create_field

// WHEN AI AGENTS USE THIS TOOL

AI agents use create_field to create or modify resources in Airtable User MCP. Write operations carry medium risk because an autonomous agent could trigger bulk unintended modifications. Rate limits prevent a single agent session from making hundreds of changes in rapid succession. Argument validation ensures the agent passes expected values.

// WHY ENFORCE A POLICY ON CREATE_FIELD

Without a policy, an AI agent could call create_field repeatedly, creating or modifying resources faster than any human could review. Intercept's rate limiting ensures write operations happen at a controlled pace, and argument validation catches malformed or unexpected inputs before they reach Airtable User MCP.

// RECOMMENDED POLICY

Write tools can modify data. A rate limit prevents runaway bulk operations from AI agents.

airtable-user-mcp.yaml

tools:
  create_field:
    rules:
      - action: allow
        rate_limit:
          max: 30
          window: 60

See the full Airtable User MCP policy for all 37 tools.

// DETAILS

Tool Name create_field

Category Write

MCP Server Airtable User MCP MCP Server

Risk Level Medium

// MORE AIRTABLE USER MCP TOOLS

Destructive delete_field Destructive delete_table Destructive delete_view Destructive remove_extension Write apply_view_sorts Write create_extension Write create_extension_dashboard Write create_formula_field

View all 37 tools →

// WHAT CAN GO WRONG

Agents calling write-class tools like create_field have been implicated in these attack patterns. Read the full case and prevention policy for each:

Browse the full MCP Attack Database →

// OTHER WRITE TOOLS ACROSS MCP SERVERS

Other tools in the Write risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.

AbraFlexi contact_create AbraFlexi contact_update AbraFlexi evidence_create AbraFlexi evidence_update AbraFlexi invoice_issued_update AbraFlexi invoice_received_create

// RELATED READING

// FAQ

What does the create_field tool do? +

Create a new field in an Airtable table. Supports all field types including computed fields (formula, rollup, lookup, count) that are not available via the official API. FIELD TYPES (fieldType parameter): Canonical (internal-API names): "text", "multilineText", "number", "checkbox", "date", "singleSelect", "multipleSelects", "rating", "formula", "rollup", "lookup", "count" Friendly aliases (auto-normalized to internal shape): "url" → type: "text" with typeOptions.validatorName = "url" "email" → type: "text" with typeOptions.validatorName = "email" "phone" / "phoneNumber" → type: "text" with typeOptions.validatorName = "phoneNumber" "dateTime" → type: "date" with typeOptions: { isDateTime: true, dateFormat, timeFormat, timeZone, shouldDisplayTimeZone } TYPE OPTIONS by fieldType: formula: { formulaText: "..." } rollup: { fieldIdInLinkedTable, recordLinkFieldId, resultType, referencedFieldIds } lookup: { recordLinkFieldId, fieldIdInLinkedTable } count: { recordLinkFieldId } number (integer): { format: "integer", negative: false } number (currency): { format: "currency", symbol: "$", precision: 2, negative: false } number (percent): { format: "percentV2", precision: 2, negative: false } date / dateTime: { dateFormat: "Local"|"us"|"european"|"iso"|"friendly", timeFormat: "12hour"|"24hour", timeZone: "UTC"|"client"|<IANA-tz>, shouldDisplayTimeZone: true|false, isDateTime: true (auto for dateTime) } singleSelect: { choices: [{ name: "Option A", color: "blueLight2" }] }. It is categorised as a Write tool in the Airtable User MCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_field? +

Add a rule in your Intercept YAML policy under the tools section for create_field. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Airtable User MCP MCP server.

What risk level is create_field? +

create_field is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit create_field? +

Yes. Add a rate_limit block to the create_field rule in your Intercept 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.

How do I block create_field completely? +

Set action: deny in the Intercept policy for create_field. 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.

What MCP server provides create_field? +

create_field is provided by the Airtable User MCP MCP server (airtable-user-mcp). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policies on Airtable User MCP