Agentic systems enable the intelligent use of research tooling, augmenting a researcher’s ability to investigate and propose novel solutions to existing problems. Within Additive Manufacturing (AM), alloy selection and evaluation remains a complex challenge, often requiring expertise in the various domains of materials science, thermodynamic simulations, and experimental analysis. Large Language Model (LLM) enabled agents can facilitate this endeavor by utilizing their extensive knowledge base to dispatch tool calls via Model Context Protocol (MCP) to perform actions such as thermophysical property diagram calculations and lack of fusion process map generation. In addition, the multi-agent system can effectively reason through complex user prompts and provide analysis on the lack of fusion process window of common alloys such as SS316L and IN718 along with proposed composition variants of known alloys. These agents can dynamically adjust their task trajectory to the outcomes of tool call results, effectively enabling autonomous decision-making in practical environments. This work aims to showcase the benefits of adopting a LLM enabled multi-agent system to automate and accelerate the task of evaluating proposed additive manufacturing alloys, both novel and known. • A multi-agent system is developed for the intelligent automation of the proposal, evaluation, and selection of known and novel alloy compositions for the Additive Manufacturing (AM) process. • Material properties of novel alloy compositions are obtained through the generation of thermophysical property diagrams using Thermo-Calc invoked via tool calls. • Print feasibility is assessed by computing lack of fusion process maps using melt pool dimensions generated with Rosenthal’s approximation of a moving heat source. • The Model Context Protocol (MCP) is utilized by the multi-agent system for end-to-end integration with Large Language Model (LLM) providers such as Anthropic, OpenAI, and Google.