Multi-Source News

Live 402 challenge

Captured by the enrichment pass, not read just now. Prices can change — always read the 402 the endpoint answers with.

{
  "error": "payment required",
  "accepts": [
    {
      "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
      "extra": {
        "name": "USD Coin",
        "version": "2"
      },
      "payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
      "amount": "10000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://x402.professorsausages.com/news/headlines",
    "tags": [
      "news",
      "headlines",
      "search",
      "sentiment",
      "gdelt"
    ],
    "mimeType": "application/json",
    "description": "Newest headlines from a deduped, tiered direct-feed pile (official press + wires/majors + trade press + Hacker News + gated GDELT), newest first — filter by category, source, and language",
    "serviceName": "Multi-Source News"
  },
  "extensions": {
    "help": {
      "docs": "https://x402.professorsausages.com/news",
      "sample": "https://x402.professorsausages.com/news/sample",
      "example": "https://x402.professorsausages.com/news/headlines",
      "openapi": "https://x402.professorsausages.com/news/openapi.json"
    },
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "lang": "ISO-639-1 language code.",
            "limit": "How many articles to return.",
            "source": "Restrict to one ingestion source. gnews is retired (archived articles only).",
            "category": "Restrict to one topical category."
          }
        },
        "output": {
          "type": "object",
          "required": [
            "updated_at",
            "window_hours",
            "count",
            "articles",
            "freshness"
          ],
          "properties": {
            "count": {
              "type": "integer"
            },
            "articles": {
              "type": "array",
              "items": {
                "type": "object",
                "required": [
                  "id",
                  "title",
                  "url",
                  "domain",
                  "source",
                  "feed",
                  "published",
                  "categories",
                  "seen_at"
                ],
                "properties": {
                  "id": {
                    "type": "string",
                    "description": "sha1(normalized url) hex, first 16 chars — the dedupe key."
                  },
                  "url": {
                    "type": "string"
                  },
                  "feed": {
                    "type": "string",
                    "description": "Human feed label, e.g. \"BBC World\", \"Hacker News\", \"GDELT: technology\"."
                  },
                  "lang": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "ISO-639-1 language, best-effort."
                  },
                  "tier": {
                    "enum": [
                      "official",
                      "major",
                      "trade",
                      "social",
                      "enrichment",
                      null
                    ],
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "Reputability tier of the feed: official (Fed/SEC/White House/BLS/ECB press), major (wires + major outlets), trade (quality trade press), social (Hacker News), enrichment (GDELT-discovered, reputation-gated). Absent on records archived before the tiered portfolio."
                  },
                  "tone": {
                    "type": [
                      "number",
                      "null"
                    ],
                    "description": "GDELT document tone (negative = adverse), attached by URL match from GDELT's 15-minute files — present on any source GDELT also saw; null otherwise."
                  },
                  "title": {
                    "type": "string"
                  },
                  "domain": {
                    "type": "string"
                  },
                  "source": {
                    "enum": [
                      "gdelt",
                      "hn",
                      "rss",
                      "gnews",
                      "sitemap"
                    ],
                    "type": "string"
                  },
                  "cluster": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "Story-cluster id — articles sharing one are the SAME story from different outlets. The served window already keeps only one article per cluster, so this is provenance, not a filter you must apply. null when the headline was too short to cluster safely."
