Claude API guides
Claude API Guides & Tutorials
Practical guides for buying, setting up and getting the most from the Claude API with apiToken.sale — pricing, integrations, payment, and model choice.
45 guides
Buying a key
Get a Claude API key, pay your way, start in minutes.
How to buy a Claude API keyBuy a Claude API key in minutes with apiToken.sale — one key for every Claude model, prepaid balance, card or crypto payment, no Anthropic account required.The cheapest way to use the Claude APIThe cheapest Claude API: buy discounted Claude API tokens at up to 80% off. apiToken.sale sells the identical Anthropic API from prepaid balance with a progressive Claude API discount.Using the Claude API from RussiaAccess the Claude API from Russia and other restricted regions with apiToken.sale — no Anthropic account, pay by card or crypto, one key for every Claude model.Pay for the Claude API with cryptocurrencyBuy Claude API balance with cryptocurrency or bank card on apiToken.sale. No Anthropic account, instant activation, prepaid balance that never expires.Claude API access with no waitlistSkip the Anthropic waitlist and approval. Create an account on apiToken.sale, generate a Claude API key, and make your first call in minutes.Set up the Claude API in two minutesA two-minute Claude API quickstart: create a key, set your base URL to api.apitoken.sale, and send your first /v1/messages request with curl, Python or your IDE.
Free & low cost
Try every Claude model before you spend a cent.
Get a free Claude API key to startCreate a Claude API key with Google or GitHub and get $10 of Claude usage at official API prices — no card required, no Anthropic account, instant access.Try the Claude API freeStart coding with Claude in minutes. New accounts created with Google or GitHub get $10 of Claude usage at official prices, with no card required.Claude Code without the $200/month planRun Claude Code on pay-as-you-go API balance instead of a monthly subscription. Set ANTHROPIC_BASE_URL to api.apitoken.sale and pay only for what you use.Claude Opus 4.8 through the APIAccess Claude Opus 4.8 and 4.7 through one apiToken.sale key at up to 80% off official rates. Best for complex reasoning, refactors and long agent sessions.Claude Sonnet through the APIUse Claude Sonnet 5 and Sonnet 4.6 through apiToken.sale — the default model for daily coding and agents, at up to 80% off official API pricing.Claude Haiku 4.5 through the APIAccess Claude Haiku 4.5 through apiToken.sale — the fastest, most economical Claude model, ideal for high-volume and low-latency tasks, at a prepaid discount.
Tool setup
Wire the API into Cursor, VS Code, Claude Code and SDKs.
Use a Claude API key in CursorConnect Cursor to Claude with an apiToken.sale key: set the Anthropic base URL to api.apitoken.sale, paste your key, pick a model, and code at up to 80% off.Use the Claude API in VS CodeRun Claude in VS Code with Cline or Continue using an apiToken.sale key. Set the Anthropic base URL to api.apitoken.sale and pay per token at a discount.Run Claude in Cursor without an Anthropic accountNo Anthropic account? Use Claude in Cursor with an apiToken.sale key instead. Instant access, card or crypto payment, and up to 80% off official API rates.Point the Anthropic SDK at apiToken.saleUse the official Anthropic Python and TypeScript SDKs with apiToken.sale by setting base_url to api.apitoken.sale. Same SDK, same code, lower cost per token.Use the Claude API with LangChainConnect LangChain to Claude through apiToken.sale: point ChatAnthropic at api.apitoken.sale, keep the same model IDs, and pay 60–80% less per token.Use the Claude API with LiteLLMRoute LiteLLM to Claude through apiToken.sale: set api_base to api.apitoken.sale in litellm_params or the proxy config and pay 60–80% less per token.Use the Claude API with AiderRun Aider on Claude through apiToken.sale: export ANTHROPIC_API_BASE and your key, pick a Claude model, and pair-program in the terminal at 60–80% off.Use the Claude API with Roo CodeConnect Roo Code in VS Code to Claude through apiToken.sale: choose the Anthropic provider, enable the custom base URL, paste your key and code at 60–80% off.Use Claude Code with an apiToken.sale keyConfigure Claude Code with an apiToken.sale key in two environment variables and run every Claude model on prepaid balance at up to 80% off.Run free VS Code AI agents on ClaudeSet up free VS Code agents like Cline and Roo Code with an apiToken.sale Claude key — no Cursor Pro needed. One endpoint, every Claude model, at a discount.Keep your Claude API key secureHow to protect a Claude API key on apiToken.sale with a lifetime spending limit, optional expiration, separate named keys, prompt revocation, and safe secret storage.
