diff --git a/packages/opencode/src/acp/agent.ts b/packages/opencode/src/acp/agent.ts
index 9512406b3d47..44750a77c794 100644
--- a/packages/opencode/src/acp/agent.ts
+++ b/packages/opencode/src/acp/agent.ts
@@ -318,6 +318,10 @@ export namespace ACP {
                       title: part.tool,
                       locations: toLocations(part.tool, part.state.input),
                       rawInput: part.state.input,
+                      // Stream partial output during execution (e.g., bash stdout)
+                      rawOutput: part.state.metadata?.output
+                        ? { output: part.state.metadata.output }
+                        : undefined,
                     },
                   })
                   .catch((error) => {
@@ -831,6 +835,10 @@ export namespace ACP {
                     title: part.tool,
                     locations: toLocations(part.tool, part.state.input),
                     rawInput: part.state.input,
+                    // Stream partial output during execution (e.g., bash stdout)
+                    rawOutput: part.state.metadata?.output
+                      ? { output: part.state.metadata.output }
+                      : undefined,
                   },
                 })
                 .catch((err) => {