x402 service-quality oracle: check a service's paid-probe quality tier and score before paying it.
Connect Runs on your machine
claude mcp add assay -e ASSAY_URL=<ASSAY_URL> -e ASSAY_WALLET_KEY=<ASSAY_WALLET_KEY> -- npx -y [email protected]{
"mcpServers": {
"assay": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"ASSAY_URL": "<ASSAY_URL>",
"ASSAY_WALLET_KEY": "<ASSAY_WALLET_KEY>"
}
}
}
}{
"mcpServers": {
"assay": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"ASSAY_URL": "<ASSAY_URL>",
"ASSAY_WALLET_KEY": "<ASSAY_WALLET_KEY>"
}
}
}
}{
"servers": {
"assay": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"ASSAY_URL": "<ASSAY_URL>",
"ASSAY_WALLET_KEY": "<ASSAY_WALLET_KEY>"
}
}
}
}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 |
|---|---|
ASSAY_URLOptional | Assay instance to query (default: https://assay.nominal-labs.com) |
ASSAY_WALLET_KEYOptional, secret | Optional Base wallet private key; when set, get_score auto-purchases full reports ($0.005, hard-capped 0.01 USDC/call) |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 5 Aug 2026 |
| Last updated | 5 Aug 2026 |
| Registry name | io.github.JasonCZMeng/assay |
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