> For the complete documentation index, see [llms.txt](https://docs.mozilla.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.mozilla.ai/tinyagent/index.md).

# Introduction

A minimal agent framework with first-class tracing, callbacks, MCP, and serving support.

## Why tinyagent

* **Tiny**: One small Python implementation of the agent loop. You can read it in one sitting.
* **Tracing built in**: Every run produces an `AgentTrace` with OpenTelemetry-compatible spans, token counts, and cost.
* **Callbacks**: Subclass `Callback` for guardrails, metrics, observability, or intentional cancellation.
* **MCP-native**: First-class support for [Model Context Protocol](https://modelcontextprotocol.io/) tools (stdio, SSE, streamable HTTP).
* **Serve as a service**: Run your agent over MCP or A2A.
* **Provider-agnostic**: Built on [`any-llm`](https://github.com/mozilla-ai/any-llm). Swap providers by changing `model_id`.

## Install

```bash
pip install mozilla-ai-tinyagent
```

The PyPI distribution name is `mozilla-ai-tinyagent`; the import name is `tinyagent`.

Optional extras:

```bash
pip install 'mozilla-ai-tinyagent[a2a]'       # A2A serving
pip install 'mozilla-ai-tinyagent[composio]'  # Composio tools
pip install 'mozilla-ai-tinyagent[all]'       # everything
```

## Quickstart

```python
from tinyagent import TinyAgent, AgentConfig
from tinyagent.tools import search_web, visit_webpage

agent = TinyAgent.create(
    AgentConfig(
        model_id="mistral:mistral-small-latest",
        instructions="Use the tools to find an answer.",
        tools=[search_web, visit_webpage],
    )
)

trace = agent.run("Which agent framework is the simplest?")
print(trace.final_output)
```

## What's next

* [Models](/tinyagent/guides/models.md) — configuring providers and `model_id` syntax.
* [Tools](/tinyagent/guides/tools.md) — using callable tools, MCP servers, and the built-in helpers.
* [Callbacks](/tinyagent/guides/callbacks.md) — observe and control execution.
* [Tracing](/tinyagent/guides/tracing.md) — inspect spans, tokens, and cost.
* [Serving](/tinyagent/guides/serving.md) — serve your agent over MCP or A2A.
* [Evaluation](/tinyagent/guides/evaluation.md) — judge an agent's behavior with `LlmJudge` and `AgentJudge`.
* [Cookbook](/tinyagent/cookbook/your-first-agent.md) — runnable examples.


---

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