# How to integrate Docuseal MCP with Mastra AI ```json { "title": "How to integrate Docuseal MCP with Mastra AI", "toolkit": "Docuseal", "toolkit_slug": "docuseal", "framework": "Mastra AI", "framework_slug": "mastra-ai", "url": "https://composio.dev/toolkits/docuseal/framework/mastra-ai", "markdown_url": "https://composio.dev/toolkits/docuseal/framework/mastra-ai.md", "updated_at": "2026-05-12T10:09:26.571Z" } ``` ## Introduction This guide walks you through connecting Docuseal to Mastra AI using the Composio tool router. By the end, you'll have a working Docuseal agent that can list all document templates in your account, create a new template from html content, start a signature workflow from a pdf file through natural language commands. This guide will help you understand how to give your Mastra AI agent real control over a Docuseal account through Composio's Docuseal MCP server. Before we dive in, let's take a quick look at the key ideas and tools involved. ## Also integrate Docuseal with - [OpenAI Agents SDK](https://composio.dev/toolkits/docuseal/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/docuseal/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/docuseal/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/docuseal/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/docuseal/framework/codex) - [OpenClaw](https://composio.dev/toolkits/docuseal/framework/openclaw) - [Hermes](https://composio.dev/toolkits/docuseal/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/docuseal/framework/cli) - [Google ADK](https://composio.dev/toolkits/docuseal/framework/google-adk) - [LangChain](https://composio.dev/toolkits/docuseal/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/docuseal/framework/ai-sdk) - [LlamaIndex](https://composio.dev/toolkits/docuseal/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/docuseal/framework/crew-ai) ## TL;DR Here's what you'll learn: - Set up your environment so Mastra, OpenAI, and Composio work together - Create a Tool Router session in Composio that exposes Docuseal tools - Connect Mastra's MCP client to the Composio generated MCP URL - Fetch Docuseal tool definitions and attach them as a toolset - Build a Mastra agent that can reason, call tools, and return structured results - Run an interactive CLI where you can chat with your Docuseal agent ## What is Mastra AI? Mastra AI is a TypeScript framework for building AI agents with tool support. It provides a clean API for creating agents that can use external services through MCP. Key features include: - MCP Client: Built-in support for Model Context Protocol servers - Toolsets: Organize tools into logical groups - Step Callbacks: Monitor and debug agent execution - OpenAI Integration: Works with OpenAI models via @ai-sdk/openai ## What is the Docuseal MCP server, and what's possible with it? The Docuseal MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Docuseal account. It provides structured and secure access to your eSignature workflows, so your agent can manage templates, automate document submissions, handle submitters, and streamline template operations for you. - Seamless template management: Effortlessly list, retrieve, update, archive, clone, or merge document templates, making it easy to organize and reuse signature documents. - Automated submission workflows: Instantly create new submissions from uploaded PDFs, initiate signature processes, and keep tabs on all current and past document submissions. - Direct HTML-to-template creation: Enable your agent to generate reusable document templates straight from HTML content—no manual web interface required. - Submitter roster management: Retrieve comprehensive lists of all document submitters for reporting, tracking, or management purposes with a single request. - Template merging and duplication: Combine multiple templates into a single document or duplicate templates to accelerate document preparation for recurring workflows. ## Supported Tools | Tool slug | Name | Description | |---|---|---| | `DOCUSEAL_ARCHIVE_SUBMISSION` | Archive Submission | Tool to archive a submission by its unique identifier. Archived submissions are not permanently deleted and can be restored. | | `DOCUSEAL_ARCHIVE_TEMPLATE` | Archive Template | Tool to archive a specific template by its unique identifier. Use after verifying the template ID. | | `DOCUSEAL_CLONE_TEMPLATE2` | Clone