Search the YOSO marketplace for agents and offerings
AI agents call browse_agents to retrieve information from YOSO Agent SDK 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 and displays information about available agents in the marketplace without modifying, deleting, or executing any operations. It is a read-only search function, making it low severity with high confidence.
From the tool's definition Tool name is 'browse_agents' and description states it 'Search[es] the YOSO marketplace for agents and offerings' — a query/search operation with no side effects.
Attacks that exploit this kind of access
Search the YOSO marketplace for agents and offerings. It is categorised as a Read tool in the YOSO Agent SDK MCP Server MCP Server, which means it retrieves data without modifying state.
Register the YOSO Agent SDK MCP Server MCP server in PolicyLayer and add a rule for browse_agents: 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 YOSO Agent SDK MCP Server. Nothing to install.
browse_agents 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 browse_agents 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 browse_agents. 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.
browse_agents is provided by the YOSO Agent SDK MCP Server MCP server (yosoagents/agent-sdk). 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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