生成问卷预览链接（无需签名），可在浏览器中预览问卷效果。创建问卷后推荐使用此工具返回预览地址。
Part of the Wjx MCP server. Enforce policies on this tool with Intercept, the open-source MCP proxy.
AI agents invoke build_preview_url to trigger processes or run actions in Wjx. Execute operations can have side effects beyond the immediate call -- triggering builds, sending notifications, or starting workflows. Rate limits and argument validation are essential to prevent runaway execution.
build_preview_url can trigger processes with real-world consequences. An uncontrolled agent might start dozens of builds, send mass notifications, or kick off expensive compute jobs. Intercept enforces rate limits and validates arguments to keep execution within safe bounds.
Execute tools trigger processes. Rate-limit and validate arguments to prevent unintended side effects.
tools:
build_preview_url:
rules:
- action: allow
rate_limit:
max: 10
window: 60
validate:
required_args: trueSee the full Wjx policy for all 58 tools.
Agents calling execute-class tools like build_preview_url have been implicated in these attack patterns. Read the full case and prevention policy for each:
Other tools in the Execute risk category across the catalogue. The same policy patterns (rate-limit, validate) apply to each.
build_preview_url is one of the high-risk operations in Wjx. For the full severity-focused view — only the high-risk tools with their recommended policies — see the breakdown for this server, or browse all high-risk tools across every MCP server.
生成问卷预览链接（无需签名），可在浏览器中预览问卷效果。创建问卷后推荐使用此工具返回预览地址。. It is categorised as a Execute tool in the Wjx MCP Server, which means it can trigger actions or run processes. Use rate limits and argument validation.
Add a rule in your Intercept YAML policy under the tools section for build_preview_url. You can allow, deny, rate-limit, or validate arguments. Then run Intercept as a proxy in front of the Wjx MCP server.
build_preview_url is a Execute tool with high risk. Execute tools should be rate-limited and have argument validation enabled.
Yes. Add a rate_limit block to the build_preview_url 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 build_preview_url. 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.
build_preview_url is provided by the Wjx MCP server (wjx-mcp-server). Intercept sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Open source. One binary. Zero dependencies.
npx -y @policylayer/intercept