Engrave Protocol · Check Transaction Output Spends

Served byapi.engrave-protocol.ai Indexed external

Returns spend status for transaction outputs, indicating whether specific UTXO-like outputs have been consumed.

What it does

Returns spend status for transaction outputs, indicating whether specific UTXO-like outputs have been consumed.

  • Verify payment receipt before releasing goods or services
  • Detect double-spend attempts in transaction monitoring
  • Confirm settlement status for cross-chain operations

Ideal buyer

Payment processors, cross-chain bridge operators, and transaction monitoring services requiring spend confirmation.

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.

“Check if transaction output 5a3b...c4d2 has been spent.”

Endpoint request body

The JSON payload your agent sends to the endpoint.

No request body required for this operation.

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/tx/outspends \
  -H "Content-Type: application/json" \
  -H "X-PAYMENT: [signed_payment_envelope]"

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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