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Solana Blockhash & Expiry Fetcher
x402
Solana Blockhash & Expiry Fetcher is a paid API for AI agents from solana-pulse-gateway-1021990235790.us-central1.run.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).
Returns a fresh Solana blockhash along with the number of blocks and approximate seconds remaining before it expires, so agents can time transaction construction correctly.
Price / call$0.01
Success—
StatusUnknown
How this service works
Use right before building a transaction you will sign. Blockhashes expire after about 60-90 seconds; this tells you how much time is left. Returns a fresh blockhash plus how many blocks and roughly how many seconds remain before it expires.
Output
Returns a fresh recent blockhash string for use in Solana transaction construction, along with the number of blocks remaining until it expires and an approximate seconds-remaining countdown (blockhashes typically last 60–90 seconds / ~150 blocks).
Example use cases
Pre-transaction blockhash timing check
“I'm about to sign a Solana transaction — can you fetch a fresh blockhash right now and tell me how many seconds I have left before it expires?”
Avoiding expired blockhash errors
“My last Solana transaction failed because the blockhash was stale. Before we retry, get me a new one and show me how much time is left on it.”
Agent transaction pipeline coordination
“We're building a multi-step Solana transaction workflow — fetch a fresh blockhash with its expiry countdown so we know how tight our signing window is.”
Technical details
Endpoint
POSThttps://solana-pulse-gateway-1021990235790.us-central1.run.app/api/tools/get_solana_blockhash?utm_source=zero.xyzWhen to prefer
Use this endpoint immediately before constructing a Solana transaction that will be signed, especially when your agent needs to know precisely how much time remains in the blockhash validity window. It is more informative than a raw RPC call because it surfaces the expiry countdown (blocks and seconds remaining), helping agents avoid the common failure mode of submitting a transaction with an already-expired blockhash.
Side effects
- RPC node unavailable or rate-limited — returns error with no blockhash
- Network congestion causing stale slot data — blockhash returned may have reduced TTL
- Request times out due to Solana RPC latency spike
- Payment of $0.01 USDC not processed — request rejected by x402 gateway
Tags
x402
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