Describe a Salesforce SObject and return all its field definitions: field API names, labels, data types, lengths, nullability, and relationship references. Use before writing SOQL to discover the correct field API names for Lead, Contact, Campaign, CampaignMember, or any custom object.
AI agents call sf_describe_object to retrieve information from Salesforce Marketing without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
object | string | Yes | SObject API name (e.g. Lead, Campaign) |
fieldsOnly | boolean | — | Return only field names and types |
Parameters from the server's own tool schema.
This is a read operation that queries and returns schema/metadata information about Salesforce objects. It has no side effects and does not create, modify, delete, or execute any operations. The low severity reflects that schema introspection poses minimal risk even if misused by an agent.
From the tool's definition The tool description explicitly states it "return[s] all its field definitions" and is intended to be used "before writing SOQL to discover the correct field API names." It retrieves metadata about object structures without modifying, executing, or deleting…
Attacks that exploit this kind of access
Describe a Salesforce SObject and return all its field definitions: field API names, labels, data types, lengths, nullability, and relationship references. Use before writing SOQL to discover the correct field API names for Lead, Contact, Campaign, CampaignMember, or any custom object. It is categorised as a Read tool in the Salesforce Marketing MCP Server, which means it retrieves data without modifying state.
sf_describe_object accepts 2 parameters: object, fieldsOnly. Required: object. The full parameter table on this page comes from the server's own tool schema.
Register the Salesforce Marketing MCP server in PolicyLayer and add a rule for sf_describe_object: 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 Salesforce Marketing. Nothing to install.
sf_describe_object is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the sf_describe_object 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 sf_describe_object. 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.
sf_describe_object is provided by the Salesforce Marketing MCP server (salesforce-marketing-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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