# polynews.news Morning Briefing

> polynews.news Morning Briefing is a paid API for AI agents from polynews.news, paid per call via x402, $0.08/call, status unknown (last checked 2026-09-13).

Delivers a Grok-powered daily market briefing with headlines, key developments, and sentiment analysis across a user-defined watchlist of prediction markets

## Facts

- Endpoint: POST https://polynews.news/api/v1/morning-briefing
- Price: $0.08/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/polynews-news-8373164f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bskBgYK3773HVThOx_Fb6

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability polynews-news-8373164f -d '<json body>'
```

Example prompt: Give me my morning briefing for my watchlist — include the top headline, key developments, and sentiment analysis across these markets: Bitcoin price above $100k, US 2026 midterms, and Fed rate cut by Q3.

## When to prefer this

Choose this endpoint when you need a consolidated, AI-synthesized morning briefing across multiple prediction markets at once rather than per-market lookups. Ideal for users who maintain a watchlist and want a single daily digest with sentiment signals, saving multiple individual API calls.

## Known failure modes

- Empty or invalid watchlist returns 400 error
- Market IDs not recognized return partial results or 404
- Grok API unavailability causes 503 or degraded response
- Payment failure via x402 results in 402 Payment Required
- Stale data if called outside market hours may reduce relevance

## How this service works

Grok-powered daily briefing across a set of markets you supply (no account or watchlist needed): headline, key developments, and sentiment

## Output

A structured daily briefing containing a top headline, a list of key developments, and sentiment analysis (positive/negative/neutral with signals) for each market in the submitted watchlist, powered by Grok's analysis of news and X posts.

## Example request

```json
{
 "input": {
  "body": {
   "markets": [
    "bitcoin-price-above-100k",
    "us-2026-midterms",
    "fed-rate-cut-q3"
   ],
   "includeHeadline": true,
   "includeSentiment": true,
   "includeKeyDevelopments": true
  },
  "type": "http",
  "method": "POST",
  "bodyType": "json"
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "data": {
       "type": "object",
       "properties": {
        "summary": {
         "type": "string"
        },
        "headline": {
         "type": "string"
        },
        "sentiment": {
         "type": "string",
         "description": "bullish | bearish | neutral | mixed"
        },
        "keyDevelopments": {
         "type": "array",
         "items": {
          "type": "object",
          "properties": {
           "title": {
            "type": "string"
           },
           "content": {
            "type": "string"
           },
           "sources": {
            "type": "array",
            "items": {
             "type": "object",
             "properties": {
              "url": {
               "type": "string"
              },
              "title": {
               "type": "string"
              },
              "source": {
               "type": "string"
              }
             }
            }
           },
           "sentiment": {
            "type": "string",
            "description": "positive | negative | neutral"
           },
           "relatedMarketIds": {
            "type": "array",
            "items": {
             "type": "string"
            }
           }
          }
         }
        }
       }
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "briefing": "Democratic Presidential Nominee 2028 saw Newsom climb from 67% to 72% on a Reuters report about an advisor joining his exploratory committee. Bitcoin $200K by year-end odds fell from 41% to 32% after spot fell below $98K overnight. Overall market sentiment skewed risk-off ahead of FOMC.",
   "headline": "Newsom widens 2028 lead; Bitcoin $200K odds fade on weekend volatility",
   "sentiment": "mixed",
   "marketUpdates": [
    {
     "change": "+5pts to 72%",
     "driver": "Reuters advisor report",
     "marketId": "69317",
     "question": "Democratic Presidential Nominee 2028"
    }
   ]
  },
  "meta": {
   "tier": "premium",
   "version": "v1",
   "endpoint": "/api/v1/morning-briefing",
   "latencyMs": 24300,
   "timestamp": "2026-05-12T04:30:00.000Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/polynews-news-8373164f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from polynews.news](https://www.zero.xyz/host/polynews.news/llms.txt)