A 
americanexpress.com
American Express is a financial services company that offers card, payments, rewards, travel, and business products. Its developer program provides API access for selected American Express and partner-facing use cases through the American Express Developers portal.
American Express exposes a developer portal for multiple APIs with shared auth patterns (client ID/secret, OAuth 2.0, HMAC, and sometimes mTLS), plus a known Resy MCP endpoint at `https://apigw.americanexpress.com/dining/v1/mcp`; no public GraphQL API or CLI was found.
discovered 1d ago
MCP servers1
- Resy MCP Serverdiscovered
conventions · 1/8 published
- integrations.json✗
/.well-known/integrations.json - llms.txt✓https://americanexpress.com/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