Monitoring · x402 · early usage

News sentiment for a company, token, person or topic: finds up to 25 recent articles in…

by agentsvc.io · discovered, not yet claimed by its owner · updated 2026-10-11

30d calls3

30d payers2

MethodPOST

Outputjson

Mirrored from Coinbase's public x402 Bazaar. The description is the provider's own text and has not been reviewed here; the payment requirements are copied as published.

What it does

News sentiment for a company, token, person or topic: finds up to 25 recent articles in our own news index (GDELT and Hacker News, last 7 days) and rates how the coverage reflects on the topic: overall label (very negative to very positive), a -1 to 1 score, positive, neutral and negative counts, 3 to 5 themes, a two-sentence summary and every article with its own sentiment, title, source, date and URL. For trading signals, brand monitoring and research agents.

Tags: sentiment · news · analysis · ai · monitoring · bazaar · builder-code

Call contract

Method: POST
Input: json
Output: json
Last paid call: 2026-10-11

Input example from Bazaar metadata

{
  "limit": 8,
  "topic": "Bitcoin"
}

Output example

{
  "data": {
    "analysed_at": "2026-10-10T10:12:15.017Z",
    "articles": [
      {
        "published_at": "2026-10-09T21:30:00.000Z",
        "sentiment": "neutral",
        "source": "indiatimes.com",
        "title": "Bitcoin BTC USD price analysis: Bitcoin's four-month higher-low pattern expla...",
        "url": "https://economictimes.indiatimes.com/news/international/us/bitcoins-four-mont..."
      }
    ],
    "counts": {
      "negative": 1,
      "neutral": 5,
      "positive": 2
    },
    "model": "claude-haiku-5-5",
    "overall": "mixed",
    "score": 0.1,
    "summary": "Coverage of Bitcoin is split between price-technical analysis showing uncerta...",
    "themes": [
      "price volatility and technical levels"
    ],
    "topic": "Bitcoin",
    "window": "last 7 days, our news index (GDELT and Hacker News)"
  },
  "success": true
}

Use with an agent

Discover. Agents find this listing with GET https://bazaar.saylorinnovations.com/discovery/search?query=…, the MCP tool search_resources, or /discovery/resources.
Inspect. Fetch /resources/35698.json for the price and payment options.
Pay. Call GET https://agentsvc.io/api/v1/proxy/news-sentiment. The provider answers 402 with its payment requirements. An x402 client signs one of the options below and retries with PAYMENT-SIGNATURE.
Execute. The provider returns 200 with the data. Agent Bazaar is not in the request path and never sees your payment.

For humans

You don't need an account or an API key; you need a wallet holding a small amount of USDC on Base, Solana, Polygon, Arbitrum One, and an x402-capable client (see the examples below). Call the endpoint unpaid first to see exactly what it asks for.

Pricing & payment

Price: $0.006 / request
Protocol: x402 v2
Auth: No account or API key. Pay per request.
Networks: Base, Solana, Polygon, Arbitrum One
Demand: 3 calls · 2 unique payers in 30d (public x402 Bazaar data)

x402 payment requirements

Scheme	Network	Asset	Amount	Pay to	Timeout
exact	Base eip155:8453	USDC	$0.006	0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27	300s
exact	Solana solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp	USDC	$0.006	5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg	300s
exact	Polygon eip155:137	USDC	$0.006	0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27	300s
exact	Arbitrum One eip155:42161	USDC	$0.006	0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27	300s

accepts[] (raw JSON)

[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "6000",
    "amountUsd": 0.006,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "payTo": "5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "6000",
    "amountUsd": 0.006,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "6000",
    "amountUsd": 0.006,
    "maxTimeoutSeconds": 300
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "6000",
    "amountUsd": 0.006,
    "maxTimeoutSeconds": 300
  }
]

Schemas

Output schema (JSON Schema)

{
  "properties": {
    "example": {
      "properties": {
        "data": {
          "properties": {
            "analysed_at": {
              "type": "string"
            },
            "articles": {
              "items": {
                "properties": {
                  "published_at": {
                    "type": "string"
                  },
                  "sentiment": {
                    "type": "string"
                  },
                  "source": {
                    "type": "string"
                  },
                  "title": {
                    "type": "string"
                  },
                  "url": {
                    "type": "string"
                  }
                },
                "type": "object"
              },
              "type": "array"
            },
            "counts": {
              "properties": {
                "negative": {
                  "type": "integer"
                },
                "neutral": {
                  "type": "integer"
                },
                "positive": {
                  "type": "integer"
                }
              },
              "type": "object"
            },
            "model": {
              "type": "string"
            },
            "overall": {
              "type": "string"
            },
            "score": {
              "type": "number"
            },
            "summary": {
              "type": "string"
            },
            "themes": {
              "items": {
                "type": "string"
              },
              "type": "array"
            },
            "topic": {
              "type": "string"
            },
            "window": {
              "type": "string"
            }
          },
          "required": [
            "topic",
            "overall",
            "score",
            "articles"
          ],
          "type": "object"
        },
        "success": {
          "type": "boolean"
        }
      },
      "required": [
        "success",
        "data"
      ],
      "type": "object"
    },
    "type": {
      "type": "string"
    }
  },
  "required": [
    "type"
  ],
  "type": "object"
}

Example shape — generated from the schema, not a captured live response

{
  "example": {
    "data": {
      "analysed_at": "string",
      "articles": [
        {
          "published_at": "string",
          "sentiment": "string",
          "source": "string",
          "title": "string",
          "url": "string"
        }
      ],
      "counts": {
        "negative": 0,
        "neutral": 0,
        "positive": 0
      },
      "model": "string",
      "overall": "string",
      "score": 0,
      "summary": "string",
      "themes": [
        "string"
      ],
      "topic": "string",
      "window": "string"
    },
    "success": true
  },
  "type": "string"
}

Examples

curl

curl "https://agentsvc.io/api/v1/proxy/news-sentiment"
# -> 402 Payment Required, accepts[] lists how to pay
# retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid

JavaScript

const res = await fetch("https://agentsvc.io/api/v1/proxy/news-sentiment");
if (res.status === 402) {
  const { accepts } = await res.json();
  // pay one of accepts[] via an x402 client, then retry with the payment header
}

Python

import httpx
res = httpx.get("https://agentsvc.io/api/v1/proxy/news-sentiment")
if res.status_code == 402:
    accepts = res.json()["accepts"]
    # pay one of accepts[] via an x402 client, then retry with the payment header

Details

Provider: agentsvc.io
Endpoint: https://agentsvc.io/api/v1/proxy/news-sentiment
Machine-readable: /resources/35698.json