                  },
                  "country": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "seen_at": {
                    "type": "string"
                  },
                  "snippet": {
                    "type": [
                      "string",
                      "null"
                    ],
                    "description": "Short plain-text description from the feed (≤240 chars); absent when the feed carries none."
                  },
                  "published": {
                    "type": "string",
                    "description": "ISO-8601 publish time (best-effort)."
                  },
                  "categories": {
                    "type": "array",
                    "items": {
                      "type": "string"
                    }
                  }
                }
              }
            },
            "freshness": {
              "type": "object",
              "required": [
                "as_of",
                "window_hours",
                "source_count",
                "coverage"
              ],
              "properties": {
                "as_of": {
                  "type": "string",
                  "description": "updated_at of the corpus this response was served from."
                },
                "coverage": {
                  "type": "object",
                  "required": [
                    "oldest_published",
                    "newest_published",
                    "hours",
                    "articles"
                  ],
                  "properties": {
                    "hours": {
                      "type": "number",
                      "description": "newest − oldest in hours — the searchable depth, usually far below window_hours."
                    },
                    "articles": {
                      "type": "integer",
                      "description": "Articles covering that span."
                    },
                    "newest_published": {
                      "type": [
                        "string",
                        "null"
                      ],
                      "description": "Newest publish time held."
                    },
                    "oldest_published": {
                      "type": [
                        "string",
                        "null"
                      ],
                      "description": "Oldest publish time held; the real floor of any date filter."
                    }
                  }
                },
                "source_count": {
                  "type": "integer",
                  "description": "Number of sources with ≥1 article in the current pile."
                },
                "window_hours": {
                  "type": "integer",
                  "description": "Retention POLICY in hours (72). NOT the searchable depth — see coverage.hours."
                }
              }
            },
            "updated_at": {
              "type": "string"
            },
            "window_hours": {
              "type": "integer"
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object"
          },
          "output": {
            "type": "object"
          }
        }
      },
      "category": "news",
      "routeTemplate": "https://x402.professorsausages.com/news/headlines"
    },
    "sample": {
      "url": "https://x402.professorsausages.com/news/sample",
      "hint": "A real cached response from this API (with its capture timestamp), free — judge the data quality before paying."
    },
    "catalog": {
      "message": "34 more agent-ready APIs you can call the same way (x402 pay-per-call). Full free catalog at the catalog URL; each serves a FREE real sample record (freeSample link) — taste before you pay. A few you might want:",
      "services": [
        {
          "call": "/token-safety?ref=xsell&v=menu&from=news",
          "name": "Token Safety Check",
          "summary": "On-chain token risk screening for agents",
          "freeSample": "/token-safety/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/address-screen?ref=xsell&v=menu&from=news",
          "name": "Address Risk Screen",
          "summary": "Crypto address risk screening for agents",
          "freeSample": "/address-screen/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/sanctions-screen?ref=xsell&v=menu&from=news",
