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 markus-global/markus --skill team-buildinggit clone --depth 1 https://github.com/markus-global/markusWrote 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/markus-global/markus/team-building)<a href="https://agentmods.dev/skills/markus-global/markus/team-building"><img src="https://agentmods.dev/badge/skills/markus-global/markus/team-building/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/markus-global/markus/team-building"><img src="https://agentmods.dev/badge/skills/markus-global/markus/team-building.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 4 findings, up to medium
These are SkillSpector’s own severities. On a checked sample its high-severity flags on skills were ~96% false positives — a documented command, a public API, a “never do X” rule — so we show them as a caution to read, not a verdict. Why →
- medium Rogue Agent · line 3 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 78 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 138 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
- medium Rogue Agent · line 273 Skill establishes unauthorized persistence across sessions via cron jobs, startup scripts, or state files. Session persistence allows an attacker to maintain access beyond the current interaction.Fix: Remove any persistence mechanisms (cron jobs, startup scripts, state files). Skills should not maintain state across sessions without explicit user consent.
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 | $0.00018 | $0.05386 |
| Opus 5.5 | $0.00007 | $0.02154 |
| Sonnet 5.5 | $0.00004 | $0.01077 |
| Haiku 4.5 | $0.00002 | $0.00539 |
Grade A, and why
team-building 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 1mo 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.
How it starts
The opening of the file, as written. The whole thing — 400 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Team Building
This skill teaches you how to create Markus team packages — self-contained directory-based artifacts that define a group of specialized AI agents with shared norms and coordination structure.
Core Philosophy
Every agent in a team must be a specialist. Do NOT simply pick generic templates and give them names. Design each agent with a unique identity, expertise, and detailed role documentation. Safety constraints are defined in each agent's POLICIES.md, not through tool restrictions.
Artifact Directory
CRITICAL: Team artifacts MUST be saved under this exact path — the Builder page, install system, and deliverable detection all depend on it:
~/.markus/builder-artifacts/teams/{team-name}/
├── team.json # Manifest (you write via file_write)
├── README.md # Public-facing team overview for Hub/Builder (REQUIRED)
├── ANNOUNCEMENT.md # Team announcement (you write via file_write)
├── NORMS.md # Working norms (you write via file_write)
├── images/ # Team-level images (icon, etc.)
│ └── icon.png # Team icon — used as avatar after install
├── workflows/ # Workflow templates (optional)
│ └── {workflow-name}.yaml # YAML workflow DAG definition
└── members/
├── {manager-slug}/
│ ├── ROLE.md # Identity and system prompt (REQUIRED)
│ ├── HEARTBEAT.md # Periodic self-check checklist (RECOMMENDED)
│ ├── POLICIES.md # Constraints and guardrails (optional)
│ ├── CONTEXT.md # Domain context and references (optional)
│ └── images/ # Member avatar images (e.g. avatar.jpg)
└── {worker-slug}/
├── ROLE.md # Identity and system prompt (REQUIRED)
├── HEARTBEAT.md # Periodic self-check checklist (RECOMMENDED)
├── POLICIES.md # Constraints and guardrails (optional)
├── CONTEXT.md # Domain context and references (optional)
└── images/ # Member avatar images (e.g. avatar.jpg)
What ships with it
1 file 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.
- 1mo ago First seen · 400 lines · 18 tokens per session scan A 613b1b0a8290
team-building is a skill published in the GitHub repository markus-global/markus (207 stars, last pushed today), licensed Apache-2.0. It adds 18 tokens to every session and 5,386 once invoked, about $0.0001 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 2026-08-30.
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