do-it-handbook

do-it-handbook is a skill for Claude Code, Codex from tdwhere123/do-it. It costs 21 tokens per session (190 once invoked), scanned A, original, MIT.

A project handbook setup for recording stable facts, architecture rules, and key terms, with separate notes for daily work and goals.

In plain words
What is it for?
Use it to create a .do-it directory with a handbook, work logs, planning areas, and project context when a codebase is becoming harder to understand.
Why use it?
It gives agents and new contributors a shared place to find lasting project information, so the same explanations do not have to be rediscovered each session.

Skill for Claude CodeCodex

Part of the do-it plugin — 11 skills, 3 commands, 10 agents, 3 hooks 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/tdwhere123/do-it/do-it-handbook
Any agent
npx skills add tdwhere123/do-it --skill do-it-handbook
Clone the repo
git clone --depth 1 https://github.com/tdwhere123/do-it

Made for: Claude Code, Codex.

Or install do-it, the plugin that ships this one along with the rest of its 11 skills, 3 commands, 10 agents, 3 hooks.

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 do-it-handbook

README.md
[![agentmods](https://agentmods.dev/badge/skills/tdwhere123/do-it/do-it-handbook.svg)](https://agentmods.dev/skills/tdwhere123/do-it/do-it-handbook)
Your own site
<a href="https://agentmods.dev/skills/tdwhere123/do-it/do-it-handbook"><img src="https://agentmods.dev/badge/skills/tdwhere123/do-it/do-it-handbook.svg" alt="Measured on agentmods" height="20"></a>
Per session 21 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 190 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
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 $0.00021 $0.00190
Opus 5 $0.00010 $0.00095
Sonnet 5 $0.00004 $0.00038
Haiku 4.5 $0.00002 $0.00019

Measured today against content hash 877cc4b36b4a, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

do-it-handbook 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 today.

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.

plugins/do-it-cursor/skills/do-it-handbook/SKILL.md · 21 lines

What it actually says

Handbook

Reuse the project's existing instructions and documentation first. Persist stable invariants, architecture relationships, and terms where contributors already look. Keep temporary task progress separate from long-lived project truth.

Create a handbook only when requested or when a concrete continuity need makes it helpful. No .do-it tree is required to use this plugin. A small existing file may be enough; avoid duplicating a docs/handbook or similar source.

For an explicit bootstrap request, the templates in this skill are optional starting points. Create only useful missing files, preserve existing contents, and explain where the project should maintain them. Do not automatically migrate, overwrite, or remove user plans, profiles, memory, or old directories. Use the project's format for task notes and explicit links for handoffs.

Files

What ships with it

6 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. today Changed · -188 lines · -27 tokens per session 877cc4b36b4a
  2. yesterday Changed · +41 lines · +10 tokens per session 1a18a4fcfffd
  3. 5d ago First seen · 168 lines · 38 tokens per session scan A 475d5170840e

Subscribe to this mod's changes

do-it-handbook is a skill published in the GitHub repository tdwhere123/do-it (27 stars, last pushed today), licensed MIT. It adds 21 tokens to every session and 190 once invoked, about $0.0001 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.