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Newton’s
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CHOOSE YOUR CONNECTION

Where do you want to keep working?

Choose your tool or app. Check support, create your free account, then follow your setup steps to a first response.

Instant Overflow RoutingHit your AI subscription limit?

Get an instant drop-in OpenAI/Claude compatible key in 30 seconds. Includes $1 instant testing credit so you can verify your prompts with zero upfront payment.

Claim Free API Key ($1 Credit) →
Looking for the Continue.dev (VS Code & JetBrains) custom OpenAI configuration?Open Continue.dev Setup Hub →

Start free. Account creation requires no payment. Tool support varies by model and version; check the status shown above.

Already have an account? Sign in to your workspace →

SEAMLESS INTEGRATION SUITE

Plug into any editor or agent in 15 seconds.

Newton’s exposes a standard OpenAI-compatible gateway (`https://newtons.dev/api/v1`). One key connects your IDE, CLI, or custom pipeline with zero proprietary wrappers.

Cursor

Native IDE AI Assistant

Point Cursor's custom OpenAI endpoint directly to Newton's for high-speed, cost-controlled completions.

Connection Parameters

Base URL:https://newtons.dev/api/v1
API Key:sk-ant-api03-... (Your Newton’s Key)
Recommended Model:claude-sonnet-5-5

Setup Instructions

  1. Open Cursor Settings (Cmd + , on Mac or Ctrl + , on Windows).
  2. Navigate to Models, enable 'Override OpenAI Base URL', and paste https://newtons.dev/api/v1.
  3. Add your Newton’s API key into the OpenAI API Key input.
  4. Add 'claude-sonnet-5-5' or 'claude-sonnet-5' to your model list and start coding.
Settings > Models > OpenAI API Key & Override
// In Cursor Settings -> Models -> OpenAI API:
Base URL: https://newtons.dev/api/v1
API Key: <YOUR_NEWTONS_API_KEY>
Model: claude-sonnet-5-5

CODEX SETUP

Connect Codex

Keep your project open. Check the exact tool version, model, and required features before changing your setup.

Use direct API access or choose another currently available model; do not add credits for an unverified tool path.

  1. Check the model first

    Browse exact model IDs, availability, and published rates. An available API model does not by itself prove compatibility with Codex. Use direct API access or choose another currently available model; do not add credits for an unverified tool path.

    Browse available models →

  2. Get your Newton’s API key

    Instant setup in 30 seconds with $1 free testing credit. No payment info required to test your first requests.

    Claim API key & $1 credit →

  3. Check the tool setup

    The console checks the current catalog and feature evidence for your exact model and Codex version. It won’t generate tool configuration when a required check is missing.

    Check compatibility and setup →

  4. Add credits when ready

    Only add prepaid credits after confirming the route you intend to use is available. Send one small request, then confirm its response and actual charge in Activity. If no coding-tool setup is available, use the direct API quickstart before funding this path.

    Review credits →
What happens to my current work?

Your project files stay in their folder. Conversation history may not transfer. Save your work and a short handoff so you can resume in a new session if needed.

See the handoff checklist →
Already changed your settings? Switch back

Close the Newton’s session and restore your original provider configuration and normal launch method. Check the active provider before sending a new prompt.

Switching back does not reset your subscription limit. Requests already sent through Newton’s may still finish and incur charges; check Activity.

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CLAUDE CODE SETUP

Connect Claude Code

Keep your project open. Check the exact tool version, model, and required features before changing your setup.

Use direct API access or choose another currently available model; do not add credits for an unverified tool path.

  1. Check the model first

    Browse exact model IDs, availability, and published rates. An available API model does not by itself prove compatibility with Claude Code. Use direct API access or choose another currently available model; do not add credits for an unverified tool path.

    Browse available models →

  2. Get your Newton’s API key

    Instant setup in 30 seconds with $1 free testing credit. No payment info required to test your first requests.

    Claim API key & $1 credit →

  3. Check the tool setup

    The console checks the current catalog and feature evidence for your exact model and Claude Code version. It won’t generate tool configuration when a required check is missing.

    Check compatibility and setup →

  4. Add credits when ready

    Only add prepaid credits after confirming the route you intend to use is available. Send one small request, then confirm its response and actual charge in Activity. If no coding-tool setup is available, use the direct API quickstart before funding this path.

    Review credits →
What happens to my current work?

Your project files stay in their folder. Conversation history may not transfer. Save your work and a short handoff so you can resume in a new session if needed.

See the handoff checklist →
Already changed your settings? Switch back

Close the Newton’s session. Remove only the endpoint and authentication overrides you added for Newton’s, restoring any previous values. Reopen Claude Code and check the active account before prompting.

Switching back does not reset your subscription limit. Requests already sent through Newton’s may still finish and incur charges; check Activity.

Back to compatibility ↑

DIRECT API ACCESS

From one model to your first response.

This path is for making requests from your own code. Check the chosen model’s supported features; API access alone does not establish coding-tool compatibility.

  1. Choose an available model

    Review its exact ID, supported features, and current rates. If no model is available for your request, stop here before paying.

    Choose a model and review its price →

  2. Create your account and save your key

    Instant API key generation with $1 free starter credit included. Test your custom requests with no card required.

    Create API key & start testing →

  3. Add credits when you are ready

    Review available top-up amounts in the console and confirm payment in checkout. Usage is prepaid and separate from any existing subscription. New requests stop when the remaining balance cannot cover them.

    Review credits in your console →

  4. Make one small request, then check Activity

    Use your selected model and the quickstart in your console. Confirm the response, request status, and actual charge before sending more. If a request times out, check Activity before retrying.

    Open your setup steps →

Keep your place.

If your subscription limit prevents another message, write this handoff yourself. No extra model call is needed.

Your handoff checklist

  • What you are trying to finish.
  • Files changed and decisions already made.
  • Checks run, results, and any remaining error.
  • The next action to take.

Review it before sharing with another provider. Leave out passwords, API keys, and unrelated private information.

Return to your usual setup.

Restore the settings you saved for your tool and confirm the active provider before your next prompt. You may need a new session; your subscription may still be at its limit.

Codex return stepsClaude Code return steps