[Bug]: Stream error: error decoding response body

[zhangshican]

Prerequisites

• I have searched existing issues to avoid duplicates
• I am using the latest version of oh-my-opencode
• I have read the documentation

Bug Description

AI_TypeValidationError: Type validation failed: Value: {"error":"Stream error: error decoding response body"}.
Error message: [
{
"code": "invalid_union",
"errors": [],
"note": "No matching discriminator",
"discriminator": "type",
"path": [
"type"
],
"message": "Invalid input"
}
]

Steps to Reproduce

Expected Behavior

Fix

Actual Behavior

creat skill

Doctor Output

Installation
────────────────────────────────────────
  ✓ OpenCode Installation → 1.1.37
  ✓ Plugin Registration → Registered

Configuration
────────────────────────────────────────
  ✓ Configuration Validity → Valid JSON config
  ✓ Model Resolution → 9 agents, 7 categories (4 overrides), 2350 available

Authentication
────────────────────────────────────────
  ✓ Anthropic (Claude) Auth → Auth plugin available
  ✓ OpenAI (ChatGPT) Auth → Auth plugin available
  ✓ Google (Gemini) Auth → Auth plugin available

Dependencies
────────────────────────────────────────
  ✓ AST-Grep CLI → installed
  ✓ AST-Grep NAPI → installed
  ⚠ Comment Checker → Not installed (optional)

Tools & Servers
────────────────────────────────────────
  ⚠ GitHub CLI → Not installed (optional)
  ✓ LSP Servers → 1/4 servers available
  ✓ Built-in MCP Servers → 2 built-in servers enabled
  ○ User MCP Configuration → No user MCP configuration found

Updates
────────────────────────────────────────
  ✓ Version Status → Up to date (3.1.4)

Summary
────────────────────────────────────────

  12 passed, 0 failed, 2 warnings, 1 skipped
  Total: 15 checks in 1948ms

⚠ All systems operational with warnings.

Error Logs

Configuration

Additional Context

No response

Operating System

macOS

OpenCode Version

3.1.4

[code-yeongyu]

This Stream error: error decoding response body is a known issue with Ollama streaming NDJSON responses.

Root Cause: Ollama returns NDJSON (newline-delimited JSON) when stream: true, but the SDK expects single JSON.

Immediate Workaround:
Disable streaming for your Ollama models in your config:

{
  "agents": {
    "sisyphus": {
      "model": "ollama/your-model",
      "stream": false
    }
  }
}

Documentation: PR #1197 adds a troubleshooting guide for this issue. Once merged, see docs/troubleshooting/ollama-streaming-issue.md for details.

Can you confirm if setting stream: false resolves the issue for you?

[code-yeongyu]

Not our bug — Ollama upstream. Ollama returns NDJSON when stream: true, but SDK expects single JSON. Workaround: set "stream": false for Ollama models in config. See PR #1197 for troubleshooting guide. Closing.