@yawlabs/ssh-mcp

npm install -g @yawlabs/ssh-mcp

{
 "mcpServers": {
 "ssh": {
 "command": "ssh-mcp"
 }
 }
}

Agent calls ssh_git_check → "Permission denied. Your SSH key is not registered with github.com."
Agent calls ssh_key_list → finds id_ed25519 exists but is not loaded
Agent calls ssh_key_load("~/.ssh/id_ed25519") → "Key loaded"
Agent calls ssh_git_check → "Git SSH authentication to github.com succeeded as username"
Agent runs git pull → works

Agent calls ssh_exec on server → error: "Host key verification failed"
 (auto-diagnostics included in error: "Fix with ssh_known_hosts_fix")
Agent calls ssh_known_hosts_fix("my-server") → "Host key refreshed"
Agent calls ssh_exec → works

Agent calls ssh_test("new-server") → "Connection refused at new-server:22"
Agent calls ssh_diagnose("new-server") → full report showing agent running, keys loaded, but host unreachable
Agent reports: "SSH server isn't running on new-server or port 22 is blocked"

import { connect, exec, diagnose, ensureAgent, listSshKeys, checkGitSsh, ConnectionPool } from '@yawlabs/ssh-mcp';

// Fix SSH environment
const agent = ensureAgent();
console.log(agent.message);

// Check git access
const git = checkGitSsh('github.com');
console.log(git.message);

// List available keys
const keys = listSshKeys();
for (const key of keys) {
 console.log(`${key.name} (${key.type}) - ${key.loadedInAgent ? 'loaded' : 'not loaded'}`);
}

// Run a remote command (one-off)
const client = await connect({ host: 'my-server', username: 'deploy' });
const result = await exec(client, 'uptime');
console.log(result.stdout);
client.end();

// Run multiple commands with connection pooling
const pool = new ConnectionPool();
await pool.withConnection({ host: 'my-server' }, async (client) => {
 const r1 = await exec(client, 'uptime');
 console.log(r1.stdout);
});
// Connection stays open for 60s — next call reuses it
await pool.withConnection({ host: 'my-server' }, async (client) => {
 const r2 = await exec(client, 'df -h');
 console.log(r2.stdout);
});
pool.drain(); // close all connections when done

// Diagnose issues
const report = diagnose('my-server');
console.log(report.overall); // "ok" | "warning" | "error"
for (const check of report.checks) {
 console.log(`[${check.status}] ${check.name}: ${check.message}`);
}

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