3DAssets.dev
Description
Search and download free CC0 GLB models and game packs, and submit new ones on a user behalf.
What our measurements say
3DAssets.dev is a remote MCP server published at 3dassets.dev. It has been probed 6 times since 9/12/2026. It answered in 6 of them (100.0%), a near-uninterrupted record. Median response time is 517 ms, a delay an agent will notice. It exposes a broad tool surface of 20 tools. On the protocol side it speaks the 2026-07-28 stateless spec.
Agent readability score
Can an LLM agent pick the right tool here — names, descriptions and parameter clarity are assessed.
Agent readability score
Strengths
- Tool names like 'get_pack' and 'search_assets' clearly indicate their purpose.
- Descriptions for tools like 'get_demo' provide actionable context for usage scenarios.
- Most parameters are explicitly marked as required/optional with clear types.
Weaknesses
- Redundant parameters (e.g., 'query' and 'q' in search tools) create ambiguity.
- Some descriptions lack explicit use cases (e.g., 'list_categories' doesn't explain when to use it).
- Error handling and constraints are inconsistently documented across tools.
search_packs— Redundant 'query' and 'q' parameters with unclear distinctionsubmit_asset_from_url— No explanation of 'attestation' parameter's requirementslist_categories— Description doesn't clarify when this tool should be usedcreate_account— No validation rules for email format in parameters
Verdict
Event narrative
Risk: low
Advice
Schema compliance
tools/list structure, inputSchema validity, and a functional smoke test — the components of the 0-100 score.
- tools/list schema valid
- inputSchema is valid JSON Schema
- Smoke test not run this round
- Cold-start: cold 54ms → warm 56ms (penalty 0ms)
Tools
Tools the server advertised in the latest measurement — measured, not catalog-claimed.
search_packsFind cohesive free GLB game kits by text, theme or style. Returns file counts, total bytes and starter scene URLs. Use get_pack for every individual model and loader snippet.
querystringqstringthemestringstylestring
get_packGet a free pack manifest with direct CDN URLs, licences, geometry budgets, loader snippets and its assembled starter scene. Download models individually or use the starter scene.
slugstringrequired
list_demosList the walkable demo scenes staff have built from single packs. Each is a small environment a person can walk through on the site and an agent can load as a layout. Use get_demo for the placements.
get_demoGet one demo: the pack, the spawn point, the walkable bounds, the points of interest, and every placement (public asset slug, position in metres, yaw in degrees) with the CDN URL and bounds of each model placed. Load the models with a plain GLTFLoader and apply the transforms to reproduce the scene.
slugstringrequired
search_assetsSearch the free GLB catalogue on 3dassets.dev (three.js, Blender, Godot, Unity) by text, category (what it is), theme (what world) and style (what look). Returns direct CDN URLs (CORS *, immutable) that load with a plain GLTFLoader. Published models use CC0 1.0 Universal: free personal and commercial use without attribution. Licence metadata is retained in each result.
querystringqstringcategorystringtagstringthemestringstylestringsortstringlimitintegerpageinteger
get_assetFull details for one asset by slug: CDN URL, licence + attribution text, stats, bounding box, animations, and ready-to-paste loader snippets.
slugstringrequired
get_asset_usageCode or steps to load an asset in three.js, React Three Fiber, <model-viewer>, Blender, Godot or Unity.
slugstringrequiredframeworkstring
list_categoriesList categories available on 3dassets.dev (slugs are what other tools accept).
list_tagsList tags available on 3dassets.dev (slugs are what other tools accept).
list_licensesReturns the sole accepted submission dedication: CC0 1.0 Universal. No licence selection is needed.
list_ai_modelsSearch model suggestions from OpenRouter, refreshed hourly. Custom model/tool names are accepted; the list is not exhaustive. Unavailable suggestions never block uploads.
qstring
create_accountCreate a contributor account for the user. Needs only a username and email. There is no password anywhere in this product, so never ask the user for one. A 6-digit code is emailed to them; ask the user to read it to you, then call verify_account to receive their API key. Only do this with the user’s explicit consent.
emailstringrequiredusernamestringrequirednamestringwebsitestring
Availability history
Event log
Derived by comparing consecutive probes — changes in era, protocol version, build and reachability.
- Added to watch — era: Dual-era
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