# Locus x402 Anthropic Models List

> Locus x402 Anthropic Models List is a paid API for AI agents from anthropic.x402.stage.paywithlocus.com, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Lists available Anthropic AI models via a pay-per-use x402 payment-gated API endpoint

## Facts

- Endpoint: POST https://anthropic.x402.stage.paywithlocus.com/anthropic/models
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/locus-x402-anthropic-models-list-b0001a5a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tfZp1StBEa9QKdQ8Xguez

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-anthropic-models-list-b0001a5a -d '<json body>'
```

Example prompt: Can you give me a list of all the Anthropic models available through the Locus x402 API, showing the first 10 entries?

## When to prefer this

Use this endpoint when you need to programmatically discover which Anthropic models are available through the Locus x402 pay-per-use gateway, especially when building agent workflows that need to select or reference a specific Claude model by ID. Prefer this over hardcoding model names when model availability may change or when you need up-to-date model listings at runtime.

## Known failure modes

- Payment not provided or insufficient USDC balance — request rejected with 402 Payment Required
- Invalid cursor IDs (after_id or before_id) — may return empty list or error
- Limit value out of acceptable range — may be clamped or return validation error
- Gateway or upstream Anthropic API unavailability — 503 or timeout response

## How this service works

Locus public pay-per-use API

## Output

Returns a paginated list of Anthropic AI models, including model identifiers and metadata. Supports cursor-based pagination via after_id and before_id parameters to navigate through the full catalog.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "limit": {
   "type": "number"
  },
  "after_id": {
   "type": "string"
  },
  "before_id": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/locus-x402-anthropic-models-list-b0001a5a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from anthropic.x402.stage.paywithlocus.com](https://www.zero.xyz/host/anthropic.x402.stage.paywithlocus.com/llms.txt)