How to Use the Common Paper MCP in Mastra AI

Q: Can Mastra AI automatically retry a failed Common Paper contract creation?

Yes. When sendagreement fails due to API limits or network issues, Mastra's workflow engine uses its built-in retry logic to execute the tool again with exponential backoff.

Q: How do I build a conditional contract workflow in Mastra AI using Common Paper?

Create a Mastra workflow that calls getagreement to check the current status. Use conditional branching to trigger a Slack alert if unsigned, or call your billing API if the status is fully signed.

Q: How do I inspect available templates before sending?

Have your Mastra AI agent call listtemplates or gettemplate to inspect the available forms. This lets the agent verify that the required variables exist before constructing the payload for a new agreement.

Automate multi-step contract workflows and retries using Mastra AI and Common Paper.

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Connect Common Paper MCP to Mastra AI

Create your Vinkius account to connect Common Paper to Mastra AI and route execution through our secure gateway. The platform manages server hosting, runtime updates, and security layers. Configuration requires no manual server provisioning.

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Setup Common Paper with Mastra AI

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Build resilient contract pipelines in Mastra AI

The Common Paper MCP Server integrates directly with Mastra AI workflows to handle multi-step legal processes. You can design execution steps that call `send_agreement` and automatically transition based on the results. If the network hiccups during a transfer, Mastra AI uses its built-in exponential backoff to retry the tool call. This ensures your legal documents get sent without manual intervention or silent failures.

Automate webhook setup with human-in-the-loop approvals

The `create_webhook` tool allows your Mastra AI agent to configure event listeners for contract milestones automatically. You can chain this with other workflows to register endpoints whenever a new customer tenant is provisioned. To maintain strict control, use Mastra's `requireToolApproval` feature before executing `delete_webhook` or changing active endpoints. Your engineers get a confirmation prompt before any webhook configuration changes actually occur.

Verify signed contracts before triggering downstream steps

The `list_signed_agreements` tool lets your agent verify completed deals before starting post-sale workflows. Mastra AI queries this endpoint to check if a specific customer has finalized their paperwork. If the agreement is missing, the workflow branches to notify account managers or search for drafts using `search_agreements_by_email`. This keeps your billing and provisioning pipelines perfectly aligned via the MCP protocol.

Setup guide

Set up Common Paper MCP in Mastra AI

Prerequisites

Node.js 18+ and a TypeScript project
@mastra/mcp + @mastra/core packages
Active Vinkius subscription with a valid endpoint token

1

Install dependencies
Run npm install @mastra/mcp @mastra/core plus your preferred model provider (e.g. @ai-sdk/openai).
2

Configure the MCPClient
Create an MCPClient with your Vinkius endpoint as a URL object. Replace [YOUR_TOKEN_HERE] with your token from cloud.vinkius.com.
3

Discover and inject tools
Call mcpClient.listTools() and spread the result into your agent's tools object. All Common Paper tools become native Mastra tools.
4

Run with any model
Swap openai("gpt-4o") for any AI SDK-compatible provider. Call agent.generate() and the agent routes tool calls through MCP automatically.

agent.ts

import { MCPClient } from "@mastra/mcp";
import { Agent } from "@mastra/core/agent";
import { openai } from "@ai-sdk/openai";

const mcpClient = new MCPClient({
  id: "common-paper-mcp-client",
  servers: {
    "common-paper-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

const agent = new Agent({
  name: "Common Paper Agent",
  model: openai("gpt-4o"),
  instructions: "You have access to Common Paper tools.",
  tools: {
    ...(await mcpClient.listTools()),
  },
});

const result = await agent.generate(
  "List recent Common Paper transactions"
);
console.log(result.text);

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Independent Platform Disclaimer: Vinkius is an independent platform and is not affiliated with, endorsed by, sponsored by, verified by, or otherwise authorized by Common Paper. All third-party trademarks, logos, and brand names are the property of their respective owners. Their use on this website is strictly for informational purposes to identify service compatibility and interoperability.

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Common questions about Common Paper MCP in Mastra AI

Instantiate the client pointing to your MCP gateway on Vinkius. Spread the results of `mcpClient.listTools()` directly into your Mastra agent's tool configuration array.

Yes. When `send_agreement` fails due to API limits or network issues, Mastra's workflow engine uses its built-in retry logic to execute the tool again with exponential backoff.

Create a Mastra workflow that calls `get_agreement` to check the current status. Use conditional branching to trigger a Slack alert if unsigned, or call your billing API if the status is fully signed.

Have your Mastra AI agent call `list_templates` or `get_template` to inspect the available forms. This lets the agent verify that the required variables exist before constructing the payload for a new agreement.

Your contract templates and signed agreements are protected by Vinkius's single-token architecture. Auth is managed securely at the gateway, meaning your Mastra AI environment never exposes your raw API keys during MCP Server execution.

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