How to connect LINE to Hermes Agent
Connect LINE to Hermes with ClawLink: paste your LINE key once and 13 tools work from chat. No MCP server to run, nothing stored on your machine.
LINEAPI KEYMCPUse a LINE Official Account's Messaging API channel to manage messages, audiences, and rich menus.. Once connected, Hermes Agent can read and act on LINE from chat — pairing, token refresh, and tool wiring handled for you.
Most guides for giving Hermes Agent LINE access start with registering your own OAuth app or pasting API keys into env files, then leave the token refresh and tool wiring to you. ClawLink gives Hermes a more practical LINE setup: pair once in the browser and your always-on Hermes agent can act on LINE for you, reading and doing real work on your behalf with no auth, token refresh, or tool wiring to build yourself.
Setup
It takes three steps to connect Hermes to LINE.
1Install and pair
Install the ClawLink plugin, then pair Hermes with a one-time browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable- 2
Connect LINE
Paste your API key in the dashboard.
- 3
Use it from chat
Ask Hermes Agent: "What can you do with LINE?"
Install by command
The prompt above walks Hermes through this. By hand, it is four commands and a browser approval:
hermes plugins install ClawLink-HQ/hermes-plugin --enable
hermes clawlink begin # prints an approval link — open it and approve
hermes clawlink finish # after approving in the browser
hermes clawlink testThen connect LINE in the ClawLink dashboard — paste your LINE API key once.
Verify the connection by asking Hermes:
Use LINE to download message content preview and walk me through the result in plain English.
Using a different agent?
The Hermes plugin is one client of ClawLink's MCP server. Claude Code, Cursor, Codex, or any agent that can run a shell command pairs with the same ClawLink account through the CLI:
npx -y @useclawlink/cli loginlogin opens the same browser approval and stores a credential locally. Once LINE is connected in the dashboard, that agent calls the same 13 LINE tools over MCP. Full setup for MCP clients and shell agents: connect apps to any AI agent.
LINE MCP for Hermes
Looking for a LINE MCP server for Hermes Agent? ClawLink connects LINE to Hermes Agent and exposes 13 LINE tools your agent can call over MCP, with hosted auth and nothing to run or maintain yourself. Using OpenClaw instead? The OpenClaw LINE integration works the same way.
What the Hermes Agent LINE integration can do
13 LINE tools are ready for Hermes Agent once the account is connected. The 12 below are the ones people reach for most; your agent can call all 13.
12 of 13 LINE tools for Hermes
| Tool | What it does |
|---|---|
Download message content preview line_download_message_content_preview | Download LINE's reduced-size preview image for a retained image or video message whose |
Get message delivery count line_get_message_delivery_count | Get the number of reply, push, multicast, or broadcast messages sent on one UTC+9 calendar date |
Get rich menu line_get_rich_menu | Get one Messaging API rich-menu definition by ID, including its canvas, tappable areas, and |
List chat member IDS line_list_chat_member_ids | Return one page of member user IDs for a group or legacy room containing the bot |
List follower IDS line_list_follower_ids | Return one page of user IDs for friends of the LINE Official Account |
List rich menus line_list_rich_menus | List all rich menus created through the Messaging API |
Create rich menu line_create_rich_menu | Create a rich-menu definition and return its ID |
Link or unlink user rich menu line_link_or_unlink_user_rich_menu | Link or unlink a per-user rich menu |
Set or clear default rich menu line_set_or_clear_default_rich_menu | Set or clear the Messaging API default rich menu |
Create rich menu with image line_create_rich_menu_with_image | Create a rich-menu definition and upload its JPEG or PNG image in one call |
Mark messages as read line_mark_messages_as_read | Mark all messages through a webhook-issued read token as read |
Upload rich menu image line_upload_rich_menu_image | Upload a JPEG or PNG image for a rich menu |
Try it: find the LINE tool you need
Browse the 12 LINE tools
Click any tool to see exactly what Hermes can do and copy a ready-to-use prompt.
