simple-fetch
A demonstration skill showing the CLI-to-MCP call pattern by fetching URL content.
Install
mkdir -p .claude/skills/simple-fetch && curl -L -o skill.zip "https://agentskills.codes/api/skills/download/71" && unzip -o skill.zip -d .claude/skills/simple-fetch && rm skill.zipInstalls to .claude/skills/simple-fetch
Activation
This is the description your AI agent reads to decide when to run this skill — the better it matches your request, the more reliably it fires.
Basic MCP skill demonstrating CLI-based execution pattern for fetching URL contentKey capabilities
- →Accept CLI arguments for URL targeting
- →Execute MCP fetch tool calls
- →Return fetched content and byte count
How it works
The script acts as a CLI wrapper that passes a URL argument to an MCP fetch tool, returning the retrieved content to the user.
Inputs & outputs
When to use simple-fetch
- →Testing MCP skill patterns
- →Fetching webpage content for analysis
- →Learning how to structure a custom CLI skill
- →Debugging MCP tool execution
About this skill
Simple Fetch Skill
When to Use This Skill
Use this Skill to:
- Learn the basic skill pattern
- Fetch content from a URL
- Use as a template for creating custom skills
This is a demonstration skill showing the minimal CLI-based pattern.
What This Skill Does
Demonstrates the core skill pattern:
- Accept CLI arguments (--url)
- Call an MCP tool (fetch__fetch)
- Return result
Instructions
When you need to fetch content from a URL, execute:
cd /home/khitomer/Projects/mcp-code-execution-enhanced
uv run python -m runtime.harness scripts/simple_fetch.py \
--url "https://example.com"
Parameters
--url: The URL to fetch (required)
Example Usage
# Fetch a webpage
uv run python -m runtime.harness scripts/simple_fetch.py \
--url "https://docs.example.com/api"
# Fetch documentation
uv run python -m runtime.harness scripts/simple_fetch.py \
--url "https://github.com/owner/repo/README.md"
Expected Output
The skill returns the fetched content and prints:
- Success message with byte count
- Or error message if fetch fails
MCP Servers Required
Configure a fetch-capable MCP server in mcp_config.json:
{
"mcpServers": {
"fetch": {
"type": "stdio",
"command": "uvx",
"args": ["mcp-server-fetch"]
}
}
}
Technical Notes
- Pattern: CLI args → MCP call → Result
- Token cost: ~110 tokens (discover + read + execute)
- Time: <10 seconds
- Immutable: Parameters via CLI, no file editing needed
This skill demonstrates the foundation for creating more complex MCP workflows.
When not to use it
- →When complex authentication or session management is required
Prerequisites
Limitations
- →Limited to simple GET requests
- →Requires pre-configured MCP server
How it compares
This provides a standardized CLI pattern for MCP interaction rather than writing custom fetch logic for every new tool.
Compared to similar skills
simple-fetch side by side with the closest alternatives in the catalog.
| Skill | Installs | Updated | Safety | Difficulty |
|---|---|---|---|---|
| simple-fetch (this skill) | 11 | 8mo | Review | Beginner |
| dev-browser | 53 | 4mo | Review | Intermediate |
| agent-browser | 30 | 3mo | Review | Intermediate |
| browser-tools | 6 | 9mo | Review | Intermediate |
Try saying
Example prompts that trigger this skill in your AI assistant.
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