What does the Mid Server AI skill do?

Communicate with ServiceNow MID Servers via the ECC queue — send Command/JSProbe/PowerShell/SSHCommand payloads to ecc_agent, build custom probes/sensors, and monitor MID health on ecc_agent.

Why use Mid Server on TypingMind?

Because you install it once and use it with any model. Mid Server is plain Markdown rather than provider-specific code, so the same skill runs on GPT-5, Claude, Gemini, Grok, or a local model — and you can switch model mid-chat without it breaking. TypingMind runs on your own API keys, so you pay providers directly instead of a per-seat subscription, and your skills and chats stay in your own storage.

How do I install Mid Server in TypingMind?

Open Plugins → Skills → Install from GitHub in TypingMind and paste https://github.com/serac-labs/serac/tree/main/packages/skills/mid-server. TypingMind reads its SKILL.md and installs it as a skill you can enable per chat.

Which AI models can use Mid Server?

Any model you connect in TypingMind. AI skills are plain Markdown instructions rather than provider-specific code, so GPT, Claude, Gemini, Grok, and local models can all load this skill when a request matches it.

How many AI models can I use with Mid Server?

As many as you like. As long as a model supports skills, you can use Mid Server with it — GPT, Claude, Gemini, Grok, DeepSeek, Mistral, Llama and more — all on TypingMind with your own API keys.

Is the Mid Server AI skill free?

Yes. It is published on GitHub by serac-labs under the Apache-2.0 license. You only pay your own AI provider for the tokens you use.

An AI skill is a reusable instruction bundle that teaches an AI model how to do one specific task. It follows the open Agent Skills format: a SKILL.md file with a name and description, plus any scripts, templates or reference files the model may need. The model reads the instructions only when your request matches the skill, so an installed skill costs nothing until it is used.

How are AI skills different from plugins or MCP servers?

A plugin or MCP server gives a model new tools to call — code that runs somewhere and returns a result. An AI skill gives the model knowledge and process instead: how to approach a task, which steps to follow, what good output looks like. Skills are plain Markdown, so they need no server, no API key and no runtime, and they work with any model.

Mid Server by serac-labs — AI Skill for Any LLM

MID Server for ServiceNow

MID Server enables ServiceNow to communicate with resources inside your network.

MID Server Architecture


ServiceNow Instance
    ↓ ECC Queue
MID Server
    ├── Probes (Outbound)
    │   └── Commands sent TO MID
    ├── Sensors (Inbound)
    │   └── Results sent FROM MID
    └── Script Execution

Key Tables

Table	Purpose
`ecc_agent`	MID Server records
`ecc_queue`	Input/Output queue
`discovery_probes`	Probe definitions
`discovery_sensors`	Sensor definitions
`sys_script_execution`	Script execution requests

ECC Queue Communication (ES5)

Send Command to MID Server

javascript
// Send command via ECC queue (ES5 ONLY!)
function sendMIDCommand(midServerName, command, parameters) {
  var mid = getMIDServer(midServerName)
  if (!mid) {
    gs.error("MID Server not found: " + midServerName)
    return null
  }

  var ecc = new GlideRecord("ecc_queue")
  ecc.initialize()

  // ECC Queue settings
  ecc.setValue("agent", mid.getUniqueValue())
  ecc.setValue("topic", "Command")
  ecc.setValue("name", command)
  ecc.setValue("source", "CustomScript")

  // Parameters as payload
  ecc.setValue("payload", buildPayload(parameters))

  // Direction: output = to MID, input = from MID
  ecc.setValue("queue", "output")

  // State
  ecc.setValue("state", "ready")

  return ecc.insert()
}

function getMIDServer(name) {
  var mid = new GlideRecord("ecc_agent")
  mid.addQuery("name", name)
  mid.addQuery("status", "Up")
  mid.query()
  if (mid.next()) {
    return mid
  }
  return null
}

function buildPayload(params) {
  var xml = '<?xml version="1.0" encoding="UTF-8"?>'
  xml += "<parameters>"
  for (var key in params) {
    if (params.hasOwnProperty(key)) {
      xml += '<parameter name="' + key + '">'
      xml += "<value>" + escapeXML(params[key]) + "</value>"
      xml += "</parameter>"
    }
  }
  xml += "</parameters>"
  return xml
}

function escapeXML(str) {
  return str
    .replace(/&/g, "&amp;")
    .replace(/</g, "&lt;")
    .replace(/>/g, "&gt;")
    .replace(/"/g, "&quot;")
    .replace(/'/g, "&apos;")
}

Monitor ECC Response

javascript
// Wait for ECC queue response (ES5 ONLY!)
function waitForECCResponse(eccSysId, timeoutSeconds) {
  var startTime = new Date().getTime()
  var timeout = timeoutSeconds * 1000

  while (true) {
    // Check for response
    var response = new GlideRecord("ecc_queue")
    response.addQuery("response_to", eccSysId)
    response.addQuery("queue", "input")
    response.query()

    if (response.next()) {
      return {
        success: response.getValue("state") === "processed",
        payload: response.getValue("payload"),
        error: response.getValue("error_string"),
      }
    }

