# Hello World Echo

> Hello world plugin implementation

- **Type:** Skill
- **Install:** `agentstack add skill-opendatahub-io-ai-helpers-hello-world-echo`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [opendatahub-io](https://agentstack.voostack.com/s/opendatahub-io)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** Apache-2.0
- **Upstream author:** [opendatahub-io](https://github.com/opendatahub-io)
- **Source:** https://github.com/opendatahub-io/ai-helpers/tree/main/helpers/skills/hello-world-echo
- **Website:** https://opendatahub-io.github.io/ai-helpers/

## Install

```sh
agentstack add skill-opendatahub-io-ai-helpers-hello-world-echo
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

## Name
odh-ai-helpers:hello-world-echo

## Synopsis
```
/hello-world:echo [name]
```

## Description
The `hello-world:echo` command prints a greeting message to the console. By default, it prints "Hello world", but when provided with a name argument `hello-world:echo $1`, it prints "Hello ${1}". This command serves as a basic example of a Claude Code plugin implementation, demonstrating the minimal structure required for a functional plugin command.

It provides a reference implementation for plugin developers. It demonstrates:
- Basic command structure
- Shell command execution within a plugin
- Handling arguments
- Minimal configuration requirements

The spec sections is inspired by https://man7.org/linux/man-pages/man7/man-pages.7.html#top_of_page

## Implementation
- The command executes a simple bash `echo` statement
- Accepts an optional name argument (`$1`)
- If `$1` is provided, outputs "Hello $1"
- If no argument is provided, outputs "Hello world"
- Output is sent directly to standard output
- The command is stateless and has no side effects

## Examples

1. **Basic usage (no arguments)**:
   ```
   /hello-world:echo
   ```
   Output:
   ```
   Hello world
   ```

2. **With a name argument**:
   ```
   /hello-world:echo Alice
   ```
   Output:
   ```
   Hello Alice
   ```

3. **With multiple words as name**:
   ```
   /hello-world:echo "John Doe"
   ```
   Output:
   ```
   Hello John Doe
   ```

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [opendatahub-io](https://github.com/opendatahub-io)
- **Source:** [opendatahub-io/ai-helpers](https://github.com/opendatahub-io/ai-helpers)
- **License:** Apache-2.0
- **Homepage:** https://opendatahub-io.github.io/ai-helpers/

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-opendatahub-io-ai-helpers-hello-world-echo
- Seller: https://agentstack.voostack.com/s/opendatahub-io
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.