build

A command that reads a supplied implementation plan and carries out the work described in it. It then reports the plan’s stated results.

In plain words
What is it for?
Use it when you have a plan file to implement and want the agent to follow it, including reading referenced images and presenting the plan’s report.
Why use it?
It gives a repeatable way to turn an existing plan into code while requiring the plan and its images to be reviewed first.

Command for Claude Code

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/disler/pi-agent-observability/build
Clone the repo
git clone --depth 1 https://github.com/disler/pi-agent-observability

Made for: Claude Code.

Per session 3 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 135 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 $0.00003 $0.00135
Opus 5 $0.00002 $0.00068
Sonnet 5 $0.00001 $0.00027
Haiku 4.5 $0.00000 $0.00014

Measured 3d ago against content hash 892ef33d7d87, 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 3d 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 · 22 lines

What it actually says

Build

Follow the Workflow to implement the PATH_TO_PLAN then Report the completed work.

Variables

PATH_TO_PLAN: $ARGUMENTS

Workflow

  • If no PATH_TO_PLAN is provided, STOP immediately and ask the user to provide it (AskUserQuestion).
  • Read every image inside the plan before you start, no exceptions.
  • Read and execute the plan at PATH_TO_PLAN. Think hard about the plan and implement it into the codebase.

Report

  • Present the ## Report section of the plan.
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. 3d ago First seen · 22 lines · 3 tokens per session scan A 892ef33d7d87

Subscribe to this mod's changes

build is a command published in the GitHub repository disler/pi-agent-observability (142 stars, last pushed 3mo ago), licensed MIT. It adds 3 tokens to every session and 135 once invoked, about $0.0000 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.