---
title: A2A-SIN-Code-plugin Agent
sdk: docker
app_port: 7860
pinned: false
---

# A2A-SIN-Code-plugin Agent

**Status:** 🚀 Production Ready  
**Version:** 1.0.0  
**Team:** Team - Coder  
**Manager:** SIN-Zeus

---

## 🎯 Overview

A2A-SIN-Code-plugin is an **autonomous cloud coder** that receives tasks via A2A protocol and executes them using the `opencode` CLI. It runs on Hugging Face Spaces (CPU-Basic) and works exclusively on the OpenSIN-Code repository.

## 🚀 Features

- **A2A Protocol:** Full JSON-RPC 2.0 compliance
- **opencode CLI:** Uses Antigravity-powered opencode for all code generation
- **GitHub Integration:** Automatic commits to assigned branches
- **Gradio UI:** Operator dashboard for manual task submission and monitoring
- **Health Checks:** `/health` endpoint for fleet monitoring
- **Type-Specific:** Specialized prompts for plugin tasks

## 🏗️ Architecture

### Request Flow
```
SIN-Zeus → A2A JSON-RPC → Gradio/FastAPI → opencode CLI → GitHub Commit
```

### Components
- **FastAPI Backend:** `/a2a/v1` endpoint, health checks, agent-card
- **Gradio Frontend:** Manual task submission, status, logs
- **Coder Agent:** Task queue, opencode integration, GitHub ops

### Environment Variables
| Variable | Required | Description |
|----------|----------|-------------|
| `OPENCODE_API_KEY` | Yes | OpenCode API key |
| `GITHUB_TOKEN` | Yes | GitHub PAT with repo access |
| `HF_TOKEN` | No | Hugging Face token (for deployment) |
| `TELEGRAM_TOKEN` | No | Telegram notifications |

## 📡 Interfaces

| Interface | URL | Protocol |
|-----------|-----|----------|
| **Gradio UI** | Space URL | HTTP |
| **A2A API** | `/a2a/v1` | JSON-RPC 2.0 |
| **Health** | `/health` | HTTP JSON |
| **Agent Card** | `/.well-known/agent-card.json` | JSON |
| **Dashboard** | https://a2a.delqhi.com/agents/sin-code-plugin | Web |

## 🔧 Usage

### Via A2A (Standard)
```bash
curl -X POST https://delqhi-a2a-sin-code-plugin.hf.space/a2a/v1 \
  -H 'content-type: application/json' \
  -d '{
    "jsonrpc": "2.0",
    "id": 1,
    "method": "message/send",
    "params": {
      "message": {
        "role": "user",
        "parts": [
          {
            "type": "data",
            "data": {
              "description": "Fix the plugin manifest schema validation",
              "type": "plugin",
              "issue_number": 1065
            }
          }
        ]
      }
    }
  }'
```

### Via Gradio UI
1. Open the Space URL
2. Fill in task description, select type, enter branch name
3. Click "🚀 Submit Task"
4. View status and logs

## 📊 Sample Task Flow

1. **Receive Task:** A2A message with description "Create a new MCP for WhatsApp"
2. **Generate Code:** Call `opencode run` with specialized prompt
3. **Create Files:** Agent writes files to repository (through opencode)
4. **Commit:** Automatic commit to target branch with issue reference
5. **Report:** Status updated in task store, can create PR via separate step

## 🛠️ Supported Task Types

| Type | Description |
|------|-------------|
| `plugin` | OpenCode plugins (MCP servers) |
| `command` | CLI commands (sin-* binaries) |
| `tool` | Reusable utility functions |
| `backend` | API, database, business logic |
| `frontend` | UI components, Next.js, React |
| `fullstack` | Both frontend + backend |

## 📝 Development

### Local Testing
```bash
# Prepare environment
export OPENCODE_API_KEY="your-key"
export GITHUB_TOKEN="your-token"
export REPO_DIR="/path/to/OpenSIN-Code"

# Run locally
python app.py

# Access at http://localhost:7860
```

### Building Docker Image
```bash
docker build -t delqhi/a2a-sin-code-plugin:latest .
docker run -p 7860:7860 -e OPENCODE_API_KEY -e GITHUB_TOKEN delqhi/a2a-sin-code-plugin
```

## 🔐 Security

- **API Keys:** Use Hugging Face Space secrets, never hardcoded
- **GitHub Token:** Scoped to specific repository (OpenSIN-Code)
- **Network:** Outbound only to opencode API and GitHub
- **No Persistent Storage:** Ephemeral filesystem (HF Space default)

## 📈 Monitoring

- **Gradio UI:** Real-time task status and logs
- **HF Space:** Logs via HF dashboard
- **Dashboard:** https://a2a.delqhi.com/agents/sin-code-plugin
- **Telegram:** Optional notifications

## 🚀 Deployment

### To Hugging Face Spaces

```bash
# Create Space (CPU-Basic required)
huggingface-cli repo create delqhi-a2a-sin-code-plugin --type space --space-sdk docker

# Set secrets
huggingface-cli variable set OPENCODE_API_KEY "$OPENCODE_API_KEY" --repo delqhi-a2a-sin-code-plugin --type space
huggingface-cli variable set GITHUB_TOKEN "$GITHUB_TOKEN" --repo delqhi-a2a-sin-code-plugin --type space

# Push code
git init
git remote add origin https://huggingface.co/spaces/delqhi/delqhi-a2a-sin-code-plugin
git add .
git commit -m "Deploy A2A-SIN-Code-plugin v1.0.0"
git push --force origin main

# Set hardware to CPU-Basic (via HF UI or API)
```

**IMPORTANT:** Set hardware to `cpu-basic` in Space settings. Never use GPU/ZeroGPU for coding agents.

## 📞 Support

- **Dashboard:** https://a2a.delqhi.com/agents/sin-code-plugin
- **Docs Tab:** [Google Docs](https://docs.google.com/document/d/1RtoHn4I0GntuEEOHHkqoh_dMuGzgMwQz7_8oxAOpQbw/edit?tab=t.t.56da546b17b8ef18)
- **Team Manager:** SIN-Zeus

---

**Last Updated:** 2026-04-07  
**Agent:** A2A-SIN-Code-plugin v1.0.0
**Owner:** Team - Coder / SIN-Zeus