# How to integrate Plain MCP with Hermes ```json { "title": "How to integrate Plain MCP with Hermes", "toolkit": "Plain", "toolkit_slug": "plain", "framework": "Hermes", "framework_slug": "hermes-agent", "url": "https://composio.dev/toolkits/plain/framework/hermes-agent", "markdown_url": "https://composio.dev/toolkits/plain/framework/hermes-agent.md", "updated_at": "2026-05-06T08:23:56.103Z" } ``` ## Introduction Hermes is a 24/7 autonomous agent that lives on your computer or server — it remembers what it learns and evolves as your usage grows. This guide explains the easiest and most robust way to connect your Plain account to Hermes. You can do this through either Composio Connect CLI or Composio Connect MCP. For personal use we recommend the CLI, but you won't go wrong with MCP either. ## Also integrate Plain with - [OpenAI Agents SDK](https://composio.dev/toolkits/plain/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/plain/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/plain/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/plain/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/plain/framework/codex) - [OpenClaw](https://composio.dev/toolkits/plain/framework/openclaw) - [CLI](https://composio.dev/toolkits/plain/framework/cli) - [Google ADK](https://composio.dev/toolkits/plain/framework/google-adk) - [LangChain](https://composio.dev/toolkits/plain/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/plain/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/plain/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/plain/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/plain/framework/crew-ai) ## TL;DR ### What is Composio Connect? Composio Connect is a consumer offering that lets anyone plug 1,000+ applications directly into their agent harness — including Hermes. It can: - Search and load tools from relevant toolkits on-demand, reducing context usage. - Chain multiple tools to accomplish complex workflows via a remote workbench, without excessive back-and-forth with the LLM. - Manage app authentication end-to-end with zero manual overhead. ## Connect Plain to Hermes ### Integrating Plain with Hermes ### Using Composio Connect CLI 1. Install the Composio CLI Run the install script directly, or paste https://composio.dev/hermes into your Hermes chat box to have it installed for you. ```bash curl -fsSL https://composio.dev/install | bash ``` ## What is the Plain MCP server, and what's possible with it? The Plain MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Plain account. It provides structured and secure access to your B2B support workspace, so your agent can perform actions like managing customers, creating support threads, fetching company details, handling issues, and organizing customer groups on your behalf. - Customer management and onboarding: Automatically create new customer records, fetch customer information by email or ID, and add customers to specific support groups for better organization. - Support thread creation: Let your agent create new support threads tied to customers, making it easy to kick off or escalate conversations without manual intervention. - Issue tracking and retrieval: Fetch all external issue links associated with a customer, helping your team stay on top of ongoing problems and resolutions. - Company and tier information access: Retrieve detailed company profiles and tier metadata, including contract value, owner details, and more, to personalize support interactions. - User and customer cleanup: Safely delete customers or users from the system when offboarding or data hygiene is needed, all through agent-driven actions. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `PLAIN_ADD_CUSTOMER_TO_GROUP` | Add Customer To Group | Tool to add a customer to one or more customer groups. use when you have a customer and groups ready. | | `PLAIN_CREATE_CUSTOMER` | Create Customer | Tool to create a customer. use after gathering email and full name to provision a new customer in plain. | | `PLAIN_CREATE_THREAD` | Create Thread | Tool to create a new thread. use after obtaining valid customer identifier. | | `PLAIN_DELETE_CUSTOMER` | Delete Customer | Tool to delete a customer from the system. use when you need to remove a customer by their id. | | `PLAIN_DELETE_USER` | Delete User | Tool to delete a user from the system. use when you need to remove a user by their id after confirming existence. | | `PLAIN_FETCH_COMPANY` | Fetch Company | Tool to fetch company details by id. use when you need the full profile of a company, including name, domain, contract value, owner info, and timestamps. | | `PLAIN_FETCH_ISSUES` | Fetch Issues | Tool to fetch external issue links for a customer. use when you need to list all issues across a customer's threads. | | `PLAIN_FETCH_TIER` | Fetch Tier | Tool to fetch a tier by its id. use when you have a tier id and need its metadata before proceeding. example: "fetch tier with id tier 123". | | `PLAIN_GET_CUSTOMER_BY_EMAIL` | Get Customer By Email | Tool to fetch customer details by email. use