OneTapCheckIn MCP server for AI agents and assistants

Securely connect your AI agents and chatbots (Claude, ChatGPT, Cursor, etc) with OneTapCheckIn MCP or direct API to manage events, update attendee profiles, track check-ins, and send attendance alerts through natural language.

OneTapCheckIn logoOneTapCheckIn
Api Key

OneTapCheckIn is an event attendance platform for managing attendees, profiles, check-ins, passports, integrations, and alerts. It helps teams run smoother events with faster check-ins and clearer attendance tracking.

19 Tools

Try OneTapCheckIn now

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

TOOL ROUTER PLAYGROUND
OneTapCheckIn
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TOOLS

Supported Tools

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

Add Participants

Add one or more existing profiles to one or more lists without checking them in.

Create List

Create an event/check-in list.

Create Profile

Create one person profile without adding it to a list.

Create Profiles

Create 1 to 25 person profiles in input order using one provider request per profile.

Delete List

Permanently delete one list by ID.

Delete Profile

Permanently delete one profile.

Find Lists

Get one list by exact ID or search the connected organization's lists.

Find Participants

Get one participant by exact ID or search attendance records by list, profile, status, text, or date range.

Find Profiles

Get one profile by ID or search profiles by identity, list, passport, or check-in code.

Get Organization

Return the organization associated with the connected API key.

Get Profile Custom Fields

Return the organization's configured profile custom-field definitions so an agent can use valid field names and value types when creating or updating profiles.

List Alerts

Return one page of organization alert and automation rules together with outbound check-in confirmation settings.

List Passports

List one page of standard passports for exactly one profile or participant.

Remove Participant

Remove one participant record from its list.

Update List

Partially update a list.

Update Participant

Update metadata on one participant record without performing check-in or checkout.

Update Participant Attendance

Check in, check out, undo check-in, or undo checkout for one known participant.

Update Participant Attendance Batch

Apply one shared check-in, checkout, undo check-in, or undo checkout operation to 1 to 25 participants in input order, using one provider request per item.

Update Profile

Partially update one profile.

SETUP GUIDE

Connect OneTapCheckIn 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: ["onetapcheckin"],
  mcp: true,
});
Create a session scoped to OneTapCheckIn 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: "List attendees who have not checked in for tonight's event",
  stopWhen: stepCountIs(10),
});

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

Connect OneTapCheckIn 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: ["onetapcheckin"] });
const tools = await session.tools();
Initialize Composio with the OpenAI Responses provider and create a session scoped to OneTapCheckIn
3

Run OneTapCheckIn tools with your agent

typescript
let response = await client.responses.create({
  model: "gpt-5.6-sol",
  tools,
  input: [{ role: "user", content: "List attendees who have not checked in for tonight's event" }],
});

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 OneTapCheckIn tool calls through the session, and print the final answer

Why Use Composio?

AI Native OneTapCheckIn Integration

  • Supports both OneTapCheckIn MCP and direct API based integrations
  • Structured, LLM-friendly schemas for reliable attendee, event, passport, and check-in workflows
  • Rich coverage for reading, writing, and querying your OneTapCheckIn event data

Managed Auth

  • Secure API key handling without hard-coding OneTapCheckIn credentials in your agent code
  • Central place to manage, scope, and revoke OneTapCheckIn access
  • Per user and per environment credentials so staging, production, and internal tools stay cleanly separated

Agent Optimized Design

  • Tools are tuned for natural language tasks like checking in guests, finding absent attendees, and reviewing event attendance
  • 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 OneTapCheckIn
  • Scoped, least privilege access to OneTapCheckIn events, attendees, passports, and attendance alerts
  • Full audit trail of agent actions to support review and compliance after every event
FAQ

Frequently asked questions

Yes, OneTapCheckIn requires you to configure your own API key credentials. Once set up, Composio handles secure credential storage and API request handling for you. You can configure access with auth_configs.create(), link user accounts with connected_accounts.link(), and expose OneTapCheckIn tools to agents through mcp.create().

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

When you connect a OneTapCheckIn account through Composio, every action runs under that account, so anything the agent creates, sends, or changes shows up in OneTapCheckIn 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 OneTapCheckIn. If OneTapCheckIn 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 OneTapCheckIn 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 OneTapCheckIn 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 OneTapCheckIn rejects the old key. Create a new key in OneTapCheckIn and reconnect the account from the Composio dashboard or by asking your agent to reconnect OneTapCheckIn. Nothing else changes.

Composio's free Hobby plan includes 100,000 tool calls per month with no credit card, which covers most personal OneTapCheckIn use. Paid plans add higher limits and team features. Your OneTapCheckIn 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 OneTapCheckIn accounts).

With Composio, you connect OneTapCheckIn 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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