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How to integrate Bolna MCP with OpenAI Agents SDK

Connect OpenAI Agents SDK to Bolna MCP. List all voice agents available to me, initiate a call using your sales agent, and more using natural language, with authentication handled for you.

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Bolna is an AI platform for building conversational voice agents. It helps businesses automate support and streamline interactions through natural, voice-powered conversations.

97 Tools

Introduction

This guide walks you through connecting Bolna to the OpenAI Agents SDK using the Composio tool router. By the end, you'll have a working Bolna agent that can list all voice agents available to me, initiate a call using your sales agent, get status of recent agent executions through natural language commands.

This guide will help you understand how to give your OpenAI Agents SDK agent real control over a Bolna account through Composio's Bolna MCP server.

Before we dive in, let's take a quick look at the key ideas and tools involved.

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TL;DR

Here's what you'll learn:
  • Get and set up your OpenAI and Composio API keys
  • Install the necessary dependencies
  • Initialize Composio and create a Tool Router session for Bolna
  • Configure an AI agent that can use Bolna as a tool
  • Run a live chat session where you can ask the agent to perform Bolna operations

What is OpenAI Agents SDK?

The OpenAI Agents SDK is a lightweight framework for building AI agents that can use tools and maintain conversation state. It provides a simple interface for creating agents with hosted MCP tool support.

Key features include:

  • Hosted MCP Tools: Connect to external services through hosted MCP endpoints
  • SQLite Sessions: Persist conversation history across interactions
  • Simple API: Clean interface with Agent, Runner, and tool configuration
  • Streaming Support: Real-time response streaming for interactive applications

What is the Bolna MCP server, and what's possible with it?

The Bolna MCP server is an implementation of the Model Context Protocol that connects your AI agent and assistants like Claude, Cursor, etc directly to your Bolna account. It provides structured and secure access to your Bolna voice agent platform, so your agent can perform actions like listing agents, making phone calls, managing executions, and retrieving analytics on your behalf.

  • Automated voice call initiation: Let your AI agent instantly initiate phone calls using your Bolna conversational agents, streamlining outreach and support tasks.
  • Agent and phone number management: Effortlessly fetch and list all your Bolna agents or phone numbers, making it easy to review and organize your voice assets.
  • Real-time execution monitoring: Retrieve detailed information about specific call executions or monitor all executions for a given agent to track performance and outcomes.
  • Batch processing for agents: List and manage batch operations associated with your agents, supporting bulk workflows and campaign management.
  • Agent cleanup and maintenance: Quickly delete agents or batches that are no longer needed, keeping your Bolna environment organized and up to date.

What is the Composio tool router, and how does it fit here?

What is Composio SDK?

Composio's Composio SDK helps agents find the right tools for a task at runtime. You can plug in multiple toolkits (like Gmail, HubSpot, and GitHub), and the agent will identify the relevant app and action to complete multi-step workflows. This can reduce token usage and improve the reliability of tool calls. Read more here: Getting started with Composio SDK

The tool router generates a secure MCP URL that your agents can access to perform actions.

How the Composio SDK works

The Composio SDK follows a three-phase workflow:

  1. Discovery: Searches for tools matching your task and returns relevant toolkits with their details.
  2. Authentication: Checks for active connections. If missing, creates an auth config and returns a connection URL via Auth Link.
  3. Execution: Executes the action using the authenticated connection.

Step-by-step Guide

Step by step09 STEPS
1

Prerequisites

Before starting, make sure you have:
  • Composio API Key and OpenAI API Key
  • Primary know-how of OpenAI Agents SDK
  • A live Bolna project
  • Some knowledge of Python or Typescript
2

Getting API Keys for OpenAI and Composio

OpenAI API Key
  • Go to the OpenAI dashboard and create an API key. You'll need credits to use the models, or you can connect to another model provider.
  • Keep the API key safe.
Composio API Key
3

Install dependencies

npm install @composio/openai-agents @openai/agents dotenv

Install the Composio SDK and the OpenAI Agents SDK.

