{"uid":"cap_Y_DaBB91U3atyI6PXIlH5","slug":"inference402-keyword-extraction-d909c9db","name":"Inference402 Keyword Extraction","description":"Pay-per-call AI inference for agents: chat (Llama 3.3 70B / 3.1 8B), structured JSON, summarize, translate (incl. Egyptian Arabic), extract, classify, sentiment, keywords, rewrite, embeddings, moderation, vision and speech-to-text. USDC on Base mainnet over x402. No API key, no account.","url":"https://inference402.worlddata402.workers.dev/v1/keywords?utm_source=zero.xyz","method":"GET","headers":{},"bodySchema":{"type":"object","properties":{"text":{"type":"string","maxLength":8000}}},"responseSchema":{"type":"json","example":{"model":"@cf/meta/llama-3.1-8b-instruct-fp8","keywords":["x402","AI agents","USDC","Base","Ethereum L2","Coinbase","pay per request"]}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.002","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":"$0.002/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.002","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_KE2WhKn_7IyNwlBw-KsvM","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.002","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Extracts the most relevant keywords from a given text using Llama 3.1 8B, billed per-call via USDC on Base with no API key required.","exampleAgentPrompt":"Pull the most important keywords from this text: 'Ethereum layer-2 networks like Base are enabling fast, low-cost micropayments using USDC stablecoins, making pay-per-request AI inference economically viable for autonomous agents.'","exampleUseCases":[{"title":"SEO keyword tagging for blog posts","prompt":"Extract the main keywords from this blog post draft so I can tag it properly for SEO: 'Decentralized finance is reshaping how individuals access credit, savings, and investment products without relying on traditional banks.'"},{"title":"Automatic topic labeling for news articles","prompt":"I have a news article here — can you pull out the key terms so I can auto-label it in my CMS? The article is: 'The Federal Reserve announced a pause in interest rate hikes, citing cooling inflation and slowing job growth in the manufacturing sector.'"},{"title":"Keyword extraction for research summarization","prompt":"What are the most relevant keywords in this abstract? 'Large language models fine-tuned on domain-specific corpora demonstrate significantly improved performance on specialized tasks such as medical diagnosis, legal document review, and scientific literature synthesis.'"}],"resultDescription":"Returns a JSON object containing a 'keywords' array of the most relevant terms and phrases extracted from the input text, along with a 'model' field identifying the Llama 3.1 8B FP8 model used for inference.","failureModes":["Text exceeds 8000 character limit — request rejected or truncated","Payment not received or insufficient USDC balance — 402 response with payment details","Empty or missing 'text' parameter — likely returns an error or empty keywords array","Model inference timeout on very complex or dense text — may return 5xx error","Malformed GET request — 400 bad request"],"whenToPreferThis":"Choose this endpoint when you need lightweight, cost-effective keyword extraction without API key registration or monthly subscriptions — ideal for agents that process text on-demand and pay only per call via USDC on Base. Best for short-to-medium texts (under 8000 chars) where speed matters and you want a simple keywords array output rather than a full NLP pipeline.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-19T12:38:58.288Z","isFirstParty":false,"canonicalSlug":"inference402-keyword-extraction-d909c9db"}