"3d print" matching MCP connectors:

Bitbybit 3D parametric CAD API, version-exact, for coding agents: search, describe, examples, guide

Six checks: llms.txt, llms-full.txt, .md twins, Accept: text/markdown, sitemap.md, alt link. Free.

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Any site's llms.txt: find the covering index, read its linked docs as markdown, search sections.

LLMtoMD is the memory layer for AI coding agents. It converts any document — PDF, DOCX, slides, spreadsheets, images, audio, even whole websites — into clean, structured Markdown, then exposes it over MCP so your agent can search your FRDs, specs, and API docs on demand instead of re-reading (or forgetting) them.