Template (v2) | Tool to clone an existing template into a new template with optional custom name, folder, and external_id. Use when you need to duplicate a template with specific customization options. | | `DOCUSEAL_CREATE_SUBMISSION` | Create Submission | Tool to create signature requests (submissions) from an existing document template and send them to submitters. Use this when you have a pre-configured template and want to send it for signing to one or more parties. Supports email and SMS notifications, custom messages, field pre-filling, and sequential or simultaneous signing workflows. | | `DOCUSEAL_CREATE_SUBMISSION_FROM_DOCX` | Create Submission From DOCX | Tool to create a one-off submission (signature request) from a DOCX document with dynamic content variables. Use [[variable_name]] text tags in the DOCX to define dynamic content variables and {{Field Name;role=Signer1;type=date}} text tags to define fillable fields. This allows you to generate personalized documents with pre-filled content and signature fields extracted from the DOCX file. | | `DOCUSEAL_CREATE_SUBMISSION_FROM_HTML` | Create Submission From HTML | Tool to create a one-off submission request from HTML content with embedded field tags rendered as a fillable and signable form. Use this when you want to create a signature request directly from HTML without first creating a reusable template. Field tags in HTML (like {{field_name}} or ) will be automatically converted to fillable form fields. | | `DOCUSEAL_CREATE_SUBMISSION_FROM_PDF` | Create Submission From PDF | Tool to create a one-off submission (signature request) from a PDF file. Use this to upload a PDF document and send it for electronic signature without creating a reusable template first. You can define signature fields and other form fields either by using text tags in the PDF (e.g., {{Signature;role=First Party;type=signature}}) or by specifying field coordinates in the request. | | `DOCUSEAL_CREATE_SUBMISSIONS_FROM_EMAILS` | Create Submissions From Emails | Tool to create submissions for a document template and send them to specified email addresses. Use this for simplified submission creation with Zapier or other automation tools. Each email address will receive a unique submission link. | | `DOCUSEAL_CREATE_TEMPLATE_FROM_DOCX` | Create Template from DOCX | Tool to create a fillable document template from a Microsoft Word DOCX file. Use when you need to convert a DOCX document with field tags into a template. | | `DOCUSEAL_CREATE_TEMPLATE_FROM_HTML` | Create Template from HTML | Tool to create a fillable document template from HTML content with pre-defined fields. Use when you need to create a template directly from HTML with custom field tags for text, signatures, dates, and other fillable elements. | | `DOCUSEAL_CREATE_TEMPLATE_FROM_PDF` | Create Template From PDF | Tool to create a fillable document template from a PDF file. Use when you need to create a reusable template from a PDF. Fields can be defined using {{Field Name;role=Signer1;type=date}} text tags in the PDF or by specifying pixel coordinates. | | `DOCUSEAL_GET_SUBMISSION` | Get Submission | Tool to retrieve detailed information about a specific submission. Use when you need to fetch complete submission details including submitters, documents, status, template, events, and metadata. | | `DOCUSEAL_GET_SUBMISSION_DOCUMENTS` | Get Submission Documents | Tool to retrieve documents for a submission. Returns partially filled documents if the submission is in progress, or final signed documents if completed. Use when you need to download submission documents. | | `DOCUSEAL_GET_SUBMITTER` | Get Submitter | Tool to retrieve detailed information about a submitter by ID. Use when you need to fetch submitter details including documents, field values filled by the signer, submission events, and status. | | `DOCUSEAL_GET_TEMPLATE` | Get Template | Tool to retrieve details of a specific template by its unique identifier. Use when you need to fetch template metadata by ID. | | `DOCUSEAL_LIST_SUBMISSIONS` | List Submissions | List document submissions with filtering and cursor-based pagination. Use to retrieve, search, and browse existing submissions by template, status, or submitter details. Supports searching by submitter name, email, or phone. | | `DOCUSEAL_LIST_SUBMITTERS` | List Submitters | Retrieve a paginated list of submitters