Discover which Twitter users are in the Community Archive. Can filter by username to find specific people.
AI agents call discover-users to retrieve information from Community Archive MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries metadata about users present in an archived dataset. It performs read-only discovery operations with no side effects, no data modification, and no code execution. The ability to filter results does not elevate this beyond a Read category. Severity is low given it only accesses preserved public archival data with no downstream operational impact.
From the tool's definition Tool enables 'searching and retrieving' and 'discover which Twitter users are in the Community Archive' with optional filtering by username. No modification, deletion, or execution capabilities are described.
Attacks that exploit this kind of access
Discover which Twitter users are in the Community Archive. Can filter by username to find specific people. It is categorised as a Read tool in the Community Archive MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Community Archive MCP Server MCP server in PolicyLayer and add a rule for discover-users: 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 Community Archive MCP Server. Nothing to install.
discover-users 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 discover-users 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 discover-users. 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.
discover-users is provided by the Community Archive MCP Server MCP server (vivalapanda/archive-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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