    // Check timeout
    if (new Date().getTime() - startTime > timeout) {
      return {
        success: false,
        error: "Timeout waiting for MID response",
      }
    }

    // Wait before retry
    gs.sleep(1000)
  }
}

MID Server Scripts (ES5)

Execute Script on MID

javascript
// Execute JavaScript on MID Server (ES5 ONLY!)
function executeMIDScript(midServerName, script) {
  var mid = getMIDServer(midServerName)
  if (!mid) {
    return { success: false, error: "MID Server not found" }
  }

  var ecc = new GlideRecord("ecc_queue")
  ecc.initialize()
  ecc.setValue("agent", mid.getUniqueValue())
  ecc.setValue("topic", "JSProbe")
  ecc.setValue("name", "Custom Script Execution")

  // Script payload
  var payload = '<?xml version="1.0" encoding="UTF-8"?>'
  payload += "<parameters>"
  payload += '<parameter name="script"><value><![CDATA[' + script + "]]></value></parameter>"
  payload += "</parameters>"

  ecc.setValue("payload", payload)
  ecc.setValue("queue", "output")
  ecc.setValue("state", "ready")

  var eccSysId = ecc.insert()

  return {
    success: true,
    ecc_sys_id: eccSysId,
  }
}

// Example: Check disk space on remote server
var diskCheckScript = [
  "var output = {};",
  "try {",
  '    var cmd = "df -h /";',
  "    var result = Packages.com.service_now.mid.probe.tpcon.OperatingSystemCommand.execute(cmd);",
  "    output.disk_info = result.getOutput();",
  "    output.success = true;",
  "} catch (e) {",
  "    output.success = false;",
  "    output.error = e.message;",
  "}",
  "output;",
].join("\n")

Custom Probes (ES5)

Create Probe

javascript
// Create custom probe (ES5 ONLY!)
var probe = new GlideRecord("discovery_probes")
probe.initialize()

probe.setValue("name", "Custom Application Status")
probe.setValue("short_description", "Check custom application status")
probe.setValue("active", true)

// Probe type
probe.setValue("mid_type", "probe")

// Trigger type
probe.setValue("triggered_by", "on_demand")

// Probe script (runs on MID Server - ES5/Rhino!)
probe.setValue(
  "script",
  "var output = {};\n" +
    "\n" +
    "// Get parameters\n" +
    'var host = probe.getParameter("host");\n' +
    'var port = probe.getParameter("port");\n' +
    "\n" +
    "try {\n" +
    "    // Execute health check\n" +
    '    var url = "http://" + host + ":" + port + "/health";\n' +
    "    var conn = new java.net.URL(url).openConnection();\n" +
    '    conn.setRequestMethod("GET");\n' +
    "    conn.setConnectTimeout(5000);\n" +
    "    conn.setReadTimeout(5000);\n" +
    "    \n" +
    "    var responseCode = conn.getResponseCode();\n" +
    '    output.status = (responseCode === 200) ? "healthy" : "unhealthy";\n' +
    "    output.response_code = responseCode;\n" +
    "    output.success = true;\n" +
    "} catch (e) {\n" +
    '    output.status = "unreachable";\n' +
    "    output.error = e.message;\n" +
    "    output.success = false;\n" +
    "}\n" +
    "\n" +
    "output;",
)

probe.insert()

Create Sensor

javascript
// Create sensor to process probe results (ES5 ONLY!)
var sensor = new GlideRecord("discovery_sensors")
sensor.initialize()

sensor.setValue("name", "Process Application Status")
sensor.setValue("short_description", "Process custom application status results")
sensor.setValue("active", true)

// Link to probe
sensor.setValue("triggered_by", probeSysId)

// Sensor script (runs on ServiceNow instance - ES5!)
sensor.setValue(
  "script",
  "(function process(result, source) {\n" +
    "    var output = JSON.parse(result.output);\n" +
    "    \n" +
    "    // Find or create application CI\n" +
    '    var appCI = new GlideRecord("cmdb_ci_appl");\n' +
    '    appCI.addQuery("name", source.getParameter("app_name"));\n' +
    "    appCI.query();\n" +
    "    \n" +
    "    if (!appCI.next()) {\n" +
    "        appCI.initialize();\n" +
    '        appCI.name = source.getParameter("app_name");\n' +
    "        appCI.insert();\n" +
    "    }\n" +
    "    \n" +
    "    // Update status\n" +
    "    appCI.u_health_status = output.status;\n" +
    "    appCI.u_last_health_check = new GlideDateTime();\n" +
    "    appCI.update();\n" +
    "    \n" +
    "    // Create event if unhealthy\n" +
    '    if (output.status !== "healthy") {\n' +
    "        createHealthAlert(appCI, output);\n" +
    "    }\n" +
    "})(result, source);",
)

sensor.insert()

Orchestration (ES5)

