append_to_sheet
Append rows to a Google Spreadsheet. [write-tier — first use may require a manager's approval; a from-now-on approval makes future calls seamless, a just-once approval re-asks next time.]
This record as markdown: /tools/com-getfreedomos-freedom-mcp/append-to-sheet.md
What append_to_sheet does on Freedom Mcp
AI agents use append_to_sheet to create or update resources in Freedom Mcp, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Freedom Mcp environment.
| Parameter | Type | Required | Description |
|---|---|---|---|
values | array | Yes | Array of rows to append |
companyId | string | Yes | FreedomOS company id to act within (you must be a member). Required for company-scoped tools. |
spreadsheet_id | string | Yes | Spreadsheet ID |
Parameters from the server's own tool schema.
Why append_to_sheet is rated Medium
This tool creates or modifies data (appending rows) but does not delete, overwrite irreversibly, execute arbitrary code, or move money. It is reversible—appended rows can be edited or removed. The 'write-tier' approval structure confirms it is a Write-category operation. Severity is medium because misuse could corrupt business data or spreadsheets, but the operation is bounded to a single sheet and is undoable.
From the tool's definition Tool name 'append_to_sheet' and description 'Append rows to a Google Spreadsheet' indicate creation/modification of data in a spreadsheet. The approval tier notation confirms reversible write operations (rows can be deleted/modified later).
Attacks that exploit this kind of access
The rule that runs append_to_sheet safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Freedom Mcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For append_to_sheet, this is the rule to start with:
append_to_sheet stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Freedom Mcp, apply this rule, and every append_to_sheet call is checked against it from then on.
Questions about append_to_sheet
Append rows to a Google Spreadsheet. [write-tier — first use may require a manager's approval; a from-now-on approval makes future calls seamless, a just-once approval re-asks next time.]. It is categorised as a Write tool in the Freedom Mcp MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
append_to_sheet accepts 3 parameters: values, companyId, spreadsheet_id. Required: values, companyId, spreadsheet_id. The full parameter table on this page comes from the server's own tool schema.
Register the Freedom MCP server in PolicyLayer and add a rule for append_to_sheet: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches Freedom Mcp. Nothing to install.
append_to_sheet is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the append_to_sheet rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for append_to_sheet. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
append_to_sheet is provided by the Freedom MCP server (https://twuluxmoognlwtmaoqgo.supabase.co/functions/v1/freedom-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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