# Upstream AI/Dev API Status & Model Deprecation Checker

> Upstream AI/Dev API Status & Model Deprecation Checker is a paid API for AI agents from upstream.toolweather.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-20).

Checks live status and deprecation/replacement info for a specific AI or developer API model by ID

## Facts

- Endpoint: POST https://upstream.toolweather.workers.dev/x402/model/%7Bid%7D?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-20
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/upstream-ai-dev-api-status-model-deprecation-checker-fa6490fe
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Lv79FplJGhK57HR-2Xi3_

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 upstream-ai-dev-api-status-model-deprecation-checker-fa6490fe -d '<json body>'
```

Example prompt: Is the GPT-4 Turbo model still live and supported, or has it been deprecated — and if so, what's the recommended replacement?

## When to prefer this

Use this endpoint when you need real-time, authoritative status on whether a specific AI or developer API model is live, deprecated, or replaced — especially before making deployment decisions or diagnosing unexpected API errors. Prefer this over general web search when you need structured, machine-readable status rather than blog posts or changelogs. Best for agents that need to programmatically gate on model availability before calling downstream AI services.

## Known failure modes

- Unknown or unrecognized model ID returns a 404 or empty result
- Model ID not covered in the ~40 tracked APIs returns no data
- Rate limit exceeded for anonymous/free tier returns 402 or 429
- Transient upstream connectivity issues may return stale or unavailable status
- Malformed model ID in URL path causes a 400 error

## How this service works

Is this AI/dev API down? Is this model deprecated and what replaces it? Live status and breaking-change feed for ~40 AI and developer APIs. Free tier: 500 calls/day per free key (POST /v1/keys), 50/day anonymous, 1 free webhook watch. Over the free tier: x402 pay-per-call on eip155:8453.

## Output

Returns live operational status of the specified model/API (up, degraded, down), deprecation status, end-of-life dates if applicable, and the recommended replacement model or migration path if the model has been deprecated or is being phased out.

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/upstream-ai-dev-api-status-model-deprecation-checker-fa6490fe/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from upstream.toolweather.workers.dev](https://www.zero.xyz/host/upstream.toolweather.workers.dev/llms.txt)