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https://github.com/vstorm-co/pydantic-deepagents

Python Deep Agent framework built on top of Pydantic-AI, designed to help you quickly build production-grade autonomous AI agents with planning, filesystem operations, subagent delegation, skills, and structured outputs—in just 10 lines of code.
https://github.com/vstorm-co/pydantic-deepagents

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Python Deep Agent framework built on top of Pydantic-AI, designed to help you quickly build production-grade autonomous AI agents with planning, filesystem operations, subagent delegation, skills, and structured outputs—in just 10 lines of code.

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README

          


pydantic-deep

Pydantic Deep Agents


From framework to terminal — autonomous AI agents that plan, code, and ship


Docs ·
PyPI ·
CLI ·
DeepResearch ·
Examples


PyPI version
Python 3.10+
License: MIT
Coverage Status
CI
Pydantic AI


🔄 Unlimited Context
 • 
🤖 Subagent Delegation
 • 
🧠 Persistent Memory
 • 
🛡️ Lifecycle Hooks

---

### Same Architecture as the Best

pydantic-deep implements the **deep agent pattern** — the same architecture powering:

| | Product | What They Built |
|:-:|---------|-----------------|
| 🤖 | [**Claude Code**](https://claude.ai/code) | Anthropic's AI coding assistant |
| 🦾 | [**Manus AI**](https://manus.ai) | Autonomous task execution |
| 👨‍💻 | [**Devin**](https://devin.ai) | AI software engineer |

**Now you can build the same thing** — or just use the CLI.

> **Inspired by:** [LangChain's Deep Agents](https://github.com/langchain-ai/deepagents) research on autonomous agent architectures.

---

**pydantic-deep** is three things:

1. **A Python framework** for building Claude Code-style agents with planning, filesystem access, subagents, memory, and unlimited context
2. **A CLI** that gives you a terminal AI assistant out of the box
3. **DeepResearch** — a full-featured research agent with web UI, web search, diagrams, and sandboxed code execution

---

## CLI — Terminal AI Assistant


pydantic-deep CLI demo

```bash
pip install pydantic-deep[cli]
pydantic-deep chat
```

That's it. You get an interactive AI agent in your terminal with:

- File read/write/edit, shell execution, glob, grep
- Task planning and subagent delegation
- Persistent memory across sessions
- Context compression for unlimited conversations
- Git-aware project context
- Built-in commands: `/commit`, `/pr`, `/review`, `/test`, `/fix`, `/explain`
- Customizable skills, hooks, and output styles

```bash
# Interactive mode
pydantic-deep chat

# Run a single task
pydantic-deep run "Fix the failing tests in src/"

# Docker sandbox for isolated execution
pydantic-deep run "Build a web scraper" --sandbox

# Pick a model
pydantic-deep chat --model anthropic:claude-sonnet-4-20250514

# Manage config
pydantic-deep config set model openai:gpt-4.1
```

> See [CLI docs](docs/cli/index.md) for the full reference.

---

## Framework — Build Your Own Agent

```bash
pip install pydantic-deep
```

```python
from pydantic_ai_backends import StateBackend
from pydantic_deep import create_deep_agent, create_default_deps

agent = create_deep_agent()
deps = create_default_deps(StateBackend())

result = await agent.run("Create a todo list for building a REST API", deps=deps)
```

One function call gives you an agent with planning, filesystem tools, subagents, skills, context management, and cost tracking. Everything is toggleable:

```python
agent = create_deep_agent(
model="openai:gpt-4.1",
include_todo=True, # Task planning
include_filesystem=True, # File read/write/edit/execute
include_subagents=True, # Delegate to subagents
include_skills=True, # Domain-specific skills from SKILL.md files
include_memory=True, # Persistent MEMORY.md across sessions
include_plan=True, # Structured planning before execution
include_teams=True, # Multi-agent teams with shared TODOs
include_web=True, # Web search and URL fetching
context_manager=True, # Auto-summarization for unlimited context
cost_tracking=True, # Token/USD budget enforcement
include_checkpoints=True, # Save, rewind, and fork conversations
)
```

### Structured Output

```python
from pydantic import BaseModel

class CodeReview(BaseModel):
summary: str
issues: list[str]
score: int

agent = create_deep_agent(output_type=CodeReview)
result = await agent.run("Review the auth module", deps=deps)
print(result.output.score) # Type-safe!
```

### Context Management

```python
from pydantic_deep import create_summarization_processor

processor = create_summarization_processor(
trigger=("tokens", 100000),
keep=("messages", 20),
)
agent = create_deep_agent(history_processors=[processor])
```

### Hooks (Claude Code-Style)

```python
from pydantic_deep import Hook, HookEvent

agent = create_deep_agent(
hooks=[
Hook(
event=HookEvent.PRE_TOOL_USE,
command="echo 'Tool called: $TOOL_NAME' >> /tmp/audit.log",
),
],
)
```

### Cost Tracking

```python
agent = create_deep_agent(
cost_tracking=True,
cost_budget_usd=5.0,
on_cost_update=lambda info: print(f"Cost: ${info.total_usd:.4f}"),
)
```

### Custom Subagents

```python
agent = create_deep_agent(
subagents=[
{
"name": "code-reviewer",
"description": "Reviews code for quality issues",
"instructions": "You are a senior code reviewer...",
"preferred_mode": "sync",
},
],
)
```

> See the full [API reference](https://vstorm-co.github.io/pydantic-deepagents/api/toolsets/) for all options.

