Extract potential credentials (HTTP Basic Auth, FTP, Telnet) from a PCAP file for LLM analysis
AI agents call extract_credentials to retrieve information from WireMCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a Read operation because it retrieves/queries sensitive data (credentials) from PCAP files with no side effects or modifications to the data or system. However, severity is high rather than low because: (1) the blast radius of exposing extracted credentials to an AI agent is substantial—an agent could use them for unauthorized access, lateral movement, or credential theft; (2) credentials are inherently…
From the tool's definition The tool 'extract_credentials' from network traffic analysis (PCAP files) is described as extracting potential credentials for analysis. The verb 'extract' and the passive framing 'for LLM analysis' indicate data retrieval without modification.
Documented attack patterns abuse exactly the kind of access extract_credentials gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and WireMCP, and nothing reaches the server without passing your rules. This is the rule we recommend for extract_credentials:
{
"version": "1",
"default": "deny",
"tools": {
"extract_credentials": {}
}
}extract_credentials is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Extract potential credentials (HTTP Basic Auth, FTP, Telnet) from a PCAP file for LLM analysis. It is categorised as a Read tool in the WireMCP MCP Server, which means it retrieves data without modifying state.
Register the Wire MCP server in PolicyLayer and add a rule for extract_credentials: 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 WireMCP. Nothing to install.
extract_credentials 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 extract_credentials 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 extract_credentials. 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.
extract_credentials is provided by the Wire MCP server (0xkoda/wiremcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 7 WireMCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
7 WireMCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.