tech-writer

tech-writer is a skill for Claude Code, Codex from GobbyAI/gobby. It costs 47 tokens per session (2,208 once invoked), scanned A, original, no licence file.

A guide for creating, auditing, and updating technical documentation. It also covers diagrams in Mermaid, a text-based diagram format, and explanations for documentation readers.

In plain words
What is it for?
Writing or revising technical guides, checking documentation against code, creating Mermaid diagrams, and explaining technical concepts.
Why use it?
It helps keep guides accurate, understandable, and aligned with the codebase.

Skill for Claude CodeCodex

Part of the code-navigator plugin — 43 skills, 1 agent shipped together

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.

agentmods
npx agentmods add skills/gobbyai/gobby/tech-writer
Any agent
npx skills add GobbyAI/gobby --skill tech-writer
Clone the repo
git clone --depth 1 https://github.com/GobbyAI/gobby

Made for: Claude Code, Codex.

Or install code-navigator, the plugin that ships this one along with the rest of its 43 skills, 1 agent.

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 tech-writer

README.md
[![agentmods](https://agentmods.dev/badge/skills/gobbyai/gobby/tech-writer.svg)](https://agentmods.dev/skills/gobbyai/gobby/tech-writer)
Your own site
<a href="https://agentmods.dev/skills/gobbyai/gobby/tech-writer"><img src="https://agentmods.dev/badge/skills/gobbyai/gobby/tech-writer.svg" alt="Measured on agentmods" height="20"></a>
Per session 47 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,208 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin unknown 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 $0.00047 $0.02208
Opus 5 $0.00023 $0.01104
Sonnet 5 $0.00009 $0.00442
Haiku 4.5 $0.00005 $0.00221

Measured 5d ago against content hash 733a64d71606, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

tech-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 5d 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.

src/gobby/install/shared/skills/tech-writer/SKILL.md · 191 lines

The source is not reproduced here

A licence we could not identify

The repository carries a LICENSE file, but it is custom or dual enough that GitHub cannot name it and neither can this catalogue. Unknown terms are not permission, so the body is not copied here. Read the licence at the source and decide for yourself.

Read it on GitHub

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. 5d ago First seen · 191 lines · 47 tokens per session scan A 733a64d71606

Subscribe to this mod's changes

tech-writer is a skill published in the GitHub repository GobbyAI/gobby (19 stars, last pushed 3d ago), with no licence file. It adds 47 tokens to every session and 2,208 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 2026-08-30.