Search cards by content, tags, or date. Returns rich results with deckId, createdAt, updatedAt. Includes scannedCount and truncated flags.
AI agents call search_cards to retrieve information from Mochi 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 queries flashcard data without any side effects. It performs a search operation that returns information about cards but does not create, modify, delete, or execute any actions. The mention of 'scannedCount' and 'truncated flags' further confirms it is a read-only query operation. No user confirmation or two-phase commit is needed for safe reads.
From the tool's definition Tool description explicitly states 'Search cards by content, tags, or date' and 'Returns rich results' — purely retrieval operations with no modification, deletion, or execution capability.
Attacks that exploit this kind of access
Search cards by content, tags, or date. Returns rich results with deckId, createdAt, updatedAt. Includes scannedCount and truncated flags. It is categorised as a Read tool in the Mochi MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Mochi MCP Server MCP server in PolicyLayer and add a rule for search_cards: 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 Mochi MCP Server. Nothing to install.
search_cards 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_cards 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_cards. 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_cards is provided by the Mochi MCP Server MCP server (nz99/mochi-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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