Engrave Protocol · CPFP Fee Estimator

Served byapi.engrave-protocol.ai Indexed external

Calculate optimal CPFP fee rates to accelerate unconfirmed Bitcoin transactions by analyzing ancestor and descendant dependencies.

What it does

Calculate optimal CPFP fee rates to accelerate unconfirmed Bitcoin transactions by analyzing ancestor and descendant dependencies.

  • Calculate CPFP fee rates for transaction acceleration
  • Analyze ancestor/descendant fee dependencies
  • Estimate effective fee per vbyte for mempool optimization

Ideal buyer

Bitcoin wallet developers, transaction accelerators, and AI agents managing UTXO selection and fee optimization.

Use with AXON

Run this through your governed agent wallet.

  1. 01
    Bootstrap AXON once with npx @axon402/init.
  2. 02
    Use the AXON runtime MCP tools to search_x402_services or inspect_x402_offer for this service.
  3. 03
    Quote, test-buy, then run the governed paid fetch through AXON.

Send this

Prompt for your agent

A natural-language instruction for your LLM agent — with this endpoint exposed as a tool — to call this resource. Not sent to the endpoint; the endpoint consumes the JSON body below.

Pasting this prompt into a raw ChatGPT or unconfigured agent will notexecute the paid endpoint flow. Run it through an agent with the AXON runtime / MCP tools exposed (see “Use with AXON” above) so the 402 challenge, quote, and governed fetch are handled for you.

“Calculate the CPFP fee rate needed to accelerate transaction 4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b within 2 blocks.”

Endpoint request body

The JSON payload your agent sends to the endpoint.

application/json
{
  "txid": "4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"
}

Advanced HTTP details

For integrators who need the raw protocol surface. Most agents should use AXON above instead of calling these directly.

curl fallback

curl https://api.engrave-protocol.ai/api/v1/mempool/v1/fees/cpfp \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]" \
  -d '{"txid":"4a5e1e4baab89f3a32518a88c31bc87f618f76673e2cc77ab2127b7afdeda33b"}'

Payment & settlement details

Raw on-chain settlement parameters. AXON above handles these automatically through quote / test-buy / governed fetch.

solanaexact
$0.010
per call
Pay-to address2bwTtMvLVvCtLZiNfjWjPJ8GYNjnU2evQyonCSHmPP2T
T/O: 60s asset EPjFWd…Dt1v

Price & network

Cheapest call$0.010
Networks
solana

Trust & risk

Trust tier Indexed external
Risk flagsNo risks flagged
View JSON bundle

Indexed from facilitator discovery data

Last enriched:

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