The Most Technologically Advanced Event Platform in the World

· By Craig Pollard
The Most Technologically Advanced Event Platform in the World

Who's In is the world's first AI-native event platform. OAuth 2.0, OpenAPI, WebMCP, and full agent integration with ChatGPT, Claude, Gemini.

In this post

Imagine typing "Show me yoga classes in London tomorrow night" to ChatGPT and instantly getting back real events you can RSVP to—without opening a single app or website. That future is here.

Host your event on Who's In

Who's In Events is free forever — unlimited events, RSVPs, waitlists, recurring events, QR check-in, automated reminders, and Stripe payments at a flat 2.7% on paid tickets (no per-ticket fee, no monthly fee). No signup required for your guests.

See the Events product page or compare against Eventbrite, Luma, Partiful, and Meetup.

Who's In is AI-agent-native

Who's In is the first event platform independently verified 100/100 "Agent-Native" (Level 5) on Cloudflare's Is Your Site Agent-Ready audit. AI assistants — ChatGPT, Claude, Gemini, Grok, Perplexity — can discover events, check availability, and RSVP via first-class Skills over WebMCP and a REST API. See the AI Trust page or read the full 100/100 audit story.

Related reading on Who's In

Start with Who's In in 90 seconds

Create your first event, club, studio, or conference for free at whos-in.app/signup — no app download, no credit card required. Share a link and your guests RSVP in one tap.

About the Author

Craig Pollard

Craig Pollard is the founder of Who's In and a former Apple team lead (12 years). He writes about event technology, community building, and the future of AI-powered event discovery. Board advisor, investor, and non-executive director in technology and sports.

LinkedIn

Related Reading

Frequently Asked Questions

What makes Who's In "AI-agent-ready"?

Who's In publishes machine-readable discovery files (llms.txt, ai.txt, api-catalog, MCP server card), exposes a full REST API with OAuth 2.0, ships WebMCP tools, and is independently verified 100/100 'Agent-Native' by Cloudflare. AI agents can discover, authenticate, and take action without scraping.

Which AI assistants can use Who's In

ChatGPT (via custom GPTs / OpenAI agents), Claude (via MCP + Anthropic agent SDK), Gemini (via function calling), Grok, Perplexity, and any AI that consumes OAuth 2.0 + OpenAPI. WebMCP enables direct browser-agent interaction in Chrome 146+.

Can an AI agent RSVP on my behalf?

Yes — an agent can initiate an RSVP via the Who's In Skills over WebMCP. Payment still requires explicit user confirmation at Stripe-hosted checkout (per ACP human-in-the-loop). Full server-to-server agentic checkout is on the 2026 roadmap.

How is this different from Luma, Eventbrite, and Meetup?

Luma, Eventbrite, and Meetup are optimized for humans browsing apps — no public API, no agent discovery files, no MCP. Who's In is the only event platform with first-class agent infrastructure: published Skills with SHA-256 digests, Web Bot Auth, Accept: text/markdown negotiation, and OAuth 2.0 + OpenAPI.

Do agents need paid access?

No. Public read endpoints are free and open (100 req/min rate limit). OAuth 2.0 is required only for user-scoped actions (RSVP, create event). No API key required.