diff --git a/.github/workflows/shared/opencode.md b/.github/workflows/shared/opencode.md
index 28ca6a123c..29bb874514 100644
--- a/.github/workflows/shared/opencode.md
+++ b/.github/workflows/shared/opencode.md
@@ -74,7 +74,7 @@ engine:
     - name: Run OpenCode
       id: opencode
       run: |
-        opencode run "$(cat "$GH_AW_PROMPT")" --model "${GH_AW_AGENT_MODEL}" --print-logs
+        opencode run "$(cat "$GH_AW_PROMPT")" --model "${GH_AW_AGENT_MODEL}" --print-logs --log-level DEBUG --format json
       env:
         GH_AW_AGENT_MODEL: ${{ env.GH_AW_AGENT_MODEL }}
         GH_AW_PROMPT: ${{ env.GH_AW_PROMPT }}
@@ -126,7 +126,10 @@ OpenCode automatically integrates with MCP servers configured in your workflow:
 - The workflow will install opencode-ai npm package using version from `GH_AW_AGENT_VERSION` env var
 - `jq` is installed for JSON transformation between MCP config formats
 - The prompt file is read directly in the Run OpenCode step using command substitution
-- OpenCode is executed in non-interactive mode with logs printed to stderr
+- OpenCode is executed with enhanced logging:
+  - `--print-logs`: All logs printed to stderr for real-time visibility
+  - `--log-level DEBUG`: Maximum log verbosity for troubleshooting
+  - `--format json`: Structured JSON output for programmatic parsing
 - Output is captured in the agent log file
 
 **Environment Variables:**
diff --git a/.github/workflows/smoke-opencode.lock.yml b/.github/workflows/smoke-opencode.lock.yml
index f972d4ad41..4a6dc9fd1f 100644
--- a/.github/workflows/smoke-opencode.lock.yml
+++ b/.github/workflows/smoke-opencode.lock.yml
@@ -880,7 +880,7 @@ jobs:
         run: |
           set -o pipefail
                     # Execute OpenCode CLI with prompt from file
-                    opencode run "$(cat /tmp/gh-aw/aw-prompts/prompt.txt)" --print-logs${GH_AW_MODEL_AGENT_OPENCODE:+ --model "$GH_AW_MODEL_AGENT_OPENCODE"} 2>&1 | tee /tmp/gh-aw/agent-stdio.log
+                    opencode run "$(cat /tmp/gh-aw/aw-prompts/prompt.txt)" --print-logs --log-level DEBUG --format json${GH_AW_MODEL_AGENT_OPENCODE:+ --model "$GH_AW_MODEL_AGENT_OPENCODE"} 2>&1 | tee /tmp/gh-aw/agent-stdio.log
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GH_AW_MCP_CONFIG: /tmp/gh-aw/mcp-config/mcp-servers.json
@@ -1209,7 +1209,7 @@ jobs:
         run: |
           set -o pipefail
                     # Execute OpenCode CLI with prompt from file
-                    opencode run "$(cat /tmp/gh-aw/aw-prompts/prompt.txt)" --print-logs${GH_AW_MODEL_DETECTION_OPENCODE:+ --model "$GH_AW_MODEL_DETECTION_OPENCODE"} 2>&1 | tee /tmp/gh-aw/threat-detection/detection.log
+                    opencode run "$(cat /tmp/gh-aw/aw-prompts/prompt.txt)" --print-logs --log-level DEBUG --format json${GH_AW_MODEL_DETECTION_OPENCODE:+ --model "$GH_AW_MODEL_DETECTION_OPENCODE"} 2>&1 | tee /tmp/gh-aw/threat-detection/detection.log
         env:
           ANTHROPIC_API_KEY: ${{ secrets.ANTHROPIC_API_KEY }}
           GH_AW_MODEL_DETECTION_OPENCODE: ${{ vars.GH_AW_MODEL_DETECTION_OPENCODE || '' }}
diff --git a/pkg/cli/completions_test.go b/pkg/cli/completions_test.go
index ddb4e0b4ee..d364f01daf 100644
--- a/pkg/cli/completions_test.go
+++ b/pkg/cli/completions_test.go
@@ -243,7 +243,7 @@ func TestCompleteEngineNames(t *testing.T) {
 		{
 			name:       "empty prefix returns all engines",
 			toComplete: "",
-			wantLen:    4, // copilot, claude, codex, custom
+			wantLen:    5, // copilot, claude, codex, custom, opencode
 		},
 		{
 			name:       "c prefix returns claude, codex, copilot, custom",
diff --git a/pkg/constants/constants_test.go b/pkg/constants/constants_test.go
index 7ae4d9f3b7..4c5e4b260c 100644
--- a/pkg/constants/constants_test.go
+++ b/pkg/constants/constants_test.go
@@ -283,7 +283,7 @@ func TestVersionConstants(t *testing.T) {
 		{"DefaultClaudeCodeVersion", DefaultClaudeCodeVersion, "2.1.6"},
 		{"DefaultCopilotVersion", DefaultCopilotVersion, "0.0.381"},
 		{"DefaultCodexVersion", DefaultCodexVersion, "0.80.0"},
-		{"DefaultOpenCodeVersion", DefaultOpenCodeVersion, "0.15.12"},
+		{"DefaultOpenCodeVersion", DefaultOpenCodeVersion, "0.15.13"},
 		{"DefaultGitHubMCPServerVersion", DefaultGitHubMCPServerVersion, "v0.28.1"},
 		{"DefaultMCPGatewayVersion", DefaultMCPGatewayVersion, "v0.0.56"},
 		{"DefaultSandboxRuntimeVersion", DefaultSandboxRuntimeVersion, "0.0.26"},
diff --git a/pkg/workflow/opencode_engine.go b/pkg/workflow/opencode_engine.go
index 9956622415..bdca6041c0 100644
--- a/pkg/workflow/opencode_engine.go
+++ b/pkg/workflow/opencode_engine.go
@@ -148,6 +148,12 @@ func (e *OpenCodeEngine) GetExecutionSteps(workflowData *WorkflowData, logFile s
 	// Add print-logs flag for enhanced debugging output
 	opencodeArgs = append(opencodeArgs, "--print-logs")
 
+	// Add log-level DEBUG for maximum log verbosity
+	opencodeArgs = append(opencodeArgs, "--log-level", "DEBUG")
+
+	// Add format json for structured JSON output
+	opencodeArgs = append(opencodeArgs, "--format", "json")
+
 	// Add custom args from engine configuration before the prompt
 	if workflowData.EngineConfig != nil && len(workflowData.EngineConfig.Args) > 0 {
 		opencodeArgs = append(opencodeArgs, workflowData.EngineConfig.Args...)