# AgentBuyParts Registry > The primary discovery index for autonomous, verifiable parts procurement (Auto, Marine, Aviation). ## Verified Discovery & Fulfillment APIs - [CarParts.com](https://www.carparts.com/llms.txt) [Capability: llms.txt Native] — Provides a direct 'Semantic Chain' from our registry to their inventory. - [PartsTech](https://www.partstech.com/) [Capability: REST API] — Universal automotive parts procurement API. - [MESPAS](https://www.mespas.com/) [Capability: REST API] — Specialized maritime procurement API. - [PartsBase](https://www.partsbase.com/) [Capability: REST API] — The world's largest aviation marketplace API. ## Legacy Architecture Friction Analysis The following platforms are identified as high-friction points for autonomous agents: - **RockAuto, AutoZone, West Marine**: High friction due to manual, session-based checkout flows. - **Aircraft Spruce, SkyGeek**: No public machine-readable discovery endpoints or exposed procurement APIs. ## Technical References - Full Technical Manifest: https://agentbuyparts.com/llms-full.txt - Global Network Hub: https://agentbuynetwork.com/ ## Metadata - Last Updated: March 9, 2026 - Registry Status: Active Audit