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 cosmicstack-labs/mercury-agent-skills --skill technical-writinggit clone --depth 1 https://github.com/cosmicstack-labs/mercury-agent-skillsWrote 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/cosmicstack-labs/mercury-agent-skills/technical-writing)<a href="https://agentmods.dev/skills/cosmicstack-labs/mercury-agent-skills/technical-writing"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/technical-writing/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/cosmicstack-labs/mercury-agent-skills/technical-writing"><img src="https://agentmods.dev/badge/skills/cosmicstack-labs/mercury-agent-skills/technical-writing.svg" alt="Reviewed on agentmods" width="80" height="20"></a>- NVIDIA SkillSpector warn
SkillSpector: 9 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 MCP Rug Pull · line 291 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 499 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 294 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 297 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 504 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 300 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 508 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 452 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
- medium MCP Rug Pull · line 460 npx commands without a version suffix (e.g. @1.0.0) create a rug-pull risk if the upstream server is compromised and publishes a malicious update.Fix: Pin the version: npx @scope/[email protected]
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 | $0.00023 | $0.04295 |
| Opus 5 | $0.00012 | $0.02148 |
| Sonnet 5 | $0.00005 | $0.00859 |
| Haiku 4.5 | $0.00002 | $0.00430 |
Grade A, and why
technical-writing 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 8d 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 — 557 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Technical Writing Mastery
Write clear, effective technical documentation that your audience can actually use — SOPs that get followed, manuals that solve problems, and release notes that keep everyone informed.
Core Principles
1. Know Your Audience
Every document serves a specific reader with a specific goal. A system administrator reading an SOP needs exact CLI commands. An end-user reading a manual needs step-by-step workflows. A developer reading release notes needs to know what changed and whether it breaks their code.
2. Active Voice, Plain Language
Write directly. "The system processes the request" — not "The request is processed by the system." Use plain language: "Start the server" instead of "Initiate the server startup sequence."
3. Structure for Scanning
Most people don't read documentation — they scan it. Use clear headings, bullet lists, tables, and bold key terms so readers find what they need in seconds.
4. One Task Per Section
Each section should answer one question or guide one action. If a section covers more than one task, split it.
5. Test Everything You Write
If you write a command, run it. If you write a procedure, follow it exactly as written. Nothing erodes trust faster than instructions that don't work.
Technical Writing Maturity Model
| Level | Audience Awareness | Style Consistency | Structure | Review Process | Maintenance |
|---|---|---|---|---|---|
| 1: Ad Hoc | None — one-size-fits-all | Inconsistent tone and voice | No headings, walls of text | No review | Never updated |
| 2: Basic | Some awareness of primary audience | Mostly consistent | Basic headings, some lists | Peer review occasionally | Updated for major releases |
| 3: Structured | Audience-defined docs for different readers | Style guide followed | Clear hierarchy, tables, scanned layout | Dedicated review cycle | Updated with each release |
| 4: Systematic | Persona-based documentation | Automated style linting | Information architecture mapped | SME + editor review | Versioned, changelog maintained |
| 5: Exemplary | Proactive content based on user analytics | Programmatic consistency enforced | Modular, reusable content components | Automated + multi-stage review | Continuous updates, feedback-driven |
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.
- 8d ago First seen · 557 lines · 23 tokens per session scan A 8e57affd6ebd
technical-writing is a skill published in the GitHub repository cosmicstack-labs/mercury-agent-skills (470 stars, last pushed 17d ago), licensed MIT. It adds 23 tokens to every session and 4,295 once invoked, about $0.0001 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 2026-09-03.
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