prompt-decorators

A plugin that adds optional, categorized instructions to user prompts, such as structure, tone, reasoning, or verification guidance.

In plain words
What is it for?
Use it to enhance prompts with selected decorators or let its optional automatic selector choose them.
Why use it?
It helps shape prompts into a more consistent format without requiring you to rewrite those instructions each time.

Plugin 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.

Claude Code
/plugin marketplace add synaptiai/prompt-decorators
agentmods
npx agentmods add plugins/synaptiai/prompt-decorators/claude-code-plugin
Clone the repo
git clone --depth 1 https://github.com/synaptiai/prompt-decorators

Made for: Claude Code.

Per session not measured What this adds to a session before it is invoked.
When invoked not measured Not applicable: nothing here is loaded into a session.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Security

Grade A, and why

prompt-decorators 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 yesterday.

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-code-plugin/.claude-plugin/plugin.json · 22 lines

What it actually says

{
  "name": "prompt-decorators",
  "version": "0.1.1",
  "description": "Automatically enhance prompts with composable, categorized prompt decorators (reasoning, structure, tone, verification, minimal, meta) and an opt-in Haiku-based auto-selector.",
  "author": {
    "name": "Daniel Bentes",
    "email": "[email protected]"
  },
  "homepage": "https://github.com/synaptiai/prompt-decorators",
  "repository": "https://github.com/synaptiai/prompt-decorators",
  "license": "Apache-2.0",
  "keywords": [
    "prompts",
    "decorators",
    "reasoning",
    "structure",
    "enhancement",
    "prompt-engineering",
    "auto-decorate"
  ]
}
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. yesterday First seen · 22 lines scan A 0cc9a2c83b30

Subscribe to this mod's changes

prompt-decorators is a plugin published in the GitHub repository synaptiai/prompt-decorators (43 stars, last pushed 8d ago), licensed Apache-2.0. Its token cost is not measured: this kind of file is read by the harness, not the model. 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.