Dependency-free local MCP server over stdio with a single echo tool, for testing client configuration.
A local Model Context Protocol server in one file with no dependencies. It exposes one tool,
echo, which returns the text it receives. Use it to check that an MCP client is configured
correctly before connecting real servers.
This listing is not a hosted service. The server runs on your machine, started by your MCP client. It makes no network requests and does not touch the filesystem.
Node.js 18 or later.
Download and extract the release, then point your client at server.mjs:
skills download @spboucher/echo-mcp-server --extract ./echo-mcp-server
Claude Code:
claude mcp add --transport stdio echo-mcp-server -- node /absolute/path/to/echo-mcp-server/server.mjs
Codex (~/.codex/config.toml):
[mcp_servers.echo-mcp-server]
command = "node"
args = ["/absolute/path/to/echo-mcp-server/server.mjs"]
Cursor (.cursor/mcp.json):
{ "mcpServers": { "echo-mcp-server": { "type": "stdio", "command": "node", "args": ["/absolute/path/to/echo-mcp-server/server.mjs"] } } }
| Name | Input | Output |
|---|---|---|
echo | { "text": string } | One text content block containing the same string |
initialize, ping, tools/list, tools/call. Notifications are accepted and ignored.initialize: 2025-06-18, 2025-03-26, 2024-11-05. A client
that requests another revision is offered 2025-06-18.printf '%s\n' '{"jsonrpc":"2.0","id":1,"method":"initialize","params":{"protocolVersion":"2025-06-18","capabilities":{},"clientInfo":{"name":"manual","version":"0"}}}' '{"jsonrpc":"2.0","id":2,"method":"tools/call","params":{"name":"echo","arguments":{"text":"hello"}}}' | node server.mjs
1Register the local server
claude mcp add --transport stdio echo-mcp-server -- node server.mjs2Optional: download the listing's source archive for review
skills download @spboucher/echo-mcp-server@1.0.0{
"mcpServers": {
"echo-mcp-server": {
"command": "node",
"args": [
"server.mjs"
]
}
}
}Installing only copies or configures. Nothing is executed for you. The Skills CLI verifies the checksum before writing files.
Select a file to preview it. Files are shown as plain text and never executed.
The publisher declared no permissions. This is a claim, not a guarantee.
No advisory findings from static-1.0.0 on Nov 10, 2026. 2 informational notes.
Static checks are advisory. They never certify that a package is safe. Compatibility entries are publisher claims unless marked verified.
| Version | Published | Size | SHA-256 | State |
|---|---|---|---|---|
| 1.0.0latest | Nov 10, 2026 | 3.0 kB | 5c5faf636e1a… | published |
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