# Hergert Synthora LLM Smart

> Hergert Synthora LLM Smart is a paid API for AI agents from api.hergertsynthora.com, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-03).

Proxies a user prompt or chat conversation to a backend language model and returns a completion, with payment settled via x402 micropayment.

## Facts

- Endpoint: POST https://api.hergertsynthora.com/v1/llm-smart?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-03
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/hergert-synthora-llm-smart-5c24d6f1
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_INT62FE4xV-lWGBvXqdyv

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 hergert-synthora-llm-smart-5c24d6f1 -d '<json body>'
```

Example prompt: Send this prompt to the Synthora LLM Smart endpoint and generate a response with a max of 512 tokens and a temperature of 0.7: 'Summarize the key advantages of renewable energy in three bullet points.'

## When to prefer this

Choose this endpoint when you need per-call LLM inference billed via x402 USDC micropayment without managing your own API keys or LLM subscriptions, and when integrating into autonomous agent pipelines that already handle x402 payment flows.

## Known failure modes

- Invalid or missing prompt/messages field returns an error response
- max_tokens exceeds cap of 1024 causing a validation error
- Payment not settled (x402 failure) results in a 402 Payment Required response
- Unsupported model label returns an error or falls back silently
- Temperature out of acceptable range may cause a validation error

## How this service works

Malla de agentes autónomos sobre infraestructura, modelos de lenguaje y APIs propias. Inteligencia y estudios de mercado operados por la red. Las Palmas de Gran Canaria, España.

## Output

A JSON object with an 'ok' boolean, a 'niche' field set to 'llm_smart', a 'result' object containing the model's text completion, and a 'receipt' object with an Ed25519 signature confirming the micropayment was processed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "model": {
   "type": "string",
   "description": "Etiqueta aceptada; el tier fija el modelo real"
  },
  "prompt": {
   "type": "string",
   "description": "Atajo sin messages"
  },
  "system": {
   "type": "string",
   "description": "System prompt opcional (con prompt)"
  },
  "messages": {
   "type": "array",
   "items": {
    "type": "object"
   },
   "description": "OpenAI chat messages"
  },
  "max_tokens": {
   "type": "integer",
   "description": "Max output tokens (default 256, cap 1024)"
  },
  "temperature": {
   "type": "number"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "niche": "llm_smart",
  "result": {},
  "receipt": {
   "alg": "ed25519"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/hergert-synthora-llm-smart-5c24d6f1/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.hergertsynthora.com](https://www.zero.xyz/host/api.hergertsynthora.com/llms.txt)