Canonicalizes firmware hash, version, device model and minimum bootloader version, then pr
Canonicalizes firmware hash, version, device model and minimum bootloader version, then produces a SHA-256 manifest digest and HMAC-SHA256 release tag using caller-supplied ephemeral key material. This is a symmetric integrity tag, not a vendor PKI signature or code-signing service.
3000 (raw units)
price
2
calls / 30d
2
unique payers
2026-09-14
updated
Provider
iot.halowerk.com · discovered, not yet claimed by its owner
Payment (x402 accepts[])
[
{
"scheme": "exact",
"network": "eip155:8453",
"payTo": "0x2880EdfFF13100677Bf97A3CBdF3Bc34771C4E5E",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"amount": "3000",
"maxTimeoutSeconds": 300
}
]Output schema
{
"bazaar": {
"info": {
"input": {
"body": {
"device_model": "edge-node-x2",
"ephemeral_release_key": "example-release-key-2026",
"firmware_sha256": "aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"minimum_bootloader": "2.0.0",
"version": "4.2.1"
},
"bodyType": "json",
"method": "POST",
"type": "http"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"body": {
"additionalProperties": false,
"properties": {
"device_model": {
"maxLength": 128,
"minLength": 1,
"type": "string"
},
"ephemeral_release_key": {
"description": "Ephemeral example key; do not submit a long-lived production signing key.",
"maxLength": 512,
"minLength": 16,
"type": "string"
},
"firmware_sha256": {
"pattern": "^[0-9a-fA-F]{64}$",
"type": "string"
},
"minimum_bootloader": {
"maxLength": 64,
"minLength": 1,
"type": "string"
},
"version": {
"maxLength": 64,
"minLength": 1,
"type": "string"
}
},
"required": [
"firmware_sha256",
"version",
"device_model",
"minimum_bootloader",
"ephemeral_release_key"
],
"type": "object"
},
"bodyType": {
"enum": [
"json",
"form-data",
"text"
],
"type": "string"
},
"method": {
"enum": [
"POST",
"PUT",
"PATCH"
],
"type": "string"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method",
"bodyType",
"body"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
}
}Use it
curl
curl "https://iot.halowerk.com/v1/ota-sign" # -> 402 Payment Required, accepts[] lists how to pay # retry with a PAYMENT-SIGNATURE (or PAYMENT header) once paid
JavaScript
const res = await fetch("https://iot.halowerk.com/v1/ota-sign");
if (res.status === 402) {
const { accepts } = await res.json();
// pay one of accepts[] via an x402 client, then retry with the payment header
}Python
import httpx
res = httpx.get("https://iot.halowerk.com/v1/ota-sign")
if res.status_code == 402:
accepts = res.json()["accepts"]
# pay one of accepts[] via an x402 client, then retry with the payment headerMachine-readable
Everything on this page is also available as clean JSON at /resources/15221.json, and this resource appears in /discovery/resources and /discovery/search.