🌐
Claude API Reference
platform.claude.com › docs › en › api › admin › api_keys › retrieve
Get Api Key - Claude API Reference
ID of the Workspace associated with the API key, or null if the API key belongs to the default Workspace. ... curl https://api.anthropic.com/v1/organizations/api_keys/$API_KEY_ID \ -H "X-Api-Key: $ANTHROPIC_ADMIN_API_KEY"
Discussions

A "Just use API" Guide
Beware of users hocking their own UI products. They like to respond personally to say this thing they found is the best, not revealing it is theirs until you grill them. I use LibreChat. It's okay. Very jittery when generating answers, but it works. Also does caching. Installing on Docker on a mac was not fun, but just a one time hassle. I've used AnythingLLM. It's much easier to install. IDK anything else about it. Apparently bigAGI is good. That name makes me cringe so I've never tried. Oh also you can generate a new API key whenever you want. If you think someone might have maybe possibly stolen yours just make a new one. It is very very easy. EDIT: Do not worry about the best front end. They all work. Use whatever random one you first think is ok. Keep an eye out on your Anthropic console to make sure your API key hasn't been stolen. More on reddit.com
🌐 r/ClaudeAI
116
287
December 16, 2024
Anthropic is giving free API credits for university students
With the amount of money I’m spending on Claude Code, I may just need a student loan. 😆 Does this count, Anthropic? 🙏 More on reddit.com
🌐 r/ClaudeAI
19
96
April 2, 2025
Do I need to pay for both Claude and Anthropic to use the API key?
When making a complaint, please make sure you have chosen the correct flair for the Claude environment that you are using: i.e Web interface (FREE), Web interface (PAID), or Claude API. This information helps others understand your particular situation. try to include as much information as possible (e.g. prompt and output) so that people can understand the source of your complaint. be aware that even with the same environment and inputs, others might have very different outcomes due to Anthropic's testing regime. be sure to thumbs down unsatisfactory Claude output on Claude.ai. Anthropic representatives tell us they monitor this data regularly. I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns. More on reddit.com
🌐 r/ClaudeAI
23
6
October 30, 2024
Anthropic API key
It does exist, but it appears they will only respond if it is clear you are immediately ready to be spending tens of thousands of dollars each month. They don’t seem interested in working with tiny accounts. More on reddit.com
🌐 r/AnthropicAi
13
8
February 26, 2023
🌐
Merge.dev
merge.dev › blog › anthropic-api-key
How to get your Anthropic API key (3 steps)
March 13, 2024 - If you recently created a new account, you may have credits to test the API without setting up a paid plan. To claim the credits, you’ll need to provide your phone number. If you go this route, you can skip the remainder of this guide.
🌐
GitHub
github.com › galaxyapi › claude-3
GitHub - galaxyapi/claude-3: Free Proxy to access Claude-3 API. Anthropic key not required 🔐. It uses OpenAI format api to easily integrate on any Openai supported frontend.
Free Proxy to access Claude-3 API. Anthropic key not required 🔐. It uses OpenAI format api to easily integrate on any Openai supported frontend. - galaxyapi/claude-3
Starred by 112 users
Forked by 8 users
🌐
Apidog
apidog.com › blog › how-to-use-claude-api-key-for-free-in-2025
How to Use Claude API Key for Free in 2025
October 19, 2025 - How can you assist me today?', 'max_tokens': 50 } # Make the POST request to the Claude API endpoint response = requests.post('https://api.anthropic.com/v1/complete', headers=headers, json=data) # Parse and print the API response result = response.json() print(result) ... Change the prompt and adjust parameters such as max_tokens to see how the API responds. Use this phase to understand rate limits and manage your free trial credits wisely. The free trial may have usage limits and the API key might expire after a set number of requests or days.
🌐
Anthropic
anthropic.com › learn › build-with-claude
Anthropic Academy: Claude API Development Guide
Set up your developer account and generate API keys on the Anthropic Console.
🌐
Mac Install Guide
mac.install.guide › ai › claude › account
Anthropic Account and Claude API Key · Mac Install Guide
Realistically, you'll need to purchase $5 worth of credits (the Anthropic minimum) to learn enough about Claude to decide if you want to use it. You'll visit the Anthropic website to create an account and get an API key...
🌐
Anthropic
anthropic.com › news › claude-3-5-sonnet
Introducing Claude 3.5 Sonnet
Claude 3.5 Sonnet is now available for free on Claude.ai and the Claude iOS app, while Claude Pro and Team plan subscribers can access it with significantly higher rate limits. It is also available via the Anthropic API, Amazon Bedrock, and Google Cloud’s Vertex AI.
Find elsewhere
🌐
Reddit
reddit.com › r/claudeai › a "just use api" guide
r/ClaudeAI on Reddit: A "Just use API" Guide
December 16, 2024 -

Created the below guide that hopefully will assist those who are interested in trying it out - especially those who are frustrated with the paid Anthropic monthly subscription:

What is an API?

