Multi-feed news aggregation

Endpoint

https://apiacre.com/v1/research/news-aggregate

Send the JSON body below. An unpaid request returns HTTP 402 with a PAYMENT-REQUIRED header; an x402-compatible buyer signs the requirement and retries with PAYMENT-SIGNATURE.

Official Coinbase agent path

Coinbase Agentic Wallet can satisfy this x402 request in one command. Running it may pay automatically, so --max-amount is fixed to $0.05 USDC in atomic units. Copying the command does not install, authenticate, sign, or pay; review the request and use a separate low-value wallet before running it.

npx --yes awal@latest x402 pay https://apiacre.com/v1/research/news-aggregate \
  -X POST \
  -d '{"feeds":["https://hnrss.org/frontpage","https://www.nasa.gov/feed/"],"limit":25,"per_feed_limit":20,"keywords":[],"deduplicate_by":"url_or_title"}' \
  --max-amount 50000 \
  --json

Coinbase pay-for-service documentation · Buyer setup and wallet safety

npx --yes agentcash@latest check https://apiacre.com/v1/research/news-aggregate
npx --yes agentcash@latest fetch https://apiacre.com/v1/research/news-aggregate \
  --method POST \
  --header 'content-type: application/json' \
  --body '{"feeds":["https://hnrss.org/frontpage","https://www.nasa.gov/feed/"],"limit":25,"per_feed_limit":20,"keywords":[],"deduplicate_by":"url_or_title"}' \
  --payment-protocol x402 \
  --payment-network base \
  --max-amount 0.050

Input example

{
  "feeds": [
    "https://hnrss.org/frontpage",
    "https://www.nasa.gov/feed/"
  ],
  "limit": 25,
  "per_feed_limit": 20,
  "keywords": [],
  "deduplicate_by": "url_or_title"
}

Response shape

View free static sample JSON

{
  "request_id": "018f1f54-7f38-7ba2-8dc3-5f90272d9f1a",
  "service": "research.news-aggregate",
  "version": "1",
  "data": {
    "feedCount": 2,
    "successfulFeedCount": 2,
    "failedFeedCount": 0,
    "feeds": [
      {
        "requestedUrl": "https://hnrss.org/frontpage",
        "url": "https://hnrss.org/frontpage",
        "status": "ok",
        "error": null,
        "httpStatus": 200,
        "elapsedMs": 118,
        "title": "Hacker News: Front Page",
        "entryCount": 20
      },
      {
        "requestedUrl": "https://www.nasa.gov/feed/",
        "url": "https://www.nasa.gov/feed/",
        "status": "ok",
        "error": null,
        "httpStatus": 200,
        "elapsedMs": 164,
        "title": "NASA",
        "entryCount": 20
      }
    ],
    "entryCount": 25,
    "duplicatesRemoved": 1,
    "filteredOut": 0,
    "entries": [
      {
        "sourceUrl": "https://www.nasa.gov/feed/",
        "sourceTitle": "NASA",
        "title": "A structured public-news example",
        "url": "https://www.nasa.gov/example/",
        "published": "Sun, 09 Aug 2026 18:00:00 +0000",
        "publishedAt": "2026-08-09T18:00:00+00:00",
        "summary": "A normalized entry merged from one of the requested feeds.",
        "id": "https://www.nasa.gov/example/"
      }
    ],
    "retrievedAt": "2026-08-10T00:00:00+00:00"
  },
  "meta": {
    "duration_ms": 42,
    "cached": false,
    "sources": [],
    "warnings": [],
    "next_actions": [
      {
        "service": "data.schema",
        "title": "JSON Schema generator",
        "reason": "Infer a reusable validation contract for the normalized news entries.",
        "method": "POST",
        "path": "/v1/data/schema",
        "price": "$0.025",
        "input_template": {
          "content": "$json($result.data.entries)",
          "format": "json"
        },
        "use_output": "Use result.data.schema to validate future aggregation snapshots.",
        "handoff_path": "/catalog/data.schema",
        "checkout_path": "/try/data.schema",
        "sample_path": "/samples/data.schema",
        "maximum_atomic_usdc": "25000",
        "handoff_payment_required": false,
        "executes_automatically": false,
        "authorization_required": true
      }
    ]
  }
}

Complete recipes using this API

These buyer-controlled recipes connect this service to compatible API Acre results. Every step has its own exact price and requires separate authorization.

Continue this workflow

These optional follow-ups use this result in a larger workflow. Each call shows a fresh x402 challenge and requires separate buyer authorization.

Try the payment challenge

curl -i -X POST 'https://apiacre.com/v1/research/news-aggregate' \
  -H 'content-type: application/json' \
  --data '{"feeds":["https://hnrss.org/frontpage","https://www.nasa.gov/feed/"],"limit":25,"per_feed_limit":20,"keywords":[],"deduplicate_by":"url_or_title"}'