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Space Mushroom
Open materials data where every number shows its source
1 follower
Open materials data where every number shows its source
1 follower
A free, open materials database for engineers and AI agents. Every value comes with its unit, test conditions, method and source. 600+ profiles across metals, polymers, ceramics and space materials, plus a read-only MCP server. CC BY 4.0.



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Hi, I run Space Mushroom. Engineering material properties are scattered across datasheets and paywalled handbooks, and most numbers arrive without their test conditions. We collect each value with its unit, conditions, method and a link to the source, and we label anything an AI assistant re-read. It is free, CC BY 4.0, and has an MCP server so agents can look values up and see the source behind each one. It is young: 600+ profiles so far and we add more every day. Tell me which material or property you could not find and I will add it next.