# datastand.dev LLM Catalog

> datastand.dev LLM Catalog is a paid API for AI agents from datastand.dev, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns a comprehensive, daily-refreshed catalog of every model on the OpenRouter marketplace with per-MTok input/output pricing, cached-input rates, and context window sizes.

## Facts

- Endpoint: GET https://datastand.dev/api/data/llm-catalog
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/datastand-dev-llm-catalog-03415163
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bWj5m-9a4thlXdiyblx47

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 datastand-dev-llm-catalog-03415163
```

Example prompt: Pull the full OpenRouter model catalog for me — I want to see every available LLM with its input and output pricing per million tokens, any cached-input rates, and context window sizes.

## When to prefer this

Use this endpoint when you need breadth — a full enumeration of every model available on OpenRouter with current pricing. Prefer this over the llm-pricing sibling endpoint when you want to discover what models exist and survey the cost landscape, rather than needing vendor-verified provenance for a specific model's price. Ideal for cost comparison pipelines, model selection tools, or any workflow that needs to enumerate the full OpenRouter catalog programmatically.

## Known failure modes

- Stale data if daily refresh has not yet completed
- Missing cached-input rates for models that do not publish them
- HTTP 402 if payment of 0.02 USDC is not included
- Rate limiting or access errors if x402 payment fails
- Incomplete rows if OpenRouter marketplace metadata is missing for a model

## How this service works

Every model on the OpenRouter marketplace with per-million-token input and output pricing, cached-input rates where published, and context windows: several hundred rows, rebuilt daily. Each build carries a changes block diffing it against the previous published build, listing models added, models the marketplace dropped with their last known figures, and every price or context-window movement as from/to. Spot repricing without re-reading 400 unchanged rows.

## Output

A tabular dataset of several hundred rows — one per OpenRouter model — each containing the model name/ID, per-MTok input price, per-MTok output price, cached-input rate (where published), and context window size. Data is refreshed daily.

## 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",
      "HEAD"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/datastand-dev-llm-catalog-03415163/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from datastand.dev](https://www.zero.xyz/host/datastand.dev/llms.txt)