check_http_headers
A read tool on the Nyxstrike MCP server.
This record as markdown: /tools/nyxstrike/check-http-headers.md
What check_http_headers does on Nyxstrike
AI agents call check_http_headers 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 check_http_headers is rated Low
HTTP header checking is fundamentally a read operation that queries and retrieves information about HTTP responses without modifying or executing anything. While the server context suggests offensive security capabilities, this specific tool appears to be an information-gathering utility. The empty description lowers confidence, but the name strongly indicates a passive Read operation typical of reconnaissance.
From the tool's definition Tool name 'check_http_headers' indicates inspection/retrieval of HTTP header data. Description is empty, limiting confidence.
Attacks that exploit this kind of access
The rule that runs check_http_headers 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 check_http_headers, this is the rule to start with:
check_http_headers 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 check_http_headers call is checked against it from then on.
Questions about check_http_headers
check_http_headers 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 check_http_headers: 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.
check_http_headers 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 check_http_headers 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 check_http_headers. 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.
check_http_headers 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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