binary_key_extract
Scan a binary for hardcoded key candidates (raw high-entropy, Base64, hex). Read-only — no decryption.
This record as markdown: /tools/io-github-vmoranv-jshookmcp/binary-key-extract.md
What binary_key_extract does on Jshookmcp
AI agents call binary_key_extract to retrieve information from Jshookmcp without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why binary_key_extract is rated Low
Passively searches binary files for key patterns; retrieves data without modification or execution.
From the tool's definition Scan binary, read-only, no decryption
Attacks that exploit this kind of access
The rule that runs binary_key_extract safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Jshookmcp, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For binary_key_extract, this is the rule to start with:
binary_key_extract is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Jshookmcp, apply this rule, and every binary_key_extract call is checked against it from then on.
Questions about binary_key_extract
Scan a binary for hardcoded key candidates (raw high-entropy, Base64, hex). Read-only — no decryption. It is categorised as a Read tool in the Jshookmcp MCP Server, which means it retrieves data without modifying state.
Register the Jshook MCP server in PolicyLayer and add a rule for binary_key_extract: 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 Jshookmcp. Nothing to install.
binary_key_extract 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 binary_key_extract 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 binary_key_extract. 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.
binary_key_extract is provided by the Jshook MCP server (@jshookmcp/jshook). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
More on Jshook, and thousands of servers like it.
This server
Across the catalogue