with optional filtering. Use this tool to: - List all submitters across all submissions - Filter submitters by submission, status dates, or search query - Paginate through large result sets using 'after' and 'before' cursors Examples: - List all submitters: {} - Filter by submission: {"submission_id": 12345} - Search by email: {"q": "john@example.com"} - Get completed submitters in a date range: {"completed_after": "2024-01-01T00:00:00Z", "completed_before": "2024-12-31T23:59:59Z"} - Paginate results: {"limit": 50, "after": 3567000} | | `DOCUSEAL_LIST_TEMPLATES2` | List Templates (Enhanced) | Tool to retrieve a list of available document templates with pagination and filtering. Use when you need to search templates by name, slug, external_id, folder, or archived status. | | `DOCUSEAL_MERGE_TEMPLATES` | Merge Templates | Merge multiple DocuSeal templates into a single combined template. This action consolidates documents and fields from multiple source templates into one new template. Use this when you need to create a combined document package from existing templates. The merged template will contain all documents and fields from the source templates. Requires at least one template ID, but typically used with two or more. | | `DOCUSEAL_UPDATE_SUBMITTER` | Update Submitter | Tool to update submitter details, pre-fill or update field values, re-send signature request emails, or mark as auto-signed for automatic signing via API. Use when you need to modify submitter information, resend requests, or programmatically complete submissions. | | `DOCUSEAL_UPDATE_TEMPLATE2` | Update Template | Tool to update a document template by moving it to a different folder, changing its name, updating submitter roles, or unarchiving it. Use when you need to modify template properties. | | `DOCUSEAL_UPDATE_TEMPLATE_DOCUMENTS` | Update Template Documents | Tool to add, remove, or replace documents in a template with provided PDF/DOCX file or HTML content. Use when you need to modify the document structure of an existing template. | ## Supported Triggers None listed. ## Creating MCP Server - Stand-alone vs Composio SDK The Docuseal MCP server is an implementation of the Model Context Protocol that connects your AI agent to Docuseal. It provides structured and secure access so your agent can perform Docuseal operations on your behalf through a secure, permission-based interface. With Composio's managed implementation, you don't have to create your own developer app. For production, if you're building an end product, we recommend using your own credentials. The managed server helps you prototype fast and go from 0-1 faster. ## Step-by-step Guide ### 1. Prerequisites Before starting, make sure you have: - Node.js 18 or higher - A Composio account with an active API key - An OpenAI API key - Basic familiarity with TypeScript ### 1. Getting API Keys for OpenAI and Composio OpenAI API Key - Go to the [OpenAI dashboard](https://platform.openai.com/settings/organization/api-keys) and create an API key. - You need credits or a connected billing setup to use the models. - Store the key somewhere safe. Composio API Key - Log in to the [Composio dashboard](https://dashboard.composio.dev?utm_source=toolkits&utm_medium=framework_docs). - Go to Settings and copy your API key. - This key lets your Mastra agent talk to Composio and reach Docuseal through MCP. ### 2. Install dependencies Install the required packages. What's happening: - @composio/core is the Composio SDK for creating MCP sessions - @mastra/core provides the Agent class - @mastra/mcp is Mastra's MCP client - @ai-sdk/openai is the model wrapper for OpenAI - dotenv loads environment variables from .env ```bash npm install @composio/core @mastra/core @mastra/mcp @ai-sdk/openai dotenv ``` ### 3. Set up environment variables Create a .env file in your project root. What's happening: - COMPOSIO_API_KEY authenticates your requests to Composio - COMPOSIO_USER_ID tells Composio which user this session belongs to - OPENAI_API_KEY lets the Mastra agent call OpenAI models ```bash COMPOSIO_API_KEY=your_composio_api_key_here COMPOSIO_USER_ID=your_user_id_here OPENAI_API_KEY=your_openai_api_key_here ``` ### 4. Import libraries and validate environment What's happening: - dotenv/config auto loads your .env so process.env.