How to Use the Karbon MCP in Mastra AI

Q: How do I configure Mastra AI to talk to Karbon?

Install @mastra/mcp. Initialize the MCPClient with your server URL. Call listTools and spread them directly into your Mastra Agent definition.

Q: Can Mastra AI automatically retry a failed Karbon task update?

Yes. The framework intercepts any failure from updateworkitem. It applies exponential backoff and tries the mutation again based on your workflow rules.

Q: How do I require partner approval for Karbon work items in Mastra AI?

Set the requireToolApproval flag on your agent. When it tries to call createworkitem, the execution pauses until an administrator signs off.

Q: Which tool finds specific team members for assignment?

Use listusers. It pulls the internal roster so your workflow can assign tasks to the correct associate.

Orchestrate complex accounting workflows with Karbon and Mastra AI using automated retries and conditional branching.

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Connect Karbon MCP to Mastra AI

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Setup Karbon with Mastra AI

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Chain Karbon Work Items in Mastra AI

The `list_work_items` tool feeds your workflow engine a complete snapshot of firm engagements. Mastra AI takes this array and evaluates conditions. If a tax return is stuck, the agent automatically triggers the next step based on your rules. You build branches using `list_work_tasks` to check specific deliverables. If a task fails verification, Mastra retries the check with exponential backoff. Your team stops manually checking statuses every morning.

Sync Accounting CRM Records

The `create_contact` tool pushes new clients into your system automatically when an onboarding workflow completes. You pass the person or organization type. The agent handles the creation step without human intervention. Pulling historical context requires `list_contact_notes`. The workflow grabs every interaction logged for that client. You feed those notes into the next branch of your automation to draft tailored follow-up emails.

Update Engagements with Human-in-the-Loop

The `update_work_item` tool changes project states directly inside Karbon. You configure Mastra to require tool approval before firing this mutation. A partner clicks approve, and the MCP Server executes the change. Kicking off new projects works exactly the same way with `create_work_item`. The agent drafts the project scope, pauses for your confirmation, and then creates the record. You keep control over the database while automating the busywork.

Setup guide

Set up Karbon 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 Karbon 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: "karbon-mcp-client",
  servers: {
    "karbon-mcp": {
      url: new URL(
        "https://edge.vinkius.com/[YOUR_TOKEN_HERE]/mcp"
      ),
    },
  },
});

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

const result = await agent.generate(
  "List recent Karbon 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 Karbon. 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 Karbon MCP in Mastra AI

Install `@mastra/mcp`. Initialize the `MCPClient` with your server URL. Call `listTools` and spread them directly into your Mastra Agent definition.

Yes. The framework intercepts any failure from `update_work_item`. It applies exponential backoff and tries the mutation again based on your workflow rules.

Set the `requireToolApproval` flag on your agent. When it tries to call `create_work_item`, the execution pauses until an administrator signs off.

Use `list_users`. It pulls the internal roster so your workflow can assign tasks to the correct associate.

The system reads internal firm users, client notes, and engagement statuses. Vinkius routes this traffic through an ephemeral zero-trust container. The connection drops and wipes all traces immediately after the workflow branch completes.

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