / EnterPlanMode / TodoWrite, no AgentSwarm |
zcode |
references/zcode.md; Plan mode also references/zcode-plan-mode-bridge.md |
/plan, /goal slash commands; Goal tools; functions.* / codex_app.* tool namespaces; tool_search; Browser plugin tools |
codex |
references/codex.md; Plan mode also references/_shared/plan-mode-bridge-core.md |
| Still ambiguous | - | Read sections in cursor.md, opencode.md, codex.md, kimi.md, zcode.md, omp.md, and dsh.md that match tools you have; mstar-harness-core wins on conflict |
What ships with it
15 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.
- references/_shared/host-role-binding-core.md 2.9 KB
- references/_shared/plan-mode-bridge-core.md 7.9 KB
- references/codex.md 5.5 KB
- references/cursor-plan-mode-bridge.md 9.2 KB
- references/cursor.md 10 KB
- references/dsh-workflow-scripts.md 19 KB
- references/dsh.md 33 KB
- references/kimi-plan-mode-bridge.md 3.0 KB
- references/kimi.md 7.5 KB
- references/omp-plan-mode-bridge.md 2.5 KB
- references/omp.md 20 KB
- references/opencode.md 5.1 KB
- references/parallel-dispatch.md 5.7 KB
- references/zcode-plan-mode-bridge.md 3.0 KB
- references/zcode.md 11 KB
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.
- today Changed · +2 lines 7f72fc8f7bc1
- 8d ago Changed · -125 tokens per session 8b391fbdb6d5
- 12d ago First seen · 97 lines · 224 tokens per session scan A 0ad2d7c468cc
mstar-host is a skill published in the GitHub repository btspoony/mstar-harness (57 stars, last pushed today), licensed MIT. It adds 99 tokens to every session and 2,536 once invoked, about $0.0005 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 2026-08-30.
Other skills, from other repositories
comet-native
A workflow for managing Native changes in Comet, where requirements, progress, and acceptance results are saved in project files. It uses the Comet command-line runtime to move through defined work stages.
comet-build
A Comet workflow step for turning an approved design into an implementation plan and completed code changes. Comet is the project workflow system described by the add-on.
comet-classic
A Chinese-language workflow guide for starting or resuming a structured software change using OpenSpec and Superpowers.
comet-open
A guide for starting an OpenSpec change: a tracked software task with proposal, design, task, and state files. It also covers choosing or restoring the correct project workspace and output language.
comet-build
Comet Phase 3: Plan and Build. Invoke with /comet-build. Create plans and select execution method (subagent or direct) for implementation.
subagent-driven-development
Use when executing implementation plans with independent tasks in the current session.