Agent directory

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
Streaming
No
Push notifications
No
Extended card
No
Extensions
  • https://github.com/coinbase/x402
  • https://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.

    Id discover-policy · Tags: discovery, policy, llms, public, web-bot-auth

  • 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.

    Id sign-outbound · Tags: web-bot-auth, signatures, ed25519

  • 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.

    Id browse-catalog · Tags: catalog, 3d-models, sitemap, interior, architecture

  • 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.

    Id access-model · Tags: download, 3d-model, x402, paywall

  • Verify On-Chain Payment

    Exchange a confirmed on-chain USDC/PYUSD transfer for a one-time X-Access-Token via POST /x402/verify.

    Id verify-legacy-payment · Tags: x402, payment, verify, token

  • Get Pricing and Payment Options

    Return machine-readable x402 accepts, networks, tokens, and API key subscription plans from pricing.json.

    Id get-pricing · Tags: pricing, x402, payment

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.