# Kairos Signal DePIN Node Quality Score

> Kairos Signal DePIN Node Quality Score is a paid API for AI agents from kairossignal.com, paid per call via x402, $4.99/call, status unknown (last checked 2026-10-11).

Returns a quality score and intelligence data for a DePIN node, including capacity, usage, supply, and economic activity metrics.

## Facts

- Endpoint: GET https://kairossignal.com/x402/v1/data/node_quality_score?utm_source=zero.xyz
- Price: $4.99/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/kairos-signal-depin-node-quality-score-f4851afd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_B0LakeQSu9gAP6MasyQDY

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 kairos-signal-depin-node-quality-score-f4851afd
```

Example prompt: Can you pull a node quality score from Kairos Signal for this DePIN network node — I need to see its capacity, usage, and economic activity before I decide whether to invest?

## When to prefer this

Choose this endpoint when you need a structured, scored assessment of a specific DePIN node's health and economic viability — especially useful for investment due diligence, network comparison research, or verifying DePIN capacity claims with source-linked data. Prefer this over raw blockchain explorers when you want pre-computed quality signals rather than raw on-chain data.

## Known failure modes

- Missing or invalid node properties parameter returns an error
- Payment of $4.99 USDC not completed results in 402 Payment Required
- Node not found in the Kairos Signal dataset returns empty or null result
- Rate limiting or quota exceeded returns 429 error
- Malformed request body returns 400 Bad Request

## How this service works

Inspect DePIN capacity, usage, supply, and economic activity with source-linked data. Explore coverage and samples before choosing access or scoped diligence.

## Output

A JSON object containing a node quality score along with supporting DePIN intelligence data including capacity metrics, usage statistics, supply figures, and economic activity indicators, all with source links for verification.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

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

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/kairos-signal-depin-node-quality-score-f4851afd/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kairossignal.com](https://www.zero.xyz/host/kairossignal.com/llms.txt)