gcp_logging_create_sink
Create a logging sink (export)
This record as markdown: /tools/ahmedselimmansor-ctrl-gcp-mcp-server/gcp-logging-create-sink.md
What gcp_logging_create_sink does on GCP MCP Server
AI agents use gcp_logging_create_sink to create or update resources in GCP MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your GCP MCP Server environment.
Why gcp_logging_create_sink is rated Medium
This tool creates a new logging sink resource that establishes ongoing log export behavior. While reversible (the sink can be deleted), it modifies GCP infrastructure configuration and could redirect sensitive logs to unintended destinations if misconfigured by an agent. This is a Write action (creates/modifies data reversibly), not Read (no data retrieval) or Destructive (sink can be removed).
From the tool's definition Tool name includes 'create' and description states 'Create a logging sink (export)'. A logging sink in GCP configures continuous export of logs to external destinations (Cloud Storage, BigQuery, Pub/Sub, etc.), which creates a new persistent configuration.
Attacks that exploit this kind of access
The rule that runs gcp_logging_create_sink safely
PolicyLayer is an MCP gateway: it sits between your AI agents and GCP MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For gcp_logging_create_sink, this is the rule to start with:
gcp_logging_create_sink 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 GCP MCP Server, apply this rule, and every gcp_logging_create_sink call is checked against it from then on.
Questions about gcp_logging_create_sink
Create a logging sink (export). It is categorised as a Write tool in the GCP MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the GCP MCP Server MCP server in PolicyLayer and add a rule for gcp_logging_create_sink: 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 GCP MCP Server. Nothing to install.
gcp_logging_create_sink 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 gcp_logging_create_sink 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 gcp_logging_create_sink. 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.
gcp_logging_create_sink is provided by the GCP MCP Server MCP server (ahmedselimmansor-ctrl/gcp_mcp_server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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