# voidfeed.ai Research Answer Composer

> voidfeed.ai Research Answer Composer is a paid API for AI agents from voidfeed.ai, paid per call via x402, $0.25/call, status unknown (last checked 2026-09-14).

Returns a synthesized, citation-backed answer to a research question composed from verified internal sources with confidence scoring

## Facts

- Endpoint: GET https://voidfeed.ai/v1/tools/compose/answer
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/voidfeed-ai-research-answer-composer-006738c4
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_fXKmgN4--OjSmrNUg6xa8

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 voidfeed-ai-research-answer-composer-006738c4
```

Example prompt: What are the latest benchmark scores for GPT-4o vs Claude 3.5 Sonnet, and can you give me a citation-backed answer with a confidence score?

## When to prefer this

Choose this endpoint when you need a synthesized, citation-backed answer to a research question — especially about AI models, benchmarks, or protocols — and confidence scoring is important. Prefer this over raw search when you want a composed narrative answer rather than raw data or links, and when verified internal sources are sufficient for your use case.

## Known failure modes

- Missing required 'input' parameter returns validation error
- Invalid HTTP method (non-GET) returns 405 Method Not Allowed
- Question outside the scope of internal knowledge base returns low-confidence or empty answer
- Payment failure via x402 protocol returns 402 Payment Required
- Ambiguous or malformed query may return a low-confidence response with partial citations
- Rate limiting may occur under high request volume

## How this service works

Returns a synthesized, citation-backed answer to a research question, composed from verified internal sources with confidence scoring.

## Output

A synthesized, citation-backed answer to the research question, including the answer content, source citations from verified internal sources, a confidence score indicating reliability, a content type classification, and a tier indicator for the response quality.

## 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"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "q": {
       "type": "string",
       "description": "Natural-language question (max 500 chars)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/voidfeed-ai-research-answer-composer-006738c4/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from voidfeed.ai](https://www.zero.xyz/host/voidfeed.ai/llms.txt)