claude-em: Skill for Claude Code

.claude/skills/write-update/SKILL.md

write-update is a skill for Claude Code from jcesarperez/claude-em. It costs 43 tokens per session (1,861 once invoked), scanned A, original, MIT.

A team-update writing guide that gathers recent information from Jira, a project-tracking tool, Slack, a team chat app, and configured web pages.

In plain words
What is it for?
Use it to prepare weekly, monthly, or other periodic updates for an engineering team.
Why use it?
It reduces the effort of collecting scattered progress and turning it into a regular team report.

Skill for Claude Code

Written for Claude Code: installed under .claude/. Also seen: mentions subagents.

This is jcesarperez/claude-em's own configuration. It tells Claude Code how to work on claude-em itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything claude-em configures →

Reuse

Borrowing it

Nothing to install: this file belongs to jcesarperez/claude-em. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/jcesarperez/claude-em/main/.claude/skills/write-update/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/jcesarperez/claude-em

Made for: Claude Code.

Wrote 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.

agentmods badge for write-update

README.md
[![agentmods](https://agentmods.dev/badge/skills/jcesarperez/claude-em/write-update/github.svg)](https://agentmods.dev/skills/jcesarperez/claude-em/write-update)
Your own site
<a href="https://agentmods.dev/skills/jcesarperez/claude-em/write-update"><img src="https://agentmods.dev/badge/skills/jcesarperez/claude-em/write-update/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.

agentmods 80×15 button for write-update

Your own site · 80×15
<a href="https://agentmods.dev/skills/jcesarperez/claude-em/write-update"><img src="https://agentmods.dev/badge/skills/jcesarperez/claude-em/write-update.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 43 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 1,861 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin original No closer match found in the catalogue.
Token cost

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.

ModelPer sessionOnce invoked
Fable 5.1 $0.00043 $0.01861
Opus 5.5 $0.00017 $0.00744
Sonnet 5.5 $0.00009 $0.00372
Haiku 4.5 $0.00004 $0.00186

Measured 2mo ago against content hash 56065efee531, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

write-update 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 2mo 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.

.claude/skills/write-update/SKILL.md · 181 lines

How it starts

The opening of the file, as written. The whole thing — 181 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Skill: Write Update

You are helping an Engineering Manager write a periodic update for their team.


Step 1 — Determine inputs

Check the user's prompt for:

  • Team (required — e.g. "events"). If missing, ask.
  • Format (optional — template name). If missing, list the .md files in this skill's assets/ folder and ask the user to choose.
  • Date range (optional — defaults to last 7 days inclusive from today). Accept natural language like "last week" or "from Monday to Sunday". Convert to absolute dates before passing to subagents.

Once you have the team, read data/team_{name}.md and extract:

  • Jira project key, board ID, Jira skill name, and conventions
  • Slack channels (under ## Slack)
  • Update source URLs (under ## Update Sources)

Then read the chosen template file. If it contains an ## Instructions section, follow those instructions now — before deciding which sources to query. The instructions may:

  • Tell you to ask the user which project this update is for
  • Restrict which Jira epics, Slack channels, and URLs to use
  • Tell you to filter shared sources (e.g. meeting notes) by project name or epic keys

Resolve all source scoping decisions before launching subagents in Step 2.


Step 2 — Collect data via parallel subagents

Launch one subagent per data source using the Agent tool, all in parallel (single message, multiple tool calls). Do not wait for one before launching the others.

Pass each subagent only what it needs. Each subagent must return a structured summary — never raw content.

Subagent: Jira

Prompt template:

You are collecting Jira data for a team update.

Team: {team} Date range: {date_from} to {date_to} Jira project key: {project_key} Jira skill: {jira_skill} Jira conventions: {conventions}

Use the {jira_skill} skill to query:

  • Epics updated or closed in this date range
  • Issues updated or closed in this date range
  • Apply all team-specific filters

Return a structured summary with:

  • Completed: list of done items (title, Jira URL, epic they belong to, any metrics)
  • In progress / updated: notable items that moved but aren't done
  • Incidents / bugs: any incidents or customer cases
  • Allocation: counts by Strategy / Scale / KTLO if available

If data is unavailable, return {"error": "reason"}.

Read the full file on GitHub · 181 lines

Files

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.

Changes

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.

  1. 2mo ago First seen · 181 lines · 43 tokens per session scan A 56065efee531

Subscribe to this mod's changes

write-update is a skill published in the GitHub repository jcesarperez/claude-em (95 stars, last pushed 4mo ago), licensed MIT. It adds 43 tokens to every session and 1,861 once invoked, about $0.0002 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.

Related

write-update compared with skills from other repositories

write-update next to 6 skills from other repositories
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