fast

fast is a command for coding agents from SienkLogic/plan-build-run. It costs 22 tokens per session (49 once invoked), scanned A, original, MIT.

A command for carrying out a small, straightforward coding task directly, without separate planning or research steps.

In plain words
What is it for?
Use it for trivial code changes or maintenance tasks that are ready to execute immediately.
Why use it?
It avoids extra process when the task is simple enough to complete inline.

Command

Part of the pbr plugin — 45 skills, 71 commands, 18 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 commands/sienklogic/plan-build-run/fast
Clone the repo
git clone --depth 1 https://github.com/SienkLogic/plan-build-run

Or install pbr, the plugin that ships this one along with the rest of its 45 skills, 71 commands, 18 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 fast

README.md
[![agentmods](https://agentmods.dev/badge/commands/sienklogic/plan-build-run/fast.svg)](https://agentmods.dev/commands/sienklogic/plan-build-run/fast)
Your own site
<a href="https://agentmods.dev/commands/sienklogic/plan-build-run/fast"><img src="https://agentmods.dev/badge/commands/sienklogic/plan-build-run/fast.svg" alt="Measured on agentmods" height="20"></a>
Per session 22 Only the description is in the session, so the agent can decide to use it. The body loads when it is invoked.
When invoked 49 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 $0.00022 $0.00049
Opus 5 $0.00011 $0.00024
Sonnet 5 $0.00004 $0.00010
Haiku 4.5 $0.00002 $0.00005

Measured 5d ago against content hash 2f90e0b7880a, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

fast 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.

plugins/pbr/commands/fast.md · 7 lines

What it actually says

This command is provided by the pbr:fast skill.

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 · 7 lines · 22 tokens per session scan A 2f90e0b7880a

Subscribe to this mod's changes

fast is a command published in the GitHub repository SienkLogic/plan-build-run (17 stars, last pushed 5mo ago), licensed MIT. It adds 22 tokens to every session and 49 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.