devagent-cli 3.3.0

A local autonomous coding agent CLI powered by Ollama.

🧠 DevAgent

A Lightweight Local Open-Source Miniature of Claude Code CLI

A production-grade local coding agent that finds bugs, writes patches, reviews its own code, and validates with tests — all offline, all local, zero API costs.

Quick Start • Architecture • Benchmarks • Roadmap • Contributing

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🛡️ Why DevAgent?

DevAgent is built on a "Safety-First" architecture for high-integrity developer infrastructure. Unlike chatbots that guess code, DevAgent is a local autonomous agent that operates within a strictly observed environment.

📊 Empirical Validation

We don't hide our limitations. DevAgent v3.2.3 has been stress-tested against real-world, "messy" repositories, providing a transparent Benchmark Report.

	Other Agents	DevAgent
Safety Isolation	❌	✅ Strict Sandbox Mode
Recovery	❌	✅ Git-native + Snapshot Rollback
Validation	❌	✅ Empirical Stress Tests
Transparency	❌	✅ Visible Failure Taxonomy
Privacy	❌	✅ 100% Local (Ollama)
Costs	💸	✅ Zero API Costs

Philosophy: Safety > Intelligence. Observability > Reasoning. Retrieval > Huge Context. Reliability > Hype.

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✨ Features

🔁 ReAct Loop — Thought → Action → Observation → Fix → Review → Test cycle

🧠 Planner — LLM generates an action plan before coding

🔍 Semantic Search — FAISS + sentence-transformers code retrieval

🔎 Code Search — ripgrep-powered with cross-platform fallback

📝 Self-Review — LLM critiques its own fixes, revises until approved

🩹 Patch Engine — Line-level unified diffs instead of full file rewrites

🧪 Test-Driven — Runs pytest after every fix, retries on failure

🏖️ Sandbox Mode — Agent works in an isolated copy, applies changes only on success

📊 Benchmarks — 5 built-in benchmark suites with automated evaluation

📈 Metrics — Latency, token estimates, retries, and performance tracking

📋 Full Audit Trail — Every step logged to logs/run.json

🔒 100% Offline — Runs on Ollama with small models (2-4 GB)

⚡ Low Resource — Works on RTX 3050 (4 GB VRAM) / 16 GB RAM

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🚀 Quick Start

Prerequisites

• Python 3.11+
• Ollama installed and running

Install & Setup

# 1. Clone
git clone https://github.com/VedantJadhav701/Developer-Code-Intelligence-Agent.git
cd Developer-Code-Intelligence-Agent

# 2. Install
pip install devagent-cli  # (Coming soon to PyPI)
# Or locally: pip install -e .

# 3. Verify System (CRITICAL)
# This checks your Python environment, Ollama connection, and dependencies
devagent doctor

# 4. Pull the model
ollama pull qwen2.5-coder:3b

# 5. Run!
devagent run --task "Fix the divide-by-zero bug" --root ./demo_project

CLI Subcommands

Command	Description
devagent run	Execute a coding task on a project
devagent benchmark	Run the automated benchmark suite
devagent doctor	Check system health and dependencies
devagent models	List available Ollama models
devagent version	Show current version

🛡️ Reliability & Safety

DevAgent is built for production-grade reliability:

• Isolated Sandbox: Agent works in sandbox_workspace/, keeping your source clean until success.
• Auto-Snapshot: Creates a safety restore point before every execution.
• Instant Rollback: Revert agent changes with devagent rollback.
• Traceability: Every thought and tool call is logged to logs/run.json.
• Environment Awareness: Detects and uses your project's Python environment automatically.

🕹️ Interactive Mode

Run with --interactive (or -i) to review colorized diffs before they are applied to your project.

devagent run --task "Fix bug" --interactive

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🏗️ Architecture

graph TD
    CLI[DevAgent CLI] --> Orchestrator[ReAct Orchestrator]
    Orchestrator --> Safety[Safety Manager: Snapshots]
    Orchestrator --> Memory[Working Memory]
    Orchestrator --> Retrieval[Semantic Retrieval FAISS]
    Orchestrator --> Tools[Tool Suite: pytest, ripgrep, git]
    Orchestrator --> Reviewer[Self-Review Loop]
    Reviewer --> Patch[Surgical Patch Engine]
    Patch --> Sandbox[Sandbox Environment]

No API keys. No sign-ups. No cloud.

Optional: Enable Semantic Search

pip install faiss-cpu sentence-transformers

Without these, DevAgent falls back to keyword search — still fully functional.

