# Decentramind > AI credits on Solana. Stakers of $DMIND earn credits and sell them on an on-chain order book; buyers activate them into an OpenAI-compatible API balance for every model on OpenRouter and Bittensor subnet 64. The API key is a wallet signature. ## Docs - [Agent guide](https://decentramind.app/agents.md): key, on-chain purchase, API calls and MCP in one page - [API reference](https://decentramind.app/docs): endpoints, billing and errors - [Protocol](https://decentramind.app/protocol): how credits are funded, priced and spent, with live parameters ## API - [Models](https://decentramind.app/api/v1/models): the catalog with per-token prices - [MCP server](https://decentramind.app/api/mcp): Streamable HTTP, same key as the API