List email and messaging history for a candidate. Use is_scheduled=1 to filter only pending scheduled messages.
AI agents call hires_list_candidate_messages to retrieve information from 100Hires 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 existing message data without creating, modifying, deleting, or triggering any side effects. It is a straightforward read operation with minimal blast radius if misused by an AI agent—the worst outcome would be information disclosure of candidate communications.
From the tool's definition Tool name contains 'list' and description states 'List email and messaging history for a candidate' with optional filtering by is_scheduled parameter. No modification, deletion, or execution of external operations occurs.
Attacks that exploit this kind of access
List email and messaging history for a candidate. Use is_scheduled=1 to filter only pending scheduled messages. It is categorised as a Read tool in the 100Hires MCP Server MCP Server, which means it retrieves data without modifying state.
Register the 100Hires MCP Server MCP server in PolicyLayer and add a rule for hires_list_candidate_messages: 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 100Hires MCP Server. Nothing to install.
hires_list_candidate_messages 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 hires_list_candidate_messages 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 hires_list_candidate_messages. 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.
hires_list_candidate_messages is provided by the 100Hires MCP Server MCP server (100hires/mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
hires_list_candidate_messages is one line of 100Hires MCP Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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