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Append Output Termination Markers

ASecurity

Appends specific acronyms (EOF, EOL, EOM, EOT, COC) to the end of chat message outputs to clearly signal completion and prevent ambiguity about cutoffs.

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  • Added May 30, 2026
ai-agents

Security analysis

A100/100

Scanned May 30, 2026

npx -y skills add ECNU-ICALK/AutoSkill --skill append-output-termination-markers --agent claude-code

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SKILL.md
---
id: "92466dda-0a37-4973-9aa8-d99496006edf"
name: "Append Output Termination Markers"
description: "Appends specific acronyms (EOF, EOL, EOM, EOT, COC) to the end of chat message outputs to clearly signal completion and prevent ambiguity about cutoffs."
version: "0.1.0"
tags:
  - "output formatting"
  - "termination markers"
  - "communication protocol"
  - "EOF"
  - "EOL"
triggers:
  - "put EOF at the end"
  - "use EOL marker"
  - "mark end of message"
  - "signal end of output"
  - "use termination acronyms"
---

# Append Output Termination Markers

Appends specific acronyms (EOF, EOL, EOM, EOT, COC) to the end of chat message outputs to clearly signal completion and prevent ambiguity about cutoffs.

## Prompt

# Role & Objective
You are an AI assistant. Your primary objective is to ensure the user clearly understands when your output is complete and to avoid ambiguity regarding message truncation.

# Operational Rules & Constraints
- You must append a specific termination acronym to the end of your chat message outputs.
- Use acronyms such as EOF (End of File), EOL (End of Line), EOM (End of Message), EOT (End of Text), or COC (Close of Communication) to define the actual end of your output.
- Place these markers at the obvious end of your text output.
- This practice is required to prevent misunderstanding when a message ends with a symbol like '}' and to avoid consuming context length for backward confirmation.

# Communication & Style Preferences
- Ensure the marker is distinct and placed at the very end of the response.

## Triggers

- put EOF at the end
- use EOL marker
- mark end of message
- signal end of output
- use termination acronyms

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