4

Set up environment variables

bash
OPENAI_API_KEY=sk-...your-api-key
COMPOSIO_API_KEY=your-api-key
USER_ID=composio_user@gmail.com

Create a .env file and add your OpenAI and Composio API keys.

5

Import dependencies

import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';
What's happening:
  • You're importing all necessary libraries.
  • The Composio and OpenAIAgentsProvider classes are imported to connect your OpenAI agent to Composio tools like Bolna.
6

Set up the Composio instance

dotenv.config();

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.USER_ID;

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});
What's happening:
  • dotenv.config() loads your .env file so COMPOSIO_API_KEY and USER_ID are available as environment variables.
  • Creating a Composio instance using the API Key and OpenAIAgentsProvider class.
7

Create a Tool Router session

// Create Tool Router session for Bolna
const session = await composio.create(userId as string, {
  toolkits: ['bolna'],
});
const mcpUrl = session.mcp.url;

What is happening:

  • You give the Tool Router the user id and the toolkits you want available. Here, it is only bolna.
  • The router checks the user's Bolna connection and prepares the MCP endpoint.
  • The returned session.mcp.url is the MCP URL that your agent will use to access Bolna.
  • This approach keeps things lightweight and lets the agent request Bolna tools only when needed during the conversation.
8

Configure the agent

// Configure agent with MCP tool
const agent = new Agent({
  name: 'Assistant',
  model: 'gpt-5',
  instructions:
    'You are a helpful assistant that can access Bolna. Help users perform Bolna operations through natural language.',
  tools: [
    hostedMcpTool({
      serverLabel: 'tool_router',
      serverUrl: mcpUrl,
      headers: { 'x-api-key': composioApiKey },
      requireApproval: 'never',
    }),
  ],
});
What's happening:
  • We're creating an Agent instance with a name, model (gpt-5), and clear instructions about its purpose.
  • The agent's instructions tell it that it can access Bolna and help with queries, inserts, updates, authentication, and fetching database information.
  • The tools array includes a hostedMcpTool that connects to the MCP server URL we created earlier.
  • The headers object includes the Composio API key for secure authentication with the MCP server.
  • requireApproval: 'never' means the agent can execute Bolna operations without asking for permission each time, making interactions smoother.
9

Start chat loop and handle conversation

// Keep conversation state across turns
const conversationSession = new OpenAIConversationsSession();

// Simple CLI
const rl = readline.createInterface({
  input: process.stdin,
  output: process.stdout,
  prompt: 'You: ',
});

console.log('\nComposio Tool Router session created.');
console.log('\nChat started. Type your requests below.');
console.log("Commands: 'exit', 'quit', or 'q' to end\n");

try {
  const first = await run(agent, 'What can you help me with?', { session: conversationSession });
  console.log(`Assistant: ${first.finalOutput}\n`);
} catch (e) {
  console.error('Error:', e instanceof Error ? e.message : e, '\n');
}

rl.prompt();

rl.on('line', async (userInput) => {
  const text = userInput.trim();

  if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
    console.log('Goodbye!');
    rl.close();
    process.exit(0);
  }

  if (!text) {
    rl.prompt();
    return;
  }

  try {
    const result = await run(agent, text, { session: conversationSession });
    console.log(`\nAssistant: ${result.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();
});

rl.on('close', () => {
  console.log('\n👋 Session ended.');
  process.exit(0);
});
What's happening:
  • The program prints a session URL that you visit to authorize Bolna.
  • After authorization, the chat begins.
  • Each message you type is processed by the agent using run().
  • The responses are printed to the console.
  • Typing exit, quit, or q cleanly ends the chat.

