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Claude (Anthropic) cURL API Setup

Use cURL to smoke-test Claude (Anthropic) 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: Claude Sonnet 4.6
Mainland China access: proxy/relay likely needed

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

Claude API buyer intent notes

Who should care

Best for teams that need strong writing, coding, long-context reasoning, tool use, and enterprise-quality assistant behavior from Anthropic models.

Decision trigger

Use Claude when answer quality and agent reliability justify billing, access checks, and potential mainland China relay planning.

Watch out: Free-credit claims are often stale; verify Anthropic Console billing, model access, regional availability, and fallback routes before production.

Claude pricingModel cost and context checks Claude China accessProxy and relay planning OpenAI pricingDirect platform comparison point

Production readiness checklist

Quota gate No confirmed free API quota is recorded; verify Claude (Anthropic) 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 Run signup, dashboard, DNS, TLS, and first API call checks from mainland China before launch.

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 $CLAUDE_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "Claude Sonnet 4.6",
    "messages": [{"role": "user", "content": "Hello from yangmao.ai"}]
  }'

Free API and pricing notes

API requires payment, no free tier

Access and production risk

Relay or proxy may be needed

Requires proxy in China. API accessible via relay services. Registration needs non-China phone number.

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.

Claude (Anthropic) production validation table

Use this table before sending real users, scheduled agents, or paid traffic to Claude (Anthropic). 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 Claude (Anthropic) alternatives or route through a gateway before inviting users.

First request from target region Proxy, relay, or non-mainland deployment path is documented before launch. 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.

额度变动提醒

想知道免费额度、价格或可用性变化？先订阅提醒，后续也可以对比官方平台、API 网关和同类替代方案。

订阅提醒 → 获取 OpenLLMAPI Key → 比较 API 网关 →

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: claude
Official source: https://claude.ai
Last updated: 2026-06-16
Free tier: Limited messages/day
API credits: $0
Rate limit: N/A
Access note: Requires proxy in China. API accessible via relay services. Registration needs non-China phone number.

FAQ

Does Claude (Anthropic) 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 Claude (Anthropic) 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 Claude (Anthropic) docs.

Can I use Claude (Anthropic) from mainland China?

Claude (Anthropic) may need a proxy or relay from mainland China. Test latency and signup before production.

What should I do when Claude (Anthropic) credits run out?

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

Should I use Claude for free API testing?

Only if Anthropic currently grants usable trial credits to your account. Otherwise compare no-card providers or API gateways for testing and keep Claude for quality-critical workloads.