Find similar formulas or beads using HNSW pattern matching (150x-12500x faster)
AI agents call gt_wasm_match_pattern to retrieve information from Claude Flow without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a query and search operation that retrieves or identifies similar items from an existing dataset. There is no indication of data modification, code execution, or irreversible changes. The performance characteristics mentioned (150x-12500x faster) refer to algorithmic efficiency, not capability escalation.
From the tool's definition The tool description indicates it 'Find[s] similar formulas or beads' using pattern matching. The verb 'find' is a retrieval operation with no modification, deletion, or execution of code.
Attacks that exploit this kind of access
Find similar formulas or beads using HNSW pattern matching (150x-12500x faster). It is categorised as a Read tool in the Claude Flow MCP Server, which means it retrieves data without modifying state.
Register the Claude Flow MCP server in PolicyLayer and add a rule for gt_wasm_match_pattern: 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 Claude Flow. Nothing to install.
gt_wasm_match_pattern 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 gt_wasm_match_pattern 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 gt_wasm_match_pattern. 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.
gt_wasm_match_pattern is provided by the Claude Flow MCP server (claude-flow). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.