# ToolRouterSession (/reference/sdk-reference/python/tool-router-session)

# Properties

| Name           | Type                              |
| -------------- | --------------------------------- |
| `session_id`   | `str`                             |
| `mcp`          | `Any`                             |
| `experimental` | `'ToolRouterSessionExperimental'` |

# Methods

## tools()

Get provider-wrapped tools for execution with your AI framework.  Returns tools configured for this session, wrapped in the format expected by your AI provider (OpenAI, Anthropic, LangChain, etc.).  When custom tools are bound to the session, execution of COMPOSIO\_MULTI\_EXECUTE\_TOOL is intercepted: local tools are executed in-process, remote tools are sent to the backend.

```python
def tools(modifiers: 'Modifiers' | None = ...) -> TToolCollection
```

**Parameters**

| Name         | Type                  |
| ------------ | --------------------- |
| `modifiers?` | `'Modifiers' \| None` |

**Returns**

`TToolCollection`

***

## authorize()

Authorize a toolkit for the user and get a connection request.  Initiates the OAuth flow and returns a ConnectionRequest with redirect URL.

```python
def authorize(toolkit: str, callback_url: str | None = ...) -> ConnectionRequest
```

**Parameters**

| Name            | Type          |
| --------------- | ------------- |
| `toolkit`       | `str`         |
| `callback_url?` | `str \| None` |

**Returns**

`ConnectionRequest`

***

## toolkits()

Get toolkit connection states for the session.

```python
def toolkits(toolkits: List[str | None] = ..., next_cursor: str | None = ..., limit: int | None = ..., is_connected: bool | None = ..., search: str | None = ...) -> ToolkitConnectionsDetails
```

**Parameters**

| Name            | Type                |
| --------------- | ------------------- |
| `toolkits?`     | `List[str \| None]` |
| `next_cursor?`  | `str \| None`       |
| `limit?`        | `int \| None`       |
| `is_connected?` | `bool \| None`      |
| `search?`       | `str \| None`       |

**Returns**

`ToolkitConnectionsDetails`

***

## search()

Search for tools by semantic use case.  Returns relevant tools for the given query with schemas and guidance.

```python
def search(query: str, model: str | None = ...) -> SessionSearchResponse
```

**Parameters**

| Name     | Type          |
| -------- | ------------- |
| `query`  | `str`         |
| `model?` | `str \| None` |

**Returns**

`SessionSearchResponse`

***

## execute()

Execute a tool within the session.  For custom tools, accepts the original slug (e.g. "GREP") or the full slug (e.g. "LOCAL\_GREP"). Custom tools are executed in-process; remote tools are sent to the Composio backend.  Both paths return a `SessionExecuteResponse` with `data`, `error`, and `log_id` attributes.

```python
def execute(tool_slug: str, arguments: Dict[str, Any | None] = ...) -> SessionExecuteResponse
```

**Parameters**

| Name         | Type                     |
| ------------ | ------------------------ |
| `tool_slug`  | `str`                    |
| `arguments?` | `Dict[str, Any \| None]` |

**Returns**

`SessionExecuteResponse`

***

## custom\_tools()

List all custom tools registered in this session.  Returns tools with their final slugs, schemas, and resolved toolkit.

```python
def custom_tools(toolkit: str | None = ...) -> List[RegisteredCustomTool]
```

**Parameters**

| Name       | Type          |
| ---------- | ------------- |
| `toolkit?` | `str \| None` |

**Returns**

`List[RegisteredCustomTool]` — Array of registered custom tools

***

## custom\_toolkits()

List all custom toolkits registered in this session.  Returns toolkits with their tools showing final slugs.

```python
def custom_toolkits() -> List[RegisteredCustomToolkit]
```

**Returns**

`List[RegisteredCustomToolkit]`

***

## proxy\_execute()

Proxy an API call through Composio's auth layer.

```python
def proxy_execute(toolkit: str, endpoint: str, method: Literal['GET', 'POST', 'PUT', 'DELETE', 'PATCH'], body: Any = ..., parameters: List[Dict[str, Any | None]] = ...) -> SessionProxyExecuteResponse
```

