Get metadata for an S3 object (HEAD request).
AI agents call s3_get_object_metadata to retrieve information from Integrations MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a HEAD request to retrieve metadata about an S3 object (e.g., content-type, content-length, etag, last-modified). It does not modify, delete, or execute anything—it only queries metadata. The blast radius is minimal; misuse would at worst expose information about object existence and basic properties, not compromise or alter data.
From the tool's definition Tool name contains 'get' and description states 'Get metadata for an S3 object (HEAD request)'. A HEAD request retrieves only headers/metadata without transferring the object body, which is a read-only operation with no side effects.
Attacks that exploit this kind of access
Get metadata for an S3 object (HEAD request). It is categorised as a Read tool in the Integrations MCP MCP Server, which means it retrieves data without modifying state.
Register the Integrations MCP server in PolicyLayer and add a rule for s3_get_object_metadata: 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 Integrations MCP. Nothing to install.
s3_get_object_metadata 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 s3_get_object_metadata 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 s3_get_object_metadata. 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.
s3_get_object_metadata is provided by the Integrations MCP server (shriram-vasudevan/integrations-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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