diff --git a/packages/opencode/src/file/index.ts b/packages/opencode/src/file/index.ts
index 81f2251a..457890d5 100644
--- a/packages/opencode/src/file/index.ts
+++ b/packages/opencode/src/file/index.ts
@@ -1,7 +1,7 @@
 import { z } from "zod"
 import { Bus } from "../bus"
 import { $ } from "bun"
-import { createPatch } from "diff"
+import { formatPatch, structuredPatch } from "diff"
 import path from "path"
 import fs from "fs"
 import ignore from "ignore"
@@ -28,6 +28,7 @@ export namespace File {
     .object({
       name: z.string(),
       path: z.string(),
+      absolute: z.string(),
       type: z.enum(["file", "directory"]),
       ignored: z.boolean(),
     })
@@ -36,6 +37,34 @@ export namespace File {
     })
   export type Node = z.infer<typeof Node>
 
+  export const Content = z
+    .object({
+      content: z.string(),
+      diff: z.string().optional(),
+      patch: z
+        .object({
+          oldFileName: z.string(),
+          newFileName: z.string(),
+          oldHeader: z.string().optional(),
+          newHeader: z.string().optional(),
+          hunks: z.array(
+            z.object({
+              oldStart: z.number(),
+              oldLines: z.number(),
+              newStart: z.number(),
+              newLines: z.number(),
+              lines: z.array(z.string()),
+            }),
+          ),
+          index: z.string().optional(),
+        })
+        .optional(),
+    })
+    .openapi({
+      ref: "FileContent",
+    })
+  export type Content = z.infer<typeof Content>
+
   export const Event = {
     Edited: Bus.event(
       "file.edited",
@@ -127,13 +156,14 @@ export namespace File {
       const diff = await $`git diff ${file}`.cwd(Instance.directory).quiet().nothrow().text()
       if (diff.trim()) {
         const original = await $`git show HEAD:${file}`.cwd(Instance.directory).quiet().nothrow().text()
-        const patch = createPatch(file, original, content, "old", "new", {
+        const diff = structuredPatch(file, file, original, content, "old", "new", {
           context: Infinity,
         })
-        return { type: "patch", content: patch }
+        const patch = formatPatch(diff)
+        return { content, patch, diff }
       }
     }
-    return { type: "raw", content }
+    return { content }
   }
 
   export async function list(dir?: string) {
@@ -157,6 +187,7 @@ export namespace File {
       nodes.push({
         name: entry.name,
         path: relativePath,
+        absolute: fullPath,
         type,
         ignored: ignored(type === "directory" ? relativePath + "/" : relativePath),
       })
diff --git a/packages/opencode/src/server/server.ts b/packages/opencode/src/server/server.ts
index 01ade6d1..9091f050 100644
--- a/packages/opencode/src/server/server.ts
+++ b/packages/opencode/src/server/server.ts
@@ -974,12 +974,7 @@ export namespace Server {
             description: "File content",
             content: {
               "application/json": {
-                schema: resolver(
-                  z.object({
-                    type: z.enum(["raw", "patch"]),
-                    content: z.string(),
-                  }),
-                ),
+                schema: resolver(File.Content),
               },
             },
           },
diff --git a/packages/opencode/src/session/index.ts b/packages/opencode/src/session/index.ts
index 10e06acd..1bee5442 100644
--- a/packages/opencode/src/session/index.ts
+++ b/packages/opencode/src/session/index.ts
@@ -527,10 +527,10 @@ export namespace Session {
                         break
                       }
                     }
-                    offset = Math.max(start - 2, 0)
-                    if (end) {
-                      limit = end - offset + 2
-                    }
+                  }
+                  offset = Math.max(start - 1, 0)
+                  if (end) {
+                    limit = end - offset
                   }
                 }
                 const args = { filePath, offset, limit }
diff --git a/packages/sdk/js/src/gen/types.gen.ts b/packages/sdk/js/src/gen/types.gen.ts
index c56ea309..8befce1c 100644
--- a/packages/sdk/js/src/gen/types.gen.ts
+++ b/packages/sdk/js/src/gen/types.gen.ts
@@ -1117,10 +1117,30 @@ export type Symbol = {
 export type FileNode = {
   name: string
   path: string
+  absolute: string
   type: "file" | "directory"
   ignored: boolean
 }
 
+export type FileContent = {
+  content: string
+  diff?: string
+  patch?: {
+    oldFileName: string
+    newFileName: string
+    oldHeader?: string
+    newHeader?: string
+    hunks: Array<{
+      oldStart: number
+      oldLines: number
+      newStart: number
+      newLines: number
+      lines: Array<string>
+    }>
+    index?: string
+  }
+}
+
 export type File = {
   path: string
   added: number
@@ -1893,10 +1913,7 @@ export type FileReadResponses = {
   /**
    * File content
    */
-  200: {
-    type: "raw" | "patch"
-    content: string
-  }
+  200: FileContent
 }
 
 export type FileReadResponse = FileReadResponses[keyof FileReadResponses]