AI agents call get_link to retrieve information from Paymongo without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves/queries existing payment link data by identifier or reference number. It performs a lookup only—no data is modified, created, deleted, or financial transactions are initiated. The operation is information-retrieval only, fitting the Read category with low severity since exposure poses minimal direct risk beyond information disclosure about payment links already created.
From the tool's definition Tool name is 'get_link' and description states 'Retrieve a Payment Link', which are read operations with no side effects.
Attacks that exploit this kind of access
Retrieve a Payment Link by link_id, or look it up by reference_number. It is categorised as a Read tool in the Paymongo MCP Server, which means it retrieves data without modifying state.
Register the Paymongo MCP server in PolicyLayer and add a rule for get_link: 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 Paymongo. Nothing to install.
get_link 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 get_link 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 get_link. 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.
get_link is provided by the Paymongo MCP server (theyahia/paymongo-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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