# message-injector

> message-injector — harukaon-message-injector. Use this tool when you need to modify user input for AI agents, such as adding context or disclaimers to user messages. The message-injector plugin solves problems like lacking user input context by prepending custom text to every message. It takes custom text as input and outputs modified user messages, ideal for use cases requiring standardized or contextualized user input.

Canonical page: https://skillsregistry.net/skills/harukaon-message-injector  
JSON: https://api.skillsregistry.net/v1/skills/harukaon-message-injector

## Description

OpenClaw plugin that prepends custom text to every user message before it reaches the agent.

## Trust

- **Trust score (0–1):** 0.30
- **Verification tier:** unverified
- **Last scanned:** 2026-08-24

## Facts

- **Version:** 1.0.0
- **Skill type:** atomic
- **Execution layer:** instructions
- **Runtime environment:** llm
- **Category:** other
- **Updated:** 2026-09-13

## Source

- **Source listing:** [ClawHub](https://clawskills.sh/skills/harukaon-message-injector)

## Use it

Resolve this record through the SkillsRegistry MCP server (no auth, read-only):

```
claude mcp add --transport http --scope user skillsregistry https://api.skillsregistry.net/mcp
```

```json
{
  "jsonrpc": "2.0",
  "id": 1,
  "method": "tools/call",
  "params": {
    "name": "get_skill",
    "arguments": {
      "slug": "harukaon-message-injector"
    }
  }
}
```

REST: `GET https://api.skillsregistry.net/v1/skills/harukaon-message-injector` · pull for local use: `GET https://api.skillsregistry.net/v1/skills/harukaon-message-injector/pull`

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SkillsRegistry indexes agent skills from public registries and GitHub. Skills we have analysed are scanned with Circle-IR and scored on six dimensions; each listing states its scan coverage. More: https://skillsregistry.net/llms.txt