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Blockscout Block Countdown
x402
Blockscout Block Countdown is a paid API for AI agents from api.blockscout.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-12).
Returns the estimated time remaining until a specific future block number is reached on a given blockchain network
Price / call$0.002
Success—
StatusUnknown
How this service works
Explore crypto activities with Blockscout's multichain search. Find transactions, addresses, tokens, and dapps across top blockchain networks — your go-to explorer for cross-chain blockchain data
Output
Returns a JSON object with four string fields: current_block_number (the latest block on the chain), countdown_block_number (the target block queried), remaining_blocks_count (how many blocks until the target), and estimated_time_in_seconds (the time estimate to reach the target block).
Example use cases
Smart contract deployment timing
“I'm deploying a contract that needs to go live around block 21500000 on Ethereum — can you check how many blocks are left and estimate how many seconds away that is?”
Token unlock countdown
“A token vesting cliff unlocks at block 20800000 on Ethereum. How many blocks remain and what's the estimated time in seconds until it's reached?”
DeFi governance proposal deadline
“Our governance proposal expires at block 19900000 on this chain with chain ID 1. How many blocks are left and how long in seconds before that block is mined?”
Technical details
Endpoint
GEThttps://api.blockscout.com/%7Bchain_id%7D/api/v2/blocks/%7Bblock_number_param%7D/countdownWhen to prefer
Use this endpoint when you need to estimate when a specific future block will be reached on a supported EVM chain — ideal for scheduling smart contract interactions, monitoring vesting cliffs, governance proposal deadlines, or any time-sensitive on-chain event tied to a block number. Prefer this over manual block-time math for real-time accuracy.
Side effects
- Target block number is in the past — the countdown may return zero or an error
- Invalid chain_id returns a 404 or unsupported chain error
- Block number param is not an integer — schema validation failure
- Target block is too far in the future — estimation accuracy may degrade
- Network unavailable or Blockscout infrastructure outage returns 5xx error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Output
Schema · Response
{
"type": "json",
"example": {
"current_block_number": "string",
"countdown_block_number": "string",
"remaining_blocks_count": "string",
"estimated_time_in_seconds": "string"
}
}Tags
x402
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