MCP server for ListSmith — x402 listing grades ($0.10) and repairs ($0.50) on Base
Connect Runs on your machine
claude mcp add list-smith-mcp -e AGENT_PRIVATE_KEY=<AGENT_PRIVATE_KEY> -e AGENT_KEY_FILE=<AGENT_KEY_FILE> -e LIST_SMITH_URL=<LIST_SMITH_URL> -e LIST_SMITH_GRADE_MAX_AMOUNT_UNITS=<LIST_SMITH_GRADE_MAX_AMOUNT_UNITS> -e LIST_SMITH_FIX_MAX_AMOUNT_UNITS=<LIST_SMITH_FIX_MAX_AMOUNT_UNITS> -- uvx list-smith-mcp==0.1.2{
"mcpServers": {
"list-smith-mcp": {
"command": "uvx",
"args": [
"list-smith-mcp==0.1.2"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>",
"AGENT_KEY_FILE": "<AGENT_KEY_FILE>",
"LIST_SMITH_URL": "<LIST_SMITH_URL>",
"LIST_SMITH_GRADE_MAX_AMOUNT_UNITS": "<LIST_SMITH_GRADE_MAX_AMOUNT_UNITS>",
"LIST_SMITH_FIX_MAX_AMOUNT_UNITS": "<LIST_SMITH_FIX_MAX_AMOUNT_UNITS>"
}
}
}
}{
"mcpServers": {
"list-smith-mcp": {
"command": "uvx",
"args": [
"list-smith-mcp==0.1.2"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>",
"AGENT_KEY_FILE": "<AGENT_KEY_FILE>",
"LIST_SMITH_URL": "<LIST_SMITH_URL>",
"LIST_SMITH_GRADE_MAX_AMOUNT_UNITS": "<LIST_SMITH_GRADE_MAX_AMOUNT_UNITS>",
"LIST_SMITH_FIX_MAX_AMOUNT_UNITS": "<LIST_SMITH_FIX_MAX_AMOUNT_UNITS>"
}
}
}
}{
"servers": {
"list-smith-mcp": {
"type": "stdio",
"command": "uvx",
"args": [
"list-smith-mcp==0.1.2"
],
"env": {
"AGENT_PRIVATE_KEY": "<AGENT_PRIVATE_KEY>",
"AGENT_KEY_FILE": "<AGENT_KEY_FILE>",
"LIST_SMITH_URL": "<LIST_SMITH_URL>",
"LIST_SMITH_GRADE_MAX_AMOUNT_UNITS": "<LIST_SMITH_GRADE_MAX_AMOUNT_UNITS>",
"LIST_SMITH_FIX_MAX_AMOUNT_UNITS": "<LIST_SMITH_FIX_MAX_AMOUNT_UNITS>"
}
}
}
}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 |
|---|---|
AGENT_PRIVATE_KEYOptional, secret | EVM private key (0x...) of a wallet holding USDC on Base. Used locally to sign the x402 EIP-3009 authorization. For paid calls. |
AGENT_KEY_FILEOptional | Path to a file containing that key (alternative to AGENT_PRIVATE_KEY). |
LIST_SMITH_URLOptional | Service base URL override (default: production). |
LIST_SMITH_GRADE_MAX_AMOUNT_UNITSOptional | Spend guard per grade call in USDC micro-units (default 100000 = $0.10, the known price). The client refuses to sign anything priced above it. |
LIST_SMITH_FIX_MAX_AMOUNT_UNITSOptional | Spend guard per fix call in USDC micro-units (default 500000 = $0.50, the known price). The client refuses to sign anything priced above it. |
Details
| Package | [email protected] (PYPI, stdio) |
| First published | 25 Oct 2026 |
| Last updated | 25 Oct 2026 |
| Registry name | io.github.QuincyGB/list-smith-mcp |
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