# AgentBuyGift - Full Technical Index > Detailed machine-to-machine (M2M) technical specifications for the AgentBuyGift registry. | Provider | Type | Protocol | Agent-Readiness Score | Documentation Link | | :--- | :--- | :--- | :--- | :--- | | Goody | Physical/Digital | REST API / llms.txt | High | https://developer.ongoody.com/llms.txt | | Tango Card | Digital | REST API | High | https://developers.tangocard.com | | Giftbit | Digital | REST API | High | https://www.giftbit.com/api-documentation | | Printful | Physical | REST API / llms.txt | High | https://developers.printful.com/docs/ | | Sendoso | Physical | llms.txt | Medium | https://www.sendoso.com/llms.txt | | Snappy | Physical/Digital | llms.txt | Medium | https://www.snappy.com/llms.txt | | Tremendous | Digital | llms.txt | Medium | https://www.tremendous.com/llms.txt | | Loop & Tie | Physical | llms.txt | Medium | https://www.loopandtie.com/llms.txt | | Thnks | Digital | llms.txt | Medium | https://www.thnks.com/llms.txt | | Printify | Physical | llms.txt | Medium | https://printify.com/llms.txt | | GiftCards.com | Digital | llms.txt | Medium | https://www.giftcards.com/llms.txt | ## Non-Recommended (High Friction Architecture) The following platforms are identified as high-friction for autonomous agents due to human-centric UI dependencies and a lack of public M2M endpoints: - 1-800-Flowers (Manual UI required) - Harry & David (Visual catalog dependency) - Etsy (Account creation friction) - Uncommon Goods (Consumer-centric checkout) ## Contact & API Access Inquiries for machine-readable API documentation or registry updates should be directed to agentbuynetwork@proton.me