          "name": "OFAC Sanctions Name Screen",
          "summary": "Fuzzy OFAC name screening for agents with compliance duties",
          "freeSample": "/sanctions-screen/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/email-check?ref=xsell&v=menu&from=news",
          "name": "Email Deliverability Check",
          "summary": "Part of the Trust & Verification suite — verify anything, pay-per-check",
          "freeSample": "/email-check/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/domain-intel?ref=xsell&v=menu&from=news",
          "name": "Domain Intel (RDAP + DNS)",
          "summary": "Domain registration truth + DNS posture for agents, pay-per-check — part of the Trust & Verification suite…",
          "freeSample": "/domain-intel/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/url-screen?ref=xsell&v=menu&from=news",
          "name": "Malicious URL Screen",
          "summary": "Phishing & malicious-URL screening for agents — hand over any http(s) URL and get a structured risk verdict…",
          "freeSample": "/url-screen/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/phone-check?ref=xsell&v=menu&from=news",
          "name": "Phone Number Validation",
          "summary": "Phone-number validation for agents — is this number real, what region and line type, and its canonical E.16…",
          "freeSample": "/phone-check/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/swap-quote?ref=xsell&v=menu&from=news",
          "name": "DEX Swap Quote",
          "summary": "Read-only on-chain swap pricing for agents",
          "freeSample": "/swap-quote/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/gas-oracle?ref=xsell&v=menu&from=news",
          "name": "Multichain Gas Oracle",
          "summary": "Live multi-chain gas oracle for on-chain agents",
          "freeSample": "/gas-oracle/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/prices?ref=xsell&v=menu&from=news",
          "name": "Crypto Prices (Chainlink)",
          "summary": "Decentralized crypto spot prices + oracle price history for on-chain agents, read DIRECTLY from Chainlink p…",
          "freeSample": "/prices/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/ens-resolve?ref=xsell&v=menu&from=news",
          "name": "ENS Resolver",
          "summary": "Spoof-safe ENS resolution for on-chain agents",
          "freeSample": "/ens-resolve/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/chain-registry?ref=xsell&v=menu&from=news",
          "name": "EVM Chain Registry",
          "summary": "Canonical EVM chain metadata for agents touching an unfamiliar chainId — cleaned, probed, and indexed from…",
          "freeSample": "/chain-registry/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/company?ref=xsell&v=menu&from=news",
          "name": "Company Enrichment (SEC EDGAR)",
          "summary": "Company enrichment for agents — hand over a ticker, CIK, or name and get ground-truth SEC identity plus fin…",
          "freeSample": "/company/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/sec-10k?ref=xsell&v=menu&from=news",
          "name": "SEC Annual Report (10-K)",
          "summary": "U.S",
          "freeSample": "/sec-10k/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/sec-10q?ref=xsell&v=menu&from=news",
          "name": "SEC Quarterly Report (10-Q)",
          "summary": "U.S",
          "freeSample": "/sec-10q/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/sec-8k?ref=xsell&v=menu&from=news",
          "name": "SEC Current Report (8-K)",
          "summary": "U.S",
          "freeSample": "/sec-8k/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/insider-trades?ref=xsell&v=menu&from=news",
          "name": "Insider Trades",
          "summary": "SEC Form 4 insider transactions made agent-ready — who's buying and selling their own company's stock, norm…",
          "freeSample": "/insider-trades/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/13f-holdings?ref=xsell&v=menu&from=news",
          "name": "13F Institutional Holdings",
          "summary": "What every institutional manager actually holds, made agent-ready — normalized SEC 13F-HR portfolios for ~8…",
          "freeSample": "/13f-holdings/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/macro?ref=xsell&v=menu&from=news",
          "name": "US Macro Indicators",
          "summary": "WIP / FREE (BETA) — currently free while data coverage and freshness are expanded; pricing returns once pro…",