API stands for Application Programming Interface. It's a software intermediary that allows two applications to communicate with each other. Think of it as a messenger that takes your request to a provider and delivers the response back to you. In simpler terms, an API is a set of rules and specifications that allows different software applications to interact and share data, regardless of their underlying technologies.

How to Obtain an Anthropic API Key

Here's a detailed guide to getting your Anthropic API key:

  1. Create an Anthropic Account:

    • Go to the Anthropic website (console.anthropic.com) and sign up for an account or log in if you already have one.

  2. Access the API Keys Section:

    • Once you're logged into your account, navigate to your name/profile icon at the top right of your screen. Look for an option labeled "API Keys".

  3. Generate a New API Key:

    • Click on the button "+ Create Key".

    • You'll be prompted to give your key a name. Enter a name and click "Create Key."

  4. Copy and Secure Your API Key:

    • A long string will be displayed, which is your API key. Copy this key immediately and store it in a safe location. You will not be able to view it again, and you'll need to generate a new one if you lose it.

  5. Set up Billing:

    • I put daily limits on usage – just in case. I recommend you do the same.

Important notes:

  • Security: Treat your API key like a password. Do not share it publicly or embed it directly in your code (if applicable). Use secure methods to store and access it.

  • You can always disable your key and create new ones if you feel any have been compromised.

API Limits - Quick Definitions:

  • Rate (Requests Per Minute - RPM): How often you can send requests (Low to Higher).

  • Context (Max Input Tokens): How much the AI remembers (Smaller to Larger).

  • Output (Max Output Tokens): How long the AI's response can be (Shorter to Longer).

Anthropic Tiers:

  • Tier 1:

    • Very low rate limits (50 RPM).

    • Small per minute context input limit (40k-50K input tokens on 3.5 models). This is the real killer for single users.

    • Shorter responses/output (per min).

    • This tier will make you tear your wig off - avoid.

  • Tier 2

    • Higher rate limits (1000 RPM).

    • Moderate per minute context input limit (80k-100k input tokens on 3.5 models).

    • Longer responses/output (per min).

    • I recommend spending the $40 to get to this at least. The majority of users will probably use up their $40 within 3-6 months. Just a guess on my part FYI. Power users can gobble this up in no time, however.

  • Tier 3:

    • Higher rate limits (2000 RPM).

    • Large per minute context input limit (160k-200k input tokens on 3.5 models).

    • Longer responses/output (per min).

  • Tier 4:

    • Highest rate limits (4,000 RPM), which means it can handle more concurrent requests.

    • Very large per minute context input limit (up to 400k input tokens on all models).

    • Longer responses/output (per min).

    • Currently this is the only tier that allows for 3.5 Sonnet's max context window of 200k input tokens (check my hyper link above to see for yourself).

    • You'll need $400 currently to reach this tier.

WARNING - YOUR API CREDITS EXPIRE AFTER 12 MONTHS FROM PURCHASE.

Anthropic Current Models & Context:

  • Claude 3 Opus:

    • Has a max context window of 200k input tokens. 4K max output tokens.

    • Available on all tiers.

  • Claude 3.5 Sonnet:

    • Has a max context window of 200k input tokens. 8K max output tokens.

    • Available on all tiers.

  • Claude 3.5 Haiku:

    • Has a max context window of 200k input tokens. 8K max output tokens.

    • Available on all tiers.

Tier 4 Advantages for Multiple Users:

Tier 4's primary benefit is its high rate limits, allowing for a total of 400,000 input tokens per minute. This capacity means you could, for example, concurrently run multiple 200,000 input token context models at their maximum. This level of throughput is particularly important for applications that experience a high volume of requests.

Why Tier 4 Matters for High Traffic:

  • Handles Concurrent Requests: Tier 4 is designed to efficiently manage simultaneous requests from many users.

  • Prevents Overloads: Lower tiers can become overwhelmed with a large number of users submitting queries, causing slowdowns. Tier 4 prevents these bottlenecks, ensuring smooth operation.

  • Supports Sustained High Usage: Tier 4 is ideal for applications requiring consistent support for heavy request loads.

Tier 4 for the Single User:

As a single, "power" user, Tier 4 essentially removes all limitations on your usage.

To clarify - Tier 4 allows up to 400k input tokens of TOTAL context per minute. It does NOT allow for any particular model to extend its context input token window capability.

Platforms for Using Anthropic API Keys

Here are some popular platforms, categorized by their nature:

Free Platforms (just a sample of some I use):

  • Anthropic Console Workbench: The Anthropic website itself provides a Workbench where you can experiment with the API directly in your browser. This is a good place to start exploring.

  • TypingMind (Limited): Decent number of features for free - but ads are annoying. Check it out. Free is browser based only I believe.

  • ChatBox (Community Edition): The commercial product is also free and easy to install locally - however read the privacy policy and be sure you are good with it (I'm serious). They have a browser based one here (again, read privacy policy): Chatbox.

