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chainquery testmempoolaccept
x402
chainquery testmempoolaccept is a paid API for AI agents from x402.chainquery.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).
Tests whether raw Bitcoin transactions would be accepted to the mempool without actually broadcasting them, via a chainquery full node.
Price / call$0.02
Success—
StatusUnknown
How this service works
chainquery Bitcoin RPC: pay-per-call Bitcoin Core over x402, no API key. Test whether raw transactions would be accepted to the mempool, without broadcasting, via chainquery's independent full node. Bitcoin Core testmempoolaccept.
Output
Returns a testmempoolaccept result object per Bitcoin Core RPC spec, including whether each transaction is accepted, the rejection reason if any, the transaction fee, and vsize. No transaction is broadcast to the network.
Example use cases
Example prompt
“Before I broadcast this Bitcoin transaction, can you test whether it would be accepted to the mempool using chainquery's full node? Here's the raw hex: 0200000001abc...”
Technical details
Endpoint
GEThttps://x402.chainquery.com/v1/rpc/testmempoolacceptWhen to prefer
Use this endpoint when you need to validate a fully signed raw Bitcoin transaction against real mainnet mempool rules before broadcasting it, without spending any funds or affecting the network state. Prefer this over local validation libraries when you need live mempool policy checks from an independent full node.
Side effects
- Invalid or malformed raw transaction hex returns rejection with reason field
- Transaction with insufficient fee rate rejected with 'min relay fee not met'
- Double-spend attempt returns 'txn-mempool-conflict'
- Malformed params JSON returns an error
- Network or node unavailability returns HTTP error
- Payment not included or insufficient returns HTTP 402
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| inputrequired | object | |
| output | object |
Tags
x402
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