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A Prompt Optimizer

A Prompt Optimizer is a skill for Claude Code, Codex from strativd/ai-skills. It costs 31 tokens per session (643 once invoked), scanned A, original, no licence file.

A prompt-writing tool that turns a basic request into a more detailed prompt by adding useful context. A prompt is the instruction given to an AI system.

In plain words
What is it for?
It is for improving prompts before they are sent to an AI system.
Why use it?
It helps when a short request does not give an AI enough information to produce the intended result.

Skill for Claude CodeCodex

Which agent this was written for is unclear — body not stored (licence); the path alone says nothing.

not rated 10repo 9mo ago A scan 31 tokens no licence

Good fit It is for improving prompts before they are sent to an AI system.

Compare 6 skills from other repositories ↓
Install with agentmods
npx agentmods add skills/strativd/ai-skills/a-prompt-optimizer
View source ↗ strativd/ai-skills
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.

Any agent
npx skills add strativd/ai-skills --skill a-prompt-optimizer
Clone the repo
git clone --depth 1 https://github.com/strativd/ai-skills

Made for: Claude Code, Codex.

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 A Prompt Optimizer

README.md
[![agentmods](https://agentmods.dev/badge/skills/strativd/ai-skills/a-prompt-optimizer/github.svg)](https://agentmods.dev/skills/strativd/ai-skills/a-prompt-optimizer)
Your own site
<a href="https://agentmods.dev/skills/strativd/ai-skills/a-prompt-optimizer"><img src="https://agentmods.dev/badge/skills/strativd/ai-skills/a-prompt-optimizer/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for A Prompt Optimizer

Your own site · 80×15
<a href="https://agentmods.dev/skills/strativd/ai-skills/a-prompt-optimizer"><img src="https://agentmods.dev/badge/skills/strativd/ai-skills/a-prompt-optimizer.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 31 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 643 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
Origin unknown 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 $0.00031 $0.00643
Opus 5.5 $0.00012 $0.00257
Sonnet 5.5 $0.00006 $0.00129
Haiku 4.5 $0.00003 $0.00064

Measured 2mo ago against content hash 2dd7eea5144e, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

A Prompt Optimizer 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 2mo 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.

skills/a-prompt-optimizer/SKILL.md · 66 lines

The source is not reproduced here

No licence file

A repository with no LICENSE is all rights reserved by default, so the body is not copied here. The metadata, the measurements and the link are.

Read it on GitHub

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. 2mo ago First seen · 66 lines · 31 tokens per session scan A 2dd7eea5144e

Subscribe to this mod's changes

A Prompt Optimizer is a skill published in the GitHub repository strativd/ai-skills (10 stars, last pushed 9mo ago), with no licence file. It adds 31 tokens to every session and 643 once invoked, about $0.0001 per session on Opus 5.5. 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.

Data and AIPrompting
Related

A Prompt Optimizer compared with skills from other repositories

A Prompt Optimizer next to 6 skills from other repositories
ModTypeStarsLast pushLicenceScanTokensWorks with
A Prompt Optimizerstrativd/ai-skillsSkill109mo agononeA31Claude Code, Codex
llm-app-patternsdavila7/claude-code-templatesSkill33ktodayMITA54Claude Code, Codex
prompt-engineerJeffallan/claude-skillsSkill12k7d agoMITA93Claude Code
prompt-optimizationlangwatch/langwatchSkill5.0ktodayApache-2.0A105Claude Code, Codex
omh-model-optimizationrlaope/oh-my-hermesSkill5.2ktodayMITA84Claude Code, Codex
ideogram4digitalsamba/claude-code-video-toolkitSkill2.5ktodayMITA99Claude Code
prompt-library-for-startupsaws/agent-toolkit-for-awsSkill3.4ktodayApache-2.0A228Claude Code