Example prompts
Use LINE to download message content preview and walk me through the result in plain English.
Pull the relevant data from LINE, summarize it in plain English, and point out anything that needs attention.
List the relevant items in LINE, group them by priority, and recommend what Hermes should do next.
ClawLink vs. building it yourself
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want LINE working from chat.
| Manual | ClawLink | |
|---|---|---|
| Credential handling | Collect, validate, store, and rotate the LINE API key yourself, then make sure every tool call uses the right account. | Users complete the hosted ClawLink setup once and the connected LINE account becomes available to the agent without you building credential management. |
| Ongoing maintenance | You own refresh logic, permission debugging, environment config, and every provider-specific edge case for LINE. | ClawLink handles the repetitive integration plumbing so your team can focus on the workflow instead of the infrastructure. |
| Agent usability | You still need to expose the right LINE actions to the runtime in a format your agent can reliably use. | 13 tools for LINE are already exposed through ClawLink, so the agent can read and act from chat immediately. |
ClawLink vs. Composio
Composio also exposes LINE to AI agents. It is developer infrastructure: Python and TypeScript SDKs, an MCP server, and a catalog past 1,000 apps, aimed at teams shipping agent products. ClawLink is built for Hermes Agent users instead. You install the plugin once, connect LINE in the browser, and the 13 tools above work from chat. There is no SDK and no config file, and the LINE key you paste at setup is stored server-side rather than kept in your environment. Choosing between them? Read the full Composio alternatives comparison.
Troubleshooting
Hermes paired but still can't use LINE
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
Connection succeeds but no tools appear
Reconnect LINE from the dashboard, then start a fresh chat if the runtime still has the old tool catalog loaded.
"Tool schema not loaded yet" error when calling LINE tools
LINE tool schemas load on demand the first time a tool runs and are cached after that, so this error usually clears on its own: wait a few seconds and retry the same request. If every LINE call keeps failing with it in a fresh chat, reconnect from the dashboard, and contact support if it still persists — that pattern points to a configuration problem on our side, not something you can fix by reconnecting again.
LINE returns 403 or "permission denied" on one action while others work
Two usual causes. The connected account may not have access to the specific workspace, inbox, store, or project in the request — check that first. If access looks right, the agent may have sent a placeholder value (like "YOUR_ID" or an example id from documentation) instead of a real one: ask it to run a list or search tool first, then retry the action with a real id from those results. Most failures at this stage are one of these two, not ClawLink bugs.
API key setup works but results look incomplete
Double-check that the API key for LINE has the right scopes or account access. A valid key can still be too limited for some reads or writes.
FAQ
Is there a Hermes Agent LINE integration?
Yes. ClawLink is the fastest way to connect Hermes to LINE: link your LINE account once in the browser and Hermes Agent can call the LINE API through 13 ready-made tools — no custom code or token handling.
How do I connect LINE to Hermes with ClawLink?
Install the plugin with hermes plugins install ClawLink-HQ/hermes-plugin --enable, then pair once: run hermes clawlink begin, approve the link in your browser, and run hermes clawlink finish. Connect LINE in the dashboard and Hermes can use it from the next message — no config files, and the LINE key you paste is stored server-side instead of in your environment.
How long does it take to connect LINE to Hermes Agent?
About two minutes. Sign in, click Connect next to LINE in the dashboard, authenticate, and Hermes Agent can use it from the next chat message.
Why use ClawLink instead of wiring LINE up myself?
The alternative to ClawLink is usually manual API key setup plus your own token handling, permission troubleshooting, and tool plumbing for Hermes Agent. That is fine if you want to build and maintain the integration yourself. Most teams just want LINE working from chat.
Hermes paired but still can't use LINE
Pairing is a two-step handshake: run hermes clawlink begin, approve the link in your browser, then run hermes clawlink finish. If you ran finish before approving, or the approval link expired, run hermes clawlink begin again to get a fresh link. Confirm the plugin was installed with --enable, then verify with hermes clawlink test.
