Search for link field values (autocomplete).
AI agents call search_link to retrieve information from ERPNext MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool searches/queries link field values to support autocomplete suggestions in ERPNext forms. It retrieves data without creating, modifying, or deleting anything. While it's part of an ERP system, the search operation itself has no side effects and returns only matching records. The blast radius of misuse is minimal—an agent could retrieve link values it shouldn't see, but cannot alter or destroy data.
From the tool's definition Tool name 'search_link' combined with description 'Search for link field values (autocomplete)' indicates a query operation that retrieves matching values without modifying data. The autocomplete pattern is characteristic of read-only lookup functionality.
Attacks that exploit this kind of access
Search for link field values (autocomplete). It is categorised as a Read tool in the ERPNext MCP Server MCP Server, which means it retrieves data without modifying state.
Register the ERPNext MCP Server MCP server in PolicyLayer and add a rule for search_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 ERPNext MCP Server. Nothing to install.
search_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 search_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 search_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.
search_link is provided by the ERPNext MCP Server MCP server (yazelin/erpnext-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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