# 47620 Solana Slot & Block Height API

> 47620 Solana Slot & Block Height API is a paid API for AI agents from 47620.xyz, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-29).

Returns the current Solana slot number and block height as a cheap liveness probe for the network.

## Facts

- Endpoint: GET https://47620.xyz/x/solana/slot?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-29
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/47620-solana-slot-block-height-api-ded6b2a6
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_q9OHl0KjYc6dfYirIguvl

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 47620-solana-slot-block-height-api-ded6b2a6
```

Example prompt: Can you quickly check whether the Solana network is live right now and tell me the current slot number and block height?

## When to prefer this

Choose this endpoint when you need the cheapest and fastest possible liveness probe for the Solana network — it returns only slot and block height, making it ideal for health checks, monitoring loops, or pre-flight checks before submitting transactions. Prefer this over the richer combined endpoints when you only need confirmation that Solana is producing blocks and don't need SOL/USD price, epoch data, or DEX pairs.

## Known failure modes

- Network connectivity issues to 47620.xyz return connection errors
- Solana RPC backend unavailability may return a non-200 status or ok:false
- Payment failure (x402 protocol) if USDC balance is insufficient
- Invalid 'fields' parameter values return unexpected or empty responses

## How this service works

Current slot number plus block height. Cheapest liveness probe for the network.

## Output

Returns a JSON object containing a boolean 'ok' status, the endpoint identifier, and fields for current slot number and block height. Optionally filterable to only specific top-level keys via the 'fields' query parameter.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "fields": {
       "type": "string",
       "description": "Optional comma-separated top-level response keys to keep (e.g. \"health,slot,solUsd\"). Omit for the full payload."
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type",
    "example"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "json"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "endpoint"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "endpoint": {
       "type": "string"
      }
     },
     "additionalProperties": true
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/47620-solana-slot-block-height-api-ded6b2a6/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from 47620.xyz](https://www.zero.xyz/host/47620.xyz/llms.txt)