# kair-os.trade x402 Service Recommender

> kair-os.trade x402 Service Recommender is a paid API for AI agents from kair-os.trade, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-30).

Recommends up to five relevant Base USDC x402-priced API services matching a task description and per-call budget, drawn from a partially refreshed Coinbase/PayAI catalogue with live 402 price observations.

## Facts

- Endpoint: POST https://kair-os.trade/x402-recommend/recommend?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-30
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kair-os-trade-x402-service-recommender-d576735a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P25iMa1raSGv2ok6eyQZ2

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 kair-os-trade-x402-service-recommender-d576735a -d '<json body>'
```

Example prompt: Search the x402 catalogue for up to five services that can help me screen text for prompt injection attacks, with a max price of $0.02 USDC per call.

## When to prefer this

Use this endpoint when an AI agent needs to discover x402-priced micropayment APIs on Base that match a specific task and cost constraint, especially when drawing from the Coinbase/PayAI/agentic.market catalogue. Prefer over generic API directories when you specifically need live 402 price observations and USDC-denominated budget filtering.

## Known failure modes

- Task description too vague to match any catalogue entries — returns empty or low-confidence suggestions
- Budget set too low to match any currently priced x402 services
- Catalogue partially stale — some services may have changed prices or gone offline since last refresh
- Input besoin exceeds 1200 character limit — request rejected
- budget_usdc value malformed or negative — validation error returned

## How this service works

Find up to five exploratory Base USDC x402 services for a task and budget, using a refreshed partial Coinbase/PayAI catalogue, Jev advertised relevance and freshly observed matching 402 prices. Returning non-robot payer counts and service fulfillment remain unknown; these suggestions do not establish a best service.

## Output

Returns up to five x402 service suggestions, each with catalogue-matched endpoint details, advertised relevance scores, and freshly observed 402 prices. Does not guarantee service fulfillment or non-robot payer counts; results are exploratory and not a definitive best-service ranking.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "besoin": {
   "type": "string",
   "maxLength": 1200,
   "minLength": 1
  },
  "budget_usdc": {
   "anyOf": [
    {
     "type": "string",
     "pattern": "^(0|[1-9][0-9]{0,17})(\\.[0-9]{1,6})?$"
    },
    {
     "type": "number",
     "minimum": 0
    }
   ],
   "description": "Maximum price per suggested service, in USDC; at most six decimal places."
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kair-os-trade-x402-service-recommender-d576735a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kair-os.trade](https://www.zero.xyz/host/kair-os.trade/llms.txt)