# Losbeto API Catalog Concierge — Best Endpoint Finder

> Losbeto API Catalog Concierge — Best Endpoint Finder is a paid API for AI agents from markets.losbeto.xyz, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-18).

Given a plain-English task description, returns the single best Losbeto endpoint for that task, ranked by semantic search with cross-encoder reranking, including price, free-sample link, payment URL, and co-purchase stats.

## Facts

- Endpoint: GET https://markets.losbeto.xyz/api/v1/best?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-18
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/losbeto-api-catalog-concierge-best-endpoint-finder-06ad9dda
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_xMXxRXneJdypKbdy2GRWy

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 losbeto-api-catalog-concierge-best-endpoint-finder-06ad9dda
```

Example prompt: I need to get real-time forex data — search the Losbeto catalog with the task 'forex exchange rates' and tell me which endpoint to buy, what it costs, and where to pay.

## When to prefer this

Use this endpoint when an AI agent needs to discover which specific Losbeto endpoint is most relevant for a given task before committing to a purchase. It acts as a paid catalog concierge — ideal for agents that don't know the full Losbeto catalog and want semantic routing guidance with pricing and payment metadata in one call.

## Known failure modes

- Missing required 'task' query parameter returns catalog overview instead of a ranked recommendation
- Vague or ambiguous task strings may produce low-confidence matches
- Payment via x402 required — no payment means 402 response and no data
- Endpoint catalog may not cover niche or very new asset classes
- Network or blockchain payment confirmation delays may cause latency spikes

## How this service works

OpenAI-compatible LLM gateway at $0.005/call — change base_url, pay in USDC. Plus pay-per-call market data: multi-oracle price consensus, sentiment, forex, equities, commodities, Brazil macro (BCB/B3) and crypto. No API keys, no accounts. USDC on Base, Solana, Algorand and Polygon via x402.

## Output

A JSON object identifying the single best-matching Losbeto endpoint for the given task, including: endpoint name, price per call, a free-sample URL, a payment URL for USDC, and a list of co-purchased endpoints derived from real public ledger co-purchase statistics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "queryParams": {
     "type": "object",
     "required": [
      "task"
     ],
     "properties": {
      "task": {
       "type": "string",
       "description": "task parameter"
      }
     }
    }
   }
  },
  "output": {
   "type": "object",
   "properties": {
    "example": {
     "type": "object",
     "description": "Which endpoint should you buy for your task? Paid catalog concierge: send ?task=<plain English> and get the single best Losbeto endpoint for it — ranked by local semantic search (MiniLM ONNX with cross-encoder rerank) — with price, free-sample link, payment URL and what agents who bought it also bought (real co-purchase stats from the public ledger). Called with no ?task= it returns..."
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json"
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/losbeto-api-catalog-concierge-best-endpoint-finder-06ad9dda/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from markets.losbeto.xyz](https://www.zero.xyz/host/markets.losbeto.xyz/llms.txt)