List all Merx providers with types, durations, and availability. No authentication required.
AI agents call list_providers to retrieve information from MERX - TRON Resource Exchange without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and lists information about providers—a read-only operation with no ability to modify, delete, execute code, or commit financial obligations. The lack of authentication requirement and the passive nature of listing publicly available provider data confirms the Read category. Severity is low because exposure of provider listings causes minimal harm to the system or user assets.
From the tool's definition Tool name 'list_providers' and description stating it 'List all Merx providers' indicates data retrieval. Description explicitly states 'No authentication required' and involves querying provider information without side effects.
Attacks that exploit this kind of access
List all Merx providers with types, durations, and availability. No authentication required. It is categorised as a Read tool in the MERX - TRON Resource Exchange MCP Server, which means it retrieves data without modifying state.
Register the MERX - TRON Resource Exchange MCP server in PolicyLayer and add a rule for list_providers: 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 MERX - TRON Resource Exchange. Nothing to install.
list_providers 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_providers 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_providers. 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_providers is provided by the MERX - TRON Resource Exchange MCP server (Hovsteder/merx-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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