# Solana Next Slot Leaders

> Solana Next Slot Leaders is a paid API for AI agents from mintintel.35-171-220-195.sslip.io, paid per call via x402, $0.001/call, status unknown (last checked 2026-10-31).

Returns the upcoming Solana slot leader windows (validator identity, vote account, stake, commission, timing) merged into 4-slot groups so transactions can be routed to the next block producers.

## Facts

- Endpoint: GET https://mintintel.35-171-220-195.sslip.io/v1/sol/next-leaders?utm_source=zero.xyz
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/solana-next-slot-leaders-f1c7323b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_pXqXuERsucwlOCco4iA0g

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 solana-next-slot-leaders-f1c7323b
```

Example prompt: Show me the next 5 Solana slot leader windows — I need to know each validator's identity, their active stake, commission, and how many seconds until each window starts so I can route my transaction to the right leader.

## When to prefer this

Choose this endpoint when you need real-time, pre-aggregated Solana slot leader data in 4-slot windows with validator metadata (stake, commission, vote account) already merged in — saving you multiple raw RPC calls. Prefer it over raw getSlotLeaders when you need timing (seconds until window) and validator details in one shot for transaction routing or scheduling.

## Known failure modes

- limit out of range (must be 1–25) returns a 400 validation error
- RPC node unavailable returns a 502 or timeout
- stale data if the Solana RPC is lagging behind the chain tip
- payment not attached or insufficient USDC returns a 402 payment required error

## How this service works

The next Solana slot leaders from getSlotLeaders, merged into 4-slot leader windows: validator identity, vote account, active stake, commission, first/last slot and seconds until each window starts. Route time-critical transactions to the upcoming leaders. ?limit=1..25.

## Output

A JSON object containing the current slot number and an array of upcoming 4-slot leader windows, each with: validator identity public key, vote account address, active stake (lamports), commission percentage, first and last slot of the window, and seconds until the window begins.

## 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": {
      "limit": {
       "type": "integer",
       "maximum": 25,
       "minimum": 1,
       "description": "number of upcoming leader windows (default 10)"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "currentSlot",
      "leaders"
     ],
     "properties": {
      "leaders": {
       "type": "array"
      },
      "currentSlot": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solana-next-slot-leaders-f1c7323b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from mintintel.35-171-220-195.sslip.io](https://www.zero.xyz/host/mintintel.35-171-220-195.sslip.io/llms.txt)