{"uid":"cap_YeVFd1M_xMk-XEvD3lV3W","slug":"argonautworks-crypto-headline-pulse-api-7743a156","name":"ArgonautWorks Crypto Headline Pulse API","description":"Fresh crypto news and source-linked Bitcoin, Ethereum, Base, and market headlines from four independent publisher feeds, with deterministic topic filtering and no generated claims.","url":"https://argonaut-crypto-headline-pulse.vercel.app/api/v1/headlines?utm_source=zero.xyz","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":{"limit":{"type":"integer","default":10,"maximum":20,"minimum":1},"topic":{"type":"string","maxLength":80,"minLength":1,"description":"Optional case-insensitive phrase matched against headlines, summaries, and categories."}},"additionalProperties":false}},"additionalProperties":false},"output":{"type":"object","required":["type"],"properties":{"type":{"type":"string"},"example":{"type":"object"}}}}},"responseSchema":{"type":"json","example":{"limit":10,"topic":"base","sources":{"failed":[],"configured":["CoinDesk","Decrypt","Ethereum Foundation","The Block"],"responsive":["CoinDesk","Decrypt","Ethereum Foundation","The Block"]},"headlines":[{"url":"https://publisher.example/story","title":"Example headline","source":"Publisher","summary":"Short publisher-provided summary.","categories":["Markets"],"published_at":"2026-08-04T21:00:00.000Z"}],"match_count":3,"observed_at":"2026-08-04T21:30:00.000Z"}},"example":null,"exampleRequest":null,"tags":["x402"],"displayCostAmount":"0.007","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":"$0.007/call","primary":{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.007","per":"call","confidence":"exact"},"accepted":[{"kind":"static","protocol":"x402","network":"base","amountUsd":"0.007","per":"call","confidence":"exact"}]},"paymentMethods":[{"uid":"pm_24tZQotTuLxPe72Gg2WGA","protocol":"x402","methodType":"crypto","chain":"base","mode":"charge","costAmount":"0.007","costPer":"request","priority":0,"asset":"0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913","unit":"request","depositMicros":null,"planRef":null}],"brandName":null,"brandSlug":null,"brandBaseUrl":null,"brandDocsUrl":null,"whatItDoes":"Fetches fresh crypto news headlines from four independent publisher feeds (CoinDesk, Decrypt, Ethereum Foundation, The Block), optionally filtered by topic keyword, returning source-linked articles with summaries and categories.","exampleAgentPrompt":"Pull the latest 15 crypto headlines about Ethereum from the ArgonautWorks Headline Pulse — give me titles, sources, and summaries.","exampleUseCases":[{"title":"Daily crypto market briefing","prompt":"Give me the top 10 crypto market headlines right now — I want titles, sources, and summaries so I can get a quick read on what's moving today."},{"title":"Monitoring Base chain coverage","prompt":"Fetch up to 20 headlines about Base from the crypto news feeds and show me everything that's been published — I'm tracking ecosystem coverage."},{"title":"Bitcoin news alert workflow","prompt":"Check the crypto headline feeds for any recent stories mentioning Bitcoin and show me the titles, links, and summaries — I want to see what's being reported right now."}],"resultDescription":"A JSON object containing the requested headlines array (each with title, URL, source, summary, categories, and published_at), the total match_count, an observed_at timestamp, the active topic filter if any, the limit applied, and a sources breakdown showing which of the four configured publishers (CoinDesk, Decrypt, Ethereum Foundation, The Block) were responsive versus failed.","failureModes":["One or more publisher feeds unresponsive — reflected in sources.failed array with partial results still returned","topic parameter too long (>80 chars) — validation error","limit out of range (<1 or >20) — validation error","No headlines match the topic filter — returns empty headlines array with match_count of 0","Vercel cold start causing slightly elevated latency on first request"],"whenToPreferThis":"Choose this endpoint when you need real, source-linked crypto news headlines from established publishers (CoinDesk, Decrypt, Ethereum Foundation, The Block) without AI-generated or hallucinated claims. It's ideal for agents that need deterministic topic filtering across up to four live feeds in a single call, and where provenance and publisher attribution matter. Prefer it over general web search when you want structured, consistently formatted crypto news with categories and summaries already attached.","instructions":null,"reviewSummary":null,"reviewSummaryHighlights":null,"reviewSummaryConcerns":null,"reviewSummaryGeneratedAt":null,"activationCount":0,"lastUsedAt":null,"lastSuccessfullyRanAt":null,"lastHealthCheckAt":"2026-10-11T00:48:51.203Z","isFirstParty":false,"canonicalSlug":"argonautworks-crypto-headline-pulse-api-7743a156"}