{"uid":"cap_d8bwtSxc1ezX5Qod5F9JK","slug":"gpt-5-5-paid-chat-via-x402-usdc-cdp-bazaar-a8e7fcf1","name":"GPT-5.5 Paid Chat via x402 USDC (CDP Bazaar)","description":"CDP Bazaar and Agentic.Market compatible OpenAI-compatible GPT-5.5 paid chat over exact x402 Base USDC. Stable GET endpoint for low-cost AI agents, GPT-5.5 chat completions, summarization, translation, QA, coding help, and marketplace discovery. Market benchmark: the latest local x402.direct sample found AI-like listing prices with p25 around $0.01 and median around $0.03 per call, while this gateway advertises a $0.110876 compact GPT-5.5 entry request, $0.110876 long-output GPT-5.5 requests, and $0.523889 true max-output GPT-5.5 requests. Pay up to $0.110876 per request with x402 USDC on Base. Exact fixed-price payment and upto token-metered payment are both accepted when clients support them; upto settlements use actual response usage, a 0.0001 minimum, and the selected tier price as the cap. Public paid calls are limited to 700000 input characters and 4096 output tokens.","url":"https://gpt55.558686.xyz/v1/paid/chat-cdp","method":"GET","headers":{},"bodySchema":{"type":"object","$schema":"https://json-schema.org/draft/2020-12/schema","required":["input"],"properties":{"input":{"type":"object","required":["type","method"],"properties":{"type":{"type":"string","const":"http"},"method":{"enum":["GET"],"type":"string"},"queryParams":{"type":"object","properties":{"q":{"type":"string"},"prompt":{"type":"string"},"system":{"type":"string"},"message":{"type":"string"},"max_tokens":{"type":"integer","maximum":4096,"minimum":1}},"additionalProperties":true}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object","required":["id","object","model","choices"],"properties":{"id":{"type":"string"},"model":{"type":"string"},"usage":{"type":"object"},"object":{"type":"string"},"choices":{"type":"array"}},"additionalProperties":true}}}}},"responseSchema":null,"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.110876","displayCostAsset":"USDC","priceDynamic":false,"priceHint":null,"priceStatus":"priced","priceSource":"probe","requiresHandshake":false,"reviewCount":0,"rating":{"score":"0.00","successRate":"0.00","reviews":0,"stars":null,"state":"unrated"},"availabilityStatus":"unknown","priceObserved":null,"sessionDeposit":null,"pricing":{"kind":"static","summary":"$0.110876/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.110876","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.110876","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_GH7jeHnP4J9ozV2oNyNQO","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.110876","costPer":"request","priority":0,"asset":null,"unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Processes GPT-5.5 chat completions via a GET endpoint paid with x402 USDC on Base, supporting summarization, translation, QA, and coding tasks for AI agents.","exampleAgentPrompt":"Summarize this article for me using the GPT-5.5 x402 gateway — here's the text: 'The Federal Reserve held interest rates steady amid concerns about inflation and slowing growth.' Keep output under 100 tokens.","exampleUseCases":[{"title":"Translate content via crypto micropayment","prompt":"Translate the following paragraph from English to French using the GPT-5.5 x402 gateway and pay with my USDC on Base: 'Artificial intelligence is transforming industries by automating complex tasks and enabling smarter decision-making.' Keep the output concise and natural-sounding."},{"title":"Get coding help from GPT-5.5","prompt":"Use the GPT-5.5 x402 endpoint to help me fix this Python function — it's supposed to return the nth Fibonacci number but it's throwing a recursion error. Pay per call with USDC on Base and keep the explanation under 150 tokens."},{"title":"Answer questions with cheap AI","prompt":"Run this question through the GPT-5.5 x402 gateway using a USDC micropayment: 'What are the main differences between supervised and unsupervised machine learning?' I want a clear, brief answer in under 100 tokens."}],"resultDescription":"Returns an OpenAI-compatible chat completion JSON object with an id, model name, choices array containing the generated text, and a usage object showing token counts. Supports upto token-metered billing based on actual response usage.","failureModes":["Insufficient USDC balance or failed x402 payment results in 402 Payment Required","Input exceeding 700000 characters returns a 400 or truncation error","max_tokens above 4096 is rejected","Missing required 'q', 'prompt', or 'message' query parameter returns an error","Network or gateway timeout for long-output requests"],"whenToPreferThis":"Choose this endpoint when you need cheap, per-call GPT-5.5 chat completions paid with USDC on Base via x402, especially for AI agents operating in agentic marketplaces like CDP Bazaar or Agentic.Market. Ideal when you want micropayment-gated AI access at $0.001 per call or less, with GET-based simplicity and OpenAI-compatible output format.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-13T12:56:27.716Z","isFirstParty":false}