The Materials MCP server,
connected in one click.
Read-only sourced engineering materials data: every value with unit, conditions and source. Connect the official Materials MCP server to Claude, ChatGPT, or Cursor through gate — one gateway URL, no config files, security-checked.
Free to start · No credit card · No hosting needed
Add Materials to your AI in one minute
Pick your client. Copy, paste, done — or let gate handle sign-ins and policies for you.
claude mcp add --transport http materials https://spacemushroom.com/mcpRun in your terminal, then restart Claude Code.
Materials · https://spacemushroom.com/mcp
What your AI can do with Materials
Real prompts you can type the moment it's connected — no setup, no docs to read.
“Use “search_materials”: Find materials by name, abbreviation or formula. Optionally filter by category slug (for example polymers, metals, energy). Returns ids to u.”
“Use “get_material”: The sourced record of one material: sourced numbers with conditions, method and source location, plus uses, hazards, failure modes, corrosio.”
“Use “compare”: Line several materials up on one property, with each value, its conditions and its source. Values are also given in the property's canonical.”
“Use “list_properties”: The property names in use, with their canonical unit and whether higher or lower is better. Use these names with get_material and compare.”
How secure is the Materials MCP server?
Every server in the gate directory has to pass the same four checks before your AI can touch it. Here's how Materials holds up.
Official endpoint
Operated by Materials (spacemushroom.com) at its documented MCP endpoint — not a third-party mirror or community re-host.
No sign-in needed
This server only exposes public data — no account and no credentials are involved when you connect.
Scanned before it goes live
gate checks every tool for prompt injection, hidden instructions, data-exfiltration hints, and over-broad permissions before the server is available through your gateway.
Watched for drift
If Materials adds or changes tools later, gate re-scans and alerts you — before your AI acts on the change.
Connected in three steps
Connect your gate
Add one gateway URL to Claude, ChatGPT, or any MCP client. One-time setup, about two minutes.
Pick Materials
Choose Materials in the gate directory. No sign-in needed.
Use it anywhere
Materials's tools are live in every AI client you've connected — with rules and logging built in.
Free to start · No credit card · No hosting needed
The actual tools Materials exposes
Fetched live from the official endpoint and re-checked daily by gate — not marketing copy.
search_materials — Find materials by name, abbreviation or formula. Optionally filter by category slug (for example polymers, metals, energy). Returns ids to u
get_material — The sourced record of one material: sourced numbers with conditions, method and source location, plus uses, hazards, failure modes, corrosio
compare — Line several materials up on one property, with each value, its conditions and its source. Values are also given in the property's canonical
list_properties — The property names in use, with their canonical unit and whether higher or lower is better. Use these names with get_material and compare.
get_term — A plain-language definition of a technical term or abbreviation used on material pages, for example ARC, SoC or adiabatic.
find_materials — Requirements in, candidates out. Each material gets a verdict: pass (every constraint met by a sourced value), fail, or unknown (no data on
list_claims — Every current sourced value for one material (optionally one property) in canonical units, with evidence level and a claim_id. Use the claim
prove_claim — Everything behind one value: as printed in the source, converted, the evidence level and what it means, the conditions, and each source with
+ 3 more tools once connected
Who runs the Materials MCP server?
The Materials MCP server at a glance
https://spacemushroom.com/mcpQuestions, answered
Is there an official Materials MCP server?
Yes — Materials operates its own remote MCP server at spacemushroom.com. gate connects you to that official endpoint and adds security scanning, per-tool access rules, and an activity log on top.
How do I connect Materials to Claude or ChatGPT?
Add gate's gateway URL to your AI client once, then pick Materials in the directory. No account or sign-in is needed. From then on, Materials's tools are available in every client you've connected to gate.
Do I need to host anything?
No. Materials runs the server, and gate is fully managed. You just connect one URL — there's nothing to install, deploy, or maintain.
Is the Materials MCP server safe to connect?
It's the vendor's official endpoint, and gate scans its tools for prompt injection and hidden instructions before it goes live, re-checks it whenever it changes, and lets you allow, block, or require approval for every single tool.
Is it free?
Yes — you can get started with gate for free and connect Materials in minutes. No credit card required.
Connect more than just Materials
Every server below works through the same gateway URL — connect once, add tools anytime.
Squarespace DomainsDesignView →Set up Materials in: Claude · Claude Code · ChatGPT · Cursor · VS Code