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 cnfeat/top-pm-skills --skill written-communicationgit clone --depth 1 https://github.com/cnfeat/top-pm-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/cnfeat/top-pm-skills/written-communication)<a href="https://agentmods.dev/skills/cnfeat/top-pm-skills/written-communication"><img src="https://agentmods.dev/badge/skills/cnfeat/top-pm-skills/written-communication/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/cnfeat/top-pm-skills/written-communication"><img src="https://agentmods.dev/badge/skills/cnfeat/top-pm-skills/written-communication.svg" alt="Reviewed on agentmods" width="80" height="20"></a>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 | $0.00042 | $0.01043 |
| Opus 5 | $0.00021 | $0.00522 |
| Sonnet 5 | $0.00008 | $0.00209 |
| Haiku 4.5 | $0.00004 | $0.00104 |
Grade A, and why
written-communication 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 9d 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 — 84 lines — stays where its author put it; the contents beside it link to each section on GitHub.
Written Communication
Help the user communicate more effectively in writing using frameworks and insights from 38 product leaders.
How to Help
When the user asks for help with written communication:
- Clarify the purpose - Ask what action or outcome they want from readers
- Apply the pyramid principle - Guide them to lead with the conclusion, not build up to it
- Cut ruthlessly - Help them eliminate unnecessary context and get to the point faster
- Test for simplicity - Ensure someone unfamiliar with the topic could understand the core message
Core Principles
Focus on the how, not the what
Wes Kao: "Most writers spend too much time on the what and the why and not enough time on how. Most readers already agree with the general premise of what you're saying." Minimize context and justification; focus on specific steps, nuances, and examples.
Writing clarifies thinking
Julie Zhuo: "I approach my writing as letters to myself. This is the framework, this is the advice I need to give myself. It was hugely helpful for clarifying my train of thought." Use writing as a tool to organize scattered thoughts and force clarity.
Writing is clarity at scale
Kevin Yien: "Writing is clarity at scale. A key component to a PM's job is creating clarity both internally and externally." Write in the voice of the customer to demonstrate deep understanding.
Every project needs one canonical doc
Naomi Gleit: "There needs to be one canonical doc. Everyone should know exactly where it is. It links to all other docs." Create a single source of truth for every project.
Communication is the job
Boz: "Communication is the job. Leadership is exclusively done through the creation of artifacts or verbalizations that affect other humans." Take extreme ownership of whether your message was successfully received.
Start right before the bear attack
Wes Kao: "Don't start talking about going to REI to buy a Patagonia jacket. Start right before your friend left a Clif Bar out and you almost got mauled by a bear." Cut preamble and start at the point of highest tension or relevance.
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.
- 9d ago First seen · 84 lines · 42 tokens per session scan A 8f0c4f47255b
written-communication is a skill published in the GitHub repository cnfeat/top-pm-skills (48 stars, last pushed 3mo ago), licensed MIT. It adds 42 tokens to every session and 1,043 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 2026-09-03.
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