Fetch the latest posts from the Yapy network. Useful for heartbeats and monitoring.
AI agents call yapy_fetch_feed to retrieve information from Yapy MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data from a social feed without creating, modifying, deleting, or executing operations. It has minimal blast radius—an AI agent misusing this tool would only over-query or spam requests, not cause data loss or security breaches. The description explicitly indicates passive monitoring, not modification.
From the tool's definition Tool description states 'Fetch the latest posts' which is a retrieval operation with 'no side effects' characteristic of Read operations. The context of 'heartbeats and monitoring' further confirms this is a data-querying function.
Attacks that exploit this kind of access
Fetch the latest posts from the Yapy network. Useful for heartbeats and monitoring. It is categorised as a Read tool in the Yapy MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Yapy MCP Server MCP server in PolicyLayer and add a rule for yapy_fetch_feed: 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 Yapy MCP Server. Nothing to install.
yapy_fetch_feed 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 yapy_fetch_feed 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 yapy_fetch_feed. 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.
yapy_fetch_feed is provided by the Yapy MCP Server MCP server (lnicolaie/yapybot-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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