ProofSlip MCP Server
by johnny-z13ai.proofslip/mcp-serverv0.2.3
Receipt-based verification for AI agent workflows — create, verify, and poll ephemeral proof objects
context tax
queued
security
queued
cold start
queued
freshness
Maintained3mo ago
Install ProofSlip MCP server
Install in Claude Code
claude mcp add johnny-z13 -e PROOFSLIP_API_KEY='<proofslip-api-key>' -- npx -y @proofslip/mcp-serverInstall in Cursor
{
"mcpServers": {
"johnny-z13": {
"command": "npx",
"args": [
"-y",
"@proofslip/mcp-server"
],
"env": {
"PROOFSLIP_API_KEY": "<proofslip-api-key>"
}
}
}
}Add to ~/.cursor/mcp.json (global) or .cursor/mcp.json (project).
Install in Claude Desktop
{
"mcpServers": {
"johnny-z13": {
"command": "npx",
"args": [
"-y",
"@proofslip/mcp-server"
],
"env": {
"PROOFSLIP_API_KEY": "<proofslip-api-key>"
}
}
}
}Settings → Developer → Edit Config (claude_desktop_config.json), then restart.
Install in VS Code
{
"servers": {
"johnny-z13": {
"type": "stdio",
"command": "npx",
"args": [
"-y",
"@proofslip/mcp-server"
],
"env": {
"PROOFSLIP_API_KEY": "<proofslip-api-key>"
}
}
}
}Add to .vscode/mcp.json in your workspace.
Install in Windsurf
{
"mcpServers": {
"johnny-z13": {
"command": "npx",
"args": [
"-y",
"@proofslip/mcp-server"
],
"env": {
"PROOFSLIP_API_KEY": "<proofslip-api-key>"
}
}
}
}Add to ~/.codeium/windsurf/mcp_config.json.
Configuration
| Variable | Required | Secret | Description |
|---|---|---|---|
| PROOFSLIP_API_KEY | yes | yes | Your ProofSlip API key (get one free at proofslip.ai) |
| PROOFSLIP_BASE_URL | — | — | API base URL (defaults to https://proofslip.ai) |
Freshness
Maintained — last maintenance signal 3mo ago. The newest of the signals below sets the band.
Last commit (default branch)
2026-07-19 · 3mo ago · GitHub
Latest release
no data · GitHub
Package published
no data · npm/PyPI
Registry entry updated
2026-04-05 · 6mo ago · official registry · v0.2.3
FAQ
›How do I install the ProofSlip MCP server in Claude Code?
Run: claude mcp add johnny-z13 -e PROOFSLIP_API_KEY='<proofslip-api-key>' -- npx -y @proofslip/mcp-server. For Cursor, VS Code, Claude Desktop and Windsurf, use the install tabs above.
›Does ProofSlip require an API key?
Yes. It expects PROOFSLIP_API_KEY, of which 1 is a secret.
›Can I use ProofSlip as a remote (hosted) MCP server?
No hosted endpoint is published; it runs locally over stdio.
›Is ProofSlip in the official MCP registry?
Yes, as ai.proofslip/mcp-server.