From 5ffcde9dba64760286d43dbb1c97da7566c44178 Mon Sep 17 00:00:00 2001
From: opencode <opencode@sst.dev>
Date: Thu, 11 Dec 2025 20:09:20 +0000
Subject: release: v1.0.150

---
 packages/plugin/package.json | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

(limited to 'packages/plugin')

diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index fc474d55c..42841ec40 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package.json",
   "name": "@opencode-ai/plugin",
-  "version": "1.0.149",
+  "version": "1.0.150",
   "type": "module",
   "scripts": {
     "typecheck": "tsgo --noEmit",
@@ -24,4 +24,4 @@
     "typescript": "catalog:",
     "@typescript/native-preview": "catalog:"
   }
-}
+}
\ No newline at end of file
-- 
cgit v1.2.3


From fc9dfd054ab6ad35afe0b867bbf789f0e62c31e6 Mon Sep 17 00:00:00 2001
From: GitHub Action <action@github.com>
Date: Thu, 11 Dec 2025 20:14:20 +0000
Subject: chore: format code

---
 packages/plugin/package.json | 2 +-
 packages/sdk/js/package.json | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

(limited to 'packages/plugin')

diff --git a/packages/plugin/package.json b/packages/plugin/package.json
index 42841ec40..3256079a5 100644
--- a/packages/plugin/package.json
+++ b/packages/plugin/package.json
@@ -24,4 +24,4 @@
     "typescript": "catalog:",
     "@typescript/native-preview": "catalog:"
   }
-}
\ No newline at end of file
+}
diff --git a/packages/sdk/js/package.json b/packages/sdk/js/package.json
index 4494c2081..0ff29129e 100644
--- a/packages/sdk/js/package.json
+++ b/packages/sdk/js/package.json
@@ -29,4 +29,4 @@
   "publishConfig": {
     "directory": "dist"
   }
-}
\ No newline at end of file
+}
-- 
cgit v1.2.3


From 2a9269c3471f95a4c39884e03e56d242854b6b5e Mon Sep 17 00:00:00 2001
From: Jorgen Henriksen <56941036+jorgenwh@users.noreply.github.com>
Date: Thu, 11 Dec 2025 21:38:45 +0100
Subject: add experimental.chat.messages.transform hook (#5207)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
---
 packages/opencode/src/session/prompt.ts | 40 +++++++++++++++++++--------------
 packages/plugin/src/index.ts            | 10 +++++++++
 2 files changed, 33 insertions(+), 17 deletions(-)

(limited to 'packages/plugin')

diff --git a/packages/opencode/src/session/prompt.ts b/packages/opencode/src/session/prompt.ts
index 76c702982..d31153331 100644
--- a/packages/opencode/src/session/prompt.ts
+++ b/packages/opencode/src/session/prompt.ts
@@ -29,7 +29,7 @@ import PROMPT_PLAN from "../session/prompt/plan.txt"
 import BUILD_SWITCH from "../session/prompt/build-switch.txt"
 import MAX_STEPS from "../session/prompt/max-steps.txt"
 import { defer } from "../util/defer"
-import { mergeDeep, pipe } from "remeda"
+import { clone, mergeDeep, pipe } from "remeda"
 import { ToolRegistry } from "../tool/registry"
 import { Wildcard } from "../util/wildcard"
 import { MCP } from "../mcp"
@@ -520,28 +520,33 @@ export namespace SessionPrompt {
         })
       }
 
-      const messages = [
+      // Deep copy message history so that modifications made by plugins do not
+      // affect the original messages
+      const sessionMessages = clone(
+        msgs.filter((m) => {
+          if (m.info.role !== "assistant" || m.info.error === undefined) {
+            return true
+          }
+          if (
+            MessageV2.AbortedError.isInstance(m.info.error) &&
+            m.parts.some((part) => part.type !== "step-start" && part.type !== "reasoning")
+          ) {
+            return true
+          }
+          return false
+        }),
+      )
+
+      await Plugin.trigger("experimental.chat.messages.transform", {}, { messages: sessionMessages })
+
+      const messages: ModelMessage[] = [
         ...system.map(
           (x): ModelMessage => ({
             role: "system",
             content: x,
           }),
         ),
-        ...MessageV2.toModelMessage(
-          msgs.filter((m) => {
-            if (m.info.role !== "assistant" || m.info.error === undefined) {
-              return true
-            }
-            if (
-              MessageV2.AbortedError.isInstance(m.info.error) &&
-              m.parts.some((part) => part.type !== "step-start" && part.type !== "reasoning")
-            ) {
-              return true
-            }
-
-            return false
-          }),
-        ),
+        ...MessageV2.toModelMessage(sessionMessages),
         ...(isLastStep
           ? [
               {
@@ -551,6 +556,7 @@ export namespace SessionPrompt {
             ]
           : []),
       ]
+
       const result = await processor.process({
         onError(error) {
           log.error("stream error", {
diff --git a/packages/plugin/src/index.ts b/packages/plugin/src/index.ts
index f00e90482..57ca75d60 100644
--- a/packages/plugin/src/index.ts
+++ b/packages/plugin/src/index.ts
@@ -6,6 +6,7 @@ import type {
   Provider,
   Permission,
   UserMessage,
+  Message,
   Part,
   Auth,
   Config,
@@ -175,6 +176,15 @@ export interface Hooks {
       metadata: any
     },
   ) => Promise<void>
+  "experimental.chat.messages.transform"?: (
+    input: {},
+    output: {
+      messages: {
+        info: Message
+        parts: Part[]
+      }[]
+    },
+  ) => Promise<void>
   "experimental.text.complete"?: (
     input: { sessionID: string; messageID: string; partID: string },
     output: { text: string },
-- 
cgit v1.2.3