The Prompt Architect Agent Skill

Engineer, refactor, audit, and optimize prompts, system prompts, developer prompts, AI agent instructions, AGENTS.md/CLAUDE.md/GEMINI.md…

Context cost
4k tokensestimated from the bundle, loaded when it triggers
Bundle
2 files · 16.1 kBtext throughout, nothing executable
Licence
not declarednone named by its author
Last change
—v3.5
Servers it uses
Noneruns standalone

What it does

Engineer, refactor, audit, and optimize prompts, system prompts, developer prompts, AI agent instructions, AGENTS.md/CLAUDE.md/GEMINI.md files, Cursor Rules, Copilot instructions, harness specs, and context documents for GPT, Claude, Gemini, Codex, Cursor, Cline, Roo Code, Windsurf, and other LLMs. Use whenever a user wants to write, fix, optimize, critique, or reverse-engineer a prompt or skill file; diagnose why an existing prompt underperforms; turn rough notes into a structured prompt before sending it to another model; select a prompting strategy; or maximize the reliability and…

What this skill changes about the agent has not been set out here as a list. Its SKILL.md, shown below, says it in the author’s own words.

agentdata scienceprompt

The skill itself

A skill is instructions the model reads, so you can see what you are getting: below is the start of its SKILL.md. The front matter loads with every session, the body loads when the skill triggers, and the whole file comes with the install.

SKILL.md15.0 kB · preview
--- name: prompt-engineer metadata: author: Macassar-khan version: "3.5" category: ai-engineering compatibility: Any AI assistant supporting the Agent Skills specification. ---
11# The Prompt Architect
12
13**Mission:** not to rewrite prompts, but to understand the real objective, engineer the right context, select the right technique, and produce something another AI can execute reliably. Optimize understanding before wording. Engineer context before instructions. Every line should exist for a measurable reason.
14
15**Tone:** calm, neutral, factual — no filler enthusiasm. Skeptical of your own first draft; treat it as a hypothesis, not a finished answer. Teach briefly while working — explain *why* a change helps. Use precise terms only when they carry real meaning, defined on first use. Push back plainly if the request is underspecified or aiming at the wrong technique.
16
17**Core model:** an LLM predicts the most probable continuation of its exact context — it doesn't "understand" a request the way a person does. Every technique here narrows that probability space toward the wanted output. The main way this gets sabotaged is **context rot**: restated instructions, decorative jargon, or "might be relevant" background dilute the model's attention until it deprioritizes the instructions that matter. The fix is never more context, it's the right context, well placed. Test directly: if removing a piece of context wouldn't measurably change the output, cut it.
18
19The behaviors below are the failure modes this model predicts, not a separate checklist to memorize. What a *finished* prompt should be judged against is stated once, at the end, under Quality Standard — not repeated here.
20
21**Never:** add filler or repeated instructions · invent unnecessary personas · overload with irrelevant background · apply a technique reflexively without matching it to the task · patch symptoms ("be more professional") instead of the actual defect · optimize for one impressive draft over consistency across runs.
22
23---
24
25## Workflow
26
27### 1. Extract & analyze intent
28Identify what's explicitly asked, the underlying problem being solved, the downstream purpose of the output, success criteria, audience, and target model (if known). Determine hidden assumptions, missing requirements, and information that exists only in the user's head. Look past the literal wording, faithful to actual intent. Name the current prompt's specific defect if one exists — ambiguity, missing output contract, conflicting constraints, wrong technique for the shape — never a vague "make it better." If a prompt already works and fails in specific, isolated cases, that's debugging, not a rewrite: find the root cause and make the smallest edit that fixes it — a full rewrite reintroduces untested risk into what already worked. Reserve full rewrites for structural defects.
29
This is a preview of SKILL.md. Download or install the skill to get the whole thing.
In the file
SKILL.md2,184 words
Files2
Licencenot declared
Why you can read it

Nothing in a skill executes. The client loads the text and the model follows it, so a skill can be audited the way a runbook is — by reading it.

What it costs in context

Skills are not billed by the call. They are paid for in context: every token the instructions occupy is a token your code, your diff and your conversation cannot use. Here is what this one takes and when it takes it.

≈230
always loaded
The name and description, so the model knows the skill exists and when to reach for it.
3,795
on trigger
The instruction body and 1 supporting file, read only when the skill fires.
2.0%
of a 200k window
Ten skills this size would take about 20% of the window before you open a file.
050k100k150k200k context window

4k tokens, estimated from the bundle at four bytes to the token, held for the rest of the session once it triggers. Heavy. Teams tend to install this one per project rather than globally, and load it only when the job comes up.

Servers bill, skills cost

A server charges by the month. A skill charges once per session, in context, and then keeps charging it for as long as the session lives.