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🎬 Demo

 ____              _                    _
|  _ \  _____   __/ \   __ _  ___ _ __ | |_
| | | |/ _ \ \ / / _ \ / _` |/ _ \ '_ \| __|
| |_| |  __/\ V / ___ \ (_| |  __/ | | | |_
|____/ \___| \_/_/   \_\__, |\___|_| |_|\__|
                       |___/

+==========================================================+
|        DEVELOPER CODE INTELLIGENCE AGENT                 |
|        Model: qwen2.5-coder:3b                          |
|        Sandbox: OFF                                      |
+==========================================================+

  [PLAN] LIKELY_FILES: calculator.py
  1. search_code: divide
  2. read_file: calculator.py
  3. run_tests

  ----------------------------------------
  ITERATION 1/5
  ----------------------------------------
  [TOOL] Executing: search_code(divide)
  >> Found: calculator.py:10:def divide(a, b)
  [REVIEW] #1: APPROVED
  >> Tests: 5 passed ✓

  [OK]  AGENT COMPLETED SUCCESSFULLY

  Status:     success
  Steps used: 1/5
  Patches:    1
  Time:       8.2s

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🏗️ Architecture

                    ┌─────────────────────────────┐
                    │       CLI (main.py)          │
                    │  --task --root --model       │
                    │  --sandbox --benchmark       │
                    │  --auto-commit --auto-push   │
                    └──────────┬──────────────────┘
                               │
                    ┌──────────▼──────────────────┐
                    │     Planner Layer            │
                    │  Identifies files + strategy │
                    └──────────┬──────────────────┘
                               │
                    ┌──────────▼──────────────────┐
                    │  Retrieval Layer (Memory)    │
                    │  FAISS + Sentence-Transformers│
                    │  Chunk → Embed → Top-K       │
                    └──────────┬──────────────────┘
                               │
                    ┌──────────▼──────────────────┐
                    │     ReAct Agent Loop         │
                    │                              │
                    │  1. THOUGHT   (LLM)          │
                    │  2. ACTION    (Tool)          │
                    │  3. OBSERVATION               │
                    │  4. FIX       (LLM)          │
                    │  5. REVIEW    (LLM)          │
                    │  6. PATCH     (Diff Engine)   │
                    │  7. TEST      (pytest)        │
                    │                              │
                    │  if FAIL → retry              │
                    │  if PASS → done ✓            │
                    └──┬──────────────┬───────────┘
                       │              │
              ┌────────▼──┐    ┌──────▼──────┐
              │   Tools   │    │   Ollama    │
              │           │    │  (Local)    │
              │ • search  │    │             │
              │ • semantic│    │ qwen2.5-    │
              │ • read    │    │  coder:3b   │
              │ • patch   │    │ phi3:mini   │
              │ • pytest  │    │ mistral:7b  │
              │ • flake8  │    │             │
              │ • git_diff│    └─────────────┘
              │ • sandbox │
              └───────────┘

9-Layer Architecture

Layer	Module	Purpose
1. CLI	main.py	Argument parsing, mode selection, banner
2. Planner	app/planner.py	Task interpretation, file identification
3. Retrieval	app/memory.py	FAISS index, semantic chunking, Top-K search
4. Tools	tools/*	8 real tools: search, semantic_search, read, write, test, lint, git, sandbox
5. Agent	app/agent.py	ReAct orchestration loop
6. Review	app/reviewer.py	Self-critique with APPROVED/REVISE
7. Validation	tools/test_runner.py	pytest + flake8 execution feedback
8. Logging	utils/logger.py	Structured JSON audit trail
9. Safety	app/sandbox.py	Isolated workspace, path validation

