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

# MCP available fields reference

> Discover dataset fields before selecting MCP search and enrichment inputs.

MCP schemas can vary by dataset type and operation. Do not guess a field name
from a previous dataset or another operation.

## For AI agents

* Call `get_dataset_fields` for the current `dataset_id`.
* Use the returned field names and types exactly.
* Preserve the account and dataset identifiers used to retrieve the schema.
* Explain when a requested field is unavailable instead of silently substituting one.

## Discover fields

```text theme={null}
For dataset ds-7f3c2a, list the available company fields and identify which ones can be used for enrichment. Do not start enrichment.
```

```json theme={null}
{
  "account_id": "5093",
  "dataset_id": "ds-7f3c2a"
}
```

Call `get_dataset_fields`, then use its response to construct `enrich_dataset`, `qualify_dataset`, `research_dataset`, or `transform_dataset` arguments. See [Supported MCP tools](https://www.landbase.com/docs/guides/mcp/mcp-supported-tools.md) for the current schema.

## Dynamic schemas

MCP field availability is dataset- and operation-specific, so the response from
`get_dataset_fields` is the authoritative catalog for the current request. It
may include field names, types, descriptions, and whether a field can be used
for a particular operation.

Use exact returned names in later calls. If a requested field is not present,
ask the user to choose an available alternative rather than silently
substituting one.

## Field discovery before paid work

Field discovery is read-only. Inspect the schema before requesting a quote for
enrichment, contact enrichment, qualification, or research. Preserve the same
`account_id` and `dataset_id` on the quote, confirmation, and workflow polls.

For advanced searches, request desired output columns in the natural-language
query. The returned dataset schema determines the exact columns available
afterward.

See [Advanced Dataset Creator in the MCP search reference](https://www.landbase.com/docs/reference/mcp/search.md#advanced-dataset-creator).


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