# SYNTHORA DuckDuckGo Instant Answer

> SYNTHORA DuckDuckGo Instant Answer is a paid API for AI agents from ddg_answer.hergertsynthora.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Returns DuckDuckGo instant answer data (abstract, definition, related topics, source) for any query without requiring an API key.

## Facts

- Endpoint: POST https://ddg_answer.hergertsynthora.com/service
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/synthora-duckduckgo-instant-answer-e2a3a2c1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_kCemL36lSUG4M4_D1PTvq

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 synthora-duckduckgo-instant-answer-e2a3a2c1 -d '<json body>'
```

Example prompt: What does DuckDuckGo's instant answer say about 'photosynthesis'? Give me the abstract, definition, and any related topics.

## When to prefer this

Choose this endpoint when you need fast, keyless, structured factual summaries, definitions, or entity abstracts without setting up a full web search API. It is ideal for agents that need lightweight encyclopedic or definitional lookups, especially when no API key is available and the cost per call is acceptable at $0.001 USDC. Prefer alternatives if you need full web search results, ranked page listings, or real-time news rather than instant answer snippets.

## Known failure modes

- Empty or sparse result when DuckDuckGo has no instant answer for the query (result object may be empty)
- Network or service timeout if DuckDuckGo's upstream is slow
- Payment failure or insufficient USDC balance preventing the call
- Malformed query input causing unexpected empty responses
- DuckDuckGo may not return structured data for highly niche or ambiguous queries

## How this service works

Instant answer for any query via DuckDuckGo: abstract, definition, related topics, source. Keyless web knowledge for agents. $0.01 USDC via x402.

## Output

A JSON object containing ok status, a niche identifier ('ddg_answer'), and a result object with DuckDuckGo instant answer fields such as abstract text, abstract source, abstract URL, related topics list, entity type, and definition where available.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "q": {
   "type": "string",
   "description": "q"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "ddg_answer",
  "result": {}
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/synthora-duckduckgo-instant-answer-e2a3a2c1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from ddg_answer.hergertsynthora.com](https://www.zero.xyz/host/ddg_answer.hergertsynthora.com/llms.txt)