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📁 Project Structure

Developer-Code-Intelligence-Agent/
├── app/
│   ├── agent.py            # Core ReAct agent engine
│   ├── planner.py          # Task planning layer
│   ├── reviewer.py         # Self-review module
│   ├── llm.py              # Ollama integration
│   ├── memory.py           # FAISS retrieval + working memory
│   ├── patcher.py          # Unified diff patch engine
│   ├── sandbox.py          # Sandbox workspace manager
│   └── state.py            # Shared state dataclass
├── tools/
│   ├── search.py           # Code search (ripgrep + fallbacks)
│   ├── semantic_search.py  # FAISS semantic search
│   ├── file_ops.py         # Safe file read/write
│   ├── test_runner.py      # pytest runner
│   ├── linter.py           # flake8 linter
│   ├── git_tools.py        # Git diff/commit/push
│   └── benchmark_runner.py # Benchmark evaluation
├── utils/
│   ├── logger.py           # Structured JSON logger
│   ├── config.py           # Centralized configuration
│   └── metrics.py          # Performance metrics
├── benchmarks/
│   ├── divide_by_zero/     # Benchmark: zero division guard
│   ├── missing_validation/ # Benchmark: input validation
│   ├── syntax_error/       # Benchmark: syntax fix
│   ├── import_bug/         # Benchmark: wrong import
│   └── edge_case/          # Benchmark: empty list handling
├── demo_project/           # Sample buggy project
├── docs/
│   └── USER_GUIDE.md       # Full usage guide
├── main.py                 # CLI entry point
├── devagent.py             # Global CLI wrapper
├── devagent.bat            # Windows global shortcut
├── requirements.txt
├── CONTRIBUTING.md
├── CHANGELOG.md
├── CODE_OF_CONDUCT.md
├── SECURITY.md
├── LICENSE
└── README.md

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💻 CLI Reference

python main.py --task "TASK" --root ./project [OPTIONS]

Flag	Default	Description
--task, -t	(required)	The coding task for the agent
--root, -r	.	Project root directory
--model	qwen2.5-coder:3b	Any Ollama model
--max-steps, -m	5	Max ReAct iterations
--benchmark	off	Run benchmark suite
--sandbox	off	Run in isolated sandbox
--auto-commit	off	Git commit on success
--auto-push	off	Git push after commit
--verbose, -v	off	Verbose output

Examples

# Fix a specific bug
python main.py -t "Fix the TypeError in user_service.py" -r ./backend

# Run in sandbox mode (safe — doesn't touch real files until success)
python main.py -t "Fix divide-by-zero bug" -r ./project --sandbox

# Auto-commit changes on success
python main.py -t "Add input validation" -r ./api --auto-commit

# Use a stronger model
python main.py -t "Refactor auth middleware" -r ./server --model mistral:7b

# Run benchmarks
python main.py --benchmark

# More retries for complex tasks
python main.py -t "Make all tests pass" -r ./project --max-steps 10

📖 Full User Guide →

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📊 Benchmarks

DevAgent includes 5 built-in benchmarks to evaluate agent performance:

Benchmark	Bug Type	Difficulty
divide_by_zero	Missing guard clause	Easy
missing_validation	No input validation	Medium
syntax_error	Broken syntax	Medium
import_bug	Wrong module name	Easy
edge_case	Empty list crash	Medium

Run benchmarks:

python main.py --benchmark
python main.py --benchmark --model phi3:mini

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🔧 Supported Models

Model	Size	Speed	Quality	Best For
qwen2.5-coder:3b	1.9 GB	⚡ Fast	★★★★	Default — best for code
qwen2.5:3b	1.9 GB	⚡ Fast	★★★☆	General fallback
phi3:mini	2.2 GB	⚡ Fast	★★★☆	Good reasoning
qwen3:4b	2.5 GB	⚡ Fast	★★★★	Better understanding
gemma2:2b	1.6 GB	⚡⚡	★★☆☆	Ultra-low resource
mistral:7b	4.4 GB	🐢	★★★★★	Best quality (8GB+ RAM)

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🗺️ Roadmap

✅ Completed (v2.0)

• Core ReAct agent loop
• Self-review module
• Tool system (9 tools)
• Planner layer
• Semantic retrieval (FAISS)
• Patch engine (unified diffs)
• Sandbox mode
• Benchmark system (5 suites)
• Metrics + structured logging
• Git integration
• CLI with all flags

🔜 Coming Next

• Multi-file support — Agent works across multiple files simultaneously
• Language support — JavaScript, TypeScript, Go, Rust
• Plugin system — Custom tools via YAML/Python
• Watch mode — Auto-fix on test failure (--watch)
• VS Code extension — Run agent from your editor
• Conversation memory — Learn from past runs
• Multi-agent mode — Planner + Coder + Reviewer + Evaluator agents

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🤝 Contributing

We welcome contributions! See CONTRIBUTING.md for details.

git checkout -b feature/your-feature
# ... make changes ...
python -m pytest demo_project/ -v
git commit -m "feat: your feature"
git push origin feature/your-feature

Good first issues are tagged and waiting: Browse good first issues →

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📜 License

MIT — use it however you want. See LICENSE.

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⭐ Star History

If DevAgent helps you, give it a star! It helps others discover the project.

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Built with 🧠 by Vedant Jadhav

A lightweight local open-source miniature of Claude Code CLI.