build

build is a command for Claude Code from 233i/agent-skills. It costs 18 tokens per session (197 once invoked), scanned A, original, MIT.

A command for completing planned tasks one at a time through testing, implementation, building, verification, and a clear commit. It uses the task's acceptance criteria and existing project patterns as guidance.

In plain words
What is it for?
Use it to implement the next task from a plan, write the initial failing test, build the project, run all tests, commit the result, and mark the task complete.
Why use it?
It keeps changes small and verifiable, making failures and regressions easier to detect before moving on.

Command for Claude Code

Part of the agent-skills plugin — 20 skills, 7 commands, 3 agents, 1 hook 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 commands/233i/agent-skills/build
Clone the repo
git clone --depth 1 https://github.com/233i/agent-skills

Made for: Claude Code.

Or install agent-skills, the plugin that ships this one along with the rest of its 20 skills, 7 commands, 3 agents, 1 hook.

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 build

README.md
[![agentmods](https://agentmods.dev/badge/commands/233i/agent-skills/build.svg)](https://agentmods.dev/commands/233i/agent-skills/build)
Your own site
<a href="https://agentmods.dev/commands/233i/agent-skills/build"><img src="https://agentmods.dev/badge/commands/233i/agent-skills/build.svg" alt="Measured on agentmods" height="20"></a>
Per session 18 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 197 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 $0.00018 $0.00197
Opus 5 $0.00009 $0.00098
Sonnet 5 $0.00004 $0.00039
Haiku 4.5 $0.00002 $0.00020

Measured 4d ago against content hash 14826c61ddd7, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

build 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 4d 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/commands/build.md · 19 lines

What it actually says

调用 agent-skills:incremental-implementation,并同时启用 agent-skills:test-driven-development

从计划中选择下一个待完成任务。对每个任务:

  1. 阅读任务的 acceptance criteria
  2. 加载相关上下文,例如现有代码、已有模式、类型定义
  3. 先为预期行为写一个失败测试(RED)
  4. 只实现让测试通过所需的最小代码(GREEN)
  5. 运行完整测试套件,检查是否有回归
  6. 运行构建,确认可以编译通过
  7. 使用清晰的提交信息完成提交
  8. 将该任务标记为完成,然后进入下一个任务

如果任一步失败,就切换到 agent-skills:debugging-and-error-recovery

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. 4d ago First seen · 19 lines · 18 tokens per session scan A 14826c61ddd7

Subscribe to this mod's changes

build is a command published in the GitHub repository 233i/agent-skills (6 stars, last pushed 5mo ago), licensed MIT. It adds 18 tokens to every session and 197 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 2026-08-31.