drift: Skill for Claude Code

.github/skills/drift-agent-prompt-authoring/SKILL.md

drift-agent-prompt-authoring is a skill for Claude Code from mick-gsk/drift. It costs 115 tokens per session (2,014 once invoked), scanned A, original, MIT.

A workflow for writing and improving agent prompts stored in a Drift repository. It covers prompt structure, evaluation, shared sections, and project policy.

In plain words
What is it for?
Use it when creating or revising prompt files, evaluation prompts, field-test prompts, front matter, workflow phases, or report formats in .github/prompts/.
Why use it?
It reduces inconsistent prompts and helps ensure that each prompt produces a useful observation, file, or decision. It also separates prompts used internally from those used for external testing.

Skill for Claude Code

Written for Claude Code: argument-hint in frontmatter. Also seen: mentions AGENTS.md.

This is mick-gsk/drift's own configuration. It tells Claude Code how to work on drift itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything drift configures →

Part of the drift plugin — 31 skills, 17 agents shipped together

Reuse

Borrowing it

Nothing to install: this file belongs to mick-gsk/drift. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/mick-gsk/drift/main/.github/skills/drift-agent-prompt-authoring/SKILL.md
Clone the repo
git clone --depth 1 https://github.com/mick-gsk/drift

Made for: Claude Code.

Or install drift, the plugin that ships this one along with the rest of its 31 skills, 17 agents.

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 drift-agent-prompt-authoring

README.md
[![agentmods](https://agentmods.dev/badge/skills/mick-gsk/drift/drift-agent-prompt-authoring/github.svg)](https://agentmods.dev/skills/mick-gsk/drift/drift-agent-prompt-authoring)
Your own site
<a href="https://agentmods.dev/skills/mick-gsk/drift/drift-agent-prompt-authoring"><img src="https://agentmods.dev/badge/skills/mick-gsk/drift/drift-agent-prompt-authoring/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 drift-agent-prompt-authoring

Your own site · 80×15
<a href="https://agentmods.dev/skills/mick-gsk/drift/drift-agent-prompt-authoring"><img src="https://agentmods.dev/badge/skills/mick-gsk/drift/drift-agent-prompt-authoring.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 115 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 2,014 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 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 5.1 $0.00115 $0.02014
Opus 5 $0.00057 $0.01007
Sonnet 5 $0.00023 $0.00403
Haiku 4.5 $0.00012 $0.00201

Measured 12d ago against content hash a14c518a715c, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-12, from the pricing page.

Security

Grade A, and why

drift-agent-prompt-authoring 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 12d 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.

.github/skills/drift-agent-prompt-authoring/SKILL.md · 193 lines

How it starts

The opening of the file, as written. The whole thing — 193 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Drift Skill Für Agent-Prompt-Authoring

Verwende diesen Skill, wenn du einen Drift-Prompt unter .github/prompts/ neu schreibst oder überarbeitest.

Wann Verwenden

  • Ein neuer Evaluierungs- oder Workflow-Prompt wird benötigt
  • Eine bestehende .prompt.md-Datei soll geschärft oder neu strukturiert werden
  • Ein Prompt muss zwischen interner Drift-Nutzung und externem Field-Test sauber getrennt werden
  • Frontmatter, Phasen, Artefakte oder Report-Struktur eines Prompts sollen standardisiert werden

Kernregeln

  1. Zuerst das Drift Policy Gate ausführen. Ein gut formulierter Prompt für unzulässige Arbeit bleibt unzulässig.
  2. Prompts sind modellunabhängig und auf Deutsch. Keine Modellversions-Annahmen oder englische Prompt-Standards einführen.
  3. Shared Partials wiederverwenden statt Konventionen zu duplizieren. Taxonomie, Issue-Filing und Grundkonventionen haben jeweils eine Single Source of Truth.
  4. Ein Drift-Prompt muss Erkenntnis erzeugen, nicht Dekoration. Jede Phase soll zu Beobachtung, Artefakt oder Entscheidung führen.
  5. Vor dem Schreiben die richtige Prompt-Klasse wählen. Interne Prompts und Field-Test-Prompts folgen unterschiedlichen Freshness- und Filing-Regeln.

Schritt 0: Drift Policy Gate Ausführen

Vor dem Drafting des Prompts das verpflichtende Gate aus .github/instructions/drift-policy.instructions.md verwenden.

Schritt 1: Prompt-Scope Festlegen

Zuerst entscheiden, zu welcher Prompt-Familie der neue Prompt gehört:

  • Interner Drift-Prompt unter .github/prompts/ verwenden, wenn der Prompt den Drift-Workspace, die Drift-CLI oder Drift-interne Entwicklungsworkflows bewertet
  • Field-Test-Prompt unter .github/prompts/field-tests/ verwenden, wenn der Prompt Drift gegen beliebige externe Repositories testet

Faustregel fuer die Primitive-Wahl:

  • Instruction-Datei, wenn die Regel immer gelten und automatisch angewendet werden soll
  • Skill, wenn ein wiederverwendbarer Operator-Workflow on-demand geladen werden soll
  • Prompt, wenn ein konkreter mehrphasiger Arbeitsablauf mit Ziel, Artefakten und Bewertung ausgefuehrt werden soll

Read the full file on GitHub · 193 lines

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. 12d ago First seen · 193 lines · 115 tokens per session scan A a14c518a715c

Subscribe to this mod's changes

drift-agent-prompt-authoring is a skill published in the GitHub repository mick-gsk/drift (15 stars, last pushed 1mo ago), licensed MIT. It adds 115 tokens to every session and 2,014 once invoked, about $0.0006 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.

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