获取可用的音色列表，包括系统音色和用户创建的克隆/设计音色。系统音色可直接使用，用户音色需先创建
Part of the xSkill AI MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents call list_voices to retrieve information from xSkill AI without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though list_voices only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
tools:
list_voices:
rules:
- action: allowSee the full xSkill AI policy for all 19 tools.
Agents calling read-class tools like list_voices have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Read risk category across the catalogue. The same policy patterns (rate-limit, allow) apply to each.
获取可用的音色列表，包括系统音色和用户创建的克隆/设计音色。系统音色可直接使用，用户音色需先创建. It is categorised as a Read tool in the xSkill AI MCP Server, which means it retrieves data without modifying state.
Add a rule in your Intercept YAML policy under the tools section for list_voices. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the xSkill AI MCP server.
list_voices 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 list_voices rule in your Intercept 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 Intercept policy for list_voices. 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.
list_voices is provided by the xSkill AI MCP server (hexiaochun/xskill-ai). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic policy on every MCP tool call. Per-identity grants. Full audit log.