---
title: "dataplex-lookup-context"
type: docs
weight: 1
description: > 
  A "dataplex-lookup-context" tool provides rich metadata of one or more data assets along with their relationships.
aliases:
  - /integrations/dataplex/tools/dataplex-lookup-context/
---

## About

A `dataplex-lookup-context` tool provides rich metadata of one or more data assets along with their relationships.

`dataplex-lookup-context` takes a required `resources` parameter which is a list of up to 10 resource names for which metadata is needed in the following form: `projects/{project}/locations/{location}/entryGroups/{group}/entries/{entry}`. All resources must belong to the same Google Cloud location.

## Compatible Sources

{{< compatible-sources >}}

## Requirements

### IAM Permissions

Knowledge Catalog (formerly known as Dataplex) uses [Identity and Access Management (IAM)][iam-overview] to control
user and group access to Knowledge Catalog resources. Toolbox will use your
[Application Default Credentials (ADC)][adc] to authorize and authenticate when
interacting with [Knowledge Catalog][dataplex-docs].

In addition to [setting the ADC for your server][set-adc], you need to ensure
the IAM identity has been given the correct IAM permissions for the tasks you
intend to perform. See [Knowledge Catalog IAM permissions][iam-permissions]
and [Knowledge Catalog IAM roles][iam-roles] for more information on
applying IAM permissions and roles to an identity.

**Note on Lookup Context Tool Behavior:** This specific tool utilizes a post-filtering
approach for authorization. This means that any authenticated user can call the tool's
API endpoint. However, the response will only contain data for resources that the
caller's identity (via ADC) has the necessary IAM permissions to access. If the caller
has no permissions on the requested resources, the tool will return an empty response
rather than an access denied error.

[iam-overview]: https://cloud.google.com/dataplex/docs/iam-and-access-control
[adc]: https://cloud.google.com/docs/authentication#adc
[set-adc]: https://cloud.google.com/docs/authentication/provide-credentials-adc
[iam-permissions]: https://cloud.google.com/dataplex/docs/iam-permissions
[iam-roles]: https://cloud.google.com/dataplex/docs/iam-roles
[dataplex-docs]: https://cloud.google.com/dataplex/docs

## Parameters

The `dataplex-lookup-context` tool accepts the following parameters:

| **field** | **type** | **required** | **description** |
| --------- | :------: | :----------: | --------------- |
| resources | list of strings | true | A list of up to 10 resource names for which metadata is needed (format: `projects/{project}/locations/{location}/entryGroups/{group}/entries/{entry}`). |

## Example

```yaml
kind: tool
name: lookup_context
type: dataplex-lookup-context
source: my-dataplex-source
description: Use this tool to retrieve rich metadata regarding one or more data assets along with their relationships.
```

## Reference

| **field**   | **type** | **required** | **description**                                    |
|-------------|:--------:|:------------:|----------------------------------------------------|
| type        |  string  |     true     | Must be "dataplex-lookup-context".                 |
| source      |  string  |     true     | Name of the source the tool should execute on.     |
| description |  string  |     true     | Description of the tool that is passed to the LLM. |