MCP-Atlas: A Large-Scale Benchmark for Tool-Use Competency with Real MCP Servers. - Chaithanya Bandi; Ben Hertzberg; Geobio Boo; Tejas Polakam; Jeff Da; Sami Hassaan; Manasi Sharma; Andrew Park; Ernesto Hernandez; Dan Rambado; Ivan Salazar; Rafael Cruz; et al. (CoRR, 2026)