VoltPlan Developer Portal
Everything needed to build on VoltPlan programmatically: API docs for the wiring-diagram MCP server, an OpenAPI specification, and machine-readable content for AI agents. Free, no account, no API key.
VoltPlan API docs
VoltPlan's API is the wiring-diagram MCP (Model Context Protocol) server: it generates 12V/24V/48V wiring diagrams and calculates wire gauge, fuse size, battery bank capacity, inverter size, solar array size, and charging time.
Full API / MCP tool referenceOpenAPI specification
A machine-readable OpenAPI 3.1 document describing the MCP Streamable HTTP endpoint, its request/response envelope, and the full tool catalogue.
voltplan.app/openapi.jsonMCP server
Add the hosted server to Claude, Cursor, or any MCP client — no install required. A live handshake endpoint is also published at the well-known MCP discovery path.
claude mcp add wiring-diagram --transport http https://mcp.voltplan.app/mcp/.well-known/mcp — live endpoint/.well-known/mcp.json — discovery manifestAuthentication
No authentication. The MCP server and OpenAPI-documented endpoint are public and free — no API key, OAuth flow, or account required to call them.
Machine-readable resources
- /llms — human-readable index of every agent-facing resource on VoltPlan.
- /llms.txt — audience, capabilities, and when-to-use guidance in plain markdown.
- /llms-full.txt — single-fetch dump of every guide and blog post.
- /sitemap.xml — canonical URL set for the whole site.
- github.com/YUZU-Hub/wiring-diagram-mcp — MCP server source, MIT license, and changelog.
Questions about the API or MCP server? Write to support@voltplan.app.