COBS byte stuffing API

Encodes/decodes Consistent Overhead Byte Stuffing, removing zero bytes from a frame so 0x00 can be used as a packet delimiter, reporting the overhead added. Answers 'What is the COBS encoding of this frame?', 'Decode this COBS packet.'

Price$0.02per request

MethodPOST

Route/v1/encoding/cobs

StatusLive

MIME typeapplication/json

Rate limit120/minute

Cache0s public

cobsbyte-stuffingframingserialencodedecodepacketencoding

API URLhttps://x402.hexl.dev/v1/encoding/cobs

Integration docs

Example request

{
  "value": "1100020033",
  "inputEncoding": "hex"
}

Example response

{
  "operation": "encode",
  "result": "021102020233",
  "byteLength": 6,
  "overhead": 1,
  "interpretation": "COBS-encoded 5 bytes to 6 bytes (overhead 1)."
}

Input schema

{
  "type": "object",
  "required": [
    "value"
  ],
  "properties": {
    "value": {
      "type": "string",
      "examples": [
        "1100020033"
      ]
    },
    "operation": {
      "type": "string",
      "enum": [
        "encode",
        "decode"
      ]
    },
    "inputEncoding": {
      "type": "string",
      "examples": [
        "hex",
        "utf8",
        "base64"
      ]
    }
  }
}

Output schema

{
  "type": "object",
  "additionalProperties": true
}