A high-efficiency context management skill that injects dynamic data into AI sessions as attachments rather than system prompt modifications.
Install & Download
1. ClawHub CLI
The fastest way to install a skill directly from the registry.
npx clawhub@latest install attachment-inject
2. Manual Installation
Copy the skill folder to one of these locations
~/.openclaw/skills/ <project>/skills/ Priority: Workspace > Local > Bundled
3. Prompt Installation
Copy this prompt to OpenClaw to install it automatically.
Help me install attachment-inject using Clawhub. If Clawhub is not installed, install it first (npm i -g clawhub).
Prefer to download?
Get the raw skill files in a ZIP archive.
What is Attachment Inject?
Attachment Inject is a specialized utility designed to optimize how AI agents handle large sets of dynamic data. Inspired by the Claude Code architecture, this skill allows developers to inject dynamic content—like skill registries or agent descriptions—into the conversation flow as message attachments. By moving this data out of the system prompt, it ensures that your Openclaw Skills benefit from better prompt caching and significantly lower token overhead.
This approach solves the problem of static, bloated system prompts that become expensive and slow as more capabilities are added. Instead of hardcoding every possible skill into the initial instruction, Attachment Inject enables a modular architecture where detailed information is only provided to the AI when specifically needed for the current task.
Attachment Inject Use Cases
- Managing large libraries of Openclaw Skills without hitting token limits.
- Maintaining high performance in long-running AI sessions by preserving prompt cache.
- Dynamically routing user requests to specialized sub-agents based on lightweight registries.
- Automating the generation of documentation indexes for complex AI environments.
How Attachment Inject Works
- The skill identifies dynamic placeholders within the agent configuration files using specialized injection tags.
- It executes background scripts to generate lightweight registries consisting of names and one-line descriptions.
- These registries are injected into the session as message attachments to provide the AI with a high-level overview of available tools.
- When a specific task is identified, the system performs an on-demand read of the full SKILL.md file to provide the AI with exact execution instructions only when necessary.
Attachment Inject Setup
To set up dynamic registries for your environment, you can use a bash script to crawl your Openclaw Skills directories and generate an index:
# Generate a skills registry
for dir in skills/*/; do
name=$(basename "$dir")
desc=$(grep "^description:" "$dir/SKILL.md" 2>/dev/null | head -1 | sed 's/description: *//' | cut -c1-60)
echo "| $name | $desc |"
done
Attachment Inject Data Schema & Taxonomy
The skill organizes information into a tiered hierarchy to maximize context efficiency:
| Level | Data Type | Implementation |
|---|---|---|
| Registry | Metadata Index | Lightweight Markdown tables (typically < 500 tokens) |
| Injection | Dynamic Placeholders | HTML-style comment tags (e.g., <!-- INJECT:SKILLS_REGISTRY -->) |
| On-Demand | Full Specifications | Full markdown content loaded via filesystem read tools when triggered |
| Core Context | Static Essentials | Top-tier descriptions for mission-critical functions |
Attachment Inject Advanced Features
- Automatic registry synchronization via CLI hooks to keep the index up-to-date.
- Support for multi-agent dispatching using lightweight registry lookup tables.
- Intelligent context compression for session-long memory summaries.
- Seamless integration with the broader Openclaw Skills ecosystem for modular AI development.
SKILL.md
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