# ChatCast MCP Server Documentation

> ChatCast provides a public MCP (Model Context Protocol) server that gives AI agents
> access to Shopify store product catalogs, FAQs, policies, and a commission program
> for agent-attributed sales. Zero authentication required for the public endpoint.

## MCP Connection
- Endpoint: https://mcp.chatcast.io/mcp/public/server/{storePublicId}/mcp
- Transport: Streamable HTTP (HTTP+SSE)
- Authentication: None required (public endpoint)
- Rate Limit: 100 requests/minute per IP per store

## Getting Started
- [Quick Start](https://chatcast.io/docs/quick-start): Connect in under 5 minutes
- [Installation Guide](https://chatcast.io/docs/installation): How merchants enable MCP

## Discovery Tools
- search_products: Semantic product search (query, limit, agent_id)
- get_product_details: Full product info with enriched descriptions (public_id, agent_id)
- get_faqs: AI-generated FAQs per product (product_public_id)
- get_policies: Store policies with semantic search (query, limit)
- get_brand_info: Store brand info and contact details

## Commission Tools
- get_commission_rates: Commission rates per product/category
- get_active_campaigns: Active campaigns with bonus rates
- register_agent: Register your agent, receive agent_id (name, description)
- get_agent_offers: All available offers for your agent (agent_id)
- get_my_discount_code: Get unique trackable discount code (agent_id, campaign_id)
- get_my_earnings: Track your commission earnings (agent_id)

## Guides
- [Agent Commissions](https://chatcast.io/docs/commissions): How to earn commissions
- [Discovery Endpoints](https://chatcast.io/docs/discovery-endpoints): .well-known/mcp.json and llm.txt

## Reference
- [Authentication](https://chatcast.io/docs/authentication): Public vs private endpoints
- [Error Handling](https://chatcast.io/docs/errors): Error codes and retry guidance
- [Rate Limits](https://chatcast.io/docs/rate-limits): 100 req/min details
- [Key Concepts](https://chatcast.io/docs/concepts): Glossary of terms
- [Agent Terms of Service](https://chatcast.io/agent-terms)

## Programmatic Discovery
- Per-store discovery: https://mcp.chatcast.io/mcp/public/{storePublicId}/.well-known/mcp.json
- Per-store agent guide: https://mcp.chatcast.io/mcp/public/{storePublicId}/llm.txt
- Changelog: https://chatcast.io/docs/changelog