> ## Documentation Index
> Fetch the complete documentation index at: https://docs.langchain.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Connect tools and capabilities to Managed Deep Agents

> Declare MCP servers and LangSmith capabilities with Managed Deep Agents connectors.

Managed Deep Agents discovers connector modules under `connectors/`. Each file directly under that folder is a connector; you do not register connectors in the agent entry.

<Note>
  Managed Deep Agents is in **private [beta](/langsmith/release-stages)**, available on [LangSmith Cloud](/langsmith/cloud) in the US region only. [Join the waitlist](https://www.langchain.com/langsmith-managed-deep-agents-waitlist) to request access.
</Note>

## Connector types

| Connector                                                        | File                            | What it does                                                                                                                                                                           |
| ---------------------------------------------------------------- | ------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| [MCP](/langsmith/managed-deep-agents-connectors/mcp)             | `connectors/mcp.{py\|ts}`       | Loads tools from remote MCP servers at runtime and appends them to authored tools.                                                                                                     |
| [LangSmith](/langsmith/managed-deep-agents-connectors/langsmith) | `connectors/langsmith.{py\|ts}` | Lets browsers and other untrusted callers invoke allowlisted LangSmith operations without receiving `LANGSMITH_API_KEY`. Requires [identity](/langsmith/managed-deep-agents-identity). |

For the full project layout, see the [CLI project file reference](/langsmith/managed-deep-agents-cli#project-file-reference).

The current `mda` CLI does not include workspace MCP server management commands. Do not use older `deepagents mcp-servers ...` examples for Managed Deep Agents projects.

## Combine connectors with authored tools

Use [custom tools](/langsmith/managed-deep-agents-tools) for business logic, private APIs, database access, and other project-owned code. Use [custom middleware](/langsmith/managed-deep-agents-middleware) for cross-cutting behavior around model calls, tool calls, lifecycle hooks, retries, limits, and data handling.

MCP connector tools are appended to the tools you define in the agent file. LangSmith capabilities are exposed on separate HTTP routes scoped by [identity](/langsmith/managed-deep-agents-identity).

## Test and deploy

Test the project locally with [`mda dev`](/langsmith/managed-deep-agents-cli#develop-locally), then deploy it with [`mda deploy`](/langsmith/managed-deep-agents-deploy). Open deployment traces in LangSmith to inspect model calls, tool calls, errors, and latency.

Connector misconfiguration usually surfaces during local startup or first tool load. LangSmith capability calls return 401 without a resolved identity and 403 when ownership checks fail.

## Next steps

<CardGroup cols={2}>
  <Card title="MCP connector" icon="plug" href="/langsmith/managed-deep-agents-connectors/mcp">
    Load tools from remote MCP servers.
  </Card>

  <Card title="LangSmith connector" icon="chart-line" href="/langsmith/managed-deep-agents-connectors/langsmith">
    Expose constrained LangSmith capabilities to untrusted callers.
  </Card>

  <Card title="Identity" icon="fingerprint" href="/langsmith/managed-deep-agents-identity">
    Authenticate callers required by the LangSmith connector.
  </Card>

  <Card title="CLI reference" icon="terminal" href="/langsmith/managed-deep-agents-cli">
    Look up connector project file rules.
  </Card>
</CardGroup>

***

<div className="source-links">
  <Callout icon="terminal-2">
    [Connect these docs](/use-these-docs) to Claude, VSCode, and more via MCP for real-time answers.
  </Callout>

  <Callout icon="edit">
    [Edit this page on GitHub](https://github.com/langchain-ai/docs/edit/main/src/langsmith/managed-deep-agents-connectors/index.mdx) or [file an issue](https://github.com/langchain-ai/docs/issues/new/choose).
  </Callout>
</div>