Complete Code

Here's the complete code to get you started with Bolna and OpenAI Agents SDK:

import 'dotenv/config';
import { Composio } from '@composio/core';
import { OpenAIAgentsProvider } from '@composio/openai-agents';
import { Agent, hostedMcpTool, run, OpenAIConversationsSession } from '@openai/agents';
import * as readline from 'readline';

const composioApiKey = process.env.COMPOSIO_API_KEY;
const userId = process.env.USER_ID;

if (!composioApiKey) {
  throw new Error('COMPOSIO_API_KEY is not set. Create a .env file with COMPOSIO_API_KEY=your_key');
}
if (!userId) {
  throw new Error('USER_ID is not set');
}

// Initialize Composio
const composio = new Composio({
  apiKey: composioApiKey,
  provider: new OpenAIAgentsProvider(),
});

async function main() {
  // Create Tool Router session
  const session = await composio.create(userId as string, {
    toolkits: ['bolna'],
  });
  const mcpUrl = session.mcp.url;

  // Configure agent with MCP tool
  const agent = new Agent({
    name: 'Assistant',
    model: 'gpt-5',
    instructions:
      'You are a helpful assistant that can access Bolna. Help users perform Bolna operations through natural language.',
    tools: [
      hostedMcpTool({
        serverLabel: 'tool_router',
        serverUrl: mcpUrl,
        headers: { 'x-api-key': composioApiKey },
        requireApproval: 'never',
      }),
    ],
  });

  // Keep conversation state across turns
  const conversationSession = new OpenAIConversationsSession();

  // Simple CLI
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
    prompt: 'You: ',
  });

  console.log('\nComposio Tool Router session created.');
  console.log('\nChat started. Type your requests below.');
  console.log("Commands: 'exit', 'quit', or 'q' to end\n");

  try {
    const first = await run(agent, 'What can you help me with?', { session: conversationSession });
    console.log(`Assistant: ${first.finalOutput}\n`);
  } catch (e) {
    console.error('Error:', e instanceof Error ? e.message : e, '\n');
  }

  rl.prompt();

  rl.on('line', async (userInput) => {
    const text = userInput.trim();

    if (['exit', 'quit', 'q'].includes(text.toLowerCase())) {
      console.log('Goodbye!');
      rl.close();
      process.exit(0);
    }

    if (!text) {
      rl.prompt();
      return;
    }

    try {
      const result = await run(agent, text, { session: conversationSession });
      console.log(`\nAssistant: ${result.finalOutput}\n`);
    } catch (e) {
      console.error('Error:', e instanceof Error ? e.message : e, '\n');
    }

    rl.prompt();
  });

  rl.on('close', () => {
    console.log('\nSession ended.');
    process.exit(0);
  });
}

main().catch((err) => {
  console.error('Fatal error:', err);
  process.exit(1);
});

Conclusion

This was a starter code for integrating Bolna MCP with OpenAI Agents SDK to build a functional AI agent that can interact with Bolna.

Key features:

  • Hosted MCP tool integration through Composio's Tool Router
  • SQLite session persistence for conversation history
  • Simple async chat loop for interactive testing
You can extend this by adding more toolkits, implementing custom business logic, or building a web interface around the agent.
TOOLS

Supported Tools

Every Bolna action and event your agent gets out of the box.

Abort workflow campaign

Move a running or paused campaign to the terminal aborted state and stop its executions.

Add custom LLM model

Register an OpenAI-compatible custom LLM endpoint with Bolna.

Add Provider to Bolna

Tool to add a new telephony or voice service provider to your Bolna account.

Add number to SIP trunk

Add a DID phone number to a SIP trunk.

Bulk create dispositions

Atomically create multiple dispositions linked to one agent.

Buy phone number

Purchase an available phone number with a recurring account charge.

Cancel workflow execution

Stop one workflow execution before its next external action.

Copy Bolna Agent

Tool to create a duplicate copy of an existing Bolna voice AI agent.

Create Bolna Voice AI Agent (v2)

Tool to create a new Bolna Voice AI agent using the v2 API.

Create Bolna Batch

Tool to create a new outbound calling batch by uploading a CSV of contacts to obtain a batch_id.

Create disposition

Create a structured transcript extraction disposition linked to an agent.

Create extraction category

Create an extraction category on an agent.

Create Bolna Knowledgebase

Tool to create a new knowledgebase for Voice AI agents to reference during conversations.

