# NetIntel Username Availability Checker

> NetIntel Username Availability Checker is a paid API for AI agents from netintel-production-440c.up.railway.app, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-11).

Checks a username/handle against 20+ social platforms and developer sites simultaneously to determine if it's taken, available, or unknown on each.

## Facts

- Endpoint: GET https://netintel-production-440c.up.railway.app/username-check/lookup?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/netintel-production-440c-up-railway-app-2615260e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_yRnZgwiVUADqw_vsivLJ1

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 netintel-production-440c-up-railway-app-2615260e
```

Example prompt: Can you check if the username 'morningbloom' is available across social media and developer sites — I want to know which platforms already have someone registered under that handle?

## When to prefer this

Use this endpoint when you need to check username availability or presence across many platforms in a single call rather than manually querying each platform. Ideal for brand handle scouting, identity research, finding a person's social presence, or verifying name availability before registration. Better than single-platform checks when breadth of coverage matters.

## Known failure modes

- Username missing or blank — returns 400 validation error
- Username exceeds 50 characters or contains invalid characters — returns validation error
- Platform probe timeout — individual platforms may return 'unknown' status
- Service temporarily unavailable — 5xx error
- Payment not included or insufficient — 402 Payment Required

## How this service works

Check username availability across 20+ social platforms and developer sites simultaneously — returns which platforms have a profile registered under that handle so agents can find people, verify identities, scout brand handles, or check name availability before registration.

## Output

Returns a per-platform list of results with status (taken/available/unknown) and profile URL for each of 20+ platforms, plus aggregate counts for taken/available/unknown and an overall availability grade and score.

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {
   "username": "testuser123"
  }
 }
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "username"
     ],
     "properties": {
      "username": {
       "type": "string",
       "description": "Username/handle to check (1-50 chars, alphanumeric + hyphens/underscores/dots)"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "properties": {
      "grade": {
       "type": "string"
      },
      "score": {
       "type": "number"
      },
      "results": {
       "type": "array",
       "items": {
        "type": "object",
        "properties": {
         "url": {
          "type": "string"
         },
         "status": {
          "enum": [
           "taken",
           "available",
           "unknown"
          ],
          "type": "string"
         },
         "platform": {
          "type": "string"
         }
        }
       }
      },
      "findings": {
       "type": "array"
      },
      "username": {
       "type": "string"
      },
      "taken_count": {
       "type": "number"
      },
      "unknown_count": {
       "type": "number"
      },
      "available_count": {
       "type": "number"
      }
     }
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "grade": "A",
  "score": 100,
  "results": [
   {
    "url": "https://github.com/johndoe",
    "status": "taken",
    "platform": "GitHub"
   },
   {
    "url": "https://www.npmjs.com/~johndoe",
    "status": "available",
    "platform": "npm"
   },
   {
    "url": "https://www.instagram.com/johndoe",
    "status": "unknown",
    "platform": "Instagram"
   }
  ],
  "findings": [],
  "username": "johndoe",
  "taken_count": 8,
  "unknown_count": 4,
  "available_count": 10
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/netintel-production-440c-up-railway-app-2615260e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from netintel-production-440c.up.railway.app](https://www.zero.xyz/host/netintel-production-440c.up.railway.app/llms.txt)