* is available - openai gives you a Mastra compatible model wrapper - Agent is the Mastra agent that will call tools and produce answers - MCPClient connects Mastra to your Composio MCP server - Composio is used to create a Tool Router session ```typescript import "dotenv/config"; import { openai } from "@ai-sdk/openai"; import { Agent } from "@mastra/core/agent"; import { MCPClient } from "@mastra/mcp"; import { Composio } from "@composio/core"; import * as readline from "readline"; import type { AiMessageType } from "@mastra/core/agent"; const openaiAPIKey = process.env.OPENAI_API_KEY; const composioAPIKey = process.env.COMPOSIO_API_KEY; const composioUserID = process.env.COMPOSIO_USER_ID; if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set"); if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set"); if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set"); const composio = new Composio({ apiKey: composioAPIKey as string, }); ``` ### 5. Create a Tool Router session for Docuseal What's happening: - create spins up a short-lived MCP HTTP endpoint for this user - The toolkits array contains "docuseal" for Docuseal access - session.mcp.url is the MCP URL that Mastra's MCPClient will connect to ```typescript async function main() { const session = await composio.create( composioUserID as string, { toolkits: ["docuseal"], }, ); const composioMCPUrl = session.mcp.url; console.log("Docuseal MCP URL:", composioMCPUrl); ``` ### 6. Configure Mastra MCP client and fetch tools What's happening: - MCPClient takes an id for this client and a list of MCP servers - The headers property includes the x-api-key for authentication - getTools fetches the tool definitions exposed by the Docuseal toolkit ```typescript const mcpClient = new MCPClient({ id: composioUserID as string, servers: { nasdaq: { url: new URL(composioMCPUrl), requestInit: { headers: session.mcp.headers, }, }, }, timeout: 30_000, }); console.log("Fetching MCP tools from Composio..."); const composioTools = await mcpClient.getTools(); console.log("Number of tools:", Object.keys(composioTools).length); ``` ### 7. Create the Mastra agent What's happening: - Agent is the core Mastra agent - name is just an identifier for logging and debugging - instructions guide the agent to use tools instead of only answering in natural language - model uses openai("gpt-5") to configure the underlying LLM ```typescript const agent = new Agent({ name: "docuseal-mastra-agent", instructions: "You are an AI agent with Docuseal tools via Composio.", model: "openai/gpt-5", }); ``` ### 8. Set up interactive chat interface What's happening: - messages keeps the full conversation history in Mastra's expected format - agent.generate runs the agent with conversation history and Docuseal toolsets - maxSteps limits how many tool calls the agent can take in a single run - onStepFinish is a hook that prints intermediate steps for debugging ```typescript let messages: AiMessageType[] = []; console.log("Chat started! Type 'exit' or 'quit' to end.\n"); const rl = readline.createInterface({ input: process.stdin, output: process.stdout, prompt: "> ", }); rl.prompt(); rl.on("line", async (userInput: string) => { const trimmedInput = userInput.trim(); if (["exit", "quit", "bye"].includes(trimmedInput.toLowerCase())) { console.log("\nGoodbye!"); rl.close(); process.exit(0); } if (!trimmedInput) { rl.prompt(); return; } messages.push({ id: crypto.randomUUID(), role: "user", content: trimmedInput, }); console.log("\nAgent is thinking...\n"); try { const response = await agent.generate(messages, { toolsets: { docuseal: composioTools, }, maxSteps: 8, }); const { text } = response; if (text && text.trim().length > 0) { console.log(`Agent: ${text}\n`); messages.push({ id: crypto.randomUUID(), role: "assistant", content: text, }); } } catch (error) { console.error("\nError:", error); } rl.prompt(); }); rl.on("close", async () => { console.log("\nSession ended."); await mcpClient.disconnect(); process.exit(0); }); } main().catch((err) => { console.error("Fatal error:", err); process.exit(1); }); ``` ## Complete Code ```typescript import "dotenv/config"; import { openai } from "@ai-sdk/openai"; import { Agent } from "@mastra/core/agent"; import { MCPClient } from "@mastra/mcp"; import { Composio } from "@composio/core"; import * as readline from "readline"; import type { AiMessageType } from "@mastra/core/agent"; const openaiAPIKey = process.env.OPENAI_API_KEY; const composioAPIKey = process.env.COMPOSIO_API_KEY; const composioUserID = process.env.COMPOSIO_USER_ID; if (!openaiAPIKey) throw new Error("OPENAI_API_KEY is not set"); if (!composioAPIKey) throw new Error("COMPOSIO_API_KEY is not set"); if (!composioUserID) throw new Error("COMPOSIO_USER_ID is not set"); const composio = new Composio({ apiKey: composioAPIKey as string }); async function main() { const session = await composio.create(composioUserID as string, { toolkits: ["docuseal"], }); const composioMCPUrl = session.mcp.url; const mcpClient = new MCPClient({ id: composioUserID as string, servers: { docuseal: { url: new URL(composioMCPUrl), requestInit: { headers: session.mcp.headers, }, }, }, timeout: 30_000, }); const composioTools = await mcpClient.getTools(); const agent = new Agent({ name: "docuseal-mastra-agent", instructions: "You are an AI agent with Docuseal tools via Composio.", model: "openai/gpt-5", }); let messages: AiMessageType[] = []; const rl = readline.createInterface({ input: process.stdin, output: process.stdout, prompt: "> ", }); rl.prompt(); rl.on("line", async (input: string) => { const trimmed = input.trim(); if (["exit", "quit"].includes(trimmed.toLowerCase())) { rl.close(); return; } messages.push({ id: crypto.randomUUID(), role: "user", content: trimmed }); const { text } = await agent.generate(messages, { toolsets: { docuseal: composioTools }, maxSteps: 8, }); if (text) { console.log(`Agent: ${text}\n`); messages.push({ id: crypto.randomUUID(), role: "assistant", content: text }); } rl.prompt(); }); rl.on("close", async () => { await mcpClient.disconnect(); process.exit(0); }); } main(); ``` ## Conclusion You've built a Mastra AI agent that can interact with Docuseal through Composio's Tool Router. You can extend this further by: - Adding other toolkits like Gmail, Slack, or GitHub - Building a web-based chat interface around this agent - Using multiple MCP endpoints to enable cross-app workflows ## How to build Docuseal MCP Agent with another framework - [OpenAI Agents SDK](https://composio.dev/toolkits/docuseal/framework/open-ai-agents-sdk) - [Claude Agent SDK](https://composio.dev/toolkits/docuseal/framework/claude-agents-sdk) - [Claude Code](https://composio.dev/toolkits/docuseal/framework/claude-code) - [Claude Cowork](https://composio.dev/toolkits/docuseal/framework/claude-cowork) - [Codex](https://composio.dev/toolkits/docuseal/framework/codex) - [OpenClaw](https://composio.dev/toolkits/docuseal/framework/openclaw) - [Hermes](https://composio.dev/toolkits/docuseal/framework/hermes-agent) - [CLI](https://composio.dev/toolkits/docuseal/framework/cli) - [Google ADK](https://composio.dev/toolkits/docuseal/framework/google-adk) - [LangChain](https://composio.dev/toolkits/docuseal/framework/langchain) - [Vercel AI SDK](https://composio.dev/toolkits/docuseal/framework/ai-sdk) - [LlamaIndex](https://composio.dev/toolkits/docuseal/framework/llama-index) - [CrewAI](https://composio.dev/toolkits/docuseal/framework/crew-ai) ## Related Toolkits - [Google Drive](https://composio.dev/toolkits/googledrive) - Google Drive is a cloud storage platform for uploading, sharing, and collaborating on files. It's perfect for keeping your documents accessible and organized across devices. - [Google Docs](https://composio.dev/toolkits/googledocs) - Google Docs is a cloud-based word processor that enables document creation and real-time collaboration. Its seamless sharing and version history make team editing and content management a breeze. - [Google Super](https://composio.dev/toolkits/googlesuper) - Google Super is an all-in-one suite combining Gmail, Drive, Calendar, Sheets, Analytics, and more. It gives you a unified platform to manage your digital life, boosting productivity and organization. - [Affinda](https://composio.dev/toolkits/affinda) - Affinda is an AI-powered document processing platform that automates data extraction from resumes, invoices, and more. It streamlines document-heavy workflows by turning files into structured, actionable data. - [Agility cms](https://composio.dev/toolkits/agility_cms) - Agility CMS is a headless content management system for building and managing digital experiences across platforms. It lets teams update content quickly and deliver omnichannel experiences with ease. - [Algodocs](https://composio.dev/toolkits/algodocs) - Algodocs is an AI-powered platform that automates data extraction