Compare
How apiToken.sale stacks up against the alternatives.
apiToken.sale vs buying from Anthropic directlyCompare apiToken.sale and Anthropic direct: identical Messages API and models, but with up to 80% off, no account requirement, and card or crypto payment.apiToken.sale vs OpenRouter for ClaudeChoosing a Claude gateway? Compare apiToken.sale and OpenRouter: a native Anthropic endpoint and prepaid discount vs a multi-provider router.Claude Opus vs Sonnet: which model to useOpus or Sonnet? A practical guide to picking the right Claude model for coding and agents — and using both on one apiToken.sale key and balance.apiToken.sale vs ProxyAPIComparing Claude API resellers: apiToken.sale offers a native Anthropic endpoint with a progressive 60–80% discount, card or crypto payment, and one key for every model.apiToken.sale vs PortkeyPortkey is an AI gateway for routing and observability using your own provider keys. apiToken.sale provides the Claude key and balance itself, at a discount. Here is when to use each.apiToken.sale vs LiteLLMLiteLLM is a self-hosted proxy that unifies model APIs but needs your own funded keys. apiToken.sale is a hosted, discounted Claude endpoint with nothing to run.The best Claude model for codingWhich Claude model should you use for coding? A practical guide to picking Opus, Sonnet or Haiku per task — all available on one apiToken.sale key.Claude Max subscription vs the APIWhen to use a Claude subscription vs the Claude API. apiToken.sale gives pay-as-you-go API access to every model with no monthly fee and up to 80% off.Claude 3.5 vs Claude 4: what changedMoving from Claude 3.5 to the current Claude 4 line? What improved, updated model IDs, and how to switch on apiToken.sale with one base-URL change.Why choose apiToken.saleWhy developers pick apiToken.sale for Claude: the same Anthropic API up to 80% off, discounted Claude API tokens, instant access with no Anthropic account, and card or crypto payment.
How it works
Pricing, billing, activation and support, explained.
How Claude API pricing worksUnderstand Claude API pricing: per-token input and output rates, prompt caching, and how apiToken.sale applies a progressive discount of up to 80% off.How to save tokens on the Claude APICut Claude API costs with prompt caching, the right model per task, and tighter context. Practical token-saving tactics that stack with the apiToken.sale discount.How billing worksUnderstand apiToken.sale billing: prepaid balance, per-request metering at official rates, your progressive discount, and token-level usage in the dashboard.How fast your Claude API key activatesapiToken.sale keys activate instantly. Generate a key, top up, and make a successful Claude API call within minutes — no manual review or waitlist.Where you can use apiToken.saleapiToken.sale works worldwide with no Anthropic billing-country requirement. Pay by card or crypto and use the Claude API from regions Anthropic does not serve directly.Refunds and supportLearn how apiToken.sale handles balance, refunds and support. Prepaid balance never expires, and help is available in English and Russian through Telegram.What a Claude API gateway isA Claude API gateway sits between your tools and Anthropic, adding access, billing and control. apiToken.sale is a native gateway with a 60–80% discount.Understanding Claude API rate limitsWhat a 429 means on apiToken.sale, how to handle it with Retry-After and backoff, and how key spending guardrails differ from throughput limits.Streaming responses from the Claude APIHow to stream Claude responses on apiToken.sale for responsive coding agents and UIs. Same Anthropic SSE format, billed the same as non-streaming.Cutting costs with Claude prompt cachingPrompt caching makes repeated context on the Claude API much cheaper. How it works on apiToken.sale, when to use it, and how it stacks with your discount.Claude API best practicesPractical best practices for the Claude API on apiToken.sale: model choice, prompt caching, streaming, lifetime key spending limits, expiration, and secure key handling.Using the Claude API for AI agentsBuild AI agents on the Claude API with apiToken.sale: one key for every model, streaming, tool use, prompt caching and a lifetime key spending limit for long-run cost control.