Search for a byte pattern in the binary. Supports ?? wildcards for unknown bytes. Example pattern:
AI agents call search_bytes to retrieve information from Kawaiidra MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves matching byte sequences from a binary without modifying, executing, or destroying any data. It is analogous to a search or grep operation, which is a read-only action. The wildcard support (??), while flexible, still indicates pattern matching rather than execution of code or modification of the binary.
From the tool's definition Tool name 'search_bytes' and description indicate it performs pattern searching in binary files. The action is to 'search for a byte pattern' with no modification, deletion, or execution capability—purely a query/retrieval operation.
Documented attack patterns abuse exactly the kind of access search_bytes gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Kawaiidra MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for search_bytes:
{
"version": "1",
"default": "deny",
"tools": {
"search_bytes": {}
}
}search_bytes is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Search for a byte pattern in the binary. Supports ?? wildcards for unknown bytes. Example pattern:. It is categorised as a Read tool in the Kawaiidra MCP MCP Server, which means it retrieves data without modifying state.
Register the Kawaiidra MCP server in PolicyLayer and add a rule for search_bytes: 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 Kawaiidra MCP. Nothing to install.
search_bytes 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_bytes 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_bytes. 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_bytes is provided by the Kawaiidra MCP server (wagonbomb/kawaiidra-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Kawaiidra MCP, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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94 Kawaiidra MCP tools catalogued and risk-classified — across an index of 43,000+ MCP servers.