diff --git a/packages/opencode/src/tool/read.ts b/packages/opencode/src/tool/read.ts
index 501a8c97ed3f..cb406c9c6337 100644
--- a/packages/opencode/src/tool/read.ts
+++ b/packages/opencode/src/tool/read.ts
@@ -12,6 +12,7 @@ import DESCRIPTION from "./read.txt"
 import { Instance } from "../project/instance"
 import { assertExternalDirectoryEffect } from "./external-directory"
 import { Instruction } from "../session/instruction"
+import type { Provider } from "../provider/provider"
 
 const DEFAULT_READ_LIMIT = 2000
 const MAX_LINE_LENGTH = 2000
@@ -149,7 +150,15 @@ export const ReadTool = Tool.define(
       const isImage = mime.startsWith("image/") && mime !== "image/svg+xml" && mime !== "image/vnd.fastbidsheet"
       const isPdf = mime === "application/pdf"
       if (isImage || isPdf) {
+        const model = ctx.extra?.model as Provider.Model | undefined
+        const supportsVision = model?.capabilities.input.image ?? false
+        const supportsPdf = model?.capabilities.input.pdf ?? false
         const msg = `${isImage ? "Image" : "PDF"} read successfully`
+
+        if ((isImage && !supportsVision) || (isPdf && !supportsPdf)) {
+          return yield* Effect.fail(new Error(`This model does not support ${isImage ? "image" : "pdf"} input, please try other tools`))
+        }
+
         return {
           title,
           output: msg,