build

A deep implementation agent that explores the relevant code, plans the work, makes changes, and verifies them with checks such as builds and tests.

In plain words
What is it for?
Use it for complex implementation tasks, multi-file changes, architecture decisions, builds, lint checks, and tests.
Why use it?
It provides a structured process for changes that involve several files or important design decisions. Verification helps catch errors before the work is considered complete.

Command

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/tmcfarlane/oh-my-cursor/build
Clone the repo
git clone --depth 1 https://github.com/tmcfarlane/oh-my-cursor
Per session 0 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 97 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 $0.00000 $0.00097
Opus 5 $0.00000 $0.00048
Sonnet 5 $0.00000 $0.00019
Haiku 4.5 $0.00000 $0.00010

Measured 2d ago against content hash 597a618f7325, 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 2d 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.

commands/build.md · 9 lines

What it actually says

Use Aang (the deep executor agent) for this implementation task.

  1. Explore the relevant codebase areas to understand existing patterns and context.
  2. Plan the specific changes needed, creating a todo list for multi-step work.
  3. Execute the changes, matching existing codebase conventions.
  4. Verify with ReadLints, build, and tests after every change.

Keep going until completely done. Do not stop for confirmation mid-implementation.

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. 2d ago First seen · 9 lines · 0 tokens per session scan A 597a618f7325

Subscribe to this mod's changes

build is a command published in the GitHub repository tmcfarlane/oh-my-cursor (108 stars, last pushed 2mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 97 tokens. 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.