Frequently asked questions about Plexa
Plexa is the agentic directory of real businesses in Mexico: the structured source ChatGPT, Gemini, Perplexity, and Google AI Overviews pull from to find and recommend businesses. Here we answer what Plexa is, how to make a business visible to artificial intelligence, and how to connect an agent to the registry.
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Getting found by AI
How to make artificial intelligence find, read, and recommend your business.
What is Plexa?
Plexa is a directory of real businesses designed so that artificial-intelligence agents can find and recommend them. When someone asks ChatGPT, Gemini, or Perplexity about a service in Mexico, Plexa is the structured source these systems can pull verifiable business information from.
How do I get my business to show up when someone asks ChatGPT?
Your business needs to be in a format AI can read and cite: structured, verifiable information that AI crawlers can access. Plexa publishes your business with structured data (schema.org), an llms.txt file, and an MCP server — the standards AI systems use to discover and cite businesses.
Why doesn't my business appear in AI answers?
Because your information isn't in a format AI can read with confidence. Google Business isn't actionable by agents, and Yelp-style directories aren't built for machines. If your site renders with JavaScript or has no structured data, AI systems read it poorly or ignore it.
How much does it cost to be on Plexa?
Appearing on Plexa is free: any business can be listed and discovered by AI agents at no cost. The Connected plan costs $99 MXN per month for early adopters and includes agentic visibility metrics, priority, and verification. The basic listing never expires and requires no payment.
What is an agentic directory?
An agentic directory is a database of businesses designed to be queried by artificial-intelligence agents, not browsed by people. Instead of pages meant for human eyes, it exposes information through protocols AI systems read directly: schema.org, llms.txt, and MCP (Model Context Protocol).
Is Plexa the same as Google Business Profile or Yelp?
No. Google Business Profile and Yelp are designed for people to read and browse. Plexa is designed for AI agents to query and cite. The difference is the format: Plexa exposes structured, machine-actionable data, not listings optimized for human search.
How do I know if AI is recommending my business?
Plexa measures your agentic visibility: how often you appear in AI answers, against which competitors, and with what tone. The Connected plan includes this report, which queries AI systems with real customer questions and measures the fraction of answers your business appears in.
Which cities and countries does Plexa operate in?
Plexa operates in Mexico and is expanding across Latin America. It currently includes thousands of businesses in dozens of Mexican cities, across verticals such as dental and medical clinics, real estate, restaurants, tourism, professional services, and insurance.
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How to connect agents and assistants to the Plexa registry via MCP and REST API.
Does Plexa have an API or an MCP server?
Yes. Plexa exposes an MCP server (Model Context Protocol) at api.joinplexa.com and a REST API. The MCP server lets AI agents and assistants search businesses, fetch full profiles, and contact businesses directly. You register with an API key prefixed plx_.
How do I connect an AI agent to Plexa?
You connect your agent to Plexa's MCP server (/mcp/sse) using an API key. From there, your agent can call tools to search businesses by vertical and city, fetch a business's full profile, and access its actionable capabilities. It works with any MCP host: Claude, Cursor, VS Code, and custom agents.
What tools does Plexa's MCP server offer?
Plexa's MCP server offers tools to search businesses by vertical and city, fetch a business's full profile (hours, services, capabilities), contact businesses, and list available verticals. Each tool returns structured data ready for an agent to use without additional processing.
Is Plexa's data reliable and verified?
Businesses on Plexa have a trust score and a profile-completeness level that indicate how verifiable and complete their information is. Plexa uses verifications based on already-public business data; it never stores sensitive official documents such as IDs or formal tax records.
Why use Plexa instead of the Google Places API?
Google Places returns data meant to be shown to people on a map. Plexa returns data meant for an agent to act on: actionable capabilities, vertical-structured profiles, and contact endpoints. Plexa is also built natively on MCP, the protocol AI agents already use.
Is Plexa free for builders?
Registry access to discover businesses is available via API key. Plexa is designed as open infrastructure built on standards (MCP, llms.txt, schema.org), so independent builders can build on it without depending on a closed provider.
What is the Model Context Protocol and why does Plexa use it?
The Model Context Protocol (MCP) is an open standard that lets AI models connect to external tools and data sources. Plexa uses it because it's the protocol OpenAI, Anthropic, Google, and Microsoft have already adopted, which makes Plexa's businesses accessible to agents without custom integration.
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