write-longform

write-longform is a skill for Claude Code, Codex from forsvn-labs/meta-skills. It costs 58 tokens per session (430 once invoked), scanned A, original, MIT.

A writing guide for producing researched, publishable long-form arguments such as essays, reports, and guides.

In plain words
What is it for?
Use it to plan and write articles, founder essays, thought-leadership pieces, and other evidence-based documents.
Why use it?
It helps turn a central claim and supporting evidence into a structured draft without invented sources, stories, customers, or results.

Skill for Claude CodeCodex

Written for Claude Code and Codex: shipped in a Claude Code plugin, but also agents/openai.yaml present.

Part of the conquistador plugin — 21 skills shipped together

Good fit Use it to plan and write articles, founder essays, thought-leadership pieces, and other evidence-based documents.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/forsvn-labs/meta-skills/write-longform
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.

Any agent
npx skills add forsvn-labs/meta-skills --skill write-longform
Clone the repo
git clone --depth 1 https://github.com/forsvn-labs/meta-skills

Made for: Claude Code, Codex.

Or install conquistador, the plugin that ships this one along with the rest of its 21 skills.

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-longform

README.md
[![agentmods](https://agentmods.dev/badge/skills/forsvn-labs/meta-skills/write-longform/github.svg)](https://agentmods.dev/skills/forsvn-labs/meta-skills/write-longform)
Your own site
<a href="https://agentmods.dev/skills/forsvn-labs/meta-skills/write-longform"><img src="https://agentmods.dev/badge/skills/forsvn-labs/meta-skills/write-longform/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-longform

Your own site · 80×15
<a href="https://agentmods.dev/skills/forsvn-labs/meta-skills/write-longform"><img src="https://agentmods.dev/badge/skills/forsvn-labs/meta-skills/write-longform.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 58 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 430 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 $0.00058 $0.00430
Opus 5 $0.00029 $0.00215
Sonnet 5 $0.00012 $0.00086
Haiku 4.5 $0.00006 $0.00043

Measured 10d ago against content hash f444199ee3e4, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-10, from the pricing page.

Security

Grade A, and why

write-longform 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 10d 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.

skills/write-longform/SKILL.md · 57 lines

What it actually says

Write a defensible long-form argument

Produce a finished piece that advances one consequential thesis. Length is a consequence of the argument, not the goal.

Establish the thesis and evidence

State the audience, decision or belief the piece should change, thesis, strongest objection, and why the author has standing to make the argument.

Build an evidence map before drafting:

  • observed facts with current primary sources;
  • operator-supplied experience and examples;
  • reasonable inferences labeled as such;
  • representative or hypothetical examples labeled clearly;
  • claims that remain unknown and what would establish them.

Do not use invented anecdotes, citations, customers, results, or authority.

Build the argument

Outline the minimum sequence needed to prove the thesis. Each section must introduce evidence, resolve an objection, distinguish an alternative, or advance the conclusion.

Open with the costly tension rather than a generic topic introduction. Explain mechanisms, not only positions. Steelman the strongest objections and name where the argument does not apply.

Write in the requested author/brand voice. Use specificity, varied sentence structure, concrete examples, and transitions that show why the next section follows. Avoid fragment-heavy “thought leadership,” empty aphorisms, and summary that merely repeats headings.

Review

Check:

  • thesis remains stable and non-obvious;
  • every factual claim is traceable;
  • examples do not masquerade as evidence;
  • objections receive substantive answers;
  • the conclusion creates a decision or operating principle;
  • removing a paragraph would either improve focus or break the argument.

Deliver

Return the finished piece, title/deck when useful, a short source/claim note, and any fact that must be verified before publication. Publishing and external submission remain human-owned.

Files

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.

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. 10d ago First seen · 57 lines · 58 tokens per session scan A f444199ee3e4

Subscribe to this mod's changes

write-longform is a skill published in the GitHub repository forsvn-labs/meta-skills (14 stars, last pushed 1mo ago), licensed MIT. It adds 58 tokens to every session and 430 once invoked, about $0.0003 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 2026-08-30.

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