3dassets MCP Server

3DAssets.dev for agents

Free, web-optimised CC0 GLB models and game asset packs for three.js, React Three Fiber, Blender, Godot, Unity and any glTF-capable tool. This repository holds the machine-readable pieces of https://3dassets.dev in one place for directories and agent tooling that index GitHub:

• SKILL.md: the agent skill, a copy of https://3dassets.dev/skill.md (kept in sync daily by a workflow)
• bin/3dassets-mcp.js: the 3dassets-mcp npm package, a stdio bridge to the hosted server
• .mcp.json: MCP client configuration for the hosted server
• server.json: the official MCP Registry entry
• llms-install.md: setup notes for agents that install from a README

The site, the API and the MCP server itself are hosted at 3dassets.dev, so the only code here is the thin stdio bridge; the catalogue is at https://3dassets.dev/assets.

MCP server

Two ways in. Hosted (Streamable HTTP) needs nothing installed; the npm package runs the same server over stdio for clients that only speak stdio or want a pinned dependency. Both expose the same tools.

# stdio, via npm (bridges to the hosted server; no local state)
npx -y 3dassets-mcp

{
  "mcpServers": {
    "3dassets": { "command": "npx", "args": ["-y", "3dassets-mcp"] }
  }
}

Set THREEDASSETS_API_KEY in the environment to submit models on the user's behalf; leave it unset for read-only use.

Hosted endpoint

Streamable HTTP endpoint: https://3dassets.dev/mcp. Search and download need no auth. Submitting models on a user's behalf takes their API key as a Bearer token; https://3dassets.dev/auth.md explains how an agent obtains one without the user ever handling a password.

# Claude Code
claude mcp add --transport http 3dassets https://3dassets.dev/mcp

# Codex CLI
codex mcp add 3dassets --url https://3dassets.dev/mcp

# VS Code
code --add-mcp '{"name":"3dassets","type":"http","url":"https://3dassets.dev/mcp"}'

Cursor, Windsurf or any mcp.json:

{
  "mcpServers": {
    "3dassets": { "url": "https://3dassets.dev/mcp" }
  }
}

Tools: search_assets, search_packs, get_pack, list_demos, get_demo, get_asset, get_asset_usage, list_categories, list_tags, list_licenses, list_ai_models, create_account, verify_account, submit_asset_from_url, get_upload_url, finalize_upload, my_assets, update_asset, submit_pack, my_packs. Full reference: https://3dassets.dev/docs/mcp.

Skill

npx skills add 3dassets-dev/3dassets

Or point any agent at https://3dassets.dev/skill.md directly. The skill uses plain HTTP, so it works without MCP.

REST API

Base https://3dassets.dev/api/v1, OpenAPI at https://3dassets.dev/api/v1/openapi.json, guide at https://3dassets.dev/docs/api. Every asset also has a Markdown view at https://3dassets.dev/assets/{slug}.md.

Discovery documents

• https://3dassets.dev/.well-known/mcp/server-card.json
• https://3dassets.dev/.well-known/api-catalog
• https://3dassets.dev/.well-known/agent-skills/index.json
• https://3dassets.dev/.well-known/ai-catalog.json
• https://3dassets.dev/llms.txt

Licence

Every asset on the site is CC0 1.0. The files in this repository are CC0 1.0 too.

Questions: hello@3dassets.dev