after confirming the email exists to retrieve detailed customer information. | | `PLAIN_GET_CUSTOMER_BY_ID` | Get Customer By ID | Tool to retrieve details of a specific customer by their unique id. use after obtaining the customer's id to fetch their complete record. | | `PLAIN_GET_CUSTOMERS` | Get Customers | Tool to fetch a list of customers. use when retrieving multiple customer records with pagination, filtering, or sorting. | | `PLAIN_GET_THREAD_BY_ID` | Get Thread By ID | Tool to fetch details of a specific thread using its unique identifier. use after confirming the thread id is correct. | | `PLAIN_GET_USER_BY_ID` | Get User By ID | Tool to fetch user by id. use when you have a valid user id to retrieve detailed user information. | | `PLAIN_LIST_THREADS` | List Threads | Tool to list all threads. use when you need to retrieve thread summaries with optional pagination. | | `PLAIN_LIST_TIERS` | List Tiers | Tool to retrieve a list of tiers with pagination. use when you need to browse available tiers after determining pagination cursors. example: 'list tiers with first=25'. | | `PLAIN_PLAIN_CREATE_CUSTOMER_GROUP` | Create Customer Group | Tool to create a new customer group. use when needing to group customers for segmentation. creates a new customer group with specified name, key, color, and optional externalid. | | `PLAIN_PLAIN_LIST_CUSTOMER_GROUPS` | List Customer Groups | Tool to list all customer groups. use when you need to retrieve group metadata with optional pagination or filters. | | `PLAIN_PLAIN_QUERY_THREADS` | List Threads | Tool to retrieve a paginated list of threads. use when you need to list threads with optional status filtering. | | `PLAIN_REMOVE_CUSTOMER_FROM_GROUP` | Remove Customer From Group | Tool to remove a customer from one or more customer groups. use when you need to revoke memberships. | | `PLAIN_SEND_MESSAGE` | Send Message | Tool to send a new message within a thread. use after identifying the thread and preparing message content. | | `PLAIN_UPDATE_COMPANY` | Update Company | Tool to update an existing company's details. use when modifying a company's name or domain. | | `PLAIN_UPDATE_THREAD` | Update Thread | Tool to update a thread's title. use when renaming a thread after confirming its id. | | `PLAIN_UPSERT_CUSTOMER` | Upsert Customer | Tool to upsert (create or update) a customer. use when syncing or ensuring a customer record exists before subsequent actions. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Plain MCP server provides comprehensive access to Plain operations through Composio. Once connected, Hermes can perform all major Plain actions on your behalf using natural language commands. ## Complete Code None listed. ## Conclusion ### Way Forward With Plain connected, Hermes can now act on your behalf whenever it detects a relevant task or you ask it to. From here, you can extend Hermes further: - Connect more apps: Calendar, Slack, Notion, Linear, and hundreds of others are available through the same Composio Connect setup. Each new integration compounds what Hermes can do for you. - Build workflows across tools: Once multiple apps are connected, Hermes can chain actions together — turn an email into a calendar invite, a Slack message into a Linear ticket, or a meeting note into a follow-up draft. - Let it learn your patterns: The more you use Hermes, the better it gets at anticipating how you'd handle recurring tasks. Give it feedback on drafts and decisions, and it will adapt. If you run into trouble or want to share what you've built, join the [community](https://discord.com/invite/composio) or check out the [Docs](https://docs.composio.dev?utm_source=toolkits&utm_medium=framework_template&utm_campaign=hermes&utm_content=docs) for deeper configuration options. ## How to build Plain MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/plain/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/plain/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/plain/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/plain/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/plain/framework/codex) - [OpenClaw](https://composio.dev/toolkits/plain/framework/openclaw) - [CLI](https://composio.dev/toolkits/plain/framework/cli) - [Google ADK](https://composio.dev/toolkits/plain/framework/google-adk) - [LangChain](https://composio.dev/toolkits/plain/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/plain/framework/ai-sdk) - [Mastra AI](https://composio.dev/toolkits/plain/framework/mastra-ai) - [LlamaIndex](https://composio.dev/toolkits/plain/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/plain/framework/crew-ai) ## Related Toolkits - [Aeroleads](https://composio.dev/toolkits/aeroleads) - Aeroleads is a B2B lead generation platform for finding business emails and phone numbers. Grow your sales pipeline faster with powerful prospecting tools. - [Autobound](https://composio.dev/toolkits/autobound) - Autobound is an AI-powered sales engagement platform that crafts hyper-personalized outreach and insights. It helps sales teams boost