# Solana Mint Instant Intel – Latest Blockhash

> Solana Mint Instant Intel – Latest Blockhash 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 latest Solana blockhash and lastValidBlockHeight for building and signing transactions, cached for up to 1 second at confirmed commitment level.

## Facts

- Endpoint: GET https://mintintel.35-171-220-195.sslip.io/v1/sol/blockhash?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-mint-instant-intel-latest-blockhash-253b4b86
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_nUhgNXYJa8vDZJo8cxN-D

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-mint-instant-intel-latest-blockhash-253b4b86
```

Example prompt: I need the latest Solana blockhash and lastValidBlockHeight so I can build and sign a transaction right now — grab the confirmed one from Mint Intel.

## When to prefer this

Choose this endpoint when you need a fast, low-cost, pre-cached Solana blockhash and lastValidBlockHeight for transaction construction — especially in automated pipelines where making a raw Solana RPC call would add latency or complexity. At $0.001 USDC per call, it is cheaper than maintaining your own RPC node for this single query. Prefer it over direct RPC when you need a simple one-call solution with caching guarantees and confirmed commitment semantics.

## Known failure modes

- Stale cache: if the cache hasn't refreshed within 1 second, the blockhash may be slightly behind the live chain tip
- Network unavailability: if the upstream Solana RPC is unreachable, the endpoint may return an error or timeout
- Payment failure: missing or invalid x402 payment header results in a 402 Payment Required response
- Rate limiting: excessive requests may be throttled beyond the cached refresh window

## How this service works

Latest Solana blockhash + lastValidBlockHeight for building and signing transactions (confirmed, cached <=1 s).

## Output

Returns a JSON object containing two fields: 'blockhash' (a base58-encoded string representing the latest confirmed Solana blockhash) and 'lastValidBlockHeight' (an integer indicating the last block height at which a transaction using this blockhash will still be accepted by the network). Data is cached for up to 1 second at confirmed commitment level.

## 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": {},
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "blockhash",
      "lastValidBlockHeight"
     ],
     "properties": {
      "blockhash": {
       "type": "string"
      },
      "lastValidBlockHeight": {
       "type": "integer"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/solana-mint-instant-intel-latest-blockhash-253b4b86/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)