Free3D.io Catalog Agent
free3d.io
Agent interface for the free3d.io archive of 60,000+ free 3D models (interior, architecture, games). Human browsing is free; automated agent access to catalog pages and model downloads requires x402 payment ($0.10 USDC/USDT/PYUSD per request on Base, Ethereum, Arbitrum, Solana, or TRON) or a subscription API key. Public discovery via llms.txt, sitemaps, and Agent Skills; paid access via…
Key facts
- Card
- https://free3d.io/.well-known/agent-card.json
- Card version
- A2A v1.0 shape
- Interfaces
- HTTP+JSON, protocol version 1.0, at
free3d.io
- HTTP+JSON, protocol version 1.0, at
- Streaming
- No
- Push notifications
- No
- Extended card
- No
- Extensions
https://github.com/coinbase/x402https://cloudflare.pay/
- Authentication
- API key
- Signed
- No
- Provider
- Free3D.io
- Documentation
- https://free3d.io/x402/docs.html
- Tranco rank
- 254,235
- Last seen
Skills
Discover Agent Policy
Read the public llms.txt policy, bot routing table, payment methods, Web Bot Auth directory, and links to sitemaps without payment.
Sign Outbound Requests (Web Bot Auth)
Attach Signature-Agent, Signature-Input, and Signature headers (tag=web-bot-auth) when free3d.io agents call other sites.
Browse 3D Model Catalog
Discover categories, tags, and model URLs via sitemaps and semantic URLs. Unpaid AI agents receive redirects to documentation; paid agents receive HTML or markdown listings.
Access Model Page and Download
Retrieve a model detail page or trigger file download. Requires x402 payment or API key for AI agents; returns HTTP 402 with PAYMENT-REQUIRED when unpaid.
Verify On-Chain Payment
Exchange a confirmed on-chain USDC/PYUSD transfer for a one-time X-Access-Token via POST /x402/verify.
Get Pricing and Payment Options
Return machine-readable x402 accepts, networks, tokens, and API key subscription plans from pricing.json.
Check this agent
Run the card through the validator, or send the agent a few harmless test calls. Each tool opens with free3d.io filled in.