Receipt-based verification for AI agent workflows โ create, verify, and poll ephemeral proof objects
Connect Runs on your machine
claude mcp add mcp-server -e PROOFSLIP_API_KEY=<PROOFSLIP_API_KEY> -e PROOFSLIP_BASE_URL=<PROOFSLIP_BASE_URL> -- npx -y @proofslip/[email protected]
{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@proofslip/[email protected]"
],
"env": {
"PROOFSLIP_API_KEY": "<PROOFSLIP_API_KEY>",
"PROOFSLIP_BASE_URL": "<PROOFSLIP_BASE_URL>"
}
}
}
}
{
"mcpServers": {
"mcp-server": {
"command": "npx",
"args": [
"-y",
"@proofslip/[email protected]"
],
"env": {
"PROOFSLIP_API_KEY": "<PROOFSLIP_API_KEY>",
"PROOFSLIP_BASE_URL": "<PROOFSLIP_BASE_URL>"
}
}
}
}
{
"servers": {
"mcp-server": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@proofslip/[email protected]"
],
"env": {
"PROOFSLIP_API_KEY": "<PROOFSLIP_API_KEY>",
"PROOFSLIP_BASE_URL": "<PROOFSLIP_BASE_URL>"
}
}
}
}
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 |
|---|---|
PROOFSLIP_API_KEYRequired, secret | Your ProofSlip API key (get one free at proofslip.ai) |
PROOFSLIP_BASE_URLOptional | API base URL (defaults to https://proofslip.ai) |
Details
| Package | @proofslip/[email protected] (NPM, stdio) |
| First published | 5 Apr 2026 |
| Last updated | 5 Apr 2026 |
| Registry name | ai.proofslip/mcp-server |
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