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": "5000",
      "scheme": "exact",
      "network": "eip155:8453",
      "maxTimeoutSeconds": 60
    }
  ],
  "resource": {
    "url": "https://x402.professorsausages.com/news/search",
    "tags": [
      "news",
      "headlines",
      "search",
      "sentiment",
      "gdelt"
    ],
    "mimeType": "application/json",
    "description": "Keyword search over the last 72h of ingested headlines — AND-ed terms plus quoted phrases, source/lang/date filters, recency or relevance sort",
    "serviceName": "Multi-Source News"
  },
  "extensions": {
    "bazaar": {
      "info": {
        "input": {
          "type": "http",
          "method": "GET",
          "queryParams": {
            "q": "Query, ≤120 chars. Terms AND-ed; \"quoted phrase\" for exact.",
            "to": "ISO date/time upper bound on published.",
            "from": "ISO date/time lower bound on published.",
            "lang": "ISO-639-1 language code.",
            "sort": "recency (default) | relevance.",
            "limit": "1–50, default 20.",
            "source": "gdelt | hn | rss | gnews."
          }
        },
        "output": {
          "type": "object",
          "required": [
            "query",
            "count",
            "articles",
            "freshness",
            "note"
          ],
          "properties": {
            "note": {
              "type": "string"
            },
            "count": {
              "type": "integer"
            },
            "query": {
              "type": "object"
            },
            "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."
                  },
                  "tone": {
                    "type": [
                      "number",
                      "null"
                    ],
                    "description": "GDELT article tone; null for every non-GDELT source."
                  },
                  "title": {
                    "type": "string"
                  },
                  "domain": {
                    "type": "string"
                  },
                  "source": {
                    "enum": [
                      "gdelt",
                      "hn",
                      "rss",
                      "gnews"
                    ],
                    "type": "string"
                  },
                  "country": {
                    "type": [
                      "string",
                      "null"
                    ]
                  },
                  "seen_at": {
                    "type": "string"
                  },
                  "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"
              ],
              "properties": {
                "as_of": {
                  "type": "string",
                  "description": "updated_at of the corpus this response was served from."
                },
                "source_count": {
                  "type": "integer",
                  "description": "Number of sources with ≥1 article in the current pile."
                },
                "window_hours": {
                  "type": "integer"
                }
              }
            }
          }
        }
      },
      "schema": {
        "type": "object",
        "required": [
          "input"
        ],
        "properties": {
          "input": {
            "type": "object"
          },
          "output": {
            "type": "object"
          }
        }
      },
      "category": "news",
      "routeTemplate": "https://x402.professorsausages.com/news/search"
    },
    "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": "You called Multi-Source News. Agents doing news work commonly also use these — same pay-per-call model, each with a FREE real sample record (freeSample link):",
      "related": [
        {
          "call": "/token-safety?ref=xsell&v=related&from=news",
          "name": "Token Safety Check",
          "summary": "On-chain token risk screening for agents",
          "freeSample": "/token-safety/sample?ref=xsell&v=related&from=news"
        },
        {
          "call": "/address-screen?ref=xsell&v=related&from=news",
          "name": "Address Risk Screen",
          "summary": "Crypto address risk screening for agents",
          "freeSample": "/address-screen/sample?ref=xsell&v=related&from=news"
        },
        {
          "call": "/sanctions-screen?ref=xsell&v=related&from=news",
          "name": "OFAC Sanctions Name Screen",
          "summary": "Fuzzy OFAC name screening for agents with compliance duties",
          "freeSample": "/sanctions-screen/sample?ref=xsell&v=related&from=news"
        }
      ],
      "strategy": "related",
      "catalogUrl": "https://x402.professorsausages.com/?ref=402&v=related&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": "30000",
    "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/search",
    "openapi": "https://x402.professorsausages.com/news/openapi.json"
  },
  "bazaar": {
    "info": {
      "input": {
        "type": "http",
        "method": "GET",
        "queryParams": {
          "q": "Search terms. Space-separated terms are AND-ed; wrap a phrase in double quotes for an exact substring.",
          "to": "Upper bound on publish time.",
          "from": "Lower bound on publish time.",
          "lang": "ISO-639-1 language code.",
          "sort": "Result ordering: newest first, or by term-frequency in the title.",
          "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)."
        }
      }
    },
    "schema": {
      "type": "object",
      "required": [
        "input"
      ],
      "properties": {
        "input": {
          "type": "object"
        }
      }
    },
    "category": "news",
    "routeTemplate": "https://x402.professorsausages.com/news/search"
  }
}

Provenance

Seen in the source catalog

2026-09-22 06:17Z

Last indexed by Roundhouse

2026-09-24 11:00Z

Last enriched (probe, favicon, geo)

2026-09-10 11:45Z

x402 version

2

Max timeout

60s

Liveness probe

HTTP 400