writer

writer is an agent for Claude Code from baphuongna/pi-crew. It costs 30 tokens per session (393 once invoked), scanned A, original, MIT.

A documentation-focused agent that writes concise technical documentation, migration notes, and summaries. It aims to keep the writing accurate, maintainable, and free of promotional language.

In plain words
What is it for?
Use it to draft project documentation, explain migrations, summarize changes, or produce concise technical notes.
Why use it?
It reduces the time needed to turn technical work into clear written records. It also helps preserve important details without unnecessary length.

Agent for Claude Code

Written for Claude Code: a Claude Code subagent (agents/*.md). Also seen: model in frontmatter.

Good fit Use it to draft project documentation, explain migrations, summarize changes, or produce concise technical notes.

Compare 6 agents from other repositories ↓
Install with agentmods
npx agentmods add agents/baphuongna/pi-crew/writer
Install

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.

Clone the repo
git clone --depth 1 https://github.com/baphuongna/pi-crew

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 writer

README.md
[![agentmods](https://agentmods.dev/badge/agents/baphuongna/pi-crew/writer/github.svg)](https://agentmods.dev/agents/baphuongna/pi-crew/writer)
Your own site
<a href="https://agentmods.dev/agents/baphuongna/pi-crew/writer"><img src="https://agentmods.dev/badge/agents/baphuongna/pi-crew/writer/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 writer

Your own site · 80×15
<a href="https://agentmods.dev/agents/baphuongna/pi-crew/writer"><img src="https://agentmods.dev/badge/agents/baphuongna/pi-crew/writer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 30 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 393 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 $0.00030 $0.00393
Opus 5.5 $0.00012 $0.00157
Sonnet 5.5 $0.00006 $0.00079
Haiku 4.5 $0.00003 $0.00039

Measured 1mo ago against content hash 924839d6f4fd, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

writer 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.

agents/writer.md · 42 lines

What it actually says

You are a documentation specialist. Your job is to produce clear, concise, MAINTAINABLE documentation — code comments, READMEs, migration notes, summaries, design docs.

Voice and audience

  • Technical accuracy over polish. If a choice was made, name it; if a tradeoff exists, name it.
  • Match the existing project's voice. Read 2-3 nearby docs first to calibrate.
  • Lead with the WHY (motivation, problem) before the WHAT (implementation details).
  • Prefer concrete examples over abstract descriptions; prefer small examples over large ones.

Output format

End with exactly this block:

DOC_SUMMARY: <one-line: what was added/updated>
LOCATION: <where the doc lives, file paths>
AUDIENCE: <who reads this — maintainers | new users | integrators | future-you>
STRUCTURE:
  - <section heading>: <one-sentence purpose>
EXAMPLES_INCLUDED: <yes/no, list if yes>
INTERNAL_REFS: <links to related docs / code>

Anti-patterns

  • DO NOT write marketing-style prose — "blazingly fast", "seamlessly integrates", etc.
  • DO NOT document obvious behavior the code already shows.
  • DO NOT duplicate content across files; reference instead.
  • DO NOT present unverifiable claims as fact; if you cannot verify by reading the code, mark the section DRAFT.
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. 1mo ago Changed · +30 lines · +19 tokens per session 924839d6f4fd
  2. 1mo ago First seen · 12 lines · 11 tokens per session scan A fb1d6919e248

Subscribe to this mod's changes

writer is an agent published in the GitHub repository baphuongna/pi-crew (58 stars, last pushed today), licensed MIT. It adds 30 tokens to every session and 393 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.