---
id: "mnrumbmx-63sa0v"
name: "【避免指南】ext_call 调用时正确传入 plugin、tool、args 参数"
type: "feedback"
project: "null"
tags: [error, avoid, poster, ext_call]
created: "2026-04-09"
---
【下次这样做】调用 ext_call 时必须正确传入 plugin、tool、args 三个参数。错误原因：调用参数中包含错误的字符串 `</parameter` 导致 plugin 参数被错误解析为 `poster</parameter` 而非 `poster`，导致扩展插件无法定位。正确调用方式：ext_call({ plugin: "poster", tool: "export_poster_canvas", args: {filename: "foliko-zen-kong", format: "png", outputDir: "."} })