yangmao.ai · cURL setup money page

HFViewer cURL API Setup

Use cURL to smoke-test HFViewer before wiring SDK code. Confirm the exact endpoint, model name, and quota in the provider dashboard.

Open official provider → Get one OpenAI-compatible key → Compare API gateway options →

Quick verdict

Free API: Not confirmed in the current snapshot
Rate limits: N/A
Best model starting point: Hugging Face Model Visualizer
Mainland China access: direct or relatively friendly

Provider fit matrix

Best fit Fast provider evaluation, prototypes, and fallback routing

Watch out Free credits and rate limits can change without warning

Production fallback Keep at least one compatible backup provider before shipping

Production readiness checklist

Quota gate No confirmed free API quota is recorded; verify HFViewer docs before collecting keys.

No-card check Try the free path first, then confirm whether billing is required for API keys, higher RPM, or production endpoints.

Regional smoke test Still run one request from your deployment region and from mainland China if users are there.

Source freshness Snapshot date: 2026-06-16; official quota and pricing can change without notice.

cURL smoke test

Use this to verify endpoint, auth header, model name, response shape, and quota before adding SDK abstractions.

curl https://api.provider.example/v1/chat/completions \
  -H "Authorization: Bearer $HFVIEWER_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Hugging Face Model Visualizer",
    "messages": [{"role": "user", "content": "Hello from yangmao.ai"}]
  }'

Free API and pricing notes

No public API or API pricing found; the core product is a free web visualizer

Access and production risk

Mainland China friendly / direct path likely

The site is directly accessible; model metadata depends on Hugging Face and may require a proxy in some regions.

How to set it up

Create an API key and copy the provider endpoint from official docs.

Export the key into your shell session.

Send a minimal chat completion payload with cURL.

Check status code, JSON body, and rate-limit headers.

Move the tested endpoint into your app or fallback relay.

HFViewer production validation table

Use this table before sending real users, scheduled agents, or paid traffic to HFViewer. The goal is to validate source freshness, quota behavior, regional access, and fallback needs instead of trusting a stale free-credit claim.

Check Pass condition If it fails

Signup and billing state Dashboard confirms whether API keys require billing or manual approval. Compare HFViewer alternatives or route through a gateway before inviting users.

First request from target region A minimal request succeeds from your deployment region and mainland-China test point if relevant. Do not ship cron jobs or public demos until latency, DNS, TLS, and auth are repeatable.

Quota, retry, and error shape Rate-limit behavior matches the current N/A note or official dashboard values. Cap retries, add request logging, and keep a second route for 429/5xx bursts.

Cost per accepted task Real prompts stay within your target token, query, image-credit, or compute budget. Use cheaper primary routes, caching, shorter prompts, or fallback only after validation failure.

Credit-change alerts

Want to know when free credits, pricing, or availability changes? Subscribe first, then compare official providers, API gateways, and alternatives.

Subscribe → Get an OpenLLMAPI key → Compare API gateways →

Source snapshot

Data source: yangmao.ai provider YAML tracker plus provider docs reviewed by the daily crawler. Official dashboards can change quota and pricing without notice; verify before production.

yangmao.ai provider id: hfviewer
Official source: https://hfviewer.com
Last updated: 2026-06-16
Free tier: Free web access
API credits: $0
Rate limit: N/A
Access note: The site is directly accessible; model metadata depends on Hugging Face and may require a proxy in some regions.

FAQ

Does HFViewer have a free API?

No confirmed free API is recorded in the current yangmao.ai snapshot; use the official docs as source of truth before signing up.

Is HFViewer OpenAI-compatible?

This snapshot uses a provider-specific OpenAI SDK example. If your app requires one stable OpenAI-compatible endpoint, use an aggregator or relay after checking HFViewer docs.

Can I use HFViewer from mainland China?

HFViewer is marked as relatively direct or Mainland-China-friendly in the current tracker.

What should I do when HFViewer credits run out?

Compare the alternatives below, check /en/free-ai-api/, and shortlist official providers or API gateway options before production.