# Locus x402 Grok Models List

> Locus x402 Grok Models List is a paid API for AI agents from grok.x402.paywithlocus.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).

Lists available Grok AI models accessible via the Locus x402 pay-per-use API gateway

## Facts

- Endpoint: POST https://grok.x402.paywithlocus.com/grok/models
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/locus-x402-grok-models-list-17be264f
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_JCWOrKDUmZphrSQ5wIIUo

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 locus-x402-grok-models-list-17be264f -d '<json body>'
```

Example prompt: What Grok models are available through the Locus x402 pay-per-use gateway right now?

## When to prefer this

Use this endpoint when you need to programmatically discover which Grok model IDs are available on the Locus x402 gateway before making inference calls, especially in agent workflows that need to select a model dynamically or validate a model exists prior to committing a micropayment.

## Known failure modes

- Payment not included or insufficient USDC balance results in 402 Payment Required
- Invalid or malformed POST body returns 400 Bad Request
- Gateway or upstream xAI service unavailable returns 503
- Empty or null body may cause schema validation failure

## How this service works

Locus public pay-per-use API

## Output

A list of available Grok AI model identifiers and their metadata hosted on the Locus x402 pay-per-use gateway, enabling callers to know which model IDs are valid for subsequent inference calls.

## 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",
    "bodyType",
    "body"
   ],
   "properties": {
    "body": {
     "type": "object",
     "properties": {},
     "additionalProperties": true
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/locus-x402-grok-models-list-17be264f/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from grok.x402.paywithlocus.com](https://www.zero.xyz/host/grok.x402.paywithlocus.com/llms.txt)