// MCP TOOL REFERENCE

THINKPLC-MCP TOOLS

23 tools from the ThinkPLC-MCP MCP Server, categorised by risk level.

// ALL 23 THINKPLC-MCP TOOLS

READ 14 tools

Read Api-Ping The Api.Ping method outputs a unique ID for the CPU used. You can use it to determine whether the CPU can b... Read Alarms-Browse With this method you can determine which alarms are currently active on the CPU, and when the last change o... Read Api-Browse The Api.Browse method gives you a list of all methods that you can call via the Web API with the current fi... Read Api-GetPasswordPolicy Passwords must fulfill specific criteria to be secure. The Api.GetPasswordPolicy method provides you with t... Read Api-GetPermissions After the successful login, the Api.GetPermissions returns a list of actions for whose execution the user i... Read Api-GetQuantityStructures The Api.GetQuantityStructures method returns different structure information of the Web server. Read Api-Version Use the Api.Version method to request the current version number of the Web API. You can draw conclusions f... Read DiagnosticBuffer-Browse With this method you read out entries from the diagnostics buffer of the CPU. To call the DiagnosticBuffer.... Read Plc-ReadOperatingMode With the Plc.ReadOperatingMode method you can read the operating mode of the CPU. To call the Plc.ReadOpera... Read Plc-ReadSystemTime This API method provides the system time of the CPU. If you have synchronized the system time of the CPU, f... Read PlcProgram-Browse-Children The PlcProgram.Browse method allows you to search for tags and the corresponding metadata according to your... Read PlcProgram-Browse-Var The PlcProgram.Browse method allows you to search for tags and the corresponding metadata according to your... Read PlcProgram-Read Use the PlcProgram.Read method to read a single variable from a CPU. To call the PlcProgram.Read method, yo... Read Project-ReadLanguages This API method returns a list with the project languages available on the CPU. You can then use the

WRITE 7 tools

Write Alarms-Acknowledge Use this method to acknowledge individual alarms. To call the Alarms.Acknowledge method, you need the Write Api-ChangePassword You can change the password for a user account with the Api.ChangePassword method. Recommendation: Before c... Write Api-Login The Api.Login method checks the login data of the user and on successful verification opens a new Web API ... Write Plc-SetSystemTime Use this API method to set the system time of the CPU (PLC local time). To call the Plc.SetSystemTime metho... Write PlcProgram-Write-Boolean Use the PlcProgram.Write method to write a single process tag to the CPU. To call the PlcProgram.Write meth... Write PlcProgram-Write-Number Use the PlcProgram.Write method to write a single process tag to the CPU. To call the PlcProgram.Write meth... Write PlcProgram-Write-String Use the PlcProgram.Write method to write a single process tag to the CPU. To call the PlcProgram.Write meth...

EXECUTE 2 tools

Execute Api-Logout The Api.Logout method removes the token from the list of active Web API sessions and ends the session. The ... Execute Plc-RequestChangeOperatingMode With the Plc.RequestChangeOperatingMode method, you request a new operating mode forthe CPU. Note that this...

// FAQ

How many tools does the ThinkPLC-MCP MCP server have? +

The ThinkPLC-MCP MCP server exposes 23 tools across 3 categories: Read, Write, Execute.

How do I enforce policies on ThinkPLC-MCP tools? +

Route the ThinkPLC-MCP server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard; they are enforced on every call before it reaches the server.

What risk categories do ThinkPLC-MCP tools fall into? +

ThinkPLC-MCP tools are categorised as Read (14), Write (7), Execute (2). Each category has a recommended default policy.

Enforce policy on every ThinkPLC-MCP tool call.

Start from ThinkPLC-MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

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