Neutral third-party witness: independently fetch, hash, timestamp, archive any URL or API response.
Connect Runs on your machine
claude mcp add witnessd -e WITNESSD_URL=<WITNESSD_URL> -e EVM_PRIVATE_KEY=<EVM_PRIVATE_KEY> -e WITNESSD_API_KEY=<WITNESSD_API_KEY> -- npx -y [email protected]{
"mcpServers": {
"witnessd": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"WITNESSD_URL": "<WITNESSD_URL>",
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"WITNESSD_API_KEY": "<WITNESSD_API_KEY>"
}
}
}
}{
"mcpServers": {
"witnessd": {
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"WITNESSD_URL": "<WITNESSD_URL>",
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"WITNESSD_API_KEY": "<WITNESSD_API_KEY>"
}
}
}
}{
"servers": {
"witnessd": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"[email protected]"
],
"env": {
"WITNESSD_URL": "<WITNESSD_URL>",
"EVM_PRIVATE_KEY": "<EVM_PRIVATE_KEY>",
"WITNESSD_API_KEY": "<WITNESSD_API_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 |
|---|---|
WITNESSD_URLOptional | Base URL of the witnessd service (default https://witnessd.vip) |
EVM_PRIVATE_KEYOptional, secret | Wallet key used to auto-pay x402 invoices in USDC on Base (either this or WITNESSD_API_KEY) |
WITNESSD_API_KEYOptional, secret | Prepaid witnessd credit key (alternative to EVM_PRIVATE_KEY) |
Details
| Package | [email protected] (NPM, stdio) |
| First published | 15 Aug 2026 |
| Last updated | 15 Aug 2026 |
| Registry name | vip.witnessd/witnessd |
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