libc_database_lookup
A read tool on the Nyxstrike MCP server.
This record as markdown: /tools/nyxstrike/libc-database-lookup.md
What libc_database_lookup does on Nyxstrike
AI agents call libc_database_lookup to retrieve information from Nyxstrike without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why libc_database_lookup is rated Low
The tool performs a lookup against a libc (C standard library) database, which is fundamentally a read operation retrieving information. While it operates within a penetration testing platform context (which could theoretically involve offensive operations), the tool itself only queries data without side effects.
From the tool's definition Tool name 'libc_database_lookup' indicates a read-only database query operation. No verbs suggesting modification, deletion, or execution are present.
Attacks that exploit this kind of access
The rule that runs libc_database_lookup safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Nyxstrike, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For libc_database_lookup, this is the rule to start with:
libc_database_lookup 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 Nyxstrike, apply this rule, and every libc_database_lookup call is checked against it from then on.
Questions about libc_database_lookup
libc_database_lookup is a read tool on the Nyxstrike MCP server. It is categorised as a Read tool in the Nyxstrike MCP Server, which means it retrieves data without modifying state.
Register the Nyxstrike MCP server in PolicyLayer and add a rule for libc_database_lookup: 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 Nyxstrike. Nothing to install.
libc_database_lookup 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 libc_database_lookup 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 libc_database_lookup. 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.
libc_database_lookup is provided by the Nyxstrike MCP server (CommonHuman-Lab/nyxstrike). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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