search_product_substitutions
AI agents call search_product_substitutions to retrieve information from DigiKey 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 for product substitutions—a query operation that retrieves data about alternative electronic components without modifying any data. It fits the Read category pattern of other tools on this server. The empty description prevents full certainty, but contextual evidence from the server's purpose and naming conventions strongly indicates a read-only search capability.
From the tool's definition Tool named 'search_product_substitutions' on a server described as providing 'access to the DigiKey Product Search API' with capabilities including 'search' and 'retrieve detailed product specifications.' Sibling tools like 'keyword_search',…
Attacks that exploit this kind of access
search_product_substitutions. It is categorised as a Read tool in the DigiKey MCP Server MCP Server, which means it retrieves data without modifying state.
Register the DigiKey MCP Server MCP server in PolicyLayer and add a rule for search_product_substitutions: 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 DigiKey MCP Server. Nothing to install.
search_product_substitutions 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_product_substitutions 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_product_substitutions. 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_product_substitutions is provided by the DigiKey MCP Server MCP server (simon-77/digikey-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.
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