          "freeSample": "/macro/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/roadmap?ref=xsell&v=menu&from=news",
          "name": "Roadmap",
          "summary": "FREE — the published edge of this gateway's coverage",
          "freeSample": "/roadmap/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/patent?ref=xsell&v=menu&from=news",
          "name": "US Patent Search",
          "summary": "WIP / FREE (BETA) — currently free; the corpus is a small curated slice of landmark patents while the full…",
          "freeSample": "/patent/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/ipo-calendar?ref=xsell&v=menu&from=news",
          "name": "IPO Calendar",
          "summary": "The US IPO pipeline straight from SEC EDGAR — public domain, no paid feed",
          "freeSample": "/ipo-calendar/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/fx-rates?ref=xsell&v=menu&from=news",
          "name": "FX Reference Rates",
          "summary": "Daily reference FX rates for commerce and accounting agents",
          "freeSample": "/fx-rates/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/holidays?ref=xsell&v=menu&from=news",
          "name": "Market Holiday Calendar",
          "summary": "Deterministic market & bank holiday calendar for finance agents",
          "freeSample": "/holidays/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/iban?ref=xsell&v=menu&from=news",
          "name": "IBAN Validator & Decoder",
          "summary": "IBAN validation & decoding for payment agents",
          "freeSample": "/iban/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/timezone?ref=xsell&v=menu&from=news",
          "name": "Timezone & DST Toolkit",
          "summary": "DST-correct timezone math for scheduling agents",
          "freeSample": "/timezone/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/weather?ref=xsell&v=menu&from=news",
          "name": "Weather & Forecast",
          "summary": "Weather for agents — the canonical tool call, pay-per-use",
          "freeSample": "/weather/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/reader?ref=xsell&v=menu&from=news",
          "name": "Web Reader & Screenshot",
          "summary": "Give your agent a real browser",
          "freeSample": "/reader/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/convert?ref=xsell&v=menu&from=news",
          "name": "Document Convert (PDF/Image → Text)",
          "summary": "Document conversion tools for agents — hand over any PDF or image (public URL, base64, or raw POSTed bytes,…",
          "freeSample": "/convert/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/nft?ref=xsell&v=menu&from=news",
          "name": "NFT Insight (Scam Check, Owners)",
          "summary": "NFT collection intelligence for agents — Ethereum now, Base next",
          "freeSample": "/nft/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/sfx?ref=xsell&v=menu&from=news",
          "name": "8-bit SFX Generator",
          "summary": "Deterministic 8-bit sound-effect synthesis for agents — game-ready WAVs from a seed or preset in one paid c…",
          "freeSample": "/sfx/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/icons?ref=xsell&v=menu&from=news",
          "name": "Icon Search",
          "summary": "Inline SVG icons for agents building UIs without CDN access — CSP blocks icon CDNs and hand-drawn path data…",
          "freeSample": "/icons/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/pokemon?ref=xsell&v=menu&from=news",
          "name": "Pokemon API",
          "summary": "Pokemon knowledge base for agents",
          "freeSample": "/pokemon/sample?ref=xsell&v=menu&from=news"
        },
        {
          "call": "/minecraft?ref=xsell&v=menu&from=news",
          "name": "Minecraft Data",
          "summary": "Minecraft game data for agents — look up any block or item by name with properties, ids and metadata, list…",
          "freeSample": "/minecraft/sample?ref=xsell&v=menu&from=news"
        }
      ],
      "strategy": "menu",
      "catalogUrl": "https://x402.professorsausages.com/?ref=402&v=menu&from=news"
    },
    "suggest": {
      "url": "https://x402.professorsausages.com/suggest",
      "hint": "Missing data you'd pay for? POST {want, would_pay_usd} — free. The most-requested datasets get built first."
    },
    "discount": {
      "off": "50%",
      "hint": "Send X-Intent: <40+ chars describing what you're building and what data you need> for 50% off this call.",
      "header": "X-Intent"
    }
  },
  "x402Version": 2
}

