List the news category labels supported by Currents (e.g. technology, business, world, sports). Example: list_categories({})
AI agents call list_categories to retrieve information from Mcp Currents without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
| Parameter | Type | Required | Description |
|---|---|---|---|
_apiKey | string | — | Optional Currents API key. Omit to use the platform key. |
Parameters from the server's own tool schema.
This tool performs a simple read operation to retrieve metadata about available news categories. It queries data (the list of category labels) without creating, modifying, deleting, or executing anything. The operation is non-destructive and has no blast radius if misused by an AI agent.
From the tool's definition Tool description states 'List the news category labels' and example shows list_categories({}), which retrieves a static list of supported categories with no parameters. No side effects, modifications, or external operations.
Attacks that exploit this kind of access
List the news category labels supported by Currents (e.g. technology, business, world, sports). Example: list_categories({}). It is categorised as a Read tool in the Mcp Currents MCP Server, which means it retrieves data without modifying state.
list_categories accepts 1 parameter: _apiKey. The full parameter table on this page comes from the server's own tool schema.
Register the Mcp Currents MCP server in PolicyLayer and add a rule for list_categories: 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 Mcp Currents. Nothing to install.
list_categories 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 list_categories 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 list_categories. 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.
list_categories is provided by the Mcp Currents MCP server (https://gateway.pipeworx.io/currents/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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