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

# Update Smartsheet

> Inserts or upserts rows into an existing Smartsheet.

Inserts or upserts rows into an existing Smartsheet. Display name **"Update Smartsheet"**. Off by default.

## Authentication and enablement

Requires a workspace Smartsheet OAuth integration. `access_token` is injected. `sheet_id` is a **config-only** binding (`x-exclude-from-llm`) — do not ask the user for it. Enable the tool, bind the sheet, and bind the integration.

## Inputs

LLM-visible:

* `strategy` (required): `insert` or `upsert`.
* `columns` (required): column names in row-value order.
* `rows` (required): values in the same order as `columns`. A row's length does not need to match `columns` — see Limits and side effects below.
* `key_column` (upsert only): must also appear in `columns`.

## Output

Rows inserted/updated against the bound sheet. The response also lists any supplied column names that weren't found on the sheet (`skipped_columns`), if any were skipped.

## Limits and side effects

* Writes to the customer's Smartsheet.
* Column names are resolved with fuzzy fallback.
* Mismatches are tolerated rather than failing the call: a column name not found on the sheet is skipped (that column is left untouched, not an error); a row shorter than `columns` gets its missing trailing values left blank; a row longer than `columns` has its extra trailing values ignored.

## Expected errors

* Missing access token or bound `sheet_id`.
* Empty `columns` or `rows`.
* `key_column` missing on upsert, or not resolvable on the sheet.
* None of the supplied column names resolve against the sheet.
* Sheet has no columns.


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