MCP Fetch Server
Fetches URLs from the internet and converts web content to markdown format for easier LLM analysis. Supports chunked reading, raw HTML extraction, and content length control.
Version: 2025.4.7 (locked 2026-01-20)
Tools
| Tool | Description |
|---|---|
| fetch | Fetches a URL from the internet and optionally extracts its contents as markdown |
⚠️ Always check tools/ for exact parameter names before calling.
Prompts
| Prompt | Description |
|---|---|
| fetch | Fetch a URL and extract its contents as markdown |
See prompts.md for details.
Usage
Quick Start
⚠️ Before calling any tool, read its documentation in tools/ to get the exact parameter names.
bash
# List available tools and their schemas node ./scripts/mcp-caller.mjs list # Then check tools/<tool-name>.md for parameter details
CLI (Single Call)
Run from this skill directory:
bash
node ./scripts/mcp-caller.mjs call <tool> '<json-args>' node ./scripts/mcp-caller.mjs resource <uri> node ./scripts/mcp-caller.mjs prompt <name> '<json-args>' node ./scripts/mcp-caller.mjs list
Example:
bash
node ./scripts/mcp-caller.mjs call fetch '{"url": "https://example.com"}'
Programmatic (Batch/Parallel)
For batch operations or complex logic, use the API module:
javascript
// example.mjs - Run from this skill directory
import { callTool, listTools } from './scripts/api.mjs';
// First, check available tools and their schemas
const tools = await listTools();
console.log(tools.map(t => ({ name: t.name, params: Object.keys(t.inputSchema?.properties || {}) })));
// Then call with correct parameters (see tools/*.md for details)
const result = await callTool('toolName', { /* check tools/toolName.md for params */ });
// Parallel calls
const results = await Promise.all([
callTool('tool1', { /* params from tools/tool1.md */ }),
callTool('tool2', { /* params from tools/tool2.md */ }),
]);
console.log(JSON.stringify(results, null, 2));
Available API functions:
- •
callTool(name, args)- Call a tool - •
listTools()- List available tools (includes inputSchema with parameter info) - •
readResource(uri)- Read a resource - •
listResources()- List resources - •
getPrompt(name, args)- Get a prompt - •
listPrompts()- List prompts - •
close()- Close connection (optional cleanup)
Error Handling
If a tool call fails (e.g., "method not found", parameter changes):
- •Try to complete the task using other available tools
- •Inform user: "This skill may be outdated - MCP server API has changed"
- •User needs to run mcp-skill-generator to update this skill
Do not retry failed calls repeatedly - prioritize finding alternatives.
Updating
To update this skill with newer MCP server version:
- •Run mcp-skill-generator
- •Provide this skill's path for update