{"uid":"cap_AKpDNpQ6jLBxMYStWVSxs","slug":"openweb-ninja-copilot-ai-chat-via-x402-4e1a29c9","name":"OpenWeb Ninja Copilot — AI Chat via x402","description":"40+ public web-data, SERP, e-commerce, real-estate, finance and AI-search APIs, payable per call over x402 (USDC on Base, Polygon, Arbitrum). No account or API key required. Most endpoints $0.003; AI-model endpoints $0.005.","url":"https://x402.openwebninja.com/copilot/copilot","method":"POST","headers":{},"bodySchema":{"type":"object","properties":{"mode":{"type":"array","items":{"type":"string"},"description":"Use normal chat mode (i.e. CHAT), reasoning mode (i.e. REASONING), or GPT-5 (SMART)."},"message":{"type":"array","items":{"type":"string"},"description":"Message to send to Copilot."},"markdown":{"type":"array","items":{"type":"boolean"},"description":"Whether to return the Copilot response message in markdown format. By default, the bot reply is in plain text."},"conversation_id":{"type":"array","items":{"type":"string"},"description":"Conversation id. In case not supplied, a new conversation will be created and conversation_id will be returned by the endpoint."}}},"responseSchema":{"type":"json","example":{}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.005","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":"$0.005/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.005","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_MXW0PKVOnRIJTY9IMuuu6","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.005","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Send a message to an AI Copilot (normal chat, reasoning, or GPT-5 mode) and receive a response, paid per call via x402 with no API key required.","exampleAgentPrompt":"Ask the Copilot in reasoning mode: 'What are the main differences between transformer and diffusion model architectures?' and return the answer in markdown format.","exampleUseCases":[{"title":"On-demand AI reasoning without a subscription","prompt":"Use Copilot in REASONING mode to explain the pros and cons of microservices vs monolith architecture for a startup, and give me the answer in markdown."},{"title":"GPT-5 powered writing assistance","prompt":"Use the SMART (GPT-5) mode to draft a compelling product description for a noise-cancelling headphone aimed at remote workers — return it in plain text."},{"title":"Multi-turn AI conversation continuation","prompt":"Continue my existing Copilot conversation (ID: abc-123) in normal CHAT mode and ask: 'Can you summarize what we discussed so far and suggest next steps?'"}],"resultDescription":"Returns a JSON object containing the AI-generated text reply (in plain text or markdown depending on the flag), along with a conversation_id that can be used to continue the same conversation in future calls.","failureModes":["Payment not processed or insufficient USDC balance — request rejected before AI response is generated","Invalid mode value (not CHAT, REASONING, or SMART) — likely returns an error or unexpected behavior","Upstream Copilot/GPT-5 service unavailable — may return 5xx or timeout","Conversation ID not found or expired — may start a new conversation instead of continuing","Message too long or malformed — upstream model may reject or truncate"],"whenToPreferThis":"Choose this endpoint when you need on-demand access to AI chat (including GPT-5 and reasoning modes) without creating an account or holding an API key — just pay $0.005 USDC per call via x402 on Base, Polygon, or Arbitrum. Ideal for agents that need occasional LLM access in a permissionless, crypto-native context, or when you want to avoid subscription lock-in. Use over alternatives when multi-turn conversation continuity via conversation_id is needed alongside per-call micropayment.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-09-15T06:53:10.275Z","isFirstParty":false}