The Companies API MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with The Companies API MCP or direct API to search company profiles, enrich records with tech and location data, build target-account lists, and analyze company similarity through natural language.

The Companies API logoThe Companies API
Api Key

The Companies API is a business intelligence service for searching, enriching, and analyzing company data. Use it to discover company profiles, technologies, locations, lists, and related business intelligence.

10 Tools

Try The Companies API now

Type what you want done — sign in and watch it run live in the Tool Router playground.

TOOL ROUTER PLAYGROUND
The Companies API
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TOOLS

Supported Tools

Every The Companies API action and event your agent gets out of the box.

Create List

Create an empty static company list with email notifications disabled.

Delete List

Permanently delete a company list by ID and return the deleted list record.

Enrich Job Title

Normalize a job title and infer its department and seniority classification.

Get Account Context

Return the connected user, current team, subscription state, and remaining credit balance.

Get Company

Return the cached company profile for an exact domain, optionally in a compact form; this tool does not force a paid refresh.

List Companies In List

Return one page of companies currently contained in a specified company list.

List Lists

Return one page of company lists owned by the connected account.

Rename List

Rename an existing company list without changing its query, synchronization, or notification settings.

Search Companies

Search the company database with text or structured segmentation conditions and return one page of matching company profiles.

Search Taxonomy

Search provider taxonomy values for industries, technologies, or geographic levels and return normalized identifiers for company filters.

SETUP GUIDE

Connect The Companies API MCP Tool with your Agent

1

Install Composio

typescript
npm install @composio/core ai @ai-sdk/mcp @ai-sdk/openai
Install the Composio SDK and your agent framework
2

Create a session with MCP enabled

typescript
import { Composio } from "@composio/core";

const composio = new Composio();
const { mcp } = await composio.create("your-user-id", {
  toolkits: ["thecompaniesapi"],
  mcp: true,
});
Create a session scoped to The Companies API and read its MCP URL and headers
3

Connect your agent to the MCP server

typescript
import { createMCPClient } from "@ai-sdk/mcp";
import { openai } from "@ai-sdk/openai";
import { generateText, stepCountIs } from "ai";

const client = await createMCPClient({
  transport: { type: "http", url: mcp.url, headers: mcp.headers },
});

const { text } = await generateText({
  model: openai("gpt-5.6-sol"),
  tools: await client.tools(),
  prompt: "Find a company's tech stack and location",
  stopWhen: stepCountIs(10),
});

console.log(text);
await client.close();
Pass the session's MCP URL and headers to your agent and run a The Companies API request
SETUP GUIDE

Connect The Companies API API Tool with your Agent

1

Install Composio

typescript
npm install @composio/core @composio/openai openai
Install the Composio SDK, the OpenAI provider, and the OpenAI SDK
2

Create a Composio session

typescript
import OpenAI from "openai";
import { Composio } from "@composio/core";
import { OpenAIResponsesProvider } from "@composio/openai";

const composio = new Composio({ provider: new OpenAIResponsesProvider() });
const client = new OpenAI();

const session = await composio.create("your-user-id", { toolkits: ["thecompaniesapi"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to The Companies API
3

Run The Companies API tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "Find a company's tech stack and location" }],
});

while (response.output.some((o) => o.type === "function_call")) {
  const outputs = await composio.provider.handleToolCalls(session, response.output);
  response = await client.responses.create({
    model: "gpt-5.6-sol",
    tools,
    previous_response_id: response.id,
    input: outputs,
  });
}

console.log(response.output_text);
Send a request, execute the The Companies API tool calls through the session, and print the final answer

Why Use Composio?

AI Native The Companies API Integration

  • Supports both The Companies API MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable tool execution
  • Rich coverage for reading, writing, and querying your The Companies API data

Managed Auth

  • Built-in OAuth handling with automatic token refresh and rotation
  • Central place to manage, scope, and revoke The Companies API access
  • Per user and per environment credentials instead of hard-coded keys

Agent Optimized Design

  • Tools are tuned using real error and success rates to improve reliability over time
  • Comprehensive execution logs so you always know what ran, when, and on whose behalf

Enterprise Grade Security

  • Fine-grained RBAC so you control which agents and users can access The Companies API
  • Scoped, least privilege access to The Companies API resources
  • Full audit trail of agent actions to support review and compliance

Rolling this out across your team?

Give your team centralized access control across every framework with Composio’s MCP Gateway.

EXPLORE MCP GATEWAY
FAQ

Frequently asked questions

Yes, The Companies API requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you.

Yes! Composio's Tool Router enables agents to use multiple toolkits. Learn more.

Yes. Composio is SOC 2 Type II compliant and is built to keep your The Companies API connection and credentials secure. OAuth tokens and API keys are encrypted, and sensitive customer data is protected at rest and in transit.

Composio also undergoes independent security testing and continuously monitors its systems for security threats. You can review the latest reports and policies in the Composio Trust Center.

Composio maintains and updates all toolkit integrations automatically, so your agents always work with the latest API versions.

Create the key in your The Companies API account settings, then paste it once on Composio's connection page. Composio stores it encrypted and uses it only for the The Companies API actions your agent runs. Nobody else in your workspace can read it, and you can revoke it inside The Companies API at any time.

When you connect a The Companies API account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in The Companies API as done by you. Keep an approval step in your prompt for actions with side effects, such as sending or deleting, and have the agent draft first.

Whatever the credentials you connect allow inside The Companies API. If The Companies API lets you scope a key to specific permissions, create a scoped one so the agent can only do what you intend. You can revoke the key inside The Companies API at any time.

Yes. Composio supports multiple connected accounts for the same app, and that works in Claude, ChatGPT, or any other assistant you connect through Composio. Give each The Companies API connection a name such as work or personal, and the assistant uses the one you mention in the request. Each account keeps its own credentials and nothing is merged.

The connection stops working the moment The Companies API rejects the old key. Create a new key in The Companies API and reconnect the account from the Composio dashboard or by asking your agent to reconnect The Companies API. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal The Companies API use. Paid plans add higher limits and team features. Your The Companies API plan and its API limits still apply as usual.

Built-in connectors usually give one AI access to a limited set of apps. Many people use Composio because it lets their AI connect to more apps than it normally supports, or connect to multiple accounts for the same app (e.g. connect Claude to multiple The Companies API accounts).

With Composio, you connect The Companies API once and then use it across different AI assistants without setting it up separately in each one. Connect your apps to Composio once, then connect Composio to whichever AI you use, whether that's Claude, ChatGPT, Hermes, or your own custom assistant.

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