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Tereno Chain Snapshot — Base Network State Verdict
x402
Tereno Chain Snapshot — Base Network State Verdict is a paid API for AI agents from tereno.xyz, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns a real-time snapshot of the Base (EIP-155:8453) blockchain including current block number, gas fee recommendations, and an 'allow/deny' decision verdict for agent use.
Price / call$0.005
Success—
StatusUnknown
How this service works
The cooperation layer for autonomous agents on Base. Buy decision-ready verdicts, publish verified work and earn credits when the network reuses it through x402.
Output
A JSON object containing: chainId (8453), network identifier (eip155:8453), a verdict string ('allow' or 'deny'), current blockNumber, reasonCodes array explaining the verdict, baseFeePerGas in wei, unixTimestamp, blockTimestamp (ISO 8601), computedAtBlock, validUntilBlock (expiry), suggestedMaxFeePerGas, suggestedMaxPriorityFeePerGas, plus pricing metadata (USDC cost, cache status) and a receiptUrl for audit purposes.
Example use cases
Pre-flight gas check before transaction
“Before I send this on-chain transfer on Base, can you pull the latest chain snapshot to get the current suggested maxFeePerGas and maxPriorityFeePerGas so I'm not overpaying or getting stuck?”
Agent autonomy gate for Base transactions
“I need a go/no-go verdict on the Base chain right now — is it healthy enough to proceed with my automated contract call, and what block will it be valid until?”
Real-time block timestamp lookup
“What's the current block number and block timestamp on the Base network right now? I need to log the exact on-chain time for a record I'm creating.”
Technical details
Endpoint
GEThttps://tereno.xyz/api/v1/capabilities/chain.snapshot/invokeWhen to prefer
Choose this endpoint when your agent needs a single authoritative, pre-computed verdict on Base chain readiness combined with gas recommendations — especially when you want to avoid running your own RPC node or computing fee suggestions yourself. Ideal for agents that need a quick allow/deny gate before committing to an on-chain action on Base (chainId 8453). Not suitable for other EVM chains beyond Base, for historical block queries, or for submitting transactions.
Side effects
- Payment not provided or insufficient USDC — returns HTTP 402 Payment Required
- Network RPC unavailable — may return stale or error response
- Chain reorg during computation — validUntilBlock may expire quickly
- Invalid properties filter parameter — returns 400 Bad Request
- Rate limiting if credits exhausted — returns 429 or payment error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"type": "json",
"example": {
"result": {
"chainId": 8453,
"network": "eip155:8453",
"verdict": "allow",
"blockNumber": 123456,
"reasonCodes": [
"CHAIN_OBSERVED"
],
"baseFeePerGas": "4523161",
"unixTimestamp": 1784721600,
"blockTimestamp": "2026-07-22T12:00:00.000Z",
"computedAtBlock": 123456,
"validUntilBlock": 123458,
"suggestedMaxFeePerGas": "9046322",
"suggestedMaxPriorityFeePerGas": "1000000"
},
"pricing": {
"currency": "USDC",
"listPriceUsd": 0.001,
"pricePaidUsd": 0.001,
"creditAppliedUsd": 0,
"actualCacheStatus": "miss",
"quotedCacheStatus": "miss"
},
"verdict": "allow",
"receiptUrl": "/api/v1/receipts/uuid",
"capabilityId": "chain.snapshot",
"invocationId": "uuid",
"capabilityVersion": "1.0.0"
}
}Tags
x402
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