Index onlineMerchant portal
Api Endpoint

Answer Engine with Citations

Answer with sources: ask a question, get a short answer with numbered citations [1], [2] and the source list. Searches Wikipedia and our own news index (GDELT and Hacker News, last 7 days), reads the top 3 pages and answers only from them with Claude Haiku 5.5; when the sources do not answer the question it says so. source auto (current events go to news first), news or web (Wikipedia); optional answer language.

Open interactive test console

Offering

Provider
agentsvc.io
Method
POST
Offering type
Api Endpoint
Transport type
http
Category
Web Search Research
Delivery
Not provided
Pricing model
Not provided
x402 version
2

Endpoint context

URL
https://agentsvc.io/api/v1/proxy/answer-with-sources
MIME type
application/json
First seen
2026-10-16T01:50:45.949Z
Last seen
Tags
answer with sources, question answering, citations, Research, RAG

Website

Payment pricing

x402 payment terms are the authoritative price for calling this endpoint.

Payment option 1
0.008 USDC
Atomic price: 8000 · Network: eip155:8453 · Asset: USDC · Scheme: exact
Payment option 2
0.008 USDC
Atomic price: 8000 · Network: solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp · Asset: USDC · Scheme: exact
Payment option 3
0.008 USDC
Atomic price: 8000 · Network: eip155:137 · Asset: USDC · Scheme: exact
Payment option 4
0.008 USDC
Atomic price: 8000 · Network: eip155:42161 · Asset: USDC · Scheme: exact
Raw x402 terms
[
  {
    "scheme": "exact",
    "network": "eip155:8453",
    "asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
    "amount": "8000",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
  },
  {
    "scheme": "exact",
    "network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
    "asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
    "amount": "8000",
    "payTo": "5JzPS5qpEwUM1vTC9GG7uqvwJdHzbEwfoPHf2Ki977tg"
  },
  {
    "scheme": "exact",
    "network": "eip155:137",
    "asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
    "amount": "8000",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
  },
  {
    "scheme": "exact",
    "network": "eip155:42161",
    "asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
    "amount": "8000",
    "payTo": "0x622efA6Ceb83a5b6EdBC931332f4db68B7f74F27"
  }
]

Observed health

Status
Healthy
Latest latency
309 ms
Average latency
963 ms
HTTP status
204
Last checked
Reachability
100% over 12 checks

Latency is measured to the first response headers. A reachable result does not verify response accuracy or merchant identity.

Input schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string",
      "const": "http"
    },
    "method": {
      "type": "string",
      "enum": [
        "POST",
        "PUT",
        "PATCH"
      ]
    },
    "bodyType": {
      "type": "string",
      "enum": [
        "json",
        "form-data",
        "text"
      ]
    },
    "body": {
      "properties": {
        "question": {
          "type": "string",
          "description": "The question, max 3000 chars; may include context, the search uses the last question in it"
        },
        "query": {
          "type": "string",
          "description": "Optional search words (max 300 chars) when the question is long"
        },
        "source": {
          "type": "string",
          "enum": [
            "auto",
            "news",
            "web"
          ],
          "default": "auto"
        },
        "language": {
          "type": "string",
          "description": "Answer language, e.g. German; default English"
        }
      },
      "required": [
        "question"
      ]
    }
  },
  "required": [
    "type",
    "method",
    "bodyType",
    "body"
  ],
  "additionalProperties": false
}

Output schema

{
  "type": "object",
  "properties": {
    "type": {
      "type": "string"
    },
    "example": {
      "type": "object",
      "required": [
        "success",
        "data"
      ],
      "properties": {
        "success": {
          "type": "boolean"
        },
        "data": {
          "type": "object",
          "properties": {
            "question": {
              "type": "string"
            },
            "answer": {
              "type": "string"
            },
            "sources": {
              "type": "array",
              "items": {
                "type": "object",
                "properties": {
                  "n": {
                    "type": "integer"
                  },
                  "title": {
                    "type": "string"
                  },
                  "url": {
                    "type": "string"
                  }
                }
              }
            },
            "searched": {
              "type": "array",
              "items": {
                "type": "string"
              }
            },
            "model": {
              "type": "string"
            },
            "answered_at": {
              "type": "string"
            },
            "note": {
              "type": "string"
            }
          },
          "required": [
            "question",
            "answer",
            "sources"
          ]
        }
      }
    }
  },
  "required": [
    "type"
  ]
}