How to connect Nusii proposals to Claude Cowork

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Introduction

Cowork is Anthropic's AI agent for knowledge work. Think of it as Claude Code for everything else. It works autonomously with your computer, local files, and applications to accomplish complex tasks.

This guide walks you through the easiest and most secure way to connect your Nusii proposals account to Cowork via Composio Connect, enabling it to create a new proposal for Acme Corp, send a follow-up email for pending proposal, list all proposals sent in the last month, and more such actions on your behalf without compromising your account security.

Also integrate Nusii proposals with

Connecting Nusii proposals to Claude Cowork

1. Open Customize

In Claude Desktop, click Customize in the left sidebar, then select Connectors and click the + icon at the top.

Claude Desktop connectors screen with Add custom connector selected

2. Add the Composio MCP server

Click Add custom connector and paste in the Composio MCP server URL:

bash
https://connect.composio.dev/mcp
Add custom connector dialog with Composio MCP server URL

3. Authorize in your browser

Click Connect. You'll be redirected to a browser window where you can authorize Composio to continue.

Composio authorization screen for Claude Cowork

4. Connect your Nusii proposals account

Back in Cowork, ask the agent to connect to Nusii proposals or give it any Nusii proposals-related task.

For example, ask Cowork to:

  • "Create a new proposal for Acme Corp"
  • "Send a follow-up email for pending proposal"
  • "List all proposals sent in the last month"

It will prompt you to authenticate and authorize access.

That's it. Composio's tools are now available in Cowork, and your Nusii proposals account is ready to use.

What is Claude Cowork?

Claude Cowork is Anthropic's agent for general knowledge work. It can use your computer, files, and connected applications to complete longer-running tasks across your work tools.

With Composio Connect, Cowork can securely access apps like Nusii proposals through MCP without you sharing account credentials directly with the agent.

What is the Nusii proposals MCP server, and what's possible with it?

The Nusii proposals MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Nusii proposals account. It provides structured and secure access so your agent can perform Nusii proposals operations on your behalf.

Supported Tools & Triggers

Tools
Archive ProposalTool to archive a specific proposal in Nusii.
Create ClientTool to create a new client in Nusii Proposals.
Create Line ItemTool to create a line item within a proposal section.
Create ProposalTool to create a new proposal in Nusii.
Create SectionTool to create a section for a proposal or template in Nusii Proposals.
Create Webhook EndpointTool to create a webhook endpoint to subscribe to Nusii events.
Delete a clientTool to delete a specific client from Nusii account.
Delete Line ItemTool to delete a line item from Nusii.
Delete a proposalTool to delete a proposal from the system.
Delete a sectionTool to delete a specific section from Nusii.
Delete Webhook EndpointTool to delete a specific webhook endpoint from the system.
Get Account MeTool to retrieve authenticated user's personal account information and settings.
Get ClientTool to retrieve a single client from Nusii using their unique identifier.
Get ProposalTool to retrieve a single proposal with complete details and sections.
Get SectionTool to retrieve a single section from a proposal or template in Nusii.
Get Webhook EndpointTool to retrieve a single webhook endpoint configuration.
List ClientsTool to retrieve all clients associated with the account.
List Line ItemsTool to retrieve all line items from Nusii Proposals with pagination support.
List Proposal ActivitiesTool to retrieve all proposal activities with optional filtering by proposal or client ID.
List ProposalsTool to retrieve all proposals from your Nusii account with pagination and filtering options.
List Section Line ItemsTool to retrieve all line items from a specific section.
List SectionsTool to retrieve all sections with optional filtering for proposals or templates.
List ThemesTool to retrieve all available themes for proposals in Nusii.
List UsersTool to retrieve all users in paginated format.
List Webhook EndpointsTool to retrieve all webhook endpoints configured for your Nusii account.
Update ClientTool to update an existing client's information in Nusii.
Update Line ItemTool to update an existing line item in Nusii proposals.
Update ProposalTool to update an existing proposal in Nusii.
Update SectionTool to update an existing section in a proposal or template.

How to build Nusii proposals MCP Agent with another framework

FAQ

What are the differences in Tool Router MCP and Nusii proposals MCP?

With a standalone Nusii proposals MCP server, the agents and LLMs can only access a fixed set of Nusii proposals tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Nusii proposals and many other apps based on the task at hand, all through a single MCP endpoint.

Can I use Tool Router MCP with Claude Cowork?

Yes, you can. Claude Cowork 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 Nusii proposals tools.

Can I manage the permissions and scopes for Nusii proposals while using Tool Router?

Yes, absolutely. You can configure which Nusii proposals 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 Nusii proposals data and credentials are handled as safely as possible.

Used by agents from

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Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai
Context
Letta
glean
HubSpot
Agent.ai
Altera
DataStax
Entelligence
Rolai

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