Pay-per-request GPT chat, embeddings, agents and prepaid keys with local x402 USDC signing
Connect Runs on your machine
claude mcp add mapleai-mcp -e EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY> -e SVM_PRIVATE_KEY=<SVM_PRIVATE_KEY> -e MCP_PAY_TO_BASE=<MCP_PAY_TO_BASE> -e MCP_PAY_TO_POLYGON=<MCP_PAY_TO_POLYGON> -e MCP_PAY_TO_ARC=<MCP_PAY_TO_ARC> -e MCP_PAY_TO_SOLANA=<MCP_PAY_TO_SOLANA> -e MCP_MAX_PAYMENT_USDC=<MCP_MAX_PAYMENT_USDC> -e MCP_MAX_PREPAID_USDC=<MCP_MAX_PREPAID_USDC> -e MCP_NETWORK=<MCP_NETWORK> -- npx -y [email protected]{
"mcpServers": {
"mapleai-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"SVM_PRIVATE_KEY": "<SVM_PRIVATE_KEY>",
"MCP_PAY_TO_BASE": "<MCP_PAY_TO_BASE>",
"MCP_PAY_TO_POLYGON": "<MCP_PAY_TO_POLYGON>",
"MCP_PAY_TO_ARC": "<MCP_PAY_TO_ARC>",
"MCP_PAY_TO_SOLANA": "<MCP_PAY_TO_SOLANA>",
"MCP_MAX_PAYMENT_USDC": "<MCP_MAX_PAYMENT_USDC>",
"MCP_MAX_PREPAID_USDC": "<MCP_MAX_PREPAID_USDC>",
"MCP_NETWORK": "<MCP_NETWORK>"
}
}
}
}{
"mcpServers": {
"mapleai-mcp": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"SVM_PRIVATE_KEY": "<SVM_PRIVATE_KEY>",
"MCP_PAY_TO_BASE": "<MCP_PAY_TO_BASE>",
"MCP_PAY_TO_POLYGON": "<MCP_PAY_TO_POLYGON>",
"MCP_PAY_TO_ARC": "<MCP_PAY_TO_ARC>",
"MCP_PAY_TO_SOLANA": "<MCP_PAY_TO_SOLANA>",
"MCP_MAX_PAYMENT_USDC": "<MCP_MAX_PAYMENT_USDC>",
"MCP_MAX_PREPAID_USDC": "<MCP_MAX_PREPAID_USDC>",
"MCP_NETWORK": "<MCP_NETWORK>"
}
}
}
}{
"servers": {
"mapleai-mcp": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"SVM_PRIVATE_KEY": "<SVM_PRIVATE_KEY>",
"MCP_PAY_TO_BASE": "<MCP_PAY_TO_BASE>",
"MCP_PAY_TO_POLYGON": "<MCP_PAY_TO_POLYGON>",
"MCP_PAY_TO_ARC": "<MCP_PAY_TO_ARC>",
"MCP_PAY_TO_SOLANA": "<MCP_PAY_TO_SOLANA>",
"MCP_MAX_PAYMENT_USDC": "<MCP_MAX_PAYMENT_USDC>",
"MCP_MAX_PREPAID_USDC": "<MCP_MAX_PREPAID_USDC>",
"MCP_NETWORK": "<MCP_NETWORK>"
}
}
}
}Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.
Tools
This server runs locally, so its tools are listed by your MCP client once it starts.
Environment variables
| Name | Description |
|---|---|
EVM_PRIVATE_KEYOptional, secret | 0x-prefixed wallet key for paid calls on Base, Polygon and Arc (x402 signing happens locally; the key never leaves this process) |
SVM_PRIVATE_KEYOptional, secret | Solana wallet key (base58 or JSON byte array) for paid calls on Solana |
MCP_PAY_TO_BASEOptional | Verified API recipient on Base: 0x63db6eaf635a31bbc6714fe37bdc85243864f611 (check https://base.mapleai.shop/.well-known/x402) |
MCP_PAY_TO_POLYGONOptional | Verified API recipient on Polygon: 0x63db6eaf635a31bbc6714fe37bdc85243864f611 (check https://polygon.mapleai.shop/.well-known/x402) |
MCP_PAY_TO_ARCOptional | Verified API recipient on Arc: 0x63db6eaf635a31bbc6714fe37bdc85243864f611 (check https://arc.mapleai.shop/.well-known/x402) |
MCP_PAY_TO_SOLANAOptional | Verified API recipient on Solana: 9DbpH2Mf9D26ak4bASsv6KA4Ra4V571oLpiVdZjAjcU8 (check https://sol.mapleai.shop/.well-known/x402) |
MCP_MAX_PAYMENT_USDCOptional | Per-call spending cap for metered tools (chat, Jev, agent execution). Default 0.10 |
MCP_MAX_PREPAID_USDCOptional | Per-purchase cap for prepaid key packs (covers the largest 1M-token pack). Default 3.00 |
MCP_NETWORKOptional | Default network for tools: base, polygon, arc or solana. Default polygon |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 5 Oct 2026 |
| Last updated | 5 Oct 2026 |
| Registry name | io.github.veenrek/mapleai-mcp |
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