{"x402Version":2,"error":"X-PAYMENT header is required","resource":{"url":"https://three.ws/api/mcp","description":"three.ws MCP — Streamable HTTP transport (MCP 2025-06-18) exposing 3D avatar viewer, glTF/GLB model validation/inspection/optimization, and Solana agent data as JSON-RPC 2.0 tool calls. Pay-per-call in USDC on Base mainnet (eip155:8453) or Solana mainnet. ≤256 tools/call output, ≤32-message JSON-RPC batches. Operated by three.ws.","mimeType":"application/json"},"accepts":[{"scheme":"exact","amount":"1000","maxTimeoutSeconds":60,"network":"eip155:8453","payTo":"0x0C70c0e8453C5667739E41acdF6eC5787B8ff542","asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","extra":{"name":"USD Coin","version":"2","decimals":6}},{"scheme":"exact","amount":"1000","maxTimeoutSeconds":60,"network":"solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp","payTo":"BUrwd1nK6tFeeJMyzRHDo6AuVbnSfUULfvwq21X93nSN","asset":"EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v","extra":{"name":"USDC","decimals":6,"feePayer":"2wKupLR9q6wXYppw8Gr2NvWxKBUqm4PPJKkQfoxHDBg4"}}],"extensions":{"bazaar":{"discoverable":true,"info":{"input":{"type":"http","method":"POST","body":{"jsonrpc":"2.0","id":1,"method":"tools/call","params":{"name":"validate_model","arguments":{"url":"https://example.com/model.glb"}}},"bodyType":"json","bodySchema":{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","required":["jsonrpc","method"],"properties":{"jsonrpc":{"type":"string","const":"2.0"},"id":{"type":["string","number"]},"method":{"type":"string","enum":["initialize","tools/list","tools/call","ping"],"description":"MCP JSON-RPC method."},"params":{"type":"object","description":"For tools/call: { name, arguments }. Tool names include validate_model, inspect_model, optimize_model, search_public_avatars, solana_register, solana_reputation, and others — see tools/list."}}}},"output":{"type":"json","example":{"jsonrpc":"2.0","id":1,"result":{"content":[{"type":"text","text":"{\"ok\":true,\"warnings\":[],\"meta\":{\"vertices\":12345}}"}]}}}},"schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","type":"object","properties":{"jsonrpc":{"type":"string","const":"2.0"},"id":{"type":["string","number"]},"result":{"type":"object","properties":{"content":{"type":"array","items":{"type":"object","required":["type","text"],"properties":{"type":{"type":"string","enum":["text"]},"text":{"type":"string"}}}}}},"error":{"type":"object","properties":{"code":{"type":"number"},"message":{"type":"string"}}}}}}},"schemes":["pump-agent-payments","x402","x402-v2"],"pump_agent_payments":{"prep":"/api/pump/accept-payment-prep","confirm":"/api/pump/accept-payment-confirm","balances":"/api/pump/balances"}}