# Stack Facts LLM Model Pricing Snapshot

> Stack Facts LLM Model Pricing Snapshot is a paid API for AI agents from g5joilnmeep4ntz3nwezxt5dmu.srv.us, paid per call via x402, $0.05/call, status unknown (last checked 2026-10-13).

Returns a cryptographically signed snapshot of current LLM model pricing data including input/output token costs, context windows, capabilities, and metadata for dozens of AI models.

## Facts

- Endpoint: GET https://g5joilnmeep4ntz3nwezxt5dmu.srv.us/v1/models/snapshot?utm_source=zero.xyz
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/stack-facts-llm-model-pricing-snapshot-173c4d72
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_J-2MAsk2iTz8rgbnpGAok

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 stack-facts-llm-model-pricing-snapshot-173c4d72
```

Example prompt: Give me the current signed snapshot of LLM model prices — I need to see input and output costs per million tokens, context window sizes, and which models support vision or tool calling.

## When to prefer this

Choose this endpoint when you need cryptographically signed, tamper-evident LLM pricing data that can be verified independently, without maintaining an API key or account. Prefer it over scraping LiteLLM directly when you need signed provenance, or when operating in a pay-per-call agent context using USDC micropayments via x402. Ideal for cost-auditing pipelines, agent frameworks selecting models by price, or any workflow requiring verifiable pricing at the time of query.

## Known failure modes

- Payment not received — returns HTTP 402 requiring USDC payment via x402 protocol
- Network timeout if upstream data source is unavailable
- Stale snapshot flag set to true if data has not been refreshed recently
- Signature verification failure if manifest SHA256 does not match payload
- Empty or reduced record_count if upstream LiteLLM or models.dev source is unavailable

## How this service works

Check a package before install: malware, known vulnerabilities (OSV), exploited CVEs (CISA KEV) and end-of-life, plus LLM prices; signed answers, pay per call in USDC, no account or API key.

## Output

A signed JSON payload containing: an array of LLM model records (id, provider, name, input/output USD per million tokens, cache pricing, context window, max output tokens, vision/tool_call/reasoning flags, release and deprecation dates, knowledge cutoff, input/output modalities); a manifest with snapshot ID, SHA256 hash, cryptographic signature, key ID, source URL, fetch timestamp, record count, and upstream ETags; metadata including staleness flag, dataset name, licence (MIT/LiteLLM attribution), and a manifest URL for independent verification.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "verify": "sha256 of the canonical JSON (R…",
   "licence": {
    "spdx": "MIT",
    "text": "LiteLLM (https://raw.githubuser…",
    "source": "https://raw.githubusercontent.c…",
    "sources": [
     "LiteLLM"
    ],
    "attribution": "Pricing data derived from LiteL…"
   },
   "manifest": {
    "key_id": "sf-test-1",
    "sha256": "f99d55c9aa420561de698d63d70d916…",
    "dataset": "models",
    "licence": "MIT",
    "version": 1,
    "signature": "AvlI5FXM8fD9oncZAr9velQseOBO9X7…",
    "fetched_at": "2026-10-09T06:00:00Z",
    "source_url": "https://raw.githubusercontent.c…",
    "attribution": "Pricing data derived from LiteL…",
    "snapshot_id": "models-20261009T060000Z-f99d55c9",
    "record_count": 36,
    "upstream_etag": {},
    "upstream_meta": {},
    "prev_snapshot_id": "models-20261009T050000Z-044bcb8b"
   },
   "snapshot": {
    "dataset": "models",
    "records": [
     {}
    ],
    "version": 1
   }
  },
  "meta": {
   "as_of": "2026-10-09T06:00:00Z",
   "stale": false,
   "key_id": "sf-test-1",
   "notice": "Normalised (modified) from the …",
   "sha256": "f99d55c9aa420561de698d63d70d916…",
   "source": "https://raw.githubusercontent.c…",
   "dataset": "models",
   "licence": "MIT",
   "signature": "AvlI5FXM8fD9oncZAr9velQseOBO9X7…",
   "attribution": "Pricing data derived from LiteL…",
   "snapshot_id": "models-20261009T060000Z-f99d55c9",
   "manifest_url": "/v1/models/manifest",
   "retrieved_at": "2026-10-09T06:00:00.000Z"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/stack-facts-llm-model-pricing-snapshot-173c4d72/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from g5joilnmeep4ntz3nwezxt5dmu.srv.us](https://www.zero.xyz/host/g5joilnmeep4ntz3nwezxt5dmu.srv.us/llms.txt)