Create SIP trunk

Create a bring-your-own-telephony SIP trunk.

Create sub-account

Create an enterprise sub-account with its own concurrency limits and API key.

Create workflow

Create an empty, unpublished workflow and return its identifier.

Create workflow campaign

Create a draft campaign pinned to a published workflow version.

Delete agent by id

Permanently delete a Voice AI agent and all associated data including batches, executions, and configurations

Delete batch by id

Permanently delete a batch campaign by its ID, removing it from the system.

Delete custom LLM model

Delete a custom LLM model and its stored endpoint key from Bolna.

Delete disposition

Permanently delete a disposition without changing past call results.

Delete extraction category

Permanently delete an extraction category and every disposition inside it.

Delete Knowledgebase

Tool to permanently delete a knowledgebase from your Bolna account.

Delete phone number

Permanently release a purchased phone number and stop recurring billing.

Delete SIP trunk

Permanently delete a SIP trunk and its gateways, IP identifiers, and numbers.

Delete sub-account

Permanently delete a sub-account and all of its data.

Delete workflow

Permanently delete a workflow, its draft, and all published versions.

Delete workflow campaign

Permanently delete an empty campaign only while it is draft or scheduled.

Fetch all batches by agent id

Retrieve all batches associated with a specific Bolna Voice AI agent.

Get all agents

Retrieve all agents configured in your Bolna account Returns a comprehensive list of all voice agents with their configurations including: - Agent metadata (ID, name, type, status) - Task configurations (conversation settings, toolchains) - AI model settings (LLM, transcriber, synthesizer) - Webhook and phone number assignments - System prompts and guardrails This is useful for listing available agents, checking agent configurations, or finding specific agents by their properties.

Get all sub-accounts usage

Retrieve usage and cost breakdowns for every organization sub-account.

Get disposition

Retrieve one disposition, optionally requiring an agent link.

Get execution by id

Retrieve detailed information about a specific phone call execution by its ID.

Get execution raw logs

Retrieve raw transcriber, LLM, synthesizer, and telephony logs for a call.

Get knowledgebase by ID

Tool to retrieve details of a specific knowledgebase by its ID.

Get SIP trunk

Retrieve full details of one SIP trunk.

Get sub-account usage

Retrieve one sub-account's usage and cost breakdown for up to 32 days.

Get User Information

Tool to retrieve information about the authenticated user.

Get workflow

Retrieve workflow status, live settings, and version history.

Get workflow campaign

Retrieve a campaign with entry-status and validation-error counts.

Get workflow campaign entries template

Get the exact CSV header expected by a campaign's pinned workflow version.

Get workflow campaign report

Get aggregate statuses, termination reasons, and per-node funnel counts.

Get workflow draft

Retrieve a workflow's editable draft definition and revision.

Get workflow execution

Retrieve one contact's status, node attempts, state, and recent timeline.

Get workflow version

Retrieve a specific published workflow version and its full node graph.

Import Bolna Agent

Tool to import an existing Bolna voice AI agent by its ID.

List custom LLM models

List custom LLM models available in the current Bolna account scope.

List dispositions

List account-owned dispositions or dispositions linked to one agent.

List extraction categories

List an agent's extraction categories and the dispositions inside each.

List Knowledgebases

Tool to retrieve all knowledgebases from your Bolna account.

List all phone numbers

Tool to list all phone numbers associated with your Bolna account.

List all providers

Retrieve all providers associated with your Bolna account Returns a list of all configured providers including: - Provider IDs (unique identifiers) - Provider names (e.

List SIP trunks

List SIP trunks, optionally filtered by active status.

List sub-accounts

List all sub-accounts linked to the organization.

List numbers on SIP trunk

List all phone numbers assigned to a SIP trunk.

List TTS providers and models

List TTS providers and models supported for a language.

List violations

List flagged call violations, optionally filtered by status.

List available voices

List voices for one TTS provider, model, and language, with pagination.

List workflow campaign entries

List a campaign's uploaded contacts, including row validation failures.

