Liner Launches 'Liner Actions MCP', Letting Users Access 1,000+ Tools Instantly with a Single Connection

Liner (CEO Jinwoo Kim), a global AI agent startup, announced on the 29th that it has launched Liner Actions MCP, an integrated tool-connection solution for AI agents. It is an integrated connection service that lets users connect just once to the AI agent they use, such as Claude or ChatGPT, and then use 1,100+ external apps including Calendar, Slack and Notion as tools through natural-language commands alone.

MCP (Model Context Protocol) is a standard that allows AI agents to connect with external services and perform actual tasks. Under the existing approach, however, users had to repeatedly find the ones they needed among thousands of MCPs, check the installation method for each service, and obtain and configure API keys. This process is cumbersome even for developers, and for ordinary users without development knowledge it acted as a barrier that made it hard to even get started. As the era in which each individual has their own AI agent takes hold and MCPs multiply explosively, the burden on users of finding and connecting tools one by one is bound to grow.

Liner developed Liner Actions MCP to improve the inefficiency of exploring and connecting countless tools one at a time and to enhance user convenience. Using it is simple. Users just follow the guide provided on the Liner Actions website (actions.liner.com/ko) and run it as instructed. Afterwards, when using a particular service for the first time, they log in once to that service's account via the connection link the agent provides, and integration is completed automatically. Since anyone can broaden the scope of their agent without complicated setup, it is expected to drive the popularization of the MCP ecosystem.

Its core strength is unrivaled integration stability through direct verification. Existing connection services on the market claim to offer tens of thousands of tools, yet in actual use those tools frequently fail to work. Liner, by contrast, called each of the 1,100+ tools it provides in a variety of environments to verify that they operate normally. As a result, users can put tools connected through Liner Actions MCP straight to work without needless trial and error over tools that connect but do not run.

The way it is used has also become more intelligent. When a user makes a natural-language request such as "Summarize what was discussed in the Slack marketing channel this week into Notion," the agent understands the context, finds and connects the necessary MCPs on its own, retrieves the information and carries out the request. With simple commands, users can experience comprehensive work processes that span individual tools, such as organizing GitHub issues or sharing meeting minutes. In addition, even tools that have not been connected in advance are found and activated the moment they are requested, overcoming the limits of pre-configuration, and because tools are called only when needed, the context-overload problem that arises with multiple integrations is greatly reduced.

Security and data protection have also received close attention. Liner Actions MCP serves only as a relay between the user's agent and each service's MCP server and does not separately store user data. Records generated in the course of using the service are all de-identified and designed so that even inside Liner the details of that information cannot be viewed.

Yoonki Kim, Liner Actions Squad Lead, said, "The existing MCP approach had a high barrier to entry, making it difficult for ordinary users to experience the true value of agents." He added, "We want to create an environment where anyone can easily use their own AI agent. Going forward, we will continue to expand the agent ecosystem so that users can explore knowledge and boost work productivity more conveniently, without complicated setup."

Meanwhile, Liner also provides Liner Actions API for companies developing their own AI agent products. Enterprise developers can use this API to easily implement connector functionality that integrates with 1,100+ services in their own agents. In fact, Liner Write already includes connector functionality built on Liner Actions API, so anyone can try it out directly. Liner Actions MCP and API, currently offered free of charge, support Korean and English, and Liner plans to keep expanding its verified compatible tools by reflecting user feedback.