  • Msty (Limited): Good free feature set. Nice UI.

Paid Platforms (just a sample of some I use):

  • TypingMind (Full Featured/Lifetime purchase): Onetime payment (try to catch it on sale sub $100) and also has a local install option if you are tech savvy enough. The unique thing about this is that you can utilize things like "Canvas" across multiple API vendors (Anthropic for example).

  • 16x Prompt: I use this for coding heavily. Check it out.

  • Msty (Lifetime): I have not used this, but I have a friend who loves the additional features that the paid version brings.

Open-Source Platforms (just a sample of some I use):

  • Open WebUI: An open-source platform for building AI agents and workflows that supports various model providers, including Claude. Install with pinokio - far easier to get you set up on it if you are unfamiliar with Docker.

  • LibreChat (Advanced Setup): No pinokio installation method as of yet but another incredibly featured free open-sourced product that just released Agents as well. They also released a code interpreter feature that is not free - however if you have a need for something like this you'd understand why (sandboxed environment).

Plenty of vendor options out there I'm sure - just be sure your keys are stored securely and be sure to actually read the Privacy Policy with all of them (I can't stress this enough).

WARNING: This is NOT a thread for devs to blatantly promote their product. I am not associated with ANY of the above recommendations. I have contributed to the Open WebUI platform by creating some popular functions - but that is about it.

Hope this helps!

Edit: Modified some things. Removed my statement regarding my preference for keys not being stored in browsers - again, generally a non-issue for most. Unique issue just for me.

🌐
Social Intents
help.socialintents.com › social intents knowledge base › ai chatbots › how to find your anthropic claude api key
How to Find Your Anthropic Claude API Key - Social Intents Knowledge Base
September 28, 2025 - In this article, we're going to show you how to easily generate an Anthropic Claude API Key to quickly integrate the Claude AI models into your projects and applications.
🌐
CometAPI
cometapi.com › how-to-get-claude-free-api
How to get Claude Free APIs? 3 Ways! - CometAPI - All AI Models in One API
July 8, 2025 - Anthropic periodically partners with cloud platforms like AWS and Google Cloud to offer promotional credits for Claude API usage. Keeping an eye on platform announcements can unlock $300+ in free credits, which are often applicable to Claude via integrations such as AWS Bedrock or Google Vertex AI . For developers in regions where direct access to Anthropic may be restricted, platforms such as CometAPI offer a unified interface compatible with OpenAI‑style calls. You simply point your OpenAI SDK at CometAPI’s endpoint, set your key, and invoke Claude models (and even Google’s Gemini) without altering your codebase.
🌐
Claude
docs.claude.com › en › api › admin-api › apikeys › get-api-key
Get API Key - Claude Docs
{ "created_at": "2024-10-30T23:58:27.427722Z", "created_by": { "id": "user_01WCz1FkmYMm4gnmykNKUu3Q", "type": "user" }, "id": "apikey_01Rj2N8SVvo6BePZj99NhmiT", "name": "Developer Key", "partial_key_hint": "sk-ant-api03-R2D...igAA", "status": "active", "type": "api_key", "workspace_id": "wrkspc_01JwQvzr7rXLA5AGx3HKfFUJ" } ... curl "https://api.anthropic.com/v1/organizations/api_keys/apikey_01Rj2N8SVvo6BePZj99NhmiT" \ --header "anthropic-version: 2023-06-01" \ --header "content-type: application/json" \ --header "x-api-key: $ANTHROPIC_ADMIN_KEY"
🌐
GitHub
github.com › Good-player › free-claude-api
Good-player/free-claude-api-and-anthropic
We have claude free api key! Please only for testing for individual. Or in super small application. I dont have infinite money. But it official api key tho. - Good-player/free-claude-api-and-anthropic
Author   Good-player
🌐
Anthropic
anthropic.com
Home \ Anthropic
Anthropic is an AI safety and research company that's working to build reliable, interpretable, and steerable AI systems.
🌐
Promptitude
help.promptitude.io › en › articles › 11166436-how-to-get-your-api-key-for-anthropic
How To Get Your API Key For Anthropic | Promptitude.io Help Center
Learn how to quickly obtain and set up your Anthropic API key to start building with Claude AI models in just a few simple steps.
🌐
Apideck
apideck.com › blog › how-to-get-your-claude-anthropic-api-key
How to Get Your Claude (Anthropic) API Key
This step-by-step guide shows you exactly how to create your Anthropic account, generate and secure your API key, set up billing, and test your first request.
🌐
Pickaxe
pickaxe.co › post › how-to-get-your-claude-api-key-a-step-by-step-guide
How to get your Claude API key: A step-by-step guide (2025) - Pickaxe Blog
October 28, 2025 - To get a Claude API key, you must create an Anthropic account add securely generate your key within the Anthropic Console. The key is shown only once so store it safely. Claude’s API is pay-as-you-go, but you can start with free credits.