List workflow campaign executions

List and filter the per-contact executions created by a campaign.

List workflow campaigns

List workflow campaigns with filters, sorting, and offset pagination.

List workflow node types

List workflow node types and their supported configuration fields.

List workflows

List account workflows with optional name filtering and offset pagination.

Make an outbound phone call from agent

Initiate an outbound phone call using a configured Bolna Voice AI agent.

Patch Bolna Voice AI agent (v2)

Partially update a Bolna v2 agent without replacing its full configuration.

Pause workflow campaign

Move a scheduled or running campaign to paused; only paused campaigns can be resumed, while aborted campaigns are terminal.

Publish workflow

Freeze the current valid draft as a new immutable workflow version.

Remove Provider from Bolna Account

Tool to remove a provider from your Bolna account by its key name.

Remove number from SIP trunk

Remove a phone number and any agent mapping from a SIP trunk.

Rename workflow

Rename an existing workflow.

Resend workflow execution webhook

Queue redelivery of a finished workflow execution's original webhook.

Resume workflow campaign

Move a paused campaign back to running.

Retrieve agent by id

Retrieve complete configuration and details for a specific Bolna voice AI agent by its ID.

Retrieve agent execution status

Retrieve all executions for a specific agent with pagination and filtering support.

Retrieve Batch Details by ID

Retrieve comprehensive details about a specific Bolna batch by its ID.

Retrieve batch execution list

Retrieve all executions from a specific batch with pagination support.

Run workflow

Run one contact through the workflow's latest published version.

Save workflow draft

Overwrite a workflow draft using revision-based optimistic concurrency.

Schedule Batch by ID

Schedule a batch to execute at a specific time.

Search available phone numbers

Tool to search for available phone numbers that can be purchased for Bolna Voice agents.

Setup inbound call for agent

Add agent for inbound calls

Start workflow campaign

Move a draft or scheduled campaign to running.

Stop Agent Calls

Tool to stop all queued or scheduled calls for a specific Voice AI agent.

Stop batch by id

Stop a running batch by its ID.

Stop queued or scheduled call

Cancel a queued or scheduled call before it starts.

Submit violation

Submit evidence for a Bolna violation and move it to submitted state.

Test dispositions against a transcript

Run every linked disposition against a transcript.

Test workflow webhook

Send a sample terminal execution event to a workflow's saved webhook.

Unlink inbound agent

Remove automatic inbound agent routing from a phone number.

Update Bolna Voice AI Agent (v2)

Tool to update all settings and configuration of an existing Bolna Voice AI agent using the v2 API.

Update disposition

Partially update a disposition, with optional agent-scoped copy-on-write.

Update extraction category

Rename an extraction category and/or change its extraction model.

Update SIP trunk

Partially update a SIP trunk; supplied gateway arrays replace existing arrays.

Update sub-account

Partially update an enterprise sub-account's name or concurrency limits.

Update workflow settings

Apply an RFC 7396 merge patch to a workflow's live settings.

Upload workflow campaign entries

Upload JSON contacts to a draft, scheduled, or running workflow campaign.

Validate workflow

Check a saved workflow draft for errors and warnings before publishing.

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Pydantic AI

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AutoGen

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FAQ

Frequently asked questions

With a standalone Bolna MCP server, the agents and LLMs can only access a fixed set of Bolna tools tied to that server. However, with the Composio Tool Router, agents can dynamically load tools from Bolna and many other apps based on the task at hand, all through a single MCP endpoint.

Yes, you can. OpenAI Agents SDK fully supports MCP integration. You get structured tool calling, message history handling, and model orchestration while Tool Router takes care of discovering and serving the right Bolna tools.

Yes, absolutely. You can configure which Bolna scopes and actions are allowed when connecting your account to Composio. You can also bring your own OAuth credentials or API configuration so you keep full control over what the agent can do.

All sensitive data such as tokens, keys, and configuration is fully encrypted at rest and in transit. Composio is SOC 2 Type 2 compliant and follows strict security practices so your Bolna data and credentials are handled as safely as possible.

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