Metaplex x402 API 参考

import { getModels, getPricing } from '@metaplex-foundation/x402';

// Available model IDs, e.g. 'openai/gpt-5.4-mini'.
const models = await getModels();

// Per-model token rates, request minimums, RPC method prices, and legal URLs.
const pricing = await getPricing();

{
  "object": "list",
  "data": [
    { "id": "anthropic/claude-opus-4.8", "object": "model", "created": 0, "owned_by": "anthropic" },
    { "id": "openai/gpt-5.4-mini", "object": "model", "created": 0, "owned_by": "openai" }
  ]
}

import { METAPLEX_X402_BASE_URL } from '@metaplex-foundation/x402';
import OpenAI from 'openai';

const openai = new OpenAI({
  // The OpenAI SDK requires a value, but this gateway authenticates by payment.
  apiKey: 'x402',
  baseURL: METAPLEX_X402_BASE_URL,
  fetch: fetchWithPayment,
});

const completion = await openai.chat.completions.create({
  model: 'openai/gpt-5.4-mini',
  messages: [{ role: 'user', content: 'Say hi in one word.' }],
});

import { createOpenAICompatible } from '@ai-sdk/openai-compatible';
import { METAPLEX_X402_BASE_URL } from '@metaplex-foundation/x402';
import { generateText } from 'ai';

const metaplex = createOpenAICompatible({
  name: 'metaplex-x402',
  apiKey: 'x402',
  baseURL: METAPLEX_X402_BASE_URL,
  fetch: fetchWithPayment,
});

const { text } = await generateText({
  model: metaplex.chatModel('openai/gpt-5.4-mini'),
  prompt: 'Say hi in one word.',
});

const image = await openai.images.generate({
  model: 'openai/gpt-image-1.5',
  prompt: 'A yellow square.',
  size: '1024x1024',
});

import { generateImage } from 'ai';

const { image } = await generateImage({
  model: metaplex.imageModel('openai/gpt-image-1.5'),
  prompt: 'A yellow square.',
  size: '1024x1024',
});

import { createSolanaRpcFromTransport, type RpcTransport } from '@solana/kit';
import { METAPLEX_X402_RPC_URL } from '@metaplex-foundation/x402';

const rpcTransport: RpcTransport = async ({ payload, signal }) => {
  const response = await fetchWithPayment(METAPLEX_X402_RPC_URL, {
    method: 'POST',
    headers: { 'Content-Type': 'application/json' },
    body: JSON.stringify(payload),
    signal: signal ?? null,
  });

  return response.json();
};

const rpc = createSolanaRpcFromTransport(rpcTransport);
const slot = await rpc.getSlot().send();

import { METAPLEX_X402_RPC_URL } from '@metaplex-foundation/x402';
import { Connection } from '@solana/web3.js';

const connection = new Connection(METAPLEX_X402_RPC_URL, {
  fetch: fetchWithPayment,
});
const slot = await connection.getSlot();