# ScopeAPI Web Answer with Sources

> ScopeAPI Web Answer with Sources is a paid API for AI agents from scopeapi.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Answers a natural language query with a sourced, web-grounded response including citations

## Facts

- Endpoint: POST https://scopeapi.dev/answer
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/scopeapi-web-answer-with-sources-05ffc264
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_34MP7c7gzwL3SPmx9mY7i

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 scopeapi-web-answer-with-sources-05ffc264 -d '<json body>'
```

Example prompt: Can you find me a sourced answer to 'What are the main causes of inflation in 2024?' and give me the links to where you got the information?

## When to prefer this

Choose this endpoint when you need a direct, sourced answer to a specific natural language question and citations matter — ideal for fact-checking, research, or any task where answer provenance is important. Prefer over pure search endpoints when you want a synthesized answer rather than raw links, and over general LLM generation when you need grounding in real web sources.

## Known failure modes

- Missing or empty 'query' field returns validation error
- Query too vague or ambiguous may return low-quality or empty answer
- No web sources found for obscure query returns empty sources array
- Rate limiting or payment failure returns 402 or error status
- Network timeout if query requires deep web retrieval

## How this service works

Web Answer with Sources

## Output

Returns a JSON object with an 'answer' field containing a sourced text response, a 'status' field ('ok' on success), and a 'sources' array listing URLs or references used to generate the answer.

## 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": {
     "required": [
      "query"
     ],
     "properties": {
      "query": {
       "type": "string"
      }
     }
    },
    "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"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "answer": "Source-backed research result",
  "status": "ok",
  "sources": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/scopeapi-web-answer-with-sources-05ffc264/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from scopeapi.dev](https://www.zero.xyz/host/scopeapi.dev/llms.txt)