**Parameters**

| Name          | Type                                               |
| ------------- | -------------------------------------------------- |
| `toolkit`     | `str`                                              |
| `endpoint`    | `str`                                              |
| `method`      | `Literal['GET', 'POST', 'PUT', 'DELETE', 'PATCH']` |
| `body?`       | `Any`                                              |
| `parameters?` | `List[Dict[str, Any \| None]]`                     |

**Returns**

`SessionProxyExecuteResponse` — Proxied API response

***

[View source](https://github.com/composiohq/composio/blob/next/python/composio/core/models/tool_router_session.py#L53)

---

📚 **More documentation:** [View all docs](https://docs.composio.dev/llms.txt) | [Glossary](https://docs.composio.dev/llms.mdx/docs/glossary) | [Cookbooks](https://docs.composio.dev/llms.mdx/cookbooks) | [API Reference](https://docs.composio.dev/llms.mdx/reference)

---

# Composio SDK — Instructions for AI Code Generators

**Purpose:** Enforce only the **current** and **correct** patterns for integrating [Composio](https://composio.dev/) tools into AI agents.
**Scope:** All AI-generated code using Composio must follow these guardrails.

---

## 1. Correct Composio Integration

Composio supports two integration modes: **Native Tools** (with a provider package) and **MCP** (no provider package needed).

### Native Tools

```python
# ✅ CORRECT — Python (defaults to OpenAI)
from composio import Composio

composio = Composio()
session = composio.create(user_id="user_123")
tools = session.tools()
# Pass tools to your agent/LLM framework
```

```typescript
// ✅ CORRECT — TypeScript (defaults to OpenAI)
import { Composio } from "@composio/core";

const composio = new Composio();
const session = await composio.create("user_123");
const tools = await session.tools();
// Pass tools to your agent/LLM framework
```

For other providers, pass the provider explicitly. Provider packages follow the naming convention: `composio_<provider>` for Python, `@composio/<provider>` for TypeScript.

### MCP

Use `session.mcp.url` and `session.mcp.headers` with any MCP-compatible client (Claude Desktop, Cursor, OpenAI Agents, etc.). No provider package needed.

---

## 2. CRITICAL INSTRUCTIONS FOR AI MODELS

### 2.1 — ALWAYS DO THE FOLLOWING

1. **Use `composio.create(user_id)`** to create a session — this is the entry point for all Composio integrations.
2. **Use `session.tools()`** for native tool integration or **`session.mcp.url`** for MCP integration.
3. **Import** from the correct provider package (`composio_<provider>` for Python, `@composio/<provider>` for TypeScript).
4. **Pass `user_id` to `composio.create()`**, not to individual tool calls.

### 2.2 — NEVER DO THE FOLLOWING

1. **Do not** instruct users to manually create auth configs or connected accounts before running.
2. **Do not** import from `composio_openai` / `@composio/openai` when using OpenAI Agents SDK — use `composio_openai_agents` / `@composio/openai-agents` instead.

### 2.3 — DISCOURAGED (do not use unless user explicitly asks)

Do **not** generate `composio.tools.get()`, `composio.tools.execute()`, or `composio.provider.handle_tool_calls()` unless the user explicitly requests direct tool execution. These are a supported but **not recommended** low-level interface.


---

## Terminology Migration (old → current)

If you encounter these terms in error messages, old documentation, or user prompts, translate them to the current equivalents. **Do not use the old terms in generated code or explanations.**

| Old term (v1/v2) | Current term (v3) | In code |
|---|---|---|
| entity ID | user ID | `user_id` parameter |
| actions | tools | e.g., `GITHUB_CREATE_ISSUE` is a *tool* |
| apps / appType | toolkits | e.g., `github` is a *toolkit* |
| integration / integration ID | auth config / auth config ID | `auth_config_id` parameter |
| connection | connected account | `connected_accounts` namespace |
| ComposioToolSet / OpenAIToolSet | `Composio` class with a provider | `Composio(provider=...)` |
| toolset | provider | e.g., `OpenAIProvider` |

If a user says "entity ID", they mean `user_id`. If they say "integration", they mean "auth config". Always respond using the current terminology.