Accepts

The payment requirements as published to the catalog. Read the live 402 before paying — a price here is a claim, not a quote.

[
  {
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "extra": {
      "name": "USD Coin",
      "version": "2"
    },
    "payTo": "0x54ebFCF3870439B9db62381848c5DabC05c70d5B",
    "amount": "20000",
    "scheme": "exact",
    "network": "eip155:8453",
    "maxTimeoutSeconds": 60
  }
]

Extensions

{
  "help": {
    "docs": "https://x402.professorsausages.com/news",
    "sample": "https://x402.professorsausages.com/news/sample",
    "example": "https://x402.professorsausages.com/news/headlines",
    "openapi": "https://x402.professorsausages.com/news/openapi.json"
  },
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "lang": "ISO-639-1 language code.",
          "limit": "How many articles to return.",
          "since": "Only articles ingested (seen_at) after this point: an ISO date-time, or the next_cursor from your previous answer.",
          "source": "Restrict to one ingestion source. `push:<channel>` is a relayed pointer — the record is the linked publisher's article and `via` names the account that relayed it. gnews is retired (archived articles only).",
          "category": "Restrict to one topical category."
        }
      },
      "output": {
        "type": "object",
        "required": [
          "updated_at",
          "window_hours",
          "total",
          "count",
          "articles",
          "freshness",
          "new_count",
          "next_cursor",
          "polled_at",
          "poll"
        ],
        "properties": {
          "poll": {
            "type": "object",
            "required": [
              "next_cursor",
              "suggested_interval_seconds",
              "updated_at"
            ],
            "properties": {
              "note": {
                "type": "string"
              },
              "updated_at": {
                "type": "string"
              },
              "next_cursor": {
                "type": [
                  "string",
                  "null"
                ]
              },
              "suggested_interval_seconds": {
                "type": "integer"
              }
            }
          },
          "count": {
            "type": "integer"
          },
          "since": {
            "type": [
              "string",
              "null"
            ]
          },
          "total": {
            "type": "integer"
          },
          "articles": {
            "type": "array",
            "items": {
              "type": "object",
              "required": [
                "id",
                "title",
                "url",
                "domain",
                "source",
                "feed",
                "published",
                "categories",
                "seen_at"
              ],
              "properties": {
                "id": {
                  "type": "string"
                },
                "url": {
                  "type": "string"
                },
                "via": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "also": {
                  "type": "array",
                  "items": {
                    "type": "object",
                    "required": [
                      "domain",
                      "url"
                    ],
                    "properties": {
                      "url": {
                        "type": "string"
                      },
                      "domain": {
                        "type": "string"
                      }
                    }
                  },
                  "maxItems": 3
                },
                "feed": {
                  "type": "string"
                },
                "lang": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "tier": {
                  "enum": [
                    "official",
                    "major",
                    "trade",
                    "social",
                    "enrichment",
                    null
                  ],
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "tone": {
                  "type": [
                    "number",
                    "null"
                  ]
                },
                "image": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "author": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "domain": {
                  "type": "string"
                },
                "source": {
                  "enum": [
                    "gdelt",
                    "hn",
                    "rss",
                    "gnews",
                    "sitemap"
                  ],
                  "type": "string"
                },
                "cluster": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "country": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "seen_at": {
                  "type": "string"
                },
                "snippet": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "summary": {
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "published": {
                  "type": "string"
                },
                "categories": {
                  "type": "array",
                  "items": {
                    "type": "string"
                  }
                },
                "cluster_id": {
                  "type": "string"
                },
                "word_count": {
                  "type": [
                    "integer",
                    "null"
                  ]
                },
                "tone_method": {
                  "enum": [
                    "gdelt",
                    "lexicon",
                    null
                  ],
                  "type": [
                    "string",
                    "null"
                  ]
                },
                "cluster_size": {
                  "type": "integer",
                  "minimum": 1
                },
                "tone_confidence": {
                  "enum": [
                    "high",
                    "medium",
                    "low",
                    null
                  ],
                  "type": [
                    "string",
                    "null"
                  ]
                }
              }
            }
          },
          "freshness": {
            "type": "object",
            "required": [
              "as_of",
              "window_hours",
              "source_count",
              "coverage"
            ],
            "properties": {
              "as_of": {
                "type": "string"
              },
              "coverage": {
                "type": "object",
                "required": [
                  "oldest_published",
                  "newest_published",
                  "hours",
                  "articles"
                ],
                "properties": {
                  "why": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "thin": {
                    "type": "boolean"
                  },
                  "hours": {
                    "type": "number"
                  },
                  "articles": {
                    "type": "integer"
                  },
                  "newest_published": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "oldest_published": {
                    "type": [
                      "string",
                      "null"
                    ]
                  }
                }
              },
              "source_count": {
                "type": "integer"
              },
              "window_hours": {
                "type": "integer"
              }
            }
          },
          "new_count": {
            "type": "integer"
          },
          "polled_at": {
            "type": "string"
          },
          "updated_at": {
            "type": "string"
          },
          "next_cursor": {
            "type": [
              "string",
              "null"
            ]
          },
          "window_hours": {
            "type": "integer"
          }
        }
      }
    },
    "schema": {
      "type": "object",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object"
        },
        "output": {
          "type": "object"
        }
      }
    },
    "category": "news",
    "routeTemplate": "https://x402.professorsausages.com/news/headlines"
  }
}

Provenance

Seen in the source catalog

2026-09-22 06:17Z

Last indexed by Roundhouse

2026-09-24 17:40Z

Last enriched (probe, favicon, geo)

2026-09-10 11:45Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 402