Frequently Asked Questions

Frequently Asked Questions

Is the plugin free?

Yes. The plugin itself is free and MIT licensed. You can install and use it at no cost. API calls to ChainGPT's live services consume credits -- see the Pricing Guide for details. The mock server allows unlimited free testing.

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Do I need an API key?

For live APIs: Yes. Get your API key at app.chaingpt.org.

For mock server testing: No. The mock server requires no authentication.

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Which Claude Code version do I need?

The latest version of Claude Code is recommended. The plugin uses standard Claude Code plugin conventions and MCP protocol, so any recent version should work.

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Can I use it without the MCP server?

Yes. The skills work standalone for code generation. Claude Code will read the SKILL.md and reference docs to generate integration code, templates, and configurations without needing the MCP server running. The MCP server adds the ability to make live API calls directly from Claude Code.

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How do I test without spending credits?

Use the mock server:

cd mock-server
npm install
npm run dev

Then set CHAINGPT_BASE_URL=http://localhost:3001. All API calls will route to the local mock server at zero cost. See the Testing Guide for full details.

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What blockchains are supported for NFT minting?

22+ chains are supported, including:

• Ethereum

• Polygon

• BNB Smart Chain (BSC)

• Arbitrum

• Optimism

• Avalanche

• Base

• zkSync

• Linea

• Scroll

• And more

Check the reference docs for the current full list.

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Is the Solidity LLM the same as the API?

No. The Solidity LLM is a separate open-source model hosted on HuggingFace. It runs locally and is free to use (0 credits). The LLM Chat API is a hosted service at api.chaingpt.org that costs 0.5-1.0 credits per request. They serve different purposes: the Solidity LLM is specialized for Solidity code generation, while the API provides general Web3/blockchain AI chat.

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Can I use multiple products together?

Yes. The plugin includes composition patterns and multi-product templates for combining products. Common combinations include:

• LLM Chat + Contract Generator (design then build)

• Contract Generator + Contract Auditor (build then verify)

• LLM Chat + NFT Generator (describe then create)

• News + AgenticOS (monitor then post)

See the patterns/ directory in the plugin for ready-to-use examples.

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How do I report bugs?

Open an issue on the plugin's GitHub repository. Include:

• Steps to reproduce the issue

• Expected vs. actual behavior

• Claude Code version

• Whether the issue occurs with the mock server or live API

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Is there a grant program?

Yes. The $1M Web3 AI Grant Program offers:

• Up to $20,000 in API credits

• Up to $10,000 USDC

The grant supports developers building innovative Web3 AI applications with ChainGPT.

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What's the rate limit?

200 requests per minute per API key. Requests exceeding this limit receive a 429 Too Many Requests response. If you need higher limits, contact ChainGPT support.

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Do credits expire?

No. Credits never expire. Purchase once and use them whenever you need.