x402 MCP Proxy
by openCMC
Server Configuration
Describes the environment variables required to run the server.
| Name | Required | Description | Default |
|---|---|---|---|
| X402_CONFIG | No | Custom path to a JSON config file. | |
| EVM_PRIVATE_KEY | No | EVM private key (0x-prefixed hex). Used for USDC payments on Base. | |
| SVM_PRIVATE_KEY | No | Solana private key (base58-encoded). Used for USDC payments on Solana. | |
| X402_MAX_PAYMENT | No | Maximum amount per single request (in asset smallest unit). Default: 100000 (0.10 USDC). | |
| X402_REMOTE_MCPS | No | Flat pair list of prefix/url pairs: e.g., '["cmc","https://pro.coinmarketcap.com/x402/mcp"]' or comma-separated. | |
| X402_ALLOWED_ASSETS | No | Comma-separated allowlist of asset contract addresses. Default: Base USDC, Solana USDC. | |
| X402_ALLOWED_NETWORKS | No | Comma-separated allowlist of CAIP-2 network IDs. Default: eip155:8453,solana:5eykt... | |
| X402_MAX_SPEND_PER_SESSION | No | Maximum cumulative spend per proxy session. Default: 1000000 (1.00 USDC). |
Capabilities
Server capabilities have not been inspected yet.
Tools
Functions exposed to the LLM to take actions
| Name | Description |
|---|---|
No tools | |
Prompts
Interactive templates invoked by user choice
| Name | Description |
|---|---|
No prompts | |
Resources
Contextual data attached and managed by the client
| Name | Description |
|---|---|
No resources | |
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