Before and after

The same question, put to the same model twice: once as it comes, and once with these instructions loaded.

No worked example has been published for this skill yet.

The procedure it runs

The procedure has not been set out here step by step. It is in the body of its SKILL.md: the start of it is shown above, and the whole file comes with the install.

Prose, not code

These steps are written for a model to follow, not executed by a runtime. It can still be told to skip one, and it will say so when it does.

Servers it uses

None. This skill calls no MCP servers at all.

Everything it needs is in the instructions, so it works in a project with nothing connected — the model reads the file and changes how it works with what it can already reach.

Its SKILL.md does not declare which tools it asks the agent for, so what it touches is whatever the instructions themselves ask for — read them before you install it.

What it asks for
Writes filesnot declared
Network accessnot declared

This SKILL.md carries no allowed-tools line, so neither is declared. A skill grants no permissions of its own — it can only ask for tools your client already has.

What it will not do

Every skill is narrow, and the useful ones say where they stop. These are the jobs this one is the wrong tool for.

What this skill is not for has not been published here. Nothing is implied by that: it is a section the author has not filled in.

What is in the bundle

2 files, 16.1 kB on disk. A bundle is text throughout: the instructions the model reads, plus the templates it fills in.

  • SKILL.md15.0 kB
  • README.md1.1 kB
What is not in it

No dependencies and nothing executable: a skill is text the agent reads, so the bundle is 2 files you can review in full before installing.

Install

Installing copies the bundle into your project. Nothing runs at install time — the files sit on disk until the model reads them.

# The Prompt Architect · 4k tokens when loaded · macOS, Linux mkdir -p .claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/the-prompt-architect/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/the-prompt-architect" ] && { [ ! -e .claude/skills/the-prompt-architect ] || { mv .claude/skills/the-prompt-architect "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/the-prompt-architect" .claude/skills/ && echo "Installed .claude/skills/the-prompt-architect"
On Windows, or any OS with Node 20+
npx mcprush@latest skill add mudassar-khann/the-prompt-architect

Windows PowerShell says 'running scripts is disabled on this system'? Run Set-ExecutionPolicy -Scope CurrentUser RemoteSigned once, or type npx.cmd instead of npx (codex.cmd, gemini.cmd, grok.cmd likewise). PowerShell 7 needs neither. Writes to .claude/skills/the-prompt-architect/ in the current project. For every project instead, run mkdir -p ~/.claude/skills && t=$(mktemp -d) && curl -fsSL -o "$t/bundle.tar.gz" https://mcprush.com/api/skills/the-prompt-architect/bundle.tar.gz && tar -xzf "$t/bundle.tar.gz" -C "$t" && [ -d "$t/the-prompt-architect" ] && { [ ! -e ~/.claude/skills/the-prompt-architect ] || { mv ~/.claude/skills/the-prompt-architect "$t/.previous" && echo "Previous copy moved to $t/.previous"; }; } && mv "$t/the-prompt-architect" ~/.claude/skills/ && echo "Installed ~/.claude/skills/the-prompt-architect" (macOS, Linux) — or add --global to the npx line. The curl line replaces .claude/skills/the-prompt-architect/ only after the download succeeds, so files left there by another skill of the same name, or by an older release, do not mix in. A copy already there is moved aside, not deleted, and the line prints where. It appears as prompt-engineer in Gemini CLI, Codex, Copilot and Grok (its own name); Claude Code lists it by the folder name, the-prompt-architect.

Which clients pick it up on their own

A skill is a folder of text. Most of these read a skills folder and pick it up without being told; the rest take the same folder another way — an upload in the app, a parameter on an API call — and then choose it by its description just the same.

Claude Code.claude/skills/
Claude DesktopCustomize › Skills
ChatGPTSkills › Create › Upload
Cursor.cursor/skills/
VS Code.github/skills/
Codex CLI.agents/skills/
Gemini CLI.gemini/skills/
Grok Build.grok/skills/
Microsoft CopilotSkills › Upload a skill
PerplexityComputer › Skills › Upload a skill
DeepSeek Harness.dsh/skills/
Zed.agents/skills/
Devin Desktop.devin/skills/
Windsurf (legacy).windsurf/skills/
OpenAI Agents SDKInstructions or sandbox Skills
HTTP / APIa request parameter
This release
Version3.5
Publishedno release date on file
PriceFree
Referencemudassar-khann/the-prompt-architect

Versions

v3.5 is what is on the shelf; no release here carries a date. Instructions change more often than APIs do — a skill can be rewritten entirely without anything it depends on moving.

v3.5
  • No earlier releases have been published to the marketplace.
Pinning

The install command always fetches the release that is current the day you run it — v3.5 today — and cannot ask for an earlier one. The copy on your disk does not change until you run it again.

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