Remote PowerShell

javascript
// Execute PowerShell on Windows server (ES5 ONLY!)
function executeRemotePowerShell(midServerName, targetHost, script, credential) {
  var payload = [
    '<?xml version="1.0" encoding="UTF-8"?>',
    "<parameters>",
    '  <parameter name="host"><value>' + targetHost + "</value></parameter>",
    '  <parameter name="credential_id"><value>' + credential + "</value></parameter>",
    '  <parameter name="script"><value><![CDATA[' + script + "]]></value></parameter>",
    "</parameters>",
  ].join("\n")

  var mid = getMIDServer(midServerName)
  if (!mid) {
    return { success: false, error: "MID Server not found" }
  }

  var ecc = new GlideRecord("ecc_queue")
  ecc.initialize()
  ecc.setValue("agent", mid.getUniqueValue())
  ecc.setValue("topic", "PowerShell")
  ecc.setValue("name", "Remote PowerShell Execution")
  ecc.setValue("payload", payload)
  ecc.setValue("queue", "output")
  ecc.setValue("state", "ready")

  return {
    success: true,
    ecc_sys_id: ecc.insert(),
  }
}

Remote SSH

javascript
// Execute SSH command (ES5 ONLY!)
function executeRemoteSSH(midServerName, targetHost, command, credential) {
  var payload = [
    '<?xml version="1.0" encoding="UTF-8"?>',
    "<parameters>",
    '  <parameter name="host"><value>' + targetHost + "</value></parameter>",
    '  <parameter name="credential_id"><value>' + credential + "</value></parameter>",
    '  <parameter name="command"><value>' + escapeXML(command) + "</value></parameter>",
    "</parameters>",
  ].join("\n")

  var mid = getMIDServer(midServerName)
  if (!mid) {
    return { success: false, error: "MID Server not found" }
  }

  var ecc = new GlideRecord("ecc_queue")
  ecc.initialize()
  ecc.setValue("agent", mid.getUniqueValue())
  ecc.setValue("topic", "SSHCommand")
  ecc.setValue("name", "Remote SSH Execution")
  ecc.setValue("payload", payload)
  ecc.setValue("queue", "output")
  ecc.setValue("state", "ready")

  return {
    success: true,
    ecc_sys_id: ecc.insert(),
  }
}

MID Server Monitoring (ES5)

Check MID Status

javascript
// Get MID Server status (ES5 ONLY!)
function getMIDServerStatus() {
  var servers = []

  var mid = new GlideRecord("ecc_agent")
  mid.addQuery("status", "!=", "Decommissioned")
  mid.query()

  while (mid.next()) {
    servers.push({
      name: mid.getValue("name"),
      status: mid.getValue("status"),
      ip: mid.getValue("ip_address"),
      version: mid.getValue("version"),
      validated: mid.getValue("validated"),
      last_refreshed: mid.getValue("last_refreshed"),
      host_name: mid.getValue("host_name"),
    })
  }

  return servers
}

MCP Tool Integration

Available Tools

Tool	Purpose
`snow_query_table`	Query MID and ECC tables
`snow_artifact_manage` (action='find')	Find probes/sensors
`snow_execute_script`	Test MID scripts

Example Workflow

javascript
// 1. Check MID Server status
await snow_query_table({
  table: "ecc_agent",
  query: "status=Up",
  fields: "name,ip_address,version,last_refreshed",
})

// 2. Query ECC queue
await snow_query_table({
  table: "ecc_queue",
  query: "queue=output^state=ready",
  fields: "agent,topic,name,state,sys_created_on",
})

// 3. Find probes
await snow_query_table({
  table: "discovery_probes",
  query: "active=true",
  fields: "name,short_description,mid_type",
})

Best Practices

Credentials - Never hardcode in scripts
Error Handling - Handle network failures
Timeouts - Set appropriate timeouts
Logging - Log for troubleshooting
Security - Limit MID access
Monitoring - Track MID health
Load Balancing - Multiple MIDs for HA
ES5 Only - No modern JavaScript syntax

Publisher	serac-labs
Repository	`serac`
Skill name	`mid-server`
Stars	78
Forks	26
Bundled files	Instructions only
License	Apache-2.0
Links	Skill source Repository Homepage

Mid Server

Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

MID Server for ServiceNow

MID Server Architecture

Key Tables

ECC Queue Communication (ES5)

Send Command to MID Server

Monitor ECC Response

MID Server Scripts (ES5)

Execute Script on MID

Custom Probes (ES5)

Create Probe

Create Sensor

Orchestration (ES5)

Remote PowerShell

Remote SSH

MID Server Monitoring (ES5)

Check MID Status

MCP Tool Integration

Available Tools

Example Workflow

Best Practices

Frequently asked questions

Set up your own AI workspace now

Overview

Installation

Install in TypingMind

Install in another agent

Use it in TypingMind

Works with any AI model

Skill instructions

MID Server for ServiceNow

MID Server Architecture

Key Tables

ECC Queue Communication (ES5)

Send Command to MID Server

Monitor ECC Response

MID Server Scripts (ES5)

Execute Script on MID

Custom Probes (ES5)

Create Probe

Create Sensor

Orchestration (ES5)

Remote PowerShell

Remote SSH

MID Server Monitoring (ES5)

Check MID Status

MCP Tool Integration

Available Tools

Example Workflow

Best Practices

Frequently asked questions

Related AI Skills

Set up your own AI workspace now