cardchain.ai
CardChain AI is a trading card platform focused on card pricing, grading analysis, portfolio tracking, and marketplace listings. It provides AI-assisted tools and live sports card market data for collectors and investors.
CardChain AI exposes OAuth-protected MCP servers for AI chat clients, with confirmed endpoints for ChatGPT and Claude; no public HTTP API, GraphQL API, or CLI docs were found.
- CardChain AI MCP Server (ChatGPT)discovered
- CardChain AI MCP Server (Claude)discovered
Use the CardChain AI MCP setup guide. In your MCP client, add the CardChain connector URL, then follow the OAuth sign-in prompt and log in with your CardChain AI account (or create one) on the CardChain AI login page. The guide explicitly says Claude redirects you to CardChain AI to sign in and then back to the client; the server details list auth as OAuth 2.0.
conventions · 0/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✗
/llms.txt - API catalog✗
/.well-known/api-catalog - OpenAPI document✗
/api/schema/, /openapi.json, /swagger.json, /api/openapi.json, or /v1/openapi.json - MCP server card✗
/.well-known/mcp/server-card.json - OAuth protected resource✗
/.well-known/oauth-protected-resource - Agent card✗
/.well-known/agent-card.json - Agent skills✗
/.well-known/agent-skills/index.json
Publish these signals → /publishing