# Aubrai Longevity Chat (x402)

> Aubrai Longevity Chat (x402) is a paid API for AI agents from aubrai-x402.vercel.app, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Accepts a longevity or aging science question and returns a request ID for polling the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist.

## Facts

- Endpoint: GET https://aubrai-x402.vercel.app/api/chat
- 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/aubrai-longevity-chat-x402-18214a81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Jc1uXYAD-IFt2feqkp2Tm

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 aubrai-longevity-chat-x402-18214a81
```

Example prompt: Ask Aubrai, VitaDAO's longevity co-scientist, whether rapamycin actually extends human lifespan — I want a quick conversational answer, not a deep dive.

## When to prefer this

Use this endpoint when you need AI-generated answers specifically about longevity, aging, lifespan extension, or related biogerontology topics. Prefer fast=true for conversational follow-ups and fast=false (or omitted) for research-grade answers with citations. Choose this over general LLM endpoints when you want Aubrai's specialized decentralized science perspective aligned with VitaDAO's research community.

## Known failure modes

- Missing or empty 'message' parameter returns an error
- Payment not fulfilled (x402 payment required at $0.02 USDC per call)
- Polling timeout if the agent does not retrieve the answer within an acceptable window
- Irrelevant or off-topic questions may yield low-quality responses outside longevity domain
- Network or server errors on Vercel deployment

## How this service works

Send a question about longevity, aging, or lifespan science. Returns a request ID to poll for the AI-generated answer from Aubrai, VitaDAO's decentralized co-scientist.

## Output

Returns a request ID that the agent must poll to retrieve the AI-generated answer. The answer may be a brief conversational response (fast mode, ~3-6s) or a deep research synthesis with citations (standard mode, ~15-25s), both focused on longevity, aging, and lifespan science.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "fast": {
   "type": "boolean",
   "description": "true → quick conversational answer (3-6s). false/omit → deep research with citations (15-25s)."
  },
  "message": {
   "type": "string",
   "description": "Chat message"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aubrai-longevity-chat-x402-18214a81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aubrai-x402.vercel.app](https://www.zero.xyz/host/aubrai-x402.vercel.app/llms.txt)