---

## DeepResearch — Reference App

A full-featured research agent with web UI, built entirely on pydantic-deep.

Planner subagent asks clarifying questions

Plan Mode — planner asks clarifying questions

Parallel subagent research

Parallel Subagents — 5 agents researching simultaneously

Excalidraw canvas

Excalidraw Canvas — live diagrams synced with agent

File browser

File Browser — workspace files with inline preview

Web search (Tavily, Brave, Jina), sandboxed code execution, Excalidraw diagrams, subagents, plan mode, report export, and more.

```bash
cd apps/deepresearch
uv sync
cp .env.example .env # Add your API keys
uv run deepresearch # Open http://localhost:8080
```

> See [apps/deepresearch/README.md](apps/deepresearch/README.md) for full setup.

---

## Architecture

pydantic-deep implements the **deep agent pattern** — the same architecture powering Claude Code, Devin, and Manus AI. Every component is modular and works standalone:

| Component | Package | What It Does |
|-----------|---------|--------------|
| **Backends** | [pydantic-ai-backend](https://github.com/vstorm-co/pydantic-ai-backend) | File storage, Docker/Daytona sandbox |
| **Planning** | [pydantic-ai-todo](https://github.com/vstorm-co/pydantic-ai-todo) | Task tracking with dependencies |
| **Subagents** | [subagents-pydantic-ai](https://github.com/vstorm-co/subagents-pydantic-ai) | Sync/async delegation, cancellation |
| **Summarization** | [summarization-pydantic-ai](https://github.com/vstorm-co/summarization-pydantic-ai) | LLM summaries or sliding window |
| **Middleware** | [pydantic-ai-middleware](https://github.com/vstorm-co/pydantic-ai-middleware) | Lifecycle hooks, permissions |

```
pydantic-deep
┌─────────────────────────────────────────────────────────────────────┐
│ │
│ ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌──────────┐ ┌─────────┐ │
│ │ Planning │ │Filesystem│ │ Subagents│ │ Skills │ │ Teams │ │
│ └────┬─────┘ └────┬─────┘ └────┬─────┘ └────┬─────┘ └────┬────┘ │
│ │ │ │ │ │ │
│ └────────────┴─────┬──────┴────────────┴────────────┘ │
│ │ │
│ ▼ │
│ Summarization ──► ┌──────────────────┐ ◄── Middleware │
│ Checkpointing ──► │ Deep Agent │ ◄── Hooks │
│ Cost Tracking ──► │ (pydantic-ai) │ ◄── Memory │
│ └────────┬─────────┘ │
│ │ │
│ ┌─────────────────┼─────────────────┐ │
│ ▼ ▼ ▼ │
│ ┌────────────┐ ┌────────────┐ ┌────────────┐ │
│ │ State │ │ Local │ │ Docker │ │
│ │ Backend │ │ Backend │ │ Sandbox │ │
│ └────────────┘ └────────────┘ └────────────┘ │
│ │
└─────────────────────────────────────────────────────────────────────┘
```

---

## All Features

Click to expand full feature list

### Core Toolsets

- **Planning** — Task tracking with subtasks, dependencies, cycle detection. PostgreSQL storage. Event system.
- **Filesystem** — `ls`, `read_file`, `write_file`, `edit_file`, `glob`, `grep`, `execute`. Docker sandbox. Permission system.
- **Subagents** — Sync/async delegation. Background task management. Soft/hard cancellation.
- **Summarization** — LLM-based summaries or zero-cost sliding window. Trigger on tokens, messages, or fraction.
- **Middleware** — 7 lifecycle hooks. Composable chains. Permission handling.

### Advanced

- **Checkpointing** — Save state at intervals. Rewind or fork sessions. In-memory and file-based stores.
- **Agent Teams** — Shared TODO lists with claiming and dependency tracking. Peer-to-peer message bus.
- **Hooks** — Claude Code-style lifecycle hooks. Shell commands on tool events. Audit logging, safety gates.
- **Persistent Memory** — `MEMORY.md` that persists across sessions. Auto-injected into system prompt.
- **Context Files** — Auto-discover and inject `AGENT.md` into the system prompt.
- **Output Styles** — Built-in (concise, explanatory, formal, conversational) or custom from files.
- **Plan Mode** — Dedicated planner subagent for structured planning before execution.
- **Cost Tracking** — Token/USD budgets with automatic enforcement and real-time callbacks.
- **Eviction Processor** — Evict large tool outputs to files. Keep context lean while preserving data.
- **Patch Tool Calls** — On resume, patch stale tool call results for clean history.
- **Custom Tool Descriptions** — Override any tool's description via `descriptions` parameter.
- **Custom Commands** — `/commit`, `/pr`, `/review`, `/test`, `/fix`, `/explain`. Three-scope discovery: built-in, user, project.
- **Web Tools** — Web search (Tavily) and URL fetching with automatic markdown conversion.
- **Structured Output** — Type-safe responses with Pydantic models via `output_type`.
- **Human-in-the-Loop** — Confirmation workflows for sensitive operations.
- **Streaming** — Full streaming support for real-time responses.
- **Image Support** — Multi-modal analysis with image inputs.

---

## Contributing

```bash
git clone https://github.com/vstorm-co/pydantic-deepagents.git
cd pydantic-deepagents
make install
make test # 100% coverage required
make all # lint + typecheck + test
```

---

## Star History



Star History

---

## License

MIT — see [LICENSE](LICENSE)

---

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