response rates and close more deals through tailored content and recommendations. - [Better proposals](https://composio.dev/toolkits/better_proposals) - Better Proposals is a web-based tool for crafting and sending professional proposals. It helps teams impress clients and close deals faster with slick, easy-to-use templates. - [Bidsketch](https://composio.dev/toolkits/bidsketch) - Bidsketch is a proposal software that helps businesses create professional proposals quickly and efficiently. It streamlines the proposal process, saving time while boosting client win rates. - [Bolna](https://composio.dev/toolkits/bolna) - Bolna is an AI platform for building conversational voice agents. It helps businesses automate support and streamline interactions through natural, voice-powered conversations. - [Botsonic](https://composio.dev/toolkits/botsonic) - Botsonic is a no-code AI chatbot builder for easily creating and deploying chatbots to your website. It empowers businesses to offer conversational experiences without writing code. - [Botstar](https://composio.dev/toolkits/botstar) - BotStar is a comprehensive chatbot platform for designing, developing, and training chatbots visually on Messenger and websites. It helps businesses automate conversations and customer interactions without coding. - [Callerapi](https://composio.dev/toolkits/callerapi) - CallerAPI is a white-label caller identification platform for branded caller ID and fraud prevention. It helps businesses boost customer trust while stopping spam, fraud, and robocalls. - [Callingly](https://composio.dev/toolkits/callingly) - Callingly is a lead response management platform that automates immediate call and text follow-ups with new leads. It helps sales teams boost response speed and close more deals by connecting seamlessly with CRMs and lead sources. - [Callpage](https://composio.dev/toolkits/callpage) - Callpage is a lead capture platform that lets businesses instantly connect with website visitors via callback. It boosts lead generation and increases your sales conversion rates. - [Clearout](https://composio.dev/toolkits/clearout) - Clearout is an AI-powered service for verifying, finding, and enriching email addresses. It boosts deliverability and helps you discover high-quality leads effortlessly. - [Clientary](https://composio.dev/toolkits/clientary) - Clientary is a platform for managing clients, invoices, projects, proposals, and more. It streamlines client work and saves you serious admin time. - [Convolo ai](https://composio.dev/toolkits/convolo_ai) - Convolo ai is an AI-powered communications platform for sales teams. It accelerates lead response and improves conversion rates by automating calls and integrating workflows. - [Delighted](https://composio.dev/toolkits/delighted) - Delighted is a customer feedback platform based on the Net Promoter System®. It helps you quickly gather, track, and act on customer sentiment. - [Docsbot ai](https://composio.dev/toolkits/docsbot_ai) - Docsbot ai is a platform that lets you build custom AI chatbots trained on your documentation. It automates customer support and content generation, saving time and improving response quality. - [Emelia](https://composio.dev/toolkits/emelia) - Emelia is an all-in-one B2B prospecting platform for cold-email, LinkedIn outreach, and prospect research. It streamlines outbound campaigns so you can find, engage, and warm up leads faster. - [Findymail](https://composio.dev/toolkits/findymail) - Findymail is a B2B data provider offering verified email and phone contacts for sales prospecting. Enhance outreach with automated exports, email verification, and CRM enrichment. - [Freshdesk](https://composio.dev/toolkits/freshdesk) - Freshdesk is customer support software with ticketing and automation tools. It helps teams streamline helpdesk operations for faster, better customer support. - [Fullenrich](https://composio.dev/toolkits/fullenrich) - FullEnrich is a B2B contact enrichment platform that aggregates emails and phone numbers from 15+ data vendors. Instantly find and verify lead contact data to boost your outreach. - [Gatherup](https://composio.dev/toolkits/gatherup) - GatherUp is a customer feedback and online review management platform. It helps businesses boost their reputation by streamlining how they collect and manage customer feedback. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Plain MCP? With a standalone Plain MCP server, the agents and LLMs can only access a fixed set of Plain tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Plain and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Hermes? Yes, you can. Hermes fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Plain tools. ### Can I manage the permissions and scopes for Plain while using Tool Router? Yes, absolutely. You can configure which Plain scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do. ### How safe is my data with Composio Tool Router? All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Plain data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)