# MAC Address Info & Properties Lookup

> MAC Address Info & Properties Lookup is a paid API for AI agents from macaddress.openverbs.com, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).

Decodes the first-octet bit flags of a MAC address to report unicast/multicast (I/G bit), universal/locally-administered (U/L bit), broadcast status, and OUI/NIC breakdown for EUI-48 addresses.

## Facts

- Endpoint: POST https://macaddress.openverbs.com/v1/info
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/mac-address-info-properties-lookup-cd58f604
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_AdRhbHLhTmSkmUvIN1Yzf

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability mac-address-info-properties-lookup-cd58f604 -d '<json body>'
```

Example prompt: Can you decode the properties of this MAC address — 00:1A:2B:3C:4D:5E — and tell me whether it's unicast or multicast, universally or locally administered, what the OUI is, and whether it's a broadcast address?

## When to prefer this

Choose this endpoint when you need to decode the semantic bit-level properties of a MAC address — specifically the I/G and U/L flags, broadcast detection, or OUI/NIC split for EUI-48 — rather than just reformatting or validating the address. It is ideal for network auditing, device classification, or vendor identification workflows where understanding what the address represents structurally is the goal.

## Known failure modes

- Invalid or malformed MAC address string returns a validation error
- Empty address field returns a required field error
- Address shorter than minimum length or exceeding 64 characters rejected
- Non-MAC string (e.g. IP address) returns a parsing error
- Payment failure via x402 protocol results in 402 response and no data returned

## How this service works

Report the properties of a MAC address encoded in its first octet: unicast vs multicast (I/G bit), universal vs locally-administered (U/L bit), the broadcast address, and — for EUI-48 — the OUI and NIC portions.

## Output

Returns a structured breakdown of the MAC address including: the I/G bit value (unicast or multicast), the U/L bit value (universally or locally administered), whether the address is the broadcast address (FF:FF:FF:FF:FF:FF), and for EUI-48 addresses, the OUI (first 3 octets identifying the manufacturer) and the NIC-specific portion (last 3 octets).

## Request schema (JSON Schema)

```json
{
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "type": "object",
 "properties": {
  "input": {
   "type": "object",
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "type": "string",
     "enum": [
      "POST"
     ]
    },
    "bodyType": {
     "type": "string",
     "enum": [
      "json",
      "form-data",
      "text"
     ]
    },
    "body": {
     "type": "object",
     "properties": {
      "address": {
       "type": "string",
       "minLength": 1,
       "maxLength": 64,
       "description": "MAC address in colon, hyphen, dot or bare notation."
      }
     },
     "required": [
      "address"
     ],
     "additionalProperties": false
    }
   },
   "required": [
    "type",
    "method",
    "bodyType",
    "body"
   ],
   "additionalProperties": false
  }
 },
 "required": [
  "input"
 ]
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/mac-address-info-properties-lookup-cd58f604/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from macaddress.openverbs.com](https://www.zero.xyz/host/macaddress.openverbs.com/llms.txt)