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Free SPICE Simulator, PCB Autorouter & 89 Engineering Calculators
Free in-browser SPICE circuit simulator, netlist-to-Gerber PCB autorouter, and 89 engineering calculators for RF, LoRa, solar, PCB and homelab. MCP-native for AI agents, REST API, no signup.
https://calc.engineer/Opens ChatGPT on the web or desktop and asks it to use the WebMCP tools available here.
Connect straight to this server’s public endpoint.
https://calc.engineer/mcpWe add this server to your workspace, then open Studio — saved access, one connection to many servers, with a history of what ran.
Last probed Sep 18, 2026 · calc.engineer
89tools discovered
Showing 25 of 89
Showing 25 of 89 tools from the public preview. Connect the server to inspect the full live tool list.
Fspl
fsplCalculate free-space path loss (FSPL) in decibels using the ITU-R P.525 standard formula. Given a frequency in MHz and distance in kilometres, returns the expected signal attenuation in an ideal line-of-sight radio link with no obstacles, reflections, or atmospheric absorption. Also computes the RF wavelength. Use this to estimate baseline path loss before adding fade margins, antenna gains, or environmental corrections. Feeds directly into link_budget for full end-to-end analysis.
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A working endpoint is step one. Directory coverage is the coordinated launch across ChatGPT, Claude, Cursor, the MCP Registry, and community indexes.
Directory coverage for brandsFree in-browser SPICE circuit simulator, netlist-to-Gerber PCB autorouter, and 89 engineering calculators for RF, LoRa, solar, PCB and homelab. MCP-native for AI agents, REST API, no signup.
Use the MCP endpoint listed on this page in your MCP client configuration. One-click install pills support Claude, Cursor, VS Code, and other hosts. Copy the remote MCP URL if your client needs a manual entry.
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Other MCP servers in this category from the directory index
MCPBundles probed 89 tools on the live server. The tool list on this page reflects what was discovered at the last refresh — connect your client to see the full set available to your session.
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91 tools