from business documents. It delivers fast, secure, and accurate processing without templates or manual training. - [Api2pdf](https://composio.dev/toolkits/api2pdf) - Api2Pdf is a REST API for generating PDFs from HTML, URLs, and documents using powerful engines like wkhtmltopdf and Headless Chrome. It streamlines document conversion and automation for developers and businesses. - [Aryn](https://composio.dev/toolkits/aryn) - Aryn is an AI-powered platform for parsing, extracting, and analyzing data from unstructured documents. Use it to automate document processing and unlock actionable insights from your files. - [Boldsign](https://composio.dev/toolkits/boldsign) - Boldsign is a digital eSignature platform for sending, signing, and tracking documents online. Organizations use it to automate agreements and manage legally binding workflows efficiently. - [Boloforms](https://composio.dev/toolkits/boloforms) - BoloForms is an eSignature platform built for small businesses, offering unlimited signatures, templates, and forms. It simplifies digital document signing and team collaboration at a predictable, fixed price. - [Box](https://composio.dev/toolkits/box) - Box is a cloud content management and file sharing platform for businesses. It helps teams securely store, organize, and collaborate on files from anywhere. - [Carbone](https://composio.dev/toolkits/carbone) - Carbone is a blazing-fast report generator that turns JSON data into PDFs, Word docs, spreadsheets, and more using flexible templates. It lets you automate document creation at scale with minimal code. - [Castingwords](https://composio.dev/toolkits/castingwords) - CastingWords is a transcription service specializing in human-powered, accurate transcripts via a simple API. Get seamless audio-to-text conversion for interviews, meetings, podcasts, and more. - [Cloudconvert](https://composio.dev/toolkits/cloudconvert) - CloudConvert is a powerful file conversion service supporting over 200 file formats. It streamlines converting, compressing, and managing documents, media, and more, all in one place. - [Cloudlayer](https://composio.dev/toolkits/cloudlayer) - Cloudlayer is a document and asset generation service for creating PDFs and images via API or SDKs. It lets you automate high-quality doc creation, saving dev time and reducing manual work. - [Cloudpress](https://composio.dev/toolkits/cloudpress) - Cloudpress is a content export tool for Google Docs and Notion. It automates publishing to your favorite Content Management Systems. - [Contentful graphql](https://composio.dev/toolkits/contentful_graphql) - Contentful graphql is a content delivery API that lets you access Contentful data using GraphQL queries. It gives you efficient, flexible ways to fetch and manage structured content for any digital project. - [Conversion tools](https://composio.dev/toolkits/conversion_tools) - Conversion Tools is an online service for converting documents between formats such as PDF, Word, Excel, XML, and CSV. It lets you automate complex document workflows with just a few clicks. - [Convertapi](https://composio.dev/toolkits/convertapi) - ConvertAPI is a robust file conversion service for documents, images, and spreadsheets. It streamlines programmatic format changes and lets developers automate complex workflows with a single API. - [Craftmypdf](https://composio.dev/toolkits/craftmypdf) - CraftMyPDF is a web-based service for designing and generating PDFs with templates and live data. It streamlines document creation by automating personalized PDFs at scale. ## Frequently Asked Questions ### What are the differences in Tool Router MCP and Docuseal MCP? With a standalone Docuseal MCP server, the agents and LLMs can only access a fixed set of Docuseal tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Docuseal and many other apps based on the task at hand, all through a single MCP endpoint. ### Can I use Tool Router MCP with Mastra AI? Yes, you can. Mastra AI 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 Docuseal tools. ### Can I manage the permissions and scopes for Docuseal while using Tool Router? Yes, absolutely. You can configure which Docuseal 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 Docuseal data and credentials are handled as safely as possible. --- [See all toolkits](https://composio.dev/toolkits) · [